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Analysis

  • max time kernel
    143s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    01/02/2024, 01:28

General

  • Target

    c527ff1b18581fbd4e2813b51b414b5ffdee8c49ead1476ea0ed9a1dfacc6659.exe

  • Size

    668KB

  • MD5

    1bb1095059a6f5f01895f3c6c906a50a

  • SHA1

    cb60951acc0a0e09db96729e644ca4bda586992e

  • SHA256

    c527ff1b18581fbd4e2813b51b414b5ffdee8c49ead1476ea0ed9a1dfacc6659

  • SHA512

    45981b12bfbfcb69465ece150da300eec6454e0468d3eb7daebbc8171376f576f8278533f870b458d9a2406b9335b91ca3dfde9a777c8f4de099300d6a7bcf0c

  • SSDEEP

    12288:IAN8j8qshDs5E6xMSM5/SD5iT5YsuEGMVhbDu6ROybSS0qAn/62:FN8bshIiCDQT51uErRDucHSS0RT

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
  • 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 7 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\c527ff1b18581fbd4e2813b51b414b5ffdee8c49ead1476ea0ed9a1dfacc6659.exe
    "C:\Users\Admin\AppData\Local\Temp\c527ff1b18581fbd4e2813b51b414b5ffdee8c49ead1476ea0ed9a1dfacc6659.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2496
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\c527ff1b18581fbd4e2813b51b414b5ffdee8c49ead1476ea0ed9a1dfacc6659.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3244
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\fcPpSwwTYIRf.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4104
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\fcPpSwwTYIRf" /XML "C:\Users\Admin\AppData\Local\Temp\tmpC033.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:4492
    • C:\Users\Admin\AppData\Local\Temp\c527ff1b18581fbd4e2813b51b414b5ffdee8c49ead1476ea0ed9a1dfacc6659.exe
      "C:\Users\Admin\AppData\Local\Temp\c527ff1b18581fbd4e2813b51b414b5ffdee8c49ead1476ea0ed9a1dfacc6659.exe"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • outlook_office_path
      • outlook_win_path
      PID:4996

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\c527ff1b18581fbd4e2813b51b414b5ffdee8c49ead1476ea0ed9a1dfacc6659.exe.log

    Filesize

    1KB

    MD5

    b7b9acb869ccc7f7ecb5304ec0384dee

    SHA1

    6a90751c95817903ee833d59a0abbef425a613b3

    SHA256

    8cb00a15cd942a1861c573d86d6fb430512c8e2f80f6349f48b16b8709ca7aa4

    SHA512

    7bec881ac5f59ac26f1be1e7e26d63f040c06369de10c1c246e531a4395d27c335d9acc647ecdedb48ed37bdc2dc405a4cfc11762e1c00659a49be259eaf8764

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_rgv1bn04.yyh.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Local\Temp\tmpC033.tmp

    Filesize

    1KB

    MD5

    470403569b275d70c712b62245f3b5bc

    SHA1

    b5915a20aaf4464a3729265213e2c55dcfb604ba

    SHA256

    6cf9f1063c366cb163ac8049cd1105211212a458d5dddb7a41ad6dabc9bb425d

    SHA512

    e0417621e60416a49eeeeddcd28b9892c4dd55e1d402531653b4505dadc0ace2327f36e9e887289d34a208c524e9e2fe64a16884bcf437e706e14579ff13c321

