Analysis

  • max time kernel
    145s
  • max time network
    119s
  • platform
    windows7_x64
  • resource
    win7-20240611-en
  • resource tags

    arch:x64arch:x86image:win7-20240611-enlocale:en-usos:windows7-x64system
  • submitted
    14-06-2024 15:44

General

  • Target

    aa7f29c0cc4177e3fc288923705caa2d_JaffaCakes118.exe

  • Size

    991KB

  • MD5

    aa7f29c0cc4177e3fc288923705caa2d

  • SHA1

    61c693c789e9e4f6ffbbad5d1c1f26249f67331b

  • SHA256

    2ba09d754a14da8ff1a1c8d3b95f30c07b312451c941765e90ed910e150142c2

  • SHA512

    3fe9495c714f0a2b3c1e409e96fe09fab6328f52570e9152314ce8817224e2f35d9de417f290585c2b75f5417ffd5bea10f5531fbc5e6c64e3cf7d9a660beb16

  • SSDEEP

    24576:KEtl9mRda1lSySGB2uJ2s4otqFCJrW9FqvSbqsHasgXhFHDAGtlRXZ+CP63n0NuP:BEs14nNV

Score
10/10

Malware Config

Signatures

  • Modifies WinLogon for persistence 2 TTPs 2 IoCs
  • Renames multiple (91) files with added filename extension

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

  • Drops startup file 3 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 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 autorun.inf file 1 TTPs 3 IoCs

    Malware can abuse Windows Autorun to spread further via attached volumes.

  • Drops file in System32 directory 4 IoCs
  • Drops file in Program Files directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\aa7f29c0cc4177e3fc288923705caa2d_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\aa7f29c0cc4177e3fc288923705caa2d_JaffaCakes118.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Drops startup file
    • Loads dropped DLL
    • Enumerates connected drives
    • Drops autorun.inf file
    • Drops file in System32 directory
    • Suspicious use of WriteProcessMemory
    PID:2996
    • C:\Windows\SysWOW64\HelpMe.exe
      C:\Windows\system32\HelpMe.exe
      2⤵
      • Modifies WinLogon for persistence
      • Drops startup file
      • Executes dropped EXE
      • Enumerates connected drives
      • Drops autorun.inf file
      • Drops file in System32 directory
      • Drops file in Program Files directory
      • Suspicious behavior: EnumeratesProcesses
      PID:3008

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\$Recycle.Bin\S-1-5-21-2812790648-3157963462-487717889-1000\desktop.ini.exe

    Filesize

    992KB

    MD5

    bd859de5efc9bb210e9136a0770fef3c

    SHA1

    fa6c6cd3f4c5ad51e2b07e36dd3325184e706b5b

    SHA256

    7b00867f1fa36c53ec8137f3a0e668a162b2458226a69105c6d4b50d1ea47966

    SHA512

    ead4d2054b9e1478a21fd7e67611d0916e5787b4ef165e922e204c4e5793b7a715aa438941ca266aea6b84c686630424c44b5291f935dd654d2305ec14106132

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Soft.lnk

    Filesize

    1KB

    MD5

    2d226461ada2bece605a9c131605e953

    SHA1

    41c2124a5b5343b26ce13713b0b2a61586915a01

    SHA256

    1f5e67dd4461cf60c831735d3e254063dff2f173b88c16e86f71f5a6488380b2

    SHA512

    4b5890673a52e2fd5c1fa22d9db2b6d57e1f46dbca29cb5e371e499a34966ed1315454c189da39bb0ee2a01aadd500d3421d5ee32b642910ff06d4b8aa9b74c0

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Soft.lnk

    Filesize

    950B

    MD5

    5992957d3d1d4446dcb95d5ecc7dd617

    SHA1

    5241e6d64869c3e89094bac3cb44cbab7728bb9e

    SHA256

    c84c2b9d378a1d0ddd6e45ea9822b9c6918811136aa846ff7746066c737b4598

    SHA512

    ad41669d621e1c7c752167189270779a530c9c16d52d39a3107185113e89ae724a17aacae408d97c0a56803e711333f66957708df4a8f97149d5b45b4c798c29

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Soft.lnk

    MD5

    d41d8cd98f00b204e9800998ecf8427e

    SHA1

    da39a3ee5e6b4b0d3255bfef95601890afd80709

    SHA256

    e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

    SHA512

    cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

  • F:\AUTORUN.INF

    Filesize

    145B

    MD5

    ca13857b2fd3895a39f09d9dde3cca97

    SHA1

    8b78c5b2ec97c372ebdcef92d14b0998f8dd6dd0

    SHA256

    cfe448b4506a95b33b529efa88f1ac704d8bdf98a941c065650ead27609318ae

    SHA512

    55e5b5325968d1e5314527fb2d26012f5aae4a1c38e305417be273400cb1c6d0c22b85bddb501d7a5720a3f53bb5caf6ada8a7894232344c4f6c6ef85d226b47

  • F:\AutoRun.exe

    Filesize

    991KB

    MD5

    aa7f29c0cc4177e3fc288923705caa2d

    SHA1

    61c693c789e9e4f6ffbbad5d1c1f26249f67331b

    SHA256

    2ba09d754a14da8ff1a1c8d3b95f30c07b312451c941765e90ed910e150142c2

    SHA512

    3fe9495c714f0a2b3c1e409e96fe09fab6328f52570e9152314ce8817224e2f35d9de417f290585c2b75f5417ffd5bea10f5531fbc5e6c64e3cf7d9a660beb16

  • \Windows\SysWOW64\HelpMe.exe

    Filesize

    991KB

    MD5

    d7d92855e2ec350e1130af6fb76e5554

    SHA1

    68728ffdf264158b78d57f4101e2e6f0ff988289

    SHA256

    56df39c4fc3809a0401d3c3e75466a5a08b71ba678df7ff05e8b53495d0886d1

    SHA512

    9f950fe4f860bb08a625b8394fc77f4658e83696432c99bba0878b8d9b188bfee3d1ed199418f219337e66b512b0b6d282352dcdf68e9a557c0a29f24e756afd

  • memory/2996-4-0x0000000001EF0000-0x0000000001F68000-memory.dmp

    Filesize

    480KB

  • memory/2996-2-0x0000000000220000-0x0000000000221000-memory.dmp

    Filesize

    4KB

  • memory/2996-0-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/2996-234-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/2996-243-0x0000000001EF0000-0x0000000001F68000-memory.dmp

    Filesize

    480KB

  • memory/3008-11-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/3008-244-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB