Analysis

  • max time kernel
    117s
  • max time network
    121s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    01-05-2024 09:10

General

  • Target

    Chrome.msi

  • Size

    288KB

  • MD5

    10cca9ff7368ddfb2301d36fa386669a

  • SHA1

    9ec12af4a97eda16513aa51ec685601c64eec626

  • SHA256

    ba9933fa2ea29f27d73736ecd78d3f598e4786f2207e29fa6c7f42f008d529a9

  • SHA512

    c72938d43e08de87c0328a500810e0c33448110eefb3eaf9569dbb9b91e61e9db4022ca6359e84e2a9b376077d5242948ecdbd2fb433b508a4006463d56d1c85

  • SSDEEP

    3072:81L7cspAtO9mXwCGjtYNKbYO2gjpcm8rRuqpjCL42loHUvU0yGxr5GqM2a8VlhD5:btO9iRQYpgjpjew5DHyGxcqo8f7

Malware Config

Signatures

  • Detect MafiaWare666 ransomware 3 IoCs
  • MafiaWare666 Ransomware

    MafiaWare666 is ransomware written in C# with multiple variants.

  • Renames multiple (62) files with added filename extension

    This suggests ransomware activity of encrypting all the files on the system.

  • Modifies file permissions 1 TTPs 1 IoCs
  • Drops desktop.ini file(s) 3 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 5 IoCs
  • Modifies data under HKEY_USERS 43 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 53 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of WriteProcessMemory 19 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\Chrome.msi
    1⤵
    • Enumerates connected drives
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    PID:1548
  • 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:3012
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 86FC3CD7B67D1844A3A2AA264FA78571
      2⤵
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:1728
      • C:\Windows\SysWOW64\ICACLS.EXE
        "C:\Windows\system32\ICACLS.EXE" "C:\Users\Admin\AppData\Local\Temp\MW-5874a088-c9ff-4e77-905b-9caa40d2ccf2\." /SETINTEGRITYLEVEL (CI)(OI)HIGH
        3⤵
        • Modifies file permissions
        PID:1824
      • C:\Windows\SysWOW64\EXPAND.EXE
        "C:\Windows\system32\EXPAND.EXE" -R files.cab -F:* files
        3⤵
        • Drops file in Windows directory
        PID:1600
      • C:\Users\Admin\AppData\Local\Temp\MW-5874a088-c9ff-4e77-905b-9caa40d2ccf2\files\WindowsFormsApp1_original.exe
        "C:\Users\Admin\AppData\Local\Temp\MW-5874a088-c9ff-4e77-905b-9caa40d2ccf2\files\WindowsFormsApp1_original.exe"
        3⤵
        • Drops desktop.ini file(s)
        • Executes dropped EXE
        PID:2156
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2708
  • C:\Windows\system32\DrvInst.exe
    DrvInst.exe "1" "200" "STORAGE\VolumeSnapshot\HarddiskVolumeSnapshot19" "" "" "61530dda3" "0000000000000000" "00000000000005C0" "00000000000003DC"
    1⤵
    • Drops file in Windows directory
    • Modifies data under HKEY_USERS
    • Suspicious use of AdjustPrivilegeToken
    PID:2484

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\MW-5874a088-c9ff-4e77-905b-9caa40d2ccf2\files.cab

    Filesize

    37KB

    MD5

    b050ee720b47e099ebeb9fb585ddcd80

    SHA1

    710b83b1c892872623581cc629a22f7f58672651

    SHA256

    040c3c2ec3e91c3f6d6b7b895017f08ece1998d0fcae1d40d75312fdf3dae5fc

    SHA512

    86209153e7be31e5dd638f79dbef639fd8c5642d56b01bc9f8a4370553cf71fcedc82141072739625a7cf397096f0e8cacc774a92796d13ca81b83ed5a89a32e

  • C:\Users\Admin\AppData\Local\Temp\MW-5874a088-c9ff-4e77-905b-9caa40d2ccf2\files\WindowsFormsApp1_original.exe

    Filesize

    37KB

    MD5

    fcb4ddf79552dbc16151c4f002e72a81

    SHA1

    5a6655bf73e42c6e0eb35b58aba5bba91745fb49

    SHA256

    1e16152df45f8830bc7f5682342fd632dd724cccfd752f9fd1be4cd2c2606179

    SHA512

    2ef11bf7e3539d812e54a2b6ccd5901fa60e1c873ac19e71e0b1d305090a742f492e2d4ed836b3897f8795335b9181bceb555e2a5c143cff59843ef921e1a4d3

  • C:\Users\Admin\AppData\Local\Temp\MW-5874a088-c9ff-4e77-905b-9caa40d2ccf2\msiwrapper.ini

    Filesize

    436B

    MD5

    12fb94f1c3d8f78f6848586b4e5441c5

    SHA1

    9c8ba815160d3ff27f32e6974ed94911a53da301

    SHA256

    541cefed4d7161f0d406f6c49c95b5ea702151f50ad8d580423f03075f61f8a1

    SHA512

    2b47de8a690aced9f60010805cc37d2facca729e95c22d470f1aae2440ec08f3934099fc6b03cafc8e38866d89eff2fc2e8a548b4e943c16004b28add8985020

  • C:\Users\Admin\AppData\Local\Temp\MW-5874a088-c9ff-4e77-905b-9caa40d2ccf2\msiwrapper.ini

    Filesize

    1KB

    MD5

    62a5ed1ad71fec5b05d1398a87355f84

    SHA1

    0c6ab7ef1e31b409bc55554ef426431daff6ba94

    SHA256

    3a52fd1669dde4a20a0fe3c016b2d166e9ed79cd1db814e246c7818e8b78cc91

    SHA512

    b93fba81084f06c255b3a44b592827d1efae996d6e777da2b0194f7f06bf086672ac5d628b59c3d0cf4cef654d4d56b14388052166d826495628dd42f64924f7

  • \Windows\Installer\MSID3C3.tmp

    Filesize

    208KB

    MD5

    0c8921bbcc37c6efd34faf44cf3b0cb5

    SHA1

    dcfa71246157edcd09eecaf9d4c5e360b24b3e49

    SHA256

    fd622cf73ea951a6de631063aba856487d77745dd1500adca61902b8dde56fe1

    SHA512

    ed55443e20d40cca90596f0a0542fa5ab83fe0270399adfaafd172987fb813dfd44ec0da0a58c096af3641003f830341fe259ad5bce9823f238ae63b7e11e108

  • memory/2156-71-0x0000000000820000-0x000000000082E000-memory.dmp

    Filesize

    56KB