Analysis

  • max time kernel
    120s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-20231201-en
  • resource tags

    arch:x64arch:x86image:win7-20231201-enlocale:en-usos:windows7-x64system
  • submitted
    08-12-2023 02:40

General

  • Target

    Invoice.exe

  • Size

    603KB

  • MD5

    3552552714e612e9c9bef9c2684b9341

  • SHA1

    a547d614934e54d862e7d18b31a18cea0227669f

  • SHA256

    16b256209f831283dae3df4c0accba88f2c40181efda89a644e2948bb4d7c8dc

  • SHA512

    906bedfd82ae522e8a48a174ce3abfb7eb2cd5b97f77ffb8afe0f85a723e616a61b23568f0abb97b87800a4e90cda0b88a2914c5363daba973acd7c1b9df65b1

  • SSDEEP

    12288:tBqW3HA+GP0C5vkEFR7LOGJXWSNhScAueH5qzr:t7kJ58EFNWGhvkq

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 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 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\Invoice.exe
    "C:\Users\Admin\AppData\Local\Temp\Invoice.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2524
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\pgmlkvLgopP.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2312
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\pgmlkvLgopP" /XML "C:\Users\Admin\AppData\Local\Temp\tmp4E01.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2788
    • C:\Users\Admin\AppData\Local\Temp\Invoice.exe
      "C:\Users\Admin\AppData\Local\Temp\Invoice.exe"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Adds Run key to start application
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:2824

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmp4E01.tmp

    Filesize

    1KB

    MD5

    e5c3e3a569733d9f036d032971cd9290

    SHA1

    55d90d3a758b5dda924857db8b190cdbe3786ac7

    SHA256

    dae613bd4e670915354b6b30bb7d9293e3518a66e02bbcf1c140a0e2161e4d1e

    SHA512

    8afb3003352f4649d060b65aebfce63802e6c9a9d5e8c51890856298be9c37c324ae869e05d6c739271ebbf06b14faff0d7b368d551df5535aa7ecfe692af103

  • memory/2312-35-0x000000006E540000-0x000000006EAEB000-memory.dmp

    Filesize

    5.7MB

  • memory/2312-33-0x0000000002630000-0x0000000002670000-memory.dmp

    Filesize

    256KB

  • memory/2312-34-0x0000000002630000-0x0000000002670000-memory.dmp

    Filesize

    256KB

  • memory/2312-30-0x000000006E540000-0x000000006EAEB000-memory.dmp

    Filesize

    5.7MB

  • memory/2312-29-0x000000006E540000-0x000000006EAEB000-memory.dmp

    Filesize

    5.7MB

  • memory/2524-6-0x0000000007F30000-0x0000000007F9A000-memory.dmp

    Filesize

    424KB

  • memory/2524-0-0x0000000000880000-0x000000000091E000-memory.dmp

    Filesize

    632KB

  • memory/2524-1-0x0000000074200000-0x00000000748EE000-memory.dmp

    Filesize

    6.9MB

  • memory/2524-2-0x00000000020F0000-0x0000000002130000-memory.dmp

    Filesize

    256KB

  • memory/2524-3-0x0000000002180000-0x000000000219A000-memory.dmp

    Filesize

    104KB

  • memory/2524-4-0x00000000007E0000-0x00000000007E8000-memory.dmp

    Filesize

    32KB

  • memory/2524-5-0x00000000020E0000-0x00000000020EA000-memory.dmp

    Filesize

    40KB

  • memory/2524-28-0x0000000074200000-0x00000000748EE000-memory.dmp

    Filesize

    6.9MB

  • memory/2824-27-0x0000000000400000-0x0000000000430000-memory.dmp

    Filesize

    192KB

  • memory/2824-25-0x0000000000400000-0x0000000000430000-memory.dmp

    Filesize

    192KB

  • memory/2824-23-0x0000000000400000-0x0000000000430000-memory.dmp

    Filesize

    192KB

  • memory/2824-21-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2824-19-0x0000000000400000-0x0000000000430000-memory.dmp

    Filesize

    192KB

  • memory/2824-31-0x0000000074200000-0x00000000748EE000-memory.dmp

    Filesize

    6.9MB

  • memory/2824-32-0x0000000004C30000-0x0000000004C70000-memory.dmp

    Filesize

    256KB

  • memory/2824-17-0x0000000000400000-0x0000000000430000-memory.dmp

    Filesize

    192KB

  • memory/2824-16-0x0000000000400000-0x0000000000430000-memory.dmp

    Filesize

    192KB

  • memory/2824-14-0x0000000000400000-0x0000000000430000-memory.dmp

    Filesize

    192KB

  • memory/2824-37-0x0000000074200000-0x00000000748EE000-memory.dmp

    Filesize

    6.9MB

  • memory/2824-38-0x0000000004C30000-0x0000000004C70000-memory.dmp

    Filesize

    256KB