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Analysis

  • max time kernel
    150s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    07/04/2024, 00:05

General

  • Target

    a7903a792f681e00d5c41c11bcb041227a13f16f4f1f5fde1bdb1722c2f7085b.exe

  • Size

    177KB

  • MD5

    0bebcc64ad6ab3aed9b2a5b783db1b7a

  • SHA1

    2c4f870a2c89299b638668e868fc1ece233df2df

  • SHA256

    a7903a792f681e00d5c41c11bcb041227a13f16f4f1f5fde1bdb1722c2f7085b

  • SHA512

    6fb4dafe91444d348afe91eb360bd18abc745268974864ca8e99f4d64f7a5ed4eced40ec2462b9347092916ed914f0bc82a7462f436c3c0bc572d5669d82f17b

  • SSDEEP

    3072:ksYkcYIUQObxophkyWOVotM+lmsolAIrRuw+mqv9j1MWLQh:nVIabOLyG+lDAA

Malware Config

Extracted

Family

xworm

C2

uk2.localto.net:32941:443

Attributes
  • Install_directory

    %ProgramData%

  • install_file

    svchost.exe

Signatures

  • Detect Xworm Payload 2 IoCs
  • Xworm

    Xworm is a remote access trojan written in C#.

  • Detects Windows executables referencing non-Windows User-Agents 2 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Drops startup file 2 IoCs
  • Executes dropped EXE 2 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • 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 10 IoCs
  • Suspicious use of AdjustPrivilegeToken 8 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 10 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

Processes

  • C:\Users\Admin\AppData\Local\Temp\a7903a792f681e00d5c41c11bcb041227a13f16f4f1f5fde1bdb1722c2f7085b.exe
    "C:\Users\Admin\AppData\Local\Temp\a7903a792f681e00d5c41c11bcb041227a13f16f4f1f5fde1bdb1722c2f7085b.exe"
    1⤵
    • Checks computer location settings
    • Drops startup file
    • Adds Run key to start application
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1440
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\a7903a792f681e00d5c41c11bcb041227a13f16f4f1f5fde1bdb1722c2f7085b.exe'
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3564
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'a7903a792f681e00d5c41c11bcb041227a13f16f4f1f5fde1bdb1722c2f7085b.exe'
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4900
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\ProgramData\svchost.exe'
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3812
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'svchost.exe'
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4092
    • C:\Windows\System32\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "svchost" /tr "C:\ProgramData\svchost.exe"
      2⤵
      • Creates scheduled task(s)
      PID:4396
  • C:\ProgramData\svchost.exe
    C:\ProgramData\svchost.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:2924
  • C:\ProgramData\svchost.exe
    C:\ProgramData\svchost.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:4468

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\ProgramData\svchost.exe

    Filesize

    177KB

    MD5

    0bebcc64ad6ab3aed9b2a5b783db1b7a

    SHA1

    2c4f870a2c89299b638668e868fc1ece233df2df

    SHA256

    a7903a792f681e00d5c41c11bcb041227a13f16f4f1f5fde1bdb1722c2f7085b

    SHA512

    6fb4dafe91444d348afe91eb360bd18abc745268974864ca8e99f4d64f7a5ed4eced40ec2462b9347092916ed914f0bc82a7462f436c3c0bc572d5669d82f17b

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

    Filesize

    2KB

    MD5

    d85ba6ff808d9e5444a4b369f5bc2730

    SHA1

    31aa9d96590fff6981b315e0b391b575e4c0804a

    SHA256

    84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f

    SHA512

    8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

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

    Filesize

    654B

    MD5

    2ff39f6c7249774be85fd60a8f9a245e

    SHA1

    684ff36b31aedc1e587c8496c02722c6698c1c4e

    SHA256

    e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced

    SHA512

    1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

    Filesize

    944B

    MD5

    bd5940f08d0be56e65e5f2aaf47c538e

    SHA1

    d7e31b87866e5e383ab5499da64aba50f03e8443

    SHA256

    2d2f364c75bd2897504249f42cdf1d19374f5230aad68fa9154ea3d03e3031a6

    SHA512

    c34d10c7e07da44a180fae9889b61f08903aa84e8ddfa80c31c272b1ef9d491b8cec6b8a4c836c3cb1583fe8f4955c6a8db872515de3a9e10eae09610c959406

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

    Filesize

    944B

    MD5

    2fedf8712645087d38863175dedeb5c9

    SHA1

    0439c2d02f2453e74d4fd1ac30d15e177df300e2

    SHA256

    e611b8f3de57748f850afc50494c10cb0bbe26b1d8ec5cfcf43edd623937ff00

    SHA512

    678fde4ecd757ed2250225a5bd4c9d7597d4597bcc4e2875de252d912d2fb635eeef2b4b8ae57ce2f75e9f9148d19d787fdfaf12044c48f2c9535d1f03da4f92

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

    Filesize

    944B

    MD5

    5cfe303e798d1cc6c1dab341e7265c15

    SHA1

    cd2834e05191a24e28a100f3f8114d5a7708dc7c

    SHA256

    c4d16552769ca1762f6867bce85589c645ac3dc490b650083d74f853f898cfab

    SHA512

    ef151bbe0033a2caf2d40aff74855a3f42c8171e05a11c8ce93c7039d9430482c43fe93d9164ee94839aff253cad774dbf619dde9a8af38773ca66d59ac3400e

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_hamhopet.xpj.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • memory/1440-0-0x0000000000D40000-0x0000000000D72000-memory.dmp

    Filesize

    200KB

  • memory/1440-2-0x0000000002E70000-0x0000000002E80000-memory.dmp

    Filesize

    64KB

  • memory/1440-53-0x0000000002E70000-0x0000000002E80000-memory.dmp

    Filesize

    64KB

  • memory/1440-1-0x00007FFD5FF20000-0x00007FFD609E1000-memory.dmp

    Filesize

    10.8MB

  • memory/1440-48-0x00007FFD5FF20000-0x00007FFD609E1000-memory.dmp

    Filesize

    10.8MB

  • memory/2924-78-0x00007FFD5FF20000-0x00007FFD609E1000-memory.dmp

    Filesize

    10.8MB

  • memory/2924-81-0x00007FFD5FF20000-0x00007FFD609E1000-memory.dmp

    Filesize

    10.8MB

  • memory/3564-19-0x00007FFD5FF20000-0x00007FFD609E1000-memory.dmp

    Filesize

    10.8MB

  • memory/3564-16-0x000002703D650000-0x000002703D660000-memory.dmp

    Filesize

    64KB

  • memory/3564-3-0x00000270574D0000-0x00000270574F2000-memory.dmp

    Filesize

    136KB

  • memory/3564-4-0x00007FFD5FF20000-0x00007FFD609E1000-memory.dmp

    Filesize

    10.8MB

  • memory/3564-5-0x000002703D650000-0x000002703D660000-memory.dmp

    Filesize

    64KB

  • memory/3564-11-0x000002703D650000-0x000002703D660000-memory.dmp

    Filesize

    64KB

  • memory/3812-55-0x00007FFD5FF20000-0x00007FFD609E1000-memory.dmp

    Filesize

    10.8MB

  • memory/3812-51-0x0000015B1ED80000-0x0000015B1ED90000-memory.dmp

    Filesize

    64KB

  • memory/3812-50-0x0000015B1ED80000-0x0000015B1ED90000-memory.dmp

    Filesize

    64KB

  • memory/3812-52-0x0000015B1ED80000-0x0000015B1ED90000-memory.dmp

    Filesize

    64KB

  • memory/3812-49-0x00007FFD5FF20000-0x00007FFD609E1000-memory.dmp

    Filesize

    10.8MB

  • memory/4092-56-0x00007FFD5FF20000-0x00007FFD609E1000-memory.dmp

    Filesize

    10.8MB

  • memory/4092-58-0x00000208E78E0000-0x00000208E78F0000-memory.dmp

    Filesize

    64KB

  • memory/4092-57-0x00000208E78E0000-0x00000208E78F0000-memory.dmp

    Filesize

    64KB

  • memory/4092-69-0x00000208E78E0000-0x00000208E78F0000-memory.dmp

    Filesize

    64KB

  • memory/4092-71-0x00007FFD5FF20000-0x00007FFD609E1000-memory.dmp

    Filesize

    10.8MB

  • memory/4468-84-0x00007FFD5FF20000-0x00007FFD609E1000-memory.dmp

    Filesize

    10.8MB

  • memory/4468-85-0x00007FFD5FF20000-0x00007FFD609E1000-memory.dmp

    Filesize

    10.8MB

  • memory/4900-34-0x00000264B7D50000-0x00000264B7D60000-memory.dmp

    Filesize

    64KB

  • memory/4900-33-0x00000264B7D50000-0x00000264B7D60000-memory.dmp

    Filesize

    64KB

  • memory/4900-37-0x00007FFD5FF20000-0x00007FFD609E1000-memory.dmp

    Filesize

    10.8MB

  • memory/4900-35-0x00000264B7D50000-0x00000264B7D60000-memory.dmp

    Filesize

    64KB

  • memory/4900-31-0x00000264B7D50000-0x00000264B7D60000-memory.dmp

    Filesize

    64KB

  • memory/4900-30-0x00007FFD5FF20000-0x00007FFD609E1000-memory.dmp

    Filesize

    10.8MB