Analysis

  • max time kernel
    113s
  • max time network
    87s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    11-12-2022 01:47

General

  • Target

    5fe027cf78cba3c3e99db784eff2511d0d98b0f651fb840098f4a2a3f6c7ad60.exe

  • Size

    871KB

  • MD5

    94370cac5c6a71ef3b1ac252d8c2d1f0

  • SHA1

    99e3a287c919446a51a29bb41b15e392381eb4d7

  • SHA256

    5fe027cf78cba3c3e99db784eff2511d0d98b0f651fb840098f4a2a3f6c7ad60

  • SHA512

    1a5a4123aae1036a29b20f559f1d0b78ff88fdceeb842106fdb27e34ff7e0a150f1e200ebd07bef56ba2b580b34eac4513e07719ab6ebc1482f9c7364ae3e431

  • SSDEEP

    24576:X8DsTl9mUzgCzfsWfJHDxtMcKQ1Qj2SoYQi3:XAsT3dJltb1Qj6Yf

Malware Config

Extracted

Family

agenttesla

C2

https://api.telegram.org/bot5988122207:AAF1_KgDENpI5X2i7Phd669ok2u6BhL3kK0/

Signatures

  • AgentTesla

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

  • Looks for VirtualBox Guest Additions in registry 2 TTPs 1 IoCs
  • Looks for VMWare Tools registry key 2 TTPs 1 IoCs
  • Checks BIOS information in registry 2 TTPs 2 IoCs

    BIOS information is often read in order to detect sandboxing environments.

  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • Reads user/profile data of local email clients 2 TTPs

    Email clients store some user data on disk where infostealers will often target it.

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Maps connected drives based on registry 3 TTPs 2 IoCs

    Disk information is often read in order to detect sandboxing environments.

  • 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.

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\5fe027cf78cba3c3e99db784eff2511d0d98b0f651fb840098f4a2a3f6c7ad60.exe
    "C:\Users\Admin\AppData\Local\Temp\5fe027cf78cba3c3e99db784eff2511d0d98b0f651fb840098f4a2a3f6c7ad60.exe"
    1⤵
    • Looks for VirtualBox Guest Additions in registry
    • Looks for VMWare Tools registry key
    • Checks BIOS information in registry
    • Maps connected drives based on registry
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1672
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\BATNhTK.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1528
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\BATNhTK" /XML "C:\Users\Admin\AppData\Local\Temp\tmpFF27.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:680
    • C:\Users\Admin\AppData\Local\Temp\5fe027cf78cba3c3e99db784eff2511d0d98b0f651fb840098f4a2a3f6c7ad60.exe
      "C:\Users\Admin\AppData\Local\Temp\5fe027cf78cba3c3e99db784eff2511d0d98b0f651fb840098f4a2a3f6c7ad60.exe"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:1760

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmpFF27.tmp

    Filesize

    1KB

    MD5

    40dfaf5680e4fb85ab986279c63207e8

    SHA1

    b4f899873717d706e38ff79631b66b2dcf55a2e8

    SHA256

    4e4a1d442fc2957a003e96a29ea647501b7d8d22885a7d7a16c54994f4e87ffb

    SHA512

    ddd85f31778433bb04009241161e78b15329cfeec00db2a3bf120c7a9b2d1c267108bff16e5779a31159147720e2dc8ef2cbf79e8a0fd3a0427f6891268d5eff

  • memory/680-61-0x0000000000000000-mapping.dmp

  • memory/1528-59-0x0000000000000000-mapping.dmp

  • memory/1528-77-0x000000006ECE0000-0x000000006F28B000-memory.dmp

    Filesize

    5.7MB

  • memory/1528-76-0x000000006ECE0000-0x000000006F28B000-memory.dmp

    Filesize

    5.7MB

  • memory/1672-63-0x0000000005620000-0x0000000005658000-memory.dmp

    Filesize

    224KB

  • memory/1672-58-0x0000000005A60000-0x0000000005AD0000-memory.dmp

    Filesize

    448KB

  • memory/1672-57-0x0000000000300000-0x000000000030E000-memory.dmp

    Filesize

    56KB

  • memory/1672-54-0x0000000000F60000-0x0000000001040000-memory.dmp

    Filesize

    896KB

  • memory/1672-55-0x0000000075841000-0x0000000075843000-memory.dmp

    Filesize

    8KB

  • memory/1672-56-0x00000000002D0000-0x00000000002F2000-memory.dmp

    Filesize

    136KB

  • memory/1760-68-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/1760-67-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/1760-69-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/1760-70-0x00000000004324AE-mapping.dmp

  • memory/1760-72-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/1760-74-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/1760-65-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/1760-64-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB