Analysis

  • max time kernel
    122s
  • max time network
    130s
  • platform
    windows7_x64
  • resource
    win7-20230831-en
  • resource tags

    arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system
  • submitted
    12/10/2023, 04:26

General

  • Target

    Halkbank_Ekstre_20230918_073809_405251-PDF.exe

  • Size

    870KB

  • MD5

    84fc8471bb943cd772536922808494be

  • SHA1

    c05e01390eb3f59f58ecf92e68c3975197c1f1c6

  • SHA256

    fec13aa5cd5a5f883361b1192f68fe5f76da2e01437d99d767c383f5137da618

  • SHA512

    1e7c4463f89231072242cffdef68a732322884282e8ac56e8aab9887d1c65ed7e496a9f1e3b0ecc10b03ffc01c03db6643428568df4e077233794331f5343ad6

  • SSDEEP

    12288:Pm2iNNEisUH/hPBKkKHUa01o3DvwuxG/UffSaxGkHIeCRoFQUW9d+pnEcTgVOGEo:e1XEWpPBKkmQo3jwd/UfDBjQ9+ixW1q

Malware Config

Extracted

Family

agenttesla

C2

https://api.telegram.org/bot6315598701:AAF2CsdeWHvEuw0HSURtUQQu4FuqwvM5AOA/

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
  • Looks up external IP address via web service 2 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 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20230918_073809_405251-PDF.exe
    "C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20230918_073809_405251-PDF.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2040
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\TBjeFzdy.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2516
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\TBjeFzdy" /XML "C:\Users\Admin\AppData\Local\Temp\tmp686.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2472
    • C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20230918_073809_405251-PDF.exe
      "C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20230918_073809_405251-PDF.exe"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • outlook_office_path
      • outlook_win_path
      PID:2284

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmp686.tmp

    Filesize

    1KB

    MD5

    d0572765d94b15ac252aa6accf87e8c9

    SHA1

    da0f0f042184cd1597eaf4ab2e516293b9090766

    SHA256

    b5610e4361ca902deaddaabe95d9093b876d786f44eb3df99eb0f84f5909ba7d

    SHA512

    f430af16bb8dd2326beecdda3c330b80c669b539f0addb4c4198fd37ef35223ed4b1fa31fe740b194a70c6cb8eb60df5a5d0553cd4be685729b8c2d50279d4ca

  • memory/2040-1-0x00000000747A0000-0x0000000074E8E000-memory.dmp

    Filesize

    6.9MB

  • memory/2040-0-0x00000000012B0000-0x0000000001390000-memory.dmp

    Filesize

    896KB

  • memory/2040-2-0x0000000001240000-0x0000000001280000-memory.dmp

    Filesize

    256KB

  • memory/2040-3-0x0000000000340000-0x0000000000356000-memory.dmp

    Filesize

    88KB

  • memory/2040-4-0x00000000747A0000-0x0000000074E8E000-memory.dmp

    Filesize

    6.9MB

  • memory/2040-5-0x0000000001240000-0x0000000001280000-memory.dmp

    Filesize

    256KB

  • memory/2040-6-0x00000000003B0000-0x00000000003B8000-memory.dmp

    Filesize

    32KB

  • memory/2040-7-0x00000000003C0000-0x00000000003CC000-memory.dmp

    Filesize

    48KB

  • memory/2040-8-0x0000000005970000-0x00000000059EE000-memory.dmp

    Filesize

    504KB

  • memory/2040-25-0x00000000747A0000-0x0000000074E8E000-memory.dmp

    Filesize

    6.9MB

  • memory/2284-18-0x0000000000400000-0x0000000000444000-memory.dmp

    Filesize

    272KB

  • memory/2284-31-0x00000000003B0000-0x00000000003F0000-memory.dmp

    Filesize

    256KB

  • memory/2284-19-0x0000000000400000-0x0000000000444000-memory.dmp

    Filesize

    272KB

  • memory/2284-16-0x0000000000400000-0x0000000000444000-memory.dmp

    Filesize

    272KB

  • memory/2284-22-0x0000000000400000-0x0000000000444000-memory.dmp

    Filesize

    272KB

  • memory/2284-14-0x0000000000400000-0x0000000000444000-memory.dmp

    Filesize

    272KB

  • memory/2284-27-0x0000000000400000-0x0000000000444000-memory.dmp

    Filesize

    272KB

  • memory/2284-24-0x0000000000400000-0x0000000000444000-memory.dmp

    Filesize

    272KB

  • memory/2284-30-0x0000000074720000-0x0000000074E0E000-memory.dmp

    Filesize

    6.9MB

  • memory/2284-20-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2284-38-0x00000000003B0000-0x00000000003F0000-memory.dmp

    Filesize

    256KB

  • memory/2284-37-0x0000000074720000-0x0000000074E0E000-memory.dmp

    Filesize

    6.9MB

  • memory/2516-34-0x0000000002240000-0x0000000002280000-memory.dmp

    Filesize

    256KB

  • memory/2516-35-0x0000000002240000-0x0000000002280000-memory.dmp

    Filesize

    256KB

  • memory/2516-36-0x0000000072C80000-0x000000007322B000-memory.dmp

    Filesize

    5.7MB

  • memory/2516-33-0x0000000072C80000-0x000000007322B000-memory.dmp

    Filesize

    5.7MB

  • memory/2516-32-0x0000000072C80000-0x000000007322B000-memory.dmp

    Filesize

    5.7MB