Analysis

  • max time kernel
    774s
  • max time network
    1158s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • submitted
    13-09-2024 11:18

General

  • Target

    vfs.msi

  • Size

    1.9MB

  • MD5

    c017277279dada1b9653bc6838019952

  • SHA1

    4d66580dade368ea823c2afc602ad3686c20d4d1

  • SHA256

    f60c7e2cd7078584e1fb2eacd6270c314f1e23f76a4cd78c5d13eec215f0e41c

  • SHA512

    cd9fea4bfa73987fb95e4e15ee6fa5c489842b79f8a497ea7dd65ec355db9df6d4af786612e6d9f43e7293723a91841465368728fb1b5361716a9297008adfa2

  • SSDEEP

    49152:QGN3YhW8zBQSc0ZnSKBZKumZr7ANpTdzZfVSlaMBOno:3YY0Zn3K/ANPzbSlaBno

Malware Config

Extracted

Family

latrodectus

C2

https://isomicrotich.com/test/

https://rilomenifis.com/test/

Signatures

  • Detects Latrodectus 4 IoCs

    Detects Latrodectus v1.4.

  • Latrodectus family
  • Latrodectus loader

    Latrodectus is a loader written in C++.

  • Blocklisted process makes network request 4 IoCs
  • Enumerates connected drives 3 TTPs 46 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Drops file in Windows directory 12 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 6 IoCs
  • Event Triggered Execution: Installer Packages 2 TTPs 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Checks SCSI registry key(s) 3 TTPs 5 IoCs

    SCSI information is often read in order to detect sandboxing environments.

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 63 IoCs
  • Suspicious use of FindShellTrayWindow 2 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.

  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

Processes

  • C:\Windows\system32\msiexec.exe
    msiexec.exe /I C:\Users\Admin\AppData\Local\Temp\vfs.msi
    1⤵
    • Enumerates connected drives
    • Event Triggered Execution: Installer Packages
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    PID:3428
  • C:\Windows\system32\msiexec.exe
    C:\Windows\system32\msiexec.exe /V
    1⤵
    • Enumerates connected drives
    • Drops file in Windows directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4944
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:3160
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 25FBE7EE21EEC2F219617C51865FB42A
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      PID:3396
    • C:\Windows\Installer\MSIAA10.tmp
      "C:\Windows\Installer\MSIAA10.tmp" /DontWait C:/Windows/System32/rundll32.exe C:\Users\Admin\AppData\Roaming\true.dll, NvPluginGetInfo
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:4320
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Checks SCSI registry key(s)
    • Suspicious use of AdjustPrivilegeToken
    PID:1268
  • C:\Windows\System32\rundll32.exe
    "C:\Windows\System32\rundll32.exe" C:\Users\Admin\AppData\Roaming\true.dll, NvPluginGetInfo
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:4240
    • C:\Windows\System32\rundll32.exe
      rundll32.exe "C:\Users\Admin\AppData\Roaming\Custom_update\Update_893835d6.dll", NvPluginGetInfo
      2⤵
      • Blocklisted process makes network request
      • Loads dropped DLL
      PID:2440

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Config.Msi\e57a684.rbs

    Filesize

    1KB

    MD5

    bd7ebfa5c2e74ae1f056596685926789

    SHA1

    93937bb94a8141f108832b448a2233257e8a69c5

    SHA256

    3ef224d21559a38b665e52c5489d76aed6b74b9fa53a0de0d096a54c57c60a1a

    SHA512

    72d7cbbd03bb6f1292c3dc8385f3d4fb4be3dee680c459de79fc6bea1a4c3e850b497ad00932a8e4ef7bc7c93324dc645dba0c1cf785bccd439b496b5550abcf

  • C:\Users\Admin\AppData\Roaming\true.dll

    Filesize

    1.8MB

    MD5

    6dc0d350d735fd1acc8219cfa5d02b9b

    SHA1

    7ba0708a4404715fb21a23acfbd88a25b7245ef1

    SHA256

    2333dd858fc40899a1bff3fb39fbc0b4e65a864bfd4eb73c26b48aaddcca7061

    SHA512

    99c9b6310363ce3a7d9ff680c4a0ae976553fc4789b12f9b60d9f629608d90cf4d64b4c8a037264f8aaa48fba69ae397236ef4c32c2eb6779fb5d9e0b3b0d52f

  • C:\Windows\Installer\MSIA6B0.tmp

    Filesize

    436KB

    MD5

    475d20c0ea477a35660e3f67ecf0a1df

    SHA1

    67340739f51e1134ae8f0ffc5ae9dd710e8e3a08

    SHA256

    426e6cf199a8268e8a7763ec3a4dd7add982b28c51d89ebea90ca792cbae14dd

    SHA512

    99525aaab2ab608134b5d66b5313e7fc3c2e2877395c5c171897d7a6c66efb26b606de1a4cb01118c2738ea4b6542e4eb4983e631231b3f340bf85e509a9589e

  • C:\Windows\Installer\MSIAA10.tmp

    Filesize

    389KB

    MD5

    b9545ed17695a32face8c3408a6a3553

    SHA1

    f6c31c9cd832ae2aebcd88e7b2fa6803ae93fc83

    SHA256

    1e0e63b446eecf6c9781c7d1cae1f46a3bb31654a70612f71f31538fb4f4729a

    SHA512

    f6d6dc40dcba5ff091452d7cc257427dcb7ce2a21816b4fec2ee249e63246b64667f5c4095220623533243103876433ef8c12c9b612c0e95fdfffe41d1504e04

  • \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2

    Filesize

    23.7MB

    MD5

    9ec9fb6fa1c8d721e1387bdeb1785089

    SHA1

    60f5a91861516a73a2440437ca3b532261f842f4

    SHA256

    23c6f3dba504e9d7a6848b0a569d6e96a61533f7fd7e66e801b5026fa587b928

    SHA512

    d7080ac96e1bbfdda5d6c9d4c3c164f5fc0ad8fe6d7c5435bc312f8561bc41ede7815f811e73d8a5a8efb3fdb2dd3055088415236111dadf29ccf780838c1d23

  • \??\Volume{f171a6e7-0000-0000-0000-d01200000000}\System Volume Information\SPP\OnlineMetadataCache\{5625dcc3-6b93-48b7-ba0d-f5061cbca075}_OnDiskSnapshotProp

    Filesize

    6KB

    MD5

    9872f3779cb43e7a5cbef4ce2ebefc13

    SHA1

    719cdd6514dad567d4f500ca5999b8ba0e7d8b67

    SHA256

    b87a0f4db9ff2a4e045ad87719a0718128af71ec922b076a87223412bfd00566

    SHA512

    b561357b9ef80d0ca8f57ff8cd6b2775fba98ed02e325673e754ebeb9478891e9b967e6d10f5f34337cf4efac8efd9526bbd2d9123068aadf32733e21d151d13

  • memory/2440-51-0x000002AC272D0000-0x000002AC272E6000-memory.dmp

    Filesize

    88KB

  • memory/2440-50-0x000002AC272D0000-0x000002AC272E6000-memory.dmp

    Filesize

    88KB

  • memory/4240-44-0x0000023D3AC60000-0x0000023D3AC76000-memory.dmp

    Filesize

    88KB

  • memory/4240-45-0x0000023D3AC60000-0x0000023D3AC76000-memory.dmp

    Filesize

    88KB

  • memory/4240-48-0x0000000180000000-0x00000001801DC000-memory.dmp

    Filesize

    1.9MB