Analysis

  • max time kernel
    121s
  • max time network
    122s
  • platform
    windows7_x64
  • resource
    win7-20231129-en
  • resource tags

    arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
  • submitted
    05-12-2023 08:31

General

  • Target

    PO.exe

  • Size

    740KB

  • MD5

    b8544d8facfb793edab9d38921933728

  • SHA1

    5ab5b9c19dd1cf189b49be90233e32dacd32e9e6

  • SHA256

    a81e919be20c26807dc7d775ccdc026d4a9daf0116661dff5e3fbdaf29effe19

  • SHA512

    f59aee69180a55f43c35ee32cb0a3a4b58994fd25a195d7557719a0f7b6c482fe561fd13a239772e32a04512391ffaed520ab85399eb0dbff75356585e88ac6f

  • SSDEEP

    12288:DWVretW8G34/uK45+po2ys7l/yOKRXDGz5aTbFQG1uJ073ZCeg/:4x34/up+pJyoaOMTGz5atQZJ0r

Malware Config

Extracted

Family

agenttesla

Credentials

Signatures

  • AgentTesla

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

  • 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
  • Adds Run key to start application 2 TTPs 1 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.

  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • 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 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\PO.exe
    "C:\Users\Admin\AppData\Local\Temp\PO.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2180
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\WLJIUp.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1364
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\WLJIUp" /XML "C:\Users\Admin\AppData\Local\Temp\tmp452B.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2252
    • C:\Users\Admin\AppData\Local\Temp\PO.exe
      "C:\Users\Admin\AppData\Local\Temp\PO.exe"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Adds Run key to start application
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:2648

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmp452B.tmp

    Filesize

    1KB

    MD5

    680558c604cba8527dfb1745fc000309

    SHA1

    371a6031bbad865edc7df34face61c29ee123707

    SHA256

    48b5df2980870e8dba48c691e54c0beeefbed76398c87bebb83617a0db98c6ff

    SHA512

    2b73dab72bb5f808a2c97eeeda3575e387ca2a54e9f063e52282960082283b66c2905311b14328b5a9215d2b4baa267fa8a5f8a4ea94b17e8c9efc2136e8fc61

  • memory/1364-33-0x000000006E920000-0x000000006EECB000-memory.dmp

    Filesize

    5.7MB

  • memory/1364-31-0x0000000002A20000-0x0000000002A60000-memory.dmp

    Filesize

    256KB

  • memory/1364-32-0x0000000002A20000-0x0000000002A60000-memory.dmp

    Filesize

    256KB

  • memory/1364-29-0x0000000002A20000-0x0000000002A60000-memory.dmp

    Filesize

    256KB

  • memory/1364-28-0x000000006E920000-0x000000006EECB000-memory.dmp

    Filesize

    5.7MB

  • memory/1364-27-0x000000006E920000-0x000000006EECB000-memory.dmp

    Filesize

    5.7MB

  • memory/2180-6-0x0000000005040000-0x00000000050AA000-memory.dmp

    Filesize

    424KB

  • memory/2180-26-0x0000000074690000-0x0000000074D7E000-memory.dmp

    Filesize

    6.9MB

  • memory/2180-1-0x0000000074690000-0x0000000074D7E000-memory.dmp

    Filesize

    6.9MB

  • memory/2180-2-0x0000000004120000-0x0000000004160000-memory.dmp

    Filesize

    256KB

  • memory/2180-3-0x0000000000480000-0x0000000000498000-memory.dmp

    Filesize

    96KB

  • memory/2180-4-0x00000000006B0000-0x00000000006B8000-memory.dmp

    Filesize

    32KB

  • memory/2180-5-0x00000000006C0000-0x00000000006CA000-memory.dmp

    Filesize

    40KB

  • memory/2180-0-0x0000000000110000-0x00000000001D0000-memory.dmp

    Filesize

    768KB

  • memory/2648-25-0x0000000000400000-0x0000000000430000-memory.dmp

    Filesize

    192KB

  • memory/2648-14-0x0000000000400000-0x0000000000430000-memory.dmp

    Filesize

    192KB

  • memory/2648-23-0x0000000000400000-0x0000000000430000-memory.dmp

    Filesize

    192KB

  • memory/2648-21-0x0000000000400000-0x0000000000430000-memory.dmp

    Filesize

    192KB

  • memory/2648-19-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2648-30-0x0000000074690000-0x0000000074D7E000-memory.dmp

    Filesize

    6.9MB

  • memory/2648-18-0x0000000000400000-0x0000000000430000-memory.dmp

    Filesize

    192KB

  • memory/2648-17-0x0000000000400000-0x0000000000430000-memory.dmp

    Filesize

    192KB

  • memory/2648-16-0x0000000000400000-0x0000000000430000-memory.dmp

    Filesize

    192KB

  • memory/2648-35-0x0000000074690000-0x0000000074D7E000-memory.dmp

    Filesize

    6.9MB

  • memory/2648-36-0x0000000000750000-0x0000000000790000-memory.dmp

    Filesize

    256KB