Analysis

  • max time kernel
    122s
  • max time network
    125s
  • platform
    windows7_x64
  • resource
    win7-20231023-en
  • resource tags

    arch:x64arch:x86image:win7-20231023-enlocale:en-usos:windows7-x64system
  • submitted
    01-12-2023 09:24

General

  • Target

    SAF-C161CS-LF-CA INFINEON2000 PCS.exe

  • Size

    935KB

  • MD5

    3b339aabaf3bfb3af9d0e0887e554835

  • SHA1

    bb2d2846e92fd0a4c5e0a2040e74a3c7cfab8d02

  • SHA256

    9a1a81688bf7f92903009cceb1e592668a04048deebb264dfb5fd6c7c6fdd650

  • SHA512

    69a49929163d9c6c30630861ceb0e52fa145adfaf1deed43732298d14aabaf7c92ff46af5d14f0bd61a40677534afe63d1aa06599d91273c8846bd368e615871

  • SSDEEP

    24576:SG+Cw0kXuGN5jQypH+jDhtscbfnbOdVSrKHm9SO:6Cw0QuGN5REhbfbmVPm

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.

  • 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).

  • 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 2 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\SAF-C161CS-LF-CA INFINEON2000 PCS.exe
    "C:\Users\Admin\AppData\Local\Temp\SAF-C161CS-LF-CA INFINEON2000 PCS.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2872
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\QAJeFu.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2636
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\QAJeFu" /XML "C:\Users\Admin\AppData\Local\Temp\tmp9B65.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2716
    • C:\Users\Admin\AppData\Local\Temp\SAF-C161CS-LF-CA INFINEON2000 PCS.exe
      "C:\Users\Admin\AppData\Local\Temp\SAF-C161CS-LF-CA INFINEON2000 PCS.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2728

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmp9B65.tmp

    Filesize

    1KB

    MD5

    6c0804a39431b1c38b07110555202b7f

    SHA1

    98d77fc21979931c9b7826e165d4ee38bbda0b7d

    SHA256

    cabda95f7147e0590b4500f636c1d108ebdd00ff7aefe6c13de4568a4cf1659a

    SHA512

    42440a01dde5d7a75ab6f241334623877196d3878f9ac61939bdb3f924f02270446b2fd7ff4f60a28ce5a4a7dc166a5aa3788acde7e071698ef6e58a6d93fd1f

  • C:\Users\Admin\AppData\Roaming\TZCld\TZCld.exe

    Filesize

    935KB

    MD5

    3b339aabaf3bfb3af9d0e0887e554835

    SHA1

    bb2d2846e92fd0a4c5e0a2040e74a3c7cfab8d02

    SHA256

    9a1a81688bf7f92903009cceb1e592668a04048deebb264dfb5fd6c7c6fdd650

    SHA512

    69a49929163d9c6c30630861ceb0e52fa145adfaf1deed43732298d14aabaf7c92ff46af5d14f0bd61a40677534afe63d1aa06599d91273c8846bd368e615871

  • memory/2636-23-0x000000006EFF0000-0x000000006F59B000-memory.dmp

    Filesize

    5.7MB

  • memory/2636-22-0x000000006EFF0000-0x000000006F59B000-memory.dmp

    Filesize

    5.7MB

  • memory/2636-25-0x0000000002650000-0x0000000002690000-memory.dmp

    Filesize

    256KB

  • memory/2636-28-0x000000006EFF0000-0x000000006F59B000-memory.dmp

    Filesize

    5.7MB

  • memory/2636-27-0x0000000002650000-0x0000000002690000-memory.dmp

    Filesize

    256KB

  • memory/2728-41-0x0000000004B10000-0x0000000004B50000-memory.dmp

    Filesize

    256KB

  • memory/2728-30-0x0000000000400000-0x0000000000476000-memory.dmp

    Filesize

    472KB

  • memory/2728-14-0x0000000000400000-0x0000000000476000-memory.dmp

    Filesize

    472KB

  • memory/2728-15-0x0000000000400000-0x0000000000476000-memory.dmp

    Filesize

    472KB

  • memory/2728-17-0x0000000000400000-0x0000000000476000-memory.dmp

    Filesize

    472KB

  • memory/2728-19-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2728-40-0x0000000074BD0000-0x00000000752BE000-memory.dmp

    Filesize

    6.9MB

  • memory/2728-37-0x0000000004B10000-0x0000000004B50000-memory.dmp

    Filesize

    256KB

  • memory/2728-34-0x0000000000400000-0x0000000000476000-memory.dmp

    Filesize

    472KB

  • memory/2728-35-0x0000000074BD0000-0x00000000752BE000-memory.dmp

    Filesize

    6.9MB

  • memory/2728-32-0x0000000000400000-0x0000000000476000-memory.dmp

    Filesize

    472KB

  • memory/2728-12-0x0000000000400000-0x0000000000476000-memory.dmp

    Filesize

    472KB

  • memory/2872-6-0x00000000051B0000-0x0000000005260000-memory.dmp

    Filesize

    704KB

  • memory/2872-5-0x0000000000420000-0x000000000042A000-memory.dmp

    Filesize

    40KB

  • memory/2872-26-0x0000000005070000-0x00000000050B0000-memory.dmp

    Filesize

    256KB

  • memory/2872-3-0x00000000003F0000-0x0000000000406000-memory.dmp

    Filesize

    88KB

  • memory/2872-0-0x0000000000D20000-0x0000000000E10000-memory.dmp

    Filesize

    960KB

  • memory/2872-36-0x0000000074BD0000-0x00000000752BE000-memory.dmp

    Filesize

    6.9MB

  • memory/2872-4-0x0000000000410000-0x0000000000418000-memory.dmp

    Filesize

    32KB

  • memory/2872-1-0x0000000074BD0000-0x00000000752BE000-memory.dmp

    Filesize

    6.9MB

  • memory/2872-2-0x0000000005070000-0x00000000050B0000-memory.dmp

    Filesize

    256KB

  • memory/2872-24-0x0000000074BD0000-0x00000000752BE000-memory.dmp

    Filesize

    6.9MB