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Rewterz Threat Alert – Threat Actors targeting organizations associated with COVID-19 Vaccine
December 7, 2020
Rewterz Threat Advisory – Russian Hackers Exploiting Recently Patched VMware Flaw
December 8, 2020

Rewterz Threat Alert – AgentTesla Information Stealer – IoCs

December 7, 2020

Severity

High

Analysis Summary

A new AgentTesla campaign is seen targeting victims with malspam. AgentTesla is known for stealing data from different applications on victim machines, such as browsers, FTP clients, and file downloaders. Agent Tesla collects personal information from the victim’s machine, steals data from the victim’s clipboard, can log keystrokes, capture screenshots and access the victim’s webcam. It can kill running analysis processes and AVsoftware. The spyware also performs basic actions to check whether it is running on a virtual machine or in debug mode, in an attempt to hide its capabilities and actions from researchers. All the data it obtains is sent in encrypted form via SMTP protocol. 

This current Agent Tesla campaign seems to be using email attachments with the common phishing themes of invoice, quotation request, new order, shipping advice, etc. These malicious attachments when downloaded and executed will infect the target system with Agent Tesla. 

Impact

  • Credential Theft
  • Data Exfiltration
  • Information Disclosure
  • Detection Evasion

Indicators of Compromise

Filename

  • DHL INVOICE[.]gz[.]exe
  • DHL INVOICE[.]gz
  • New order 46728[.]xlsx
  • quotation request sheet for new business query scan document 000889—-000383644377[.]rar
  • SHIPPING ADVICE OF WK20201102801 ~ WK20201102809 # 2617 – JML[.]exe
  • New order[.] December[.]exe
  • New order[.] December[.]zip
  • Scan 979[.]exe

MD5

  • db08dad1b24a01a1c98dae412cab131a
  • dacd3b0fe3b08535f1b00dd0f6c6619e
  • 53fd2952d08b9c6c4eb3b4b700de854a
  • c68b570e8997b0fb984675d25f82d36c
  • 31a323274d22a5dc09d93f9b1a54a2ba
  • c94c9e870cccfbe22ea15544c18e2401
  • 15244163f18d97881cf794ce294b64f5
  • 5d0e93bf9487b14ea63877ffe2b4cc57
  • 4a55d90ed057090c59c875aa44f810c4
  • 0d2427258e21b27825cc0cb6dd9c633a
  • ee62fc99fa2d9df57edf83938c0c293a
  • d4758bec84fd18f575cad50dd5411779
  • 8ae1ca4d3617938bcec96057c45185fe
  • 828544dc2f388a68a2709e623c1745ee
  • 52961c6f175b75453f3627753475c511
  • 6c5b62cd894dc859b220379d2da14249
  • 7876e90e757b2c30afa1326fec27b1e7
  • 42289a23f33d793b5213979021fe021f
  • 45a5d5b7219c37bbc2547546d3cf8fd4
  • 7a807fb6e216caca90f65744fbb2b509
  • f6f74135015a1b33635bd6cc605c3c98
  • 20561b0902ff85bbc65d6cfd0996215c
  • c629135f82b07d563afbf8d7d2399a4f

SHA-256

  • b39de16dd4f9cca5342dcd36875ceb246874f486698e34fea88e095d8596b368
  • c21ef9a213c71c43dd79f86707deffd34ce403f3e6bf5d9786cd97f86a2da32c
  • 22f447f5336db462a0342b3a78f21706c643dab9d7517b8d96c148833926262b
  • d455e26e8b2cecda7ae1f03d70acfb7c72341610571638300cc561623f6a4fa6
  • 1e63e95fbffd47595bf5a51147690a3f07b53e3fb7d1ebb78fe77b7054b211af
  • 91c714124fa647bc291e83e46e4882a73e7bf31034cd72d413abde1e1267b796
  • 294d3baa6d4e6b9d6e55fd9c67072d0d27f3786a4abb6b27c32fa977778fd94e
  • 0048ee1b26789738562588fa061c52edf97198887f583c536aeec5505adb356d
  • 559afda490876db35346de0e9b48dc3c27dfed237079233d99fb456c6d628d2f
  • 7ea4b49b8a2a85cc8a498d18111959644d247c61a1ff49e46fcb71e2f65987ca
  • 2f37815267df31fe2fb1cbfd752e38937c14fc8003ab53d0456b465e70735fa0
  • 8cd31ed325e997a76dff05ff7b72dc7d360bcd906e71e5096b8e90051a16d809
  • 14e825ebed2c7886f5e5841724b4ae7f5c0b7bd2c46ea94dffee74381e1fc73f
  • 733791b9f0a883fccd3d16935d700144bdfb9e5b8ca2ee4a095fa30ce9c301e5
  • dccf3751a429e82ac64003742b6613c0d298e8d25dfca3d5d2ce2ae22ff6d7f9
  • 6e1a37cc8b4d9d0588132c3f315a4e1f7873ddae440c7be61381b12edf74e723
  • 832c0dd17cdf0e06d2084cdb17df2281718e49f043972edfb2186678741fab8d
  • 824d9e9082e27b16c7bff8e0c02321c69abde54bcbc160a17f68ad4eba21170f
  • 30b2c25ee43913d10eb0cdf42d149e844d88b978e3d41b2808e4564860342860
  • 723cff4baa39f7292958eb4291239eabb4e097e85de8a862b87f2d151d1ffede
  • 75fc8e8a2efbc0d1eb546a8ced701acf6d81e8a579568edbd22c08b43207392e
  • 4c122805ffa252199f267845085ea5304553a541c8814a4b907e8dfefc25eae1
  • 74c76ce0424cda179cdd5946c06ef82d3da22dc9616bd4eb8df9c43b8d359c1f

SHA1

  • dced03cd0efdcad81f172647f7f7c601de04d40a
  • 3bc9d705d8c799c3b9712a3ac3b581d28f4150ff
  • 50be9f4ecf3117900af862dfca3701fdcb575657
  • 74d9c1628e74101a2ebec3a1299846197c74eb6c
  • dce3f045ae0bb716b64886f90d5a8234faddca2d
  • a6527ef4bee59b78e512040954ff7f6ce09a41cd
  • 50787a5f2243331d23d2655ddb5d63e60a97bdb0
  • 6a00117caf69d90b25e5f4bf827b26f7163c1ef9
  • 9c6f5d5da5becb077c9539f2e8fb1fb0b122cdcb
  • 3d051c88642549112c16b99e689a7773498a7b7a
  • 0c467db7f48f1fc19d8703c68462b80d510489eb
  • 0473f678fe37d0488938afde2ae682cc3668e443
  • 0470bd2115b161ca3cbd89fa2ab4f99a30bc5f9f
  • 619d240228e6fdc95504b96a6376fefee630794e
  • 4cc79bdba359916654fa1814bb80e79e856ab21a
  • 29a56a37cc15c36b43869829fe127a227f44b717
  • bae3dc9196cb3a3faa3f79848ebd7c16f3282bca
  • 387ba991a7fbc49d8b5371bb410abac55dd82b2d
  • 986d606cd8edbabcfd36fef9bbf538364eb14732
  • 4fa2eda9b67f0a240c4926ba0d2bf1b4a348a6da
  • b905ebb13036ebe55a7ea99d8912c43299853f69
  • 4e6666673edca5a92f160782430d733ca001cd42
  • 8dad1c341776f7409c521a9ea28a09c5da50117f

Remediation

  • Block the threat indicators at their respective controls.
  • Do not download email attachments coming from untrusted sources.
  • Do not download untrusted files from random sources on the internet.
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