  • memory/2496-4-0x00000000058E0000-0x0000000005C34000-memory.dmp

    Filesize

    3.3MB

  • memory/2496-10-0x0000000006BE0000-0x0000000006C5E000-memory.dmp

    Filesize

    504KB

  • memory/2496-5-0x0000000005000000-0x0000000005010000-memory.dmp

    Filesize

    64KB

  • memory/2496-6-0x0000000005040000-0x000000000504A000-memory.dmp

    Filesize

    40KB

  • memory/2496-7-0x00000000051A0000-0x00000000051BC000-memory.dmp

    Filesize

    112KB

  • memory/2496-8-0x00000000051D0000-0x00000000051DE000-memory.dmp

    Filesize

    56KB

  • memory/2496-9-0x00000000052F0000-0x0000000005304000-memory.dmp

    Filesize

    80KB

  • memory/2496-22-0x0000000005000000-0x0000000005010000-memory.dmp

    Filesize

    64KB

  • memory/2496-11-0x0000000009280000-0x000000000931C000-memory.dmp

    Filesize

    624KB

  • memory/2496-3-0x0000000004E20000-0x0000000004EB2000-memory.dmp

    Filesize

    584KB

  • memory/2496-17-0x0000000074F10000-0x00000000756C0000-memory.dmp

    Filesize

    7.7MB

  • memory/2496-0-0x0000000000300000-0x00000000003AE000-memory.dmp

    Filesize

    696KB

  • memory/2496-33-0x0000000074F10000-0x00000000756C0000-memory.dmp

    Filesize

    7.7MB

  • memory/2496-2-0x0000000005330000-0x00000000058D4000-memory.dmp

    Filesize

    5.6MB

  • memory/2496-1-0x0000000074F10000-0x00000000756C0000-memory.dmp

    Filesize

    7.7MB

  • memory/3244-32-0x00000000058C0000-0x0000000005926000-memory.dmp

    Filesize

    408KB

  • memory/3244-80-0x0000000007160000-0x0000000007203000-memory.dmp

    Filesize

    652KB

  • memory/3244-20-0x00000000027B0000-0x00000000027C0000-memory.dmp

    Filesize

    64KB

  • memory/3244-93-0x0000000074F10000-0x00000000756C0000-memory.dmp

    Filesize

    7.7MB

  • memory/3244-90-0x0000000007580000-0x0000000007588000-memory.dmp

    Filesize

    32KB

  • memory/3244-21-0x00000000027B0000-0x00000000027C0000-memory.dmp

    Filesize

    64KB

  • memory/3244-86-0x0000000007460000-0x0000000007471000-memory.dmp

    Filesize

    68KB

  • memory/3244-81-0x00000000078B0000-0x0000000007F2A000-memory.dmp

    Filesize

    6.5MB

  • memory/3244-18-0x0000000005170000-0x0000000005798000-memory.dmp

    Filesize

    6.2MB

  • memory/3244-56-0x000000007EF20000-0x000000007EF30000-memory.dmp

    Filesize

    64KB

  • memory/3244-19-0x0000000074F10000-0x00000000756C0000-memory.dmp

    Filesize

    7.7MB

  • memory/3244-16-0x0000000002610000-0x0000000002646000-memory.dmp

    Filesize

    216KB

  • memory/3244-29-0x0000000005080000-0x00000000050A2000-memory.dmp

    Filesize

    136KB

  • memory/3244-53-0x0000000005F40000-0x0000000005F5E000-memory.dmp

    Filesize

    120KB

  • memory/3244-54-0x0000000005FD0000-0x000000000601C000-memory.dmp

    Filesize

    304KB

  • memory/3244-55-0x00000000027B0000-0x00000000027C0000-memory.dmp

    Filesize

    64KB

  • memory/3244-58-0x0000000071050000-0x000000007109C000-memory.dmp

    Filesize

    304KB

  • memory/3244-69-0x0000000006500000-0x000000000651E000-memory.dmp

    Filesize

    120KB

  • memory/3244-57-0x0000000006F20000-0x0000000006F52000-memory.dmp

    Filesize

    200KB

  • memory/4104-25-0x0000000074F10000-0x00000000756C0000-memory.dmp

    Filesize

    7.7MB

  • memory/4104-88-0x00000000079C0000-0x00000000079D4000-memory.dmp

    Filesize

    80KB

  • memory/4104-70-0x0000000071050000-0x000000007109C000-memory.dmp

    Filesize

    304KB

  • memory/4104-23-0x0000000002AF0000-0x0000000002B00000-memory.dmp

    Filesize

    64KB

  • memory/4104-82-0x0000000007780000-0x000000000779A000-memory.dmp

    Filesize

    104KB

  • memory/4104-94-0x0000000074F10000-0x00000000756C0000-memory.dmp

    Filesize

    7.7MB

  • memory/4104-83-0x00000000077F0000-0x00000000077FA000-memory.dmp

    Filesize

    40KB

  • memory/4104-85-0x0000000007A00000-0x0000000007A96000-memory.dmp

    Filesize

    600KB

  • memory/4104-31-0x0000000005BF0000-0x0000000005C56000-memory.dmp

    Filesize

    408KB

  • memory/4104-59-0x000000007FA40000-0x000000007FA50000-memory.dmp

    Filesize

    64KB

  • memory/4104-87-0x00000000079B0000-0x00000000079BE000-memory.dmp

    Filesize

    56KB

  • memory/4104-89-0x0000000007AC0000-0x0000000007ADA000-memory.dmp

    Filesize

    104KB

  • memory/4996-26-0x0000000000400000-0x000000000043C000-memory.dmp

    Filesize

    240KB

  • memory/4996-84-0x0000000005830000-0x0000000005848000-memory.dmp

    Filesize

    96KB

  • memory/4996-30-0x0000000074F10000-0x00000000756C0000-memory.dmp

    Filesize

    7.7MB

  • memory/4996-34-0x0000000005860000-0x0000000005870000-memory.dmp

    Filesize

    64KB

  • memory/4996-95-0x0000000006F20000-0x0000000006F70000-memory.dmp

    Filesize

    320KB

  • memory/4996-96-0x0000000005860000-0x0000000005870000-memory.dmp

    Filesize

    64KB

  • memory/4996-97-0x0000000074F10000-0x00000000756C0000-memory.dmp

    Filesize

    7.7MB

  • memory/4996-98-0x0000000005860000-0x0000000005870000-memory.dmp

    Filesize

    64KB