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Analysis

  • max time kernel
    1200s
  • max time network
    1204s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    26/03/2024, 19:10

General

  • Target

    upd.msi

  • Size

    1.4MB

  • MD5

    a32536810939d2264c9030b8a1b12186

  • SHA1

    25b92fa53392d8541c2213769fac25b7ecbc88f1

  • SHA256

    d83d5378f1bb37d1423207ad67f2f984f2d46ba9534194c344a051117c1e541f

  • SHA512

    681c2c3299252ee34e447733e6fd6a00133ade44acac9a46cd2f188fd9f6ea767a183ffc0855e7effd39e1ac873405f2d22a7c44e3ce8e39441119d71841029e

  • SSDEEP

    24576:1hFxLNvYLSMvZCFlp8zBQSc0ZoCvqKwx0ECIgYmfLVYeBZr7AJ/MqYzXZ:1h1vYpW8zBQSc0ZnSKeZKumZr7Amqg

Score
10/10

Malware Config

Extracted

Family

latrodectus

C2

https://titnovacrion.top/live/

https://grunzalom.fun/live/

Signatures

  • Latrodectus loader

    Latrodectus is a loader written in C++.

  • Detect larodectus Loader variant 2 4 IoCs
  • Blocklisted process makes network request 64 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 10 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 10 IoCs
  • Checks SCSI registry key(s) 3 TTPs 5 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 12 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of WriteProcessMemory 13 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\upd.msi
    1⤵
    • Enumerates connected drives
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    PID:908
  • 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:4552
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 9AAB4C270C9A44CCD4932920468320C8 C
      2⤵
      • Loads dropped DLL
      PID:4312
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:3428
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 9E9F539FF20A012D42F13A106F15D713
        2⤵
        • Loads dropped DLL
        PID:3124
      • C:\Windows\Installer\MSIDF09.tmp
        "C:\Windows\Installer\MSIDF09.tmp" C:\Windows\System32\rundll32.exe C:\Users\Admin\AppData\Local\besr\cr2.dll, vgml
        2⤵
        • Executes dropped EXE
        • Suspicious behavior: EnumeratesProcesses
        PID:4820
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:3660
    • C:\Windows\System32\rundll32.exe
      "C:\Windows\System32\rundll32.exe" C:\Users\Admin\AppData\Local\besr\cr2.dll, vgml
      1⤵
      • Loads dropped DLL
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:4116
      • C:\Windows\System32\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Roaming\Custom_update\Update_7313c66e.dll", vgml
        2⤵
        • Blocklisted process makes network request
        • Loads dropped DLL
        • Suspicious behavior: EnumeratesProcesses
        PID:1536

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Config.Msi\e57dbea.rbs

      Filesize

      1KB

      MD5

      b6093023268cd3077bc80365d7f78e2e

      SHA1

      70b582454d5bf4138fc81feb37e2138b41028c8d

      SHA256

      d9b76f8955f902d16558806eb4adce3cb4802cb2a8ac0bfdfabb6874955afc3d

      SHA512

      106f1380b4c3406e21a9f5f8bec745b2a69077dfe7fa774411a1c863d540c32a9ec6481dca90a30406656d4ccb0a1798635e2e6f6403d03e62fafa3331e4a008

    • C:\Users\Admin\AppData\Local\Temp\MSI6E69.tmp

      Filesize

      436KB

      MD5

      475d20c0ea477a35660e3f67ecf0a1df

      SHA1

      67340739f51e1134ae8f0ffc5ae9dd710e8e3a08

      SHA256

      426e6cf199a8268e8a7763ec3a4dd7add982b28c51d89ebea90ca792cbae14dd

      SHA512

      99525aaab2ab608134b5d66b5313e7fc3c2e2877395c5c171897d7a6c66efb26b606de1a4cb01118c2738ea4b6542e4eb4983e631231b3f340bf85e509a9589e

