Analysis

  • max time kernel
    135s
  • max time network
    102s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    20-05-2022 22:44

General

  • Target

    Spare parts demand order.exe

  • Size

    725KB

  • MD5

    2fbc5c23cc080717a4bbce55ff6f3f26

  • SHA1

    18c214848e1bdde00cb5233eae45f9ff9f469698

  • SHA256

    76c6dd89d385638ed14036393f9e31c6a92417952f95655e66beacf003c88891

  • SHA512

    de29b3d7fcb0a4d43d0c60723391d17ee68283f6f4137dd0d774d6855f3ea2fbcab70fb727630f93287f2e150d19a2d1a92e1f62469bd64cc72823df11e16951

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.prcpl.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    jyotika@2015

Signatures

  • AgentTesla

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

  • AgentTesla Payload 1 IoCs
  • Drops file in Drivers directory 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Adds Run key to start application 2 TTPs 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.

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Modifies registry key 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Spare parts demand order.exe
    "C:\Users\Admin\AppData\Local\Temp\Spare parts demand order.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4344
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\YggCmNxSl" /XML "C:\Users\Admin\AppData\Local\Temp\tmp444C.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:808
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
      "{path}"
      2⤵
      • Drops file in Drivers directory
      • Accesses Microsoft Outlook profiles
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      • outlook_office_path
      • outlook_win_path
      PID:4304
      • C:\Windows\SysWOW64\REG.exe
        REG add HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System / v DisableTaskMgr / t REG_DWORD / d 1 / f
        3⤵
        • Modifies registry key
        PID:4080

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmp444C.tmp

    Filesize

    1KB

    MD5

    cffa49d56a15e2b7e56f7b62599fb738

    SHA1

    84cb517369e308c5c93045ef276a24ebfe663adf

    SHA256

    a5a622bfcfe87afa1c21131d34f29484b9cbdd381e74f83f8403d85be55651b3

    SHA512

    4b06aa7f4da4615fc83fd25e1f6f3609b8dd15a9aac64e81c0f98db65856b1e0a5862da1a9cefc2536ca0c27362db11d3100c83525a9af2ebd0feed53fa0f564

  • memory/808-135-0x0000000000000000-mapping.dmp

  • memory/4080-141-0x0000000000000000-mapping.dmp

  • memory/4304-137-0x0000000000000000-mapping.dmp

  • memory/4304-138-0x0000000000400000-0x000000000045A000-memory.dmp

    Filesize

    360KB

  • memory/4304-139-0x0000000006730000-0x0000000006796000-memory.dmp

    Filesize

    408KB

  • memory/4304-140-0x0000000006DF0000-0x0000000006E40000-memory.dmp

    Filesize

    320KB

  • memory/4344-130-0x0000000000680000-0x000000000073C000-memory.dmp

    Filesize

    752KB

  • memory/4344-131-0x0000000005660000-0x0000000005C04000-memory.dmp

    Filesize

    5.6MB

  • memory/4344-132-0x0000000005150000-0x00000000051E2000-memory.dmp

    Filesize

    584KB

  • memory/4344-133-0x0000000005100000-0x000000000510A000-memory.dmp

    Filesize

    40KB

  • memory/4344-134-0x0000000007620000-0x00000000076BC000-memory.dmp

    Filesize

    624KB