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Analysis

  • max time kernel
    153s
  • max time network
    159s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230915-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230915-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22/09/2023, 14:55

General

  • Target

    DOC73287284262.bat.exe

  • Size

    527KB

  • MD5

    7957ee20f42e7158e0fd2cd73e17b436

  • SHA1

    aed7c6736ede54b4d4eda9ff3cbb8e510eef2a88

  • SHA256

    48e030cc0ca1af0e027949d1f16b86226e352065d9bf5eba4ca7719efe61b0cf

  • SHA512

    853ceb5c1465ff9ec2df913f898710795517f5ca7b787dc63e9b9483d72785311f954e886659dc7592ce74269b65fe93e958ffde4935cf2cc7625217dc0f8fff

  • SSDEEP

    12288:wuvgIb5G6uxzXlsjuapg2dKhtjWHmYZeIwEw:Zu52gDbYS

Malware Config

Extracted

Family

agenttesla

Credentials

Signatures

  • AgentTesla

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

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • 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
  • 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 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\DOC73287284262.bat.exe
    "C:\Users\Admin\AppData\Local\Temp\DOC73287284262.bat.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:624
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\DaumicSuB" /XML "C:\Users\Admin\AppData\Local\Temp\tmpC32C.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2812
    • C:\Users\Admin\AppData\Local\Temp\DOC73287284262.bat.exe
      "{path}"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • outlook_office_path
      • outlook_win_path
      PID:944

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\DOC73287284262.bat.exe.log

    Filesize

    1KB

    MD5

    17573558c4e714f606f997e5157afaac

    SHA1

    13e16e9415ceef429aaf124139671ebeca09ed23

    SHA256

    c18db6aecad2436da4a63ff26af4e3a337cca48f01c21b8db494fe5ccc60e553

    SHA512

    f4edf13f05a0d142e4dd42802098c8c44988ee8869621a62c2b565a77c9a95857f636583ff8d6d9baa366603d98b9bfbf1fc75bc6f9f8f83c80cb1215b2941cc

  • C:\Users\Admin\AppData\Local\Temp\tmpC32C.tmp

    Filesize

    1KB

    MD5

    74efac8fe813e3be198185c8d1377588

    SHA1

    6044074e4a83b6dccaa83fd9134caaa9de8addc7

    SHA256

    98f3ea91a965378353ec16b45e1ffc133f3d5c0bc5e7f2923afd9945afa95859

    SHA512

    cc57ed231c9e07a5768cce1a6982c123c6c0109fa0cea07234240d8d4e4796c82bf99290ac0d979a71f7e9a5ea9dd4e86d8bb65f066e1ebf9b0478fe46261901

  • memory/624-5-0x00000000052F0000-0x0000000005300000-memory.dmp

    Filesize

    64KB

  • memory/624-2-0x0000000004FF0000-0x000000000508C000-memory.dmp

    Filesize

    624KB

  • memory/624-4-0x0000000005090000-0x0000000005122000-memory.dmp

    Filesize

    584KB

  • memory/624-1-0x0000000074970000-0x0000000075120000-memory.dmp

    Filesize

    7.7MB

  • memory/624-6-0x0000000005190000-0x000000000519A000-memory.dmp

    Filesize

    40KB

  • memory/624-7-0x0000000005200000-0x0000000005256000-memory.dmp

    Filesize

    344KB

  • memory/624-8-0x00000000063A0000-0x00000000063AC000-memory.dmp

    Filesize

    48KB

  • memory/624-9-0x0000000074970000-0x0000000075120000-memory.dmp

    Filesize

    7.7MB

  • memory/624-10-0x00000000052F0000-0x0000000005300000-memory.dmp

    Filesize

    64KB

  • memory/624-11-0x0000000006530000-0x00000000065AC000-memory.dmp

    Filesize

    496KB

  • memory/624-12-0x00000000063C0000-0x0000000006402000-memory.dmp

    Filesize

    264KB

  • memory/624-3-0x0000000005640000-0x0000000005BE4000-memory.dmp

    Filesize

    5.6MB

  • memory/624-19-0x0000000074970000-0x0000000075120000-memory.dmp

    Filesize

    7.7MB

  • memory/624-0-0x0000000000660000-0x00000000006EA000-memory.dmp

    Filesize

    552KB

  • memory/944-16-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/944-20-0x0000000074970000-0x0000000075120000-memory.dmp

    Filesize

    7.7MB

  • memory/944-21-0x0000000005280000-0x0000000005290000-memory.dmp

    Filesize

    64KB

  • memory/944-22-0x0000000005290000-0x00000000052F6000-memory.dmp

    Filesize

    408KB

  • memory/944-23-0x0000000006070000-0x00000000060C0000-memory.dmp

    Filesize

    320KB

  • memory/944-24-0x0000000074970000-0x0000000075120000-memory.dmp

    Filesize

    7.7MB

  • memory/944-25-0x0000000005280000-0x0000000005290000-memory.dmp

    Filesize

    64KB