Analysis

  • max time kernel
    117s
  • max time network
    117s
  • platform
    windows7_x64
  • resource
    win7-en-20211014
  • submitted
    20-10-2021 01:55

General

  • Target

    Purchase Order PO63829.exe

  • Size

    356KB

  • MD5

    b8d994b327b1f42d63e6d9e7294853a0

  • SHA1

    5e6f6dfddffa48bdfd9890f68b456482b40d3b8f

  • SHA256

    750c482a5ed1cc058c1bdfc18bc84d963f03cf75103ff66ea3452128a67bcd0e

  • SHA512

    a6441be339ac71ac91f1416aa7ebf408ddc6b490acb4a82532a16a036d299fd49ccc7aa9b631a61091f28b844ea9bfecf4c2698991d04e01b208a99fc54885f3

Malware Config

Signatures

  • AgentTesla

    Agent Tesla is a remote access tool (RAT) written in visual basic.

  • AgentTesla Payload 3 IoCs
  • Loads dropped DLL 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Purchase Order PO63829.exe
    "C:\Users\Admin\AppData\Local\Temp\Purchase Order PO63829.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1360
    • C:\Users\Admin\AppData\Local\Temp\Purchase Order PO63829.exe
      "C:\Users\Admin\AppData\Local\Temp\Purchase Order PO63829.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1588
      • C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe
        dw20.exe -x -s 508
        3⤵
        • Suspicious behavior: GetForegroundWindowSpam
        PID:592

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • \Users\Admin\AppData\Local\Temp\nsyACB.tmp\cjkxps.dll
    MD5

    7b019f3a9e8d090da6cba443fd94e6cd

    SHA1

    ba78720dbd3a43d22a298f9162fd4b7dfd1749f8

    SHA256

    ccae014473dfa19d867b763bde0529f56b292bf3e225f48c15b2eed6d81983d7

    SHA512

    21f1a7f7a2fc29726f065b7f6cb913126d1164df75974373d74d131e65499a962ba14e0c7d56d2d733bef4f376c51810987cd3353e800fb8d73a8a23510fa884

  • memory/592-66-0x0000000000000000-mapping.dmp
  • memory/592-68-0x00000000023C0000-0x00000000023C1000-memory.dmp
    Filesize

    4KB

  • memory/1360-55-0x00000000764D1000-0x00000000764D3000-memory.dmp
    Filesize

    8KB

  • memory/1588-57-0x0000000000400000-0x000000000044B000-memory.dmp
    Filesize

    300KB

  • memory/1588-58-0x000000000040188B-mapping.dmp
  • memory/1588-60-0x0000000000400000-0x000000000044B000-memory.dmp
    Filesize

    300KB

  • memory/1588-62-0x0000000001F21000-0x0000000001F22000-memory.dmp
    Filesize

    4KB

  • memory/1588-63-0x0000000001F22000-0x0000000001F24000-memory.dmp
    Filesize

    8KB

  • memory/1588-61-0x0000000001F20000-0x0000000001F21000-memory.dmp
    Filesize

    4KB

  • memory/1588-64-0x0000000001F27000-0x0000000001F28000-memory.dmp
    Filesize

    4KB

  • memory/1588-65-0x0000000001F28000-0x0000000001F29000-memory.dmp
    Filesize

    4KB