Resubmissions

02-04-2024 20:58

240402-zr8lvadd93 10

01-04-2024 22:38

240401-2ksyxshf68 10

01-04-2024 22:32

240401-2f8tksha31 10

Analysis

  • max time kernel
    120s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    01-04-2024 22:32

General

  • Target

    lib.msi

  • Size

    1.5MB

  • MD5

    e1692df23c8753b5744c77570aca2f2e

  • SHA1

    71a71557601602427c80021acb978cccb78e1536

  • SHA256

    0f0757d1baa3bd0341d282bb0afcdbdb522676db05814a3c3051c08829151b52

  • SHA512

    4ce5eba6204ff771fa65e102529580c67076aa7906d38f240c3caf49e4ba35633384015db2ac63c4b29f340152bc6720fcec4d7e42dfdab8c21c4c6659ee5504

  • SSDEEP

    24576:SwRxLNvYLSMvZCFlp8zBQSc0ZoCvqKwx0ECIgYmfLVYeBZr7AuSqTicJ2I0x:SwxvYpW8zBQSc0ZnSKeZKumZr7AjqAI0

Score
10/10

Malware Config

Extracted

Family

latrodectus

C2

https://titnovacrion.top/live/

https://skinnyjeanso.com/live/

Signatures

  • Latrodectus loader

    Latrodectus is a loader written in C++.

  • Detect larodectus Loader variant 2 2 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 11 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 10 IoCs
  • Modifies data under HKEY_USERS 43 IoCs
  • Suspicious behavior: EnumeratesProcesses 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs
  • 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\lib.msi
    1⤵
    • Enumerates connected drives
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    PID:1968
  • 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:2120
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding ADAADC2459A376DC812756FC515EAEC9 C
      2⤵
      • Loads dropped DLL
      PID:2556
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding B01B0E15B174A5A72481C7BAF1103215
      2⤵
      • Loads dropped DLL
      PID:2144
    • C:\Windows\Installer\MSI39B9.tmp
      "C:\Windows\Installer\MSI39B9.tmp" C:\Windows\System32\rundll32.exe C:\Users\Admin\AppData\Local\libroffice\rsa.dll, home
      2⤵
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      PID:868
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
      PID:2752
    • C:\Windows\system32\DrvInst.exe
      DrvInst.exe "1" "200" "STORAGE\VolumeSnapshot\HarddiskVolumeSnapshot19" "" "" "61530dda3" "0000000000000000" "00000000000003E0" "0000000000000598"
      1⤵
      • Drops file in Windows directory
      • Modifies data under HKEY_USERS
      PID:2716
    • C:\Windows\System32\rundll32.exe
      "C:\Windows\System32\rundll32.exe" C:\Users\Admin\AppData\Local\libroffice\rsa.dll, home
      1⤵
      • Loads dropped DLL
      • Suspicious behavior: EnumeratesProcesses
      PID:2656

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Config.Msi\f763813.rbs

      Filesize

      1KB

      MD5

      63ec40d5a8da7a00459f3de9a606be19

      SHA1

      6b22bf61b2cc6ff0262eac1b8a5d140f0ca7112f

      SHA256

      c8e4aedfea3e34bf994520f17a2a9b5447e71b195efb9593f019b79e787559af

      SHA512

      1bcc58292931c3e03ea782bacfd6a0fb309a1b3f778132ebb6098034e7929e240eee0a3e768d7d4f14b893d8131a43d4d011f0a7da34247ccf71547be320ab17

    • C:\Users\Admin\AppData\Local\libroffice\rsa.dll

      Filesize

      740KB

      MD5

      3925637dae8797721f30976e688b84d8

      SHA1

      e260fc3f8646b605cf05684afca681dc74061efa

      SHA256

      17ddc339b14845bc9d67c5c3cd9a0e617387cc0569131ff3641035d82043effa

      SHA512

      7ae16443b752c88a7e9231120cc337bf4c7d05b67daa572771d0daed49e4ee7efec3ec4a64faf8799f69d01b6928d82d9d284d8ccc1410595dafd531fd17e880

    • C:\Windows\Installer\MSI39B9.tmp

      Filesize

      389KB

      MD5

      b9545ed17695a32face8c3408a6a3553

      SHA1

      f6c31c9cd832ae2aebcd88e7b2fa6803ae93fc83

      SHA256

      1e0e63b446eecf6c9781c7d1cae1f46a3bb31654a70612f71f31538fb4f4729a

      SHA512

      f6d6dc40dcba5ff091452d7cc257427dcb7ce2a21816b4fec2ee249e63246b64667f5c4095220623533243103876433ef8c12c9b612c0e95fdfffe41d1504e04

    • \Users\Admin\AppData\Local\Temp\MSI212B.tmp

      Filesize

      436KB

      MD5

      475d20c0ea477a35660e3f67ecf0a1df

      SHA1

      67340739f51e1134ae8f0ffc5ae9dd710e8e3a08

      SHA256

      426e6cf199a8268e8a7763ec3a4dd7add982b28c51d89ebea90ca792cbae14dd

      SHA512

      99525aaab2ab608134b5d66b5313e7fc3c2e2877395c5c171897d7a6c66efb26b606de1a4cb01118c2738ea4b6542e4eb4983e631231b3f340bf85e509a9589e

    • memory/868-37-0x00000000001B0000-0x00000000001B2000-memory.dmp

      Filesize

      8KB

    • memory/2656-42-0x0000000180000000-0x00000001800BF000-memory.dmp

      Filesize

      764KB

    • memory/2656-44-0x0000000180000000-0x00000001800BF000-memory.dmp

      Filesize

      764KB

    • memory/2656-46-0x00000000002C0000-0x00000000002D4000-memory.dmp

      Filesize

      80KB

    • memory/2656-45-0x00000000002E0000-0x00000000002F4000-memory.dmp

      Filesize

      80KB

    • memory/2656-50-0x0000000180000000-0x00000001800BF000-memory.dmp

      Filesize

      764KB