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Analysis

  • max time kernel
    117s
  • max time network
    121s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • submitted
    14/09/2024, 13:07

General

  • Target

    e31eaa04f39c59b97532303ae0cd41ddf8a24295bad8956d92b618b66bfecd1c.js

  • Size

    712KB

  • MD5

    ac220e1c5c5071a70f99a6a8200fe955

  • SHA1

    e5cf80d3df9fa75bbdb6b09a1dbe9c40258c0d3c

  • SHA256

    e31eaa04f39c59b97532303ae0cd41ddf8a24295bad8956d92b618b66bfecd1c

  • SHA512

    92a2fb2ba46c21e60a112dbff3d828caba9b2a3f6351c9c2352c8c025c4516e9c4003b98278dccf0cebffd8dca2ba5a788523189d1f084bdb5da5868c9fd501c

  • SSDEEP

    12288:rCLwKpVwxDdbSvKk5bDrD3PltUzvFhc2zs+jnkRuov7vjkji:+BpVeDdbSvP5bfD3P+NhM+jkRuUvoji

Malware Config

Extracted

Family

latrodectus

C2

https://isomicrotich.com/test/

https://rilomenifis.com/test/

Signatures

  • Detects Latrodectus 5 IoCs

    Detects Latrodectus v1.4.

  • Latrodectus family
  • Latrodectus loader

    Latrodectus is a loader written in C++.

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 15 IoCs
  • Blocklisted process makes network request 1 IoCs
  • Enumerates connected drives 3 TTPs 23 IoCs

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

  • Drops file in Windows directory 9 IoCs
  • Command and Scripting Interpreter: JavaScript 1 TTPs
  • 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.

  • Modifies data under HKEY_USERS 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 52 IoCs
  • Suspicious use of WriteProcessMemory 20 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:\Windows\system32\wscript.exe
    wscript.exe C:\Users\Admin\AppData\Local\Temp\e31eaa04f39c59b97532303ae0cd41ddf8a24295bad8956d92b618b66bfecd1c.js
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2184
  • C:\Windows\system32\msiexec.exe
    C:\Windows\system32\msiexec.exe /V
    1⤵
    • Blocklisted process makes network request
    • Enumerates connected drives
    • Drops file in Windows directory
    • Modifies data under HKEY_USERS
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2784
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding B1D0DE0324571C895C27B2A4DFB27653
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      PID:2708
    • C:\Windows\Installer\MSI1C3E.tmp
      "C:\Windows\Installer\MSI1C3E.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:2408
  • 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:1680
    • C:\Windows\System32\rundll32.exe
      rundll32.exe "C:\Users\Admin\AppData\Roaming\Custom_update\Update_7915632f.dll", NvPluginGetInfo
      2⤵
      • Loads dropped DLL
      PID:1804
  • C:\Windows\system32\taskeng.exe
    taskeng.exe {37E7ECDD-2BF3-45B3-89E1-D7E1BD6C1BCB} S-1-5-21-1488793075-819845221-1497111674-1000:UPNECVIU\Admin:Interactive:[1]
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:272
    • C:\Windows\system32\rundll32.exe
      rundll32.exe "C:\Users\Admin\AppData\Roaming\Custom_update\Update_7915632f.dll", NvPluginGetInfo
      2⤵
      • Loads dropped DLL
      PID:1488

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Config.Msi\f771af3.rbs

    Filesize

    1KB

    MD5

    b930f92faf3477320729f5ceb4fbeb82

    SHA1

    408b3fa36d7ef571d07447c3e9307c128f3afe25

    SHA256

    614c23cf86d234acb28420a1e5d67a6d8b16ae1588130f01e144521383833140

    SHA512

    76749b528aa0eb7fc754a955fc2c40062b5e0084caf1eec341862fb4bcae485a1e1bb2c70d685e9a8a96bb556276ac6ba4b7508b81edb4455e68008a18bf28d4

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

    Filesize

    1.8MB

    MD5

    6dc0d350d735fd1acc8219cfa5d02b9b

    SHA1

    7ba0708a4404715fb21a23acfbd88a25b7245ef1

    SHA256

    2333dd858fc40899a1bff3fb39fbc0b4e65a864bfd4eb73c26b48aaddcca7061

    SHA512

    99c9b6310363ce3a7d9ff680c4a0ae976553fc4789b12f9b60d9f629608d90cf4d64b4c8a037264f8aaa48fba69ae397236ef4c32c2eb6779fb5d9e0b3b0d52f

  • C:\Windows\Installer\MSI120A.tmp

    Filesize

    1.9MB

    MD5

    c017277279dada1b9653bc6838019952

    SHA1

    4d66580dade368ea823c2afc602ad3686c20d4d1

    SHA256

    f60c7e2cd7078584e1fb2eacd6270c314f1e23f76a4cd78c5d13eec215f0e41c

    SHA512

    cd9fea4bfa73987fb95e4e15ee6fa5c489842b79f8a497ea7dd65ec355db9df6d4af786612e6d9f43e7293723a91841465368728fb1b5361716a9297008adfa2

  • C:\Windows\Installer\MSI19C9.tmp

    Filesize

    436KB

    MD5

    475d20c0ea477a35660e3f67ecf0a1df

    SHA1

    67340739f51e1134ae8f0ffc5ae9dd710e8e3a08

    SHA256

    426e6cf199a8268e8a7763ec3a4dd7add982b28c51d89ebea90ca792cbae14dd

    SHA512

    99525aaab2ab608134b5d66b5313e7fc3c2e2877395c5c171897d7a6c66efb26b606de1a4cb01118c2738ea4b6542e4eb4983e631231b3f340bf85e509a9589e

  • C:\Windows\Installer\MSI1C3E.tmp

    Filesize

    389KB

    MD5

    b9545ed17695a32face8c3408a6a3553

    SHA1

    f6c31c9cd832ae2aebcd88e7b2fa6803ae93fc83

    SHA256

    1e0e63b446eecf6c9781c7d1cae1f46a3bb31654a70612f71f31538fb4f4729a

    SHA512

    f6d6dc40dcba5ff091452d7cc257427dcb7ce2a21816b4fec2ee249e63246b64667f5c4095220623533243103876433ef8c12c9b612c0e95fdfffe41d1504e04

  • memory/1680-46-0x00000000002D0000-0x00000000002E6000-memory.dmp

    Filesize

    88KB

  • memory/1680-45-0x00000000002D0000-0x00000000002E6000-memory.dmp

    Filesize

    88KB

  • memory/1804-55-0x0000000000340000-0x0000000000356000-memory.dmp

    Filesize

    88KB

  • memory/1804-54-0x0000000000340000-0x0000000000356000-memory.dmp

    Filesize

    88KB

  • memory/1804-53-0x0000000000340000-0x0000000000356000-memory.dmp

    Filesize

    88KB

  • memory/2408-39-0x0000000000260000-0x0000000000262000-memory.dmp

    Filesize

    8KB