Analysis

  • max time kernel
    142s
  • 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
    30/04/2024, 01:50

General

  • Target
    bb9203ca1305e47a2ec1443a640efcd5e2c7d11223184639729673579e12967e.js
  • Size 533KB
  • Sample240430-b9rjaagh63
  • SHA256 bb9203ca1305e47a2ec1443a640efcd5e2c7d11223184639729673579e12967e
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10

Malware Config

Extracted

Family
  • latrodectus

C2
  • https://jarinamaers.shop/live/

  • https://startmast.shop/live/

Signatures

  • Latrodectus loader

    Latrodectus is a loader written in C++.

  • Detect larodectus Loader variant 2 1 IoCs
  • Blocklisted process makes network request 4 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 6 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 10 IoCs
  • Modifies system certificate store 2 TTPs 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 12 IoCs
  • Suspicious use of AdjustPrivilegeToken 50 IoCs
  • Suspicious use of WriteProcessMemory 8 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\bb9203ca1305e47a2ec1443a640efcd5e2c7d11223184639729673579e12967e.js
    1⤵
    • Blocklisted process makes network request
    • Modifies system certificate store
    • Suspicious use of AdjustPrivilegeToken
    PID:1600
  • 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
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2124
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding EBE5B9566EE18588B229234C12ACE07E
      2⤵
      • Loads dropped DLL
      PID:3456
    • C:\Windows\Installer\MSI3A5B.tmp
      "C:\Windows\Installer\MSI3A5B.tmp" C:/Windows/System32/rundll32.exe C:\Users\Admin\AppData\Local\glosar\beta.dll, homq
      2⤵
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      PID:4548
  • C:\Windows\System32\rundll32.exe
    "C:\Windows\System32\rundll32.exe" C:\Users\Admin\AppData\Local\glosar\beta.dll, homq
    1⤵
    • Loads dropped DLL
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:2844
    • C:\Windows\System32\rundll32.exe
      rundll32.exe "C:\Users\Admin\AppData\Roaming\Custom_update\Update_b2fa2eb7.dll", homq
      2⤵
      • Loads dropped DLL
      • Suspicious behavior: EnumeratesProcesses
      PID:5108
  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=3780 --field-trial-handle=2284,i,15722001240173834669,15048020084704567542,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:1424

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

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          Downloads

          e58365f.rbs

          • Path C:\Config.Msi\e58365f.rbs
          • Size 1KB
          • SHA256 116f656bba57c2772f55444316a29efc2518e5ea64e49b0739989f5b76e1575f
          • MD5 SHA1 SHA512

          beta.dll

          • Path C:\Users\Admin\AppData\Local\glosar\beta.dll
          • Size 364KB
          • SHA256 53e65d071870f127bc6bf6c8e8ddfd131558153513976744ee7460eeb766d081
          • MD5 SHA1 SHA512 SSDEEP

          MSI146E.tmp

          • Path C:\Windows\Installer\MSI146E.tmp
          • Size 436KB
          • SHA256 426e6cf199a8268e8a7763ec3a4dd7add982b28c51d89ebea90ca792cbae14dd
          • MD5 SHA1 SHA512 SSDEEP

          MSI3A5B.tmp

          • Path C:\Windows\Installer\MSI3A5B.tmp
          • Size 389KB
          • SHA256 1e0e63b446eecf6c9781c7d1cae1f46a3bb31654a70612f71f31538fb4f4729a
          • MD5 SHA1 SHA512 SSDEEP

          MSIFB19.tmp

          • Path C:\Windows\Installer\MSIFB19.tmp
          • Size 1.3MB
          • SHA256 a9fa025fe912c8ad5e6566c675e045732c4d89f4187bfd94c4e916dd9fe25417
          • MD5 SHA1 SHA512 SSDEEP

          memory/2844-47-0x0000000180000000-0x0000000180066000-memory.dmp

          memory/5108-50-0x0000017AD8BE0000-0x0000017AD8BF4000-memory.dmp