Analysis

  • max time kernel
    150s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240412-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
  • submitted
    19/04/2024, 22:26

General

  • Target
    fb4d683e3ae0f7d5e33df5bf301daa58_JaffaCakes118.exe
  • Size 6.9MB
  • Sample240419-2cxbdaaa4t
  • SHA256 d684eb2255665b6953a3ce3f23721d4130987ffa61ad69482fd706392ab9bf3e
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • 44caliber

C2
  • https://discord.com/api/webhooks/854449200544481340/h9Qp-FHl7aROvxHN_j_GBe2W_7GEv-jYyr5ljRUrqO18MRY3RYt72njct-cF-n2sdbCe

Signatures

  • 44Caliber

    An open source infostealer written in C#.

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 15 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Looks up external IP address via web service 2 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Detects Pyinstaller 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Suspicious behavior: EnumeratesProcesses 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 10 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\fb4d683e3ae0f7d5e33df5bf301daa58_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\fb4d683e3ae0f7d5e33df5bf301daa58_JaffaCakes118.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3880
    • C:\Users\Admin\AppData\Local\Temp\main.exe
      "C:\Users\Admin\AppData\Local\Temp\main.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:4100
      • C:\Users\Admin\AppData\Local\Temp\main.exe
        "C:\Users\Admin\AppData\Local\Temp\main.exe"
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Suspicious use of WriteProcessMemory
        PID:316
        • C:\Windows\system32\cmd.exe
          C:\Windows\system32\cmd.exe /c cls
          4⤵
            PID:2400
          • C:\Windows\system32\cmd.exe
            C:\Windows\system32\cmd.exe /c cls
            4⤵
              PID:1440
        • C:\Users\Admin\AppData\Local\Temp\Insidious.exe
          "C:\Users\Admin\AppData\Local\Temp\Insidious.exe"
          2⤵
          • Executes dropped EXE
          • Checks processor information in registry
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:600

      Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

            Loading Replay Monitor...

            Downloads

            Insidious.exe

            • Path C:\Users\Admin\AppData\Local\Temp\Insidious.exe
            • Size 274KB
            • SHA256 5a12b229ff508e7ecfecdaf3a52da45ec02160587ccb852646e72b789ada6ac5
            • MD5 SHA1 SHA512 SSDEEP

            VCRUNTIME140.dll

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI41002\VCRUNTIME140.dll
            • Size 87KB
            • SHA256 bf5ff4603557c9959acec995653d052d9054ad4826df967974efd2f377c723d1
            • MD5 SHA1 SHA512 SSDEEP

            _bz2.pyd

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI41002\_bz2.pyd
            • Size 82KB
            • SHA256 c55821f5fdb0064c796b2c0b03b51971f073140bc210cbe6ed90387db2bed929
            • MD5 SHA1 SHA512 SSDEEP

            _ctypes.pyd

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI41002\_ctypes.pyd
            • Size 120KB
            • SHA256 9459d246df7a3c638776305cf3683946ba8db26a7de90df8b60e1be0b27e53c4
            • MD5 SHA1 SHA512 SSDEEP

            _hashlib.pyd

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI41002\_hashlib.pyd
            • Size 44KB
            • SHA256 3692fc8e70e6e29910032240080fc8109248ce9a996f0a70d69acf1542fca69a
            • MD5 SHA1 SHA512 SSDEEP

            _lzma.pyd

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI41002\_lzma.pyd
            • Size 246KB
            • SHA256 9442dc46829485670a6ac0c02ef83c54b401f1570d1d5d1d85c19c1587487764
            • MD5 SHA1 SHA512 SSDEEP

            _queue.pyd

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI41002\_queue.pyd
            • Size 27KB
            • SHA256 4aa1bbde1621c49edab4376cf9a13c1aa00a9b0a9905d9640a2694ef92f77d5e
            • MD5 SHA1 SHA512 SSDEEP

            _socket.pyd

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI41002\_socket.pyd
            • Size 77KB
            • SHA256 587c4f3092b5f3e34f6b1e927ecc7127b3fe2f7fa84e8a3d0c41828583bd5cef
            • MD5 SHA1 SHA512 SSDEEP

