Analysis

  • max time kernel
    95s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    16-04-2023 10:27

General

  • Target

    DOCX.exe

  • Size

    606KB

  • MD5

    4caef2ef6f0bf5b2206707c47e2f8e20

  • SHA1

    3e28d2eaf391ad7303b5eb5563ffbb8541a128e3

  • SHA256

    c091b78802bae597d3ace620d49874112c1b8063138042a9a7b3b05da64522fa

  • SHA512

    d8b3b05c30715297cc2561891a9924e06a02e420ddf82d941775dcc3689df7f454d1e99866c3767bd738aa9f08d4df37038ecb49856feff26aad8a47fdae43d7

  • SSDEEP

    12288:cR2s+baW6dYIdKFFNfB3M9U9O2QnDXAanVY:sgbaPlyFNfFM95ZXB

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

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

  • 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 WriteProcessMemory 14 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\DOCX.exe
    "C:\Users\Admin\AppData\Local\Temp\DOCX.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3596
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\JTiUOTaS.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4008
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\JTiUOTaS" /XML "C:\Users\Admin\AppData\Local\Temp\tmpC6EA.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:948
    • C:\Users\Admin\AppData\Local\Temp\DOCX.exe
      "C:\Users\Admin\AppData\Local\Temp\DOCX.exe"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:3316

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

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

    Filesize

    1KB

    MD5

    33d62ef2c354f839a8b2b987e6ee41e7

    SHA1

    d76f64ac411a61f3f232f7f9f7b179bd34042226

    SHA256

    f6a84062cb11ccf802324692c2c4c48543377cf717d98efd5de695ed6d0a97d9

    SHA512

    d68a426b2f4646bb45e2267d60680166a8effb9a461e5a07756ba13a3bdf36b27e6e9777d945d03a62362e6976e92214c53ffc7c4f03ec28d3fcfc9a442c5e3c

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_sddhfzmj.ifs.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Local\Temp\tmpC6EA.tmp

    Filesize

    1KB

    MD5

    2131996bc2235b92ef8f31e1faaff6d6

    SHA1

    484cc1efdd531004981fcb08a959c1b00f3d3bef

    SHA256

    9c0db4f840e692bfa0aaa665d19af5df434877a647c7b826ad1fcbd43a64cad6

    SHA512

    aaba62927dec80f8094a67faa669338c6822a05536040d8d222d0fa61f2d18d3ab307f0dc7ed18bc8f2163de0b8acd0ed80b62925e630033d49fdec6fe1a97d0

  • memory/3316-152-0x00000000051A0000-0x0000000005206000-memory.dmp

    Filesize

    408KB

  • memory/3316-165-0x0000000005360000-0x0000000005370000-memory.dmp

    Filesize

    64KB

  • memory/3316-147-0x0000000000400000-0x0000000000430000-memory.dmp

    Filesize

    192KB

  • memory/3316-184-0x0000000006800000-0x00000000069C2000-memory.dmp

    Filesize

    1.8MB

  • memory/3316-183-0x00000000065E0000-0x0000000006630000-memory.dmp

    Filesize

    320KB

  • memory/3316-191-0x0000000005360000-0x0000000005370000-memory.dmp

    Filesize

    64KB

  • memory/3596-133-0x0000000000430000-0x00000000004CE000-memory.dmp

    Filesize

    632KB

  • memory/3596-138-0x0000000005030000-0x0000000005040000-memory.dmp

    Filesize

    64KB

  • memory/3596-139-0x0000000005EF0000-0x0000000005F8C000-memory.dmp

    Filesize

    624KB

  • memory/3596-134-0x00000000054E0000-0x0000000005A84000-memory.dmp

    Filesize

    5.6MB

  • memory/3596-136-0x0000000005030000-0x0000000005040000-memory.dmp

    Filesize

    64KB

  • memory/3596-135-0x0000000004E70000-0x0000000004F02000-memory.dmp

    Filesize

    584KB

  • memory/3596-137-0x0000000005020000-0x000000000502A000-memory.dmp

    Filesize

    40KB

  • memory/4008-187-0x00000000073E0000-0x00000000073FA000-memory.dmp

    Filesize

    104KB

  • memory/4008-180-0x00000000076E0000-0x0000000007D5A000-memory.dmp

    Filesize

    6.5MB

  • memory/4008-154-0x0000000004E80000-0x0000000004EE6000-memory.dmp

    Filesize

    408KB

  • memory/4008-146-0x0000000005000000-0x0000000005628000-memory.dmp

    Filesize

    6.2MB

  • memory/4008-166-0x0000000002590000-0x00000000025A0000-memory.dmp

    Filesize

    64KB

  • memory/4008-167-0x0000000006360000-0x0000000006392000-memory.dmp

    Filesize

    200KB

  • memory/4008-168-0x0000000070D20000-0x0000000070D6C000-memory.dmp

    Filesize

    304KB

  • memory/4008-178-0x0000000006340000-0x000000000635E000-memory.dmp

    Filesize

    120KB

  • memory/4008-179-0x000000007F480000-0x000000007F490000-memory.dmp

    Filesize

    64KB

  • memory/4008-153-0x0000000002590000-0x00000000025A0000-memory.dmp

    Filesize

    64KB

  • memory/4008-181-0x0000000007090000-0x00000000070AA000-memory.dmp

    Filesize

    104KB

  • memory/4008-150-0x0000000002590000-0x00000000025A0000-memory.dmp

    Filesize

    64KB

  • memory/4008-182-0x0000000007100000-0x000000000710A000-memory.dmp

    Filesize

    40KB

  • memory/4008-151-0x0000000004DE0000-0x0000000004E02000-memory.dmp

    Filesize

    136KB

  • memory/4008-185-0x0000000007310000-0x00000000073A6000-memory.dmp

    Filesize

    600KB

  • memory/4008-186-0x00000000072D0000-0x00000000072DE000-memory.dmp

    Filesize

    56KB

  • memory/4008-164-0x0000000005D90000-0x0000000005DAE000-memory.dmp

    Filesize

    120KB

  • memory/4008-188-0x00000000073C0000-0x00000000073C8000-memory.dmp

    Filesize

    32KB

  • memory/4008-144-0x0000000002490000-0x00000000024C6000-memory.dmp

    Filesize

    216KB