Analysis

  • max time kernel
    142s
  • max time network
    148s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    30/09/2024, 00:10

General

  • Target

    ff8d576d2a44ebd419da4cd03cd49ba6_JaffaCakes118.exe

  • Size

    48KB

  • MD5

    ff8d576d2a44ebd419da4cd03cd49ba6

  • SHA1

    31de103753c826ed42883ab98daeeff443f12926

  • SHA256

    3ec257ac5b1594efa6862e7dfa6d4a4ed56f81ffb9e5320ce9dc95baaf9f00e1

  • SHA512

    ee719ac80d1b8a1b0bee99ad40aef23ec9a3bcb37f024eca902915209620624574256622782d1b8324d08e32bb4c30c8c04c0f17c52a0686819f5721e6b7de7a

  • SSDEEP

    384:lMd/UDAlKJ+dfZhnISoz2w3z/heMLxgbbMBrTjeVTJ/8jd/wnNnUw0mgWbrwrC95:lk/kAEIlNE2o1LxnBXjeVTJUjJwolVF

Malware Config

Extracted

Family

guloader

C2

https://onedrive.live.com/download?cid=4C3F5C65A99DA195&resid=4C3F5C65A99DA195%21164&authkey=ALVVLt1t0mIlYck

xor.base64

Signatures

  • Guloader,Cloudeye

    A shellcode based downloader first seen in 2020.

  • Checks QEMU agent file 2 TTPs 2 IoCs

    Checks presence of QEMU agent, possibly to detect virtualization.

  • Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ff8d576d2a44ebd419da4cd03cd49ba6_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\ff8d576d2a44ebd419da4cd03cd49ba6_JaffaCakes118.exe"
    1⤵
    • Checks QEMU agent file
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4236
    • C:\Users\Admin\AppData\Local\Temp\ff8d576d2a44ebd419da4cd03cd49ba6_JaffaCakes118.exe
      "C:\Users\Admin\AppData\Local\Temp\ff8d576d2a44ebd419da4cd03cd49ba6_JaffaCakes118.exe"
      2⤵
      • Checks QEMU agent file
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • System Location Discovery: System Language Discovery
      PID:4996

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/4236-2-0x00000000029F0000-0x00000000029F9000-memory.dmp

    Filesize

    36KB

  • memory/4236-3-0x0000000077AF1000-0x0000000077C11000-memory.dmp

    Filesize

    1.1MB

  • memory/4236-6-0x00000000029F0000-0x00000000029F9000-memory.dmp

    Filesize

    36KB

  • memory/4996-4-0x0000000000400000-0x000000000055D000-memory.dmp

    Filesize

    1.4MB

  • memory/4996-7-0x0000000000560000-0x0000000000660000-memory.dmp

    Filesize

    1024KB

  • memory/4996-11-0x0000000000560000-0x0000000000660000-memory.dmp

    Filesize

    1024KB

  • memory/4996-12-0x0000000000400000-0x000000000055D000-memory.dmp

    Filesize

    1.4MB