            _ssl.pyd

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI41002\_ssl.pyd
            • Size 115KB
            • SHA256 eaeefa6722c45e486f48a67ba18b4abb3ff0c29e5b30c23445c29a4d0b1cd3e4
            • MD5 SHA1 SHA512 SSDEEP

            base_library.zip

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI41002\base_library.zip
            • Size 758KB
            • SHA256 06f3c20b42de72e69e9c6b2f66f149f5a65161873e30d07129333f53858d97bb
            • MD5 SHA1 SHA512 SSDEEP

            cacert.pem

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI41002\certifi\cacert.pem
            • Size 257KB
            • SHA256 bb77f13d3fbec9e98bbf28ac95046b44196c7d8f55ab7720061e99991a829197
            • MD5 SHA1 SHA512 SSDEEP

            libcrypto-1_1.dll

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI41002\libcrypto-1_1.dll
            • Size 3.2MB
            • SHA256 012866b68f458ec204b9bce067af8f4a488860774e7e17973c49e583b52b828d
            • MD5 SHA1 SHA512 SSDEEP

            libffi-7.dll

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI41002\libffi-7.dll
            • Size 32KB
            • SHA256 8c1f7f64579d01fedfde07e0906b1f8e607c34d5e6424c87abe431a2322eba79
            • MD5 SHA1 SHA512 SSDEEP

            libssl-1_1.dll

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI41002\libssl-1_1.dll
            • Size 670KB
            • SHA256 1ce7ba99e817c1c2d71bc88a1bdd6fcad82aa5c3e519b91ebd56c96f22e3543b
            • MD5 SHA1 SHA512 SSDEEP

            python38.dll

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI41002\python38.dll
            • Size 4.0MB
            • SHA256 59ab345c565304f638effa7c0236f26041fd06e35041a75988e13995cd28ace9
            • MD5 SHA1 SHA512 SSDEEP

            select.pyd

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI41002\select.pyd
            • Size 26KB
            • SHA256 63b81af5d3576473c17ac929bea0add5bf8d7ea95c946caf66cbb9ad3f233a88
            • MD5 SHA1 SHA512 SSDEEP

            unicodedata.pyd

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI41002\unicodedata.pyd
            • Size 1.0MB
            • SHA256 0f84e9f0d0bf44d10527a9816fcab495e3d797b09e7bbd1e6bd666ceb4b6c1a8
            • MD5 SHA1 SHA512 SSDEEP

            main.exe

            • Path C:\Users\Admin\AppData\Local\Temp\main.exe
            • Size 6.7MB
            • SHA256 b2b71248264c08ba56ed8d39f72e6811fea58d110bcae39381e18bf3fd387d43
            • MD5 SHA1 SHA512 SSDEEP

            Process.txt

            • Path C:\Users\Admin\AppData\Roaming\44\Process.txt
            • Size 730B
            • SHA256 f132104c00d7aee1c723eceb3f094f810778ee5f988f62419b2894cb38e56a29
            • MD5 SHA1 SHA512

            Process.txt

            • Path C:\Users\Admin\AppData\Roaming\44\Process.txt
            • Size 929B
            • SHA256 5d4bd50b6a63d17be9adbc42d88b9b3642a248faa9e0c103c1f2c7b751e5481e
            • MD5 SHA1 SHA512

            Process.txt

            • Path C:\Users\Admin\AppData\Roaming\44\Process.txt
            • Size 1KB
            • SHA256 e650a99290add3feb3b2c4646055544e965ea942ed352e400e1f2a5c7be764c9
            • MD5 SHA1 SHA512

            Process.txt

            • Path C:\Users\Admin\AppData\Roaming\44\Process.txt
            • Size 1KB
            • SHA256 bb5cb5e40cad7f2b8873281ece521938d4c0ae034debf855578feb2f688507ff
            • MD5 SHA1 SHA512

            memory/600-21-0x00007FF86E600000-0x00007FF86F0C1000-memory.dmp

            memory/600-20-0x00000000001D0000-0x000000000021A000-memory.dmp

            memory/600-35-0x000000001AED0000-0x000000001AEE0000-memory.dmp

            memory/600-203-0x00007FF86E600000-0x00007FF86F0C1000-memory.dmp