Analysis

  • max time kernel
    140s
  • max time network
    122s
  • platform
    windows7_x64
  • resource
    win7-20231129-en
  • resource tags

    arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
  • submitted
    22-06-2024 13:17

General

  • Target

    0253556cd907c56e06aad3d79f115d5c_JaffaCakes118.exe

  • Size

    202KB

  • MD5

    0253556cd907c56e06aad3d79f115d5c

  • SHA1

    4a0ca9d04e1699fff3b5256c89c731a5e9f0a744

  • SHA256

    4dc06fdd711f03eb0a3eaf7fd08f9153629674e7ddb4a48410087bb54c775c65

  • SHA512

    85f248d8daab55aaf60d354eae2223cb42939696bd40995d8662f7cedf5f45273e0df06fc6d65cb9213e26655d301387dbdeddcd8ef4e9fb9c91a2f0bad0192a

  • SSDEEP

    6144:RI/OY3tLyGilOWguqNSK+9rd7oUT7TF6RfQ9:RI2YdRVC77T7TF

Malware Config

Signatures

  • Loads dropped DLL 5 IoCs
  • UPX packed file 2 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Installs/modifies Browser Helper Object 2 TTPs 1 IoCs

    BHOs are DLL modules which act as plugins for Internet Explorer.

  • Drops file in System32 directory 2 IoCs
  • Modifies registry class 6 IoCs
  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of WriteProcessMemory 7 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\0253556cd907c56e06aad3d79f115d5c_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\0253556cd907c56e06aad3d79f115d5c_JaffaCakes118.exe"
    1⤵
    • Loads dropped DLL
    • Adds Run key to start application
    • Installs/modifies Browser Helper Object
    • Drops file in System32 directory
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:2180
    • C:\Windows\SysWOW64\rundll32.exe
      C:\Windows\system32\rundll32.exe C:\Windows\system32\aqudwrc.dll,opuyyg
      2⤵
      • Loads dropped DLL
      PID:2368

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Windows\SysWOW64\aqudwrc.dll

    Filesize

    92KB

    MD5

    2d472c8665f37b45b78772684418fe21

    SHA1

    70119803f17592c2fb3188ceb5c32e9d19ce0737

    SHA256

    a10734205236fa06b26951e511074fa7d16de8cb7759d3fb853930301a33856e

    SHA512

    7c30a74b717da8fddf129dd30005ee4535b6dcebb16db9fa94d05b362e8c07717ce3324cdb13fde08802f42bad09d2eadfb4e7b754583693fb86b61c91b9c94b

  • \Windows\SysWOW64\yqyzlvl.dll

    Filesize

    71KB

    MD5

    cd276b7f841eedfd1a488807d47d5d74

    SHA1

    359cbd9d8ea50ab1378a6d9df624218877146776

    SHA256

    f5ed6dde98ede418d40a3906461b9b4f052f0e9cec37cd2ef2717af79247dfb7

    SHA512

    8f36466ce83d02c0f028df5cce54298eee2ce9e51167297966bf861a464f7eb9c1e148363b6f5bdda2de6a736c4654ab53a8e1a5b4bd80b6cf6cc94b3212c257

  • memory/2180-0-0x0000000000400000-0x0000000000435000-memory.dmp

    Filesize

    212KB

  • memory/2180-5-0x0000000010000000-0x0000000010018000-memory.dmp

    Filesize

    96KB

  • memory/2180-16-0x0000000000400000-0x0000000000435000-memory.dmp

    Filesize

    212KB

  • memory/2180-19-0x0000000010000000-0x0000000010018000-memory.dmp

    Filesize

    96KB

  • memory/2180-26-0x0000000010000000-0x0000000010018000-memory.dmp

    Filesize

    96KB

  • memory/2368-13-0x0000000010000000-0x000000001001E000-memory.dmp

    Filesize

    120KB

  • memory/2368-12-0x0000000010000000-0x000000001001E000-memory.dmp

    Filesize

    120KB

  • memory/2368-11-0x0000000010000000-0x000000001001E000-memory.dmp

    Filesize

    120KB

  • memory/2368-20-0x0000000010000000-0x000000001001E000-memory.dmp

    Filesize

    120KB