    • C:\Users\Admin\AppData\Local\besr\cr2.dll

      Filesize

      277KB

      MD5

      f9425561701935d358f4f5b7fc2e5502

      SHA1

      f00b5a6bbd7f500c439bfa4e4dedc79850732597

      SHA256

      71fb25cc4c05ce9dd94614ed781d85a50dccf69042521abc6782d48df85e6de9

      SHA512

      8faa2b11ca95eed4b7d5aa7dcc36669d929e7d2c503714d7d220c660e9dad8aa92697f57080fa7589875fe36e3fa9b507e96970d9647373c82969c7972774bcb

    • C:\Users\Admin\AppData\Roaming\Custom_update\Update_7313c66e.dll

      Filesize

      209KB

      MD5

      0496fa31807a9ef6297550fe84568fe8

      SHA1

      aa8d1d8a086541c41a5d2452ba7baa8032eca6b6

      SHA256

      7c5f7ba29e2d6bfcf148a338b9a1e87edf2151d4fe18e97fdc2fd227f42134f6

      SHA512

      2528ed73b2621229cab1f94275e50893fc88d275e4525450e3e1d81caf6707b7c81956fde326776874679da9d3731aa7008db47fcf4bd2691d22d63b0683db86

    • C:\Windows\Installer\MSIDF09.tmp

      Filesize

      389KB

      MD5

      b9545ed17695a32face8c3408a6a3553

      SHA1

      f6c31c9cd832ae2aebcd88e7b2fa6803ae93fc83

      SHA256

      1e0e63b446eecf6c9781c7d1cae1f46a3bb31654a70612f71f31538fb4f4729a

      SHA512

      f6d6dc40dcba5ff091452d7cc257427dcb7ce2a21816b4fec2ee249e63246b64667f5c4095220623533243103876433ef8c12c9b612c0e95fdfffe41d1504e04

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

      Filesize

      23.7MB

      MD5

      3f97600b3720452c2da74efb7d484ca7

      SHA1

      082fe83089f633da6294e5d98b582a8c82ef01ef

      SHA256

      e005c44a358875c25e1a50ccda41a953ea020439aa6ffb55c499d396d64a84e4

      SHA512

      b0f05111321b303b8fbd8a4999779a7b7424dee4886e347e719cb6207ac9c47c63bf8d331df6222be98765349b3eecca76d49ea932fcc02bb3f7305633886870

    • \??\Volume{e992337d-0000-0000-0000-d01200000000}\System Volume Information\SPP\OnlineMetadataCache\{753ac803-3bbb-481f-ad72-f9eabe9a1e5d}_OnDiskSnapshotProp

      Filesize

      6KB

      MD5

      a4e9b5dfcb225837a057cf6c855fde79

      SHA1

      70f67e9dabfa0dbc309bb1bf34066f5a52023953

      SHA256

      c1220ef3f512d783591a9dead32ea0e7bf432310eb0b014ad7d84632a7917aa2

      SHA512

      b543e4b42aeeab3c2a4a9c155c29dae92160c26df1c480b179b958a50a97f3d74c6417687a83969304cbc74c3205fc738d974934b015f6223af1a37e8180a8ad

    • memory/1536-65-0x00000165560F0000-0x0000016556104000-memory.dmp

      Filesize

      80KB

    • memory/1536-66-0x00000165560F0000-0x0000016556104000-memory.dmp

      Filesize

      80KB

    • memory/4116-47-0x0000010D14120000-0x0000010D14152000-memory.dmp

      Filesize

      200KB

    • memory/4116-53-0x0000010D14160000-0x0000010D14174000-memory.dmp

      Filesize

      80KB

    • memory/4116-50-0x00007FF86EE70000-0x00007FF86EEBC000-memory.dmp

      Filesize

      304KB

    • memory/4116-48-0x0000010D14160000-0x0000010D14174000-memory.dmp

      Filesize

      80KB