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Analysis

  • max time kernel
    148s
  • max time network
    157s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02/11/2024, 17:18

General

  • Target

    869e516b99f01a39f9ee0aa9e404fcbf_JaffaCakes118.exe

  • Size

    334KB

  • MD5

    869e516b99f01a39f9ee0aa9e404fcbf

  • SHA1

    c31624e5da2efa21bf15aad89d135c996a72365f

  • SHA256

    a9b1cf763a44f0cd8f59ff3178b19544216dc482aa47bbc7b83b5b26eda5e6aa

  • SHA512

    78494b86022d9efb9eea3e98daa5d6a88c52fe23a07f0bc9435057f7382b846f82121b6764644f475b77ae4843259ffc7ef5a20660137c51a903dec33b1aac7c

  • SSDEEP

    6144:Taa7bHF1Xe4xpNi+w+iEc/HXCO595ZZol+4NuTDid9LRyrlZZ:TfnXe47g+3iEc/SO595ZgUad9LRaZZ

Malware Config

Signatures

  • Contacts a large (16403) amount of remote hosts 1 TTPs

    This may indicate a network scan to discover remotely running services.

  • Creates a large amount of network flows 1 TTPs

    This may indicate a network scan to discover remotely running services.

  • Deletes shadow copies 3 TTPs

    Ransomware often targets backup files to inhibit system recovery.

  • Adds policy Run key to start application 2 TTPs 2 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Drops startup file 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Reads user/profile data of web browsers 3 TTPs

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

  • Adds Run key to start application 2 TTPs 4 IoCs
  • Looks up external IP address via web service 1 IoCs

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

  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

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

  • System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs

    Adversaries may check for Internet connectivity on compromised systems.

  • Interacts with shadow copies 3 TTPs 1 IoCs

    Shadow copies are often targeted by ransomware to inhibit system recovery.

  • Kills process with taskkill 1 IoCs
  • Modifies Control Panel 4 IoCs
  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 48 IoCs
  • Suspicious use of WriteProcessMemory 16 IoCs
  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

Processes

  • C:\Users\Admin\AppData\Local\Temp\869e516b99f01a39f9ee0aa9e404fcbf_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\869e516b99f01a39f9ee0aa9e404fcbf_JaffaCakes118.exe"
    1⤵
    • Adds policy Run key to start application
    • Drops startup file
    • Adds Run key to start application
    • System Location Discovery: System Language Discovery
    • Modifies Control Panel
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3772
    • C:\Users\Admin\AppData\Roaming\{B965DA44-BA2B-5232-B6E1-2553B5BB2851}\autoconv.exe
      "C:\Users\Admin\AppData\Roaming\{B965DA44-BA2B-5232-B6E1-2553B5BB2851}\autoconv.exe"
      2⤵
      • Adds policy Run key to start application
      • Checks computer location settings
      • Executes dropped EXE
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Modifies Control Panel
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1144
      • C:\Windows\system32\vssadmin.exe
        "C:\Windows\system32\vssadmin.exe" delete shadows /all /quiet
        3⤵
        • Interacts with shadow copies
        PID:1536
      • C:\Windows\system32\wbem\wmic.exe
        "C:\Windows\system32\wbem\wmic.exe" shadowcopy delete
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:3136
    • C:\Windows\SysWOW64\cmd.exe
      /d /c taskkill /t /f /im "869e516b99f01a39f9ee0aa9e404fcbf_JaffaCakes118.exe" > NUL & ping -n 1 127.0.0.1 > NUL & del "C:\Users\Admin\AppData\Local\Temp\869e516b99f01a39f9ee0aa9e404fcbf_JaffaCakes118.exe" > NUL
      2⤵
      • System Location Discovery: System Language Discovery
      • System Network Configuration Discovery: Internet Connection Discovery
      • Suspicious use of WriteProcessMemory
      PID:3284
      • C:\Windows\SysWOW64\taskkill.exe
        taskkill /t /f /im "869e516b99f01a39f9ee0aa9e404fcbf_JaffaCakes118.exe"
        3⤵
        • System Location Discovery: System Language Discovery
        • Kills process with taskkill
        • Suspicious use of AdjustPrivilegeToken
        PID:4044
      • C:\Windows\SysWOW64\PING.EXE
        ping -n 1 127.0.0.1
        3⤵
        • System Location Discovery: System Language Discovery
        • System Network Configuration Discovery: Internet Connection Discovery
        • Runs ping.exe
        PID:3080
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:4536

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\StartUp\autoconv.lnk

    Filesize

    1KB

    MD5

    543f288fdaf0126dd66112a1d24949bc

    SHA1

    91f5297f85efcc8ad379998f48c857105eff057b

    SHA256

    fc1848824735efb94d1e761e2f7618f3a96b0b4b54cc2cba647f905ad129dae3

    SHA512

    8af58ce7ba965f20787d470f46cc46a6164ff65c07b57f172237614b5c0ee1f5a1264c72704d34a9a4bd35ef2a2a5a7a9d95c760356094e456a2fda376cf70e3

  • C:\Users\Admin\AppData\Roaming\{B965DA44-BA2B-5232-B6E1-2553B5BB2851}\autoconv.exe

    Filesize

    334KB

    MD5

    869e516b99f01a39f9ee0aa9e404fcbf

    SHA1

    c31624e5da2efa21bf15aad89d135c996a72365f

    SHA256

    a9b1cf763a44f0cd8f59ff3178b19544216dc482aa47bbc7b83b5b26eda5e6aa

    SHA512

    78494b86022d9efb9eea3e98daa5d6a88c52fe23a07f0bc9435057f7382b846f82121b6764644f475b77ae4843259ffc7ef5a20660137c51a903dec33b1aac7c

  • memory/1144-29-0x0000000000400000-0x00000000005C9000-memory.dmp

    Filesize

    1.8MB

  • memory/1144-27-0x0000000000400000-0x00000000005C9000-memory.dmp

    Filesize

    1.8MB

  • memory/1144-26-0x0000000000400000-0x00000000005C9000-memory.dmp

    Filesize

    1.8MB

  • memory/1144-24-0x0000000004DF0000-0x0000000004DF1000-memory.dmp

    Filesize

    4KB

  • memory/1144-20-0x0000000000400000-0x00000000005C9000-memory.dmp

    Filesize

    1.8MB

  • memory/3772-4-0x0000000000720000-0x0000000000721000-memory.dmp

    Filesize

    4KB

  • memory/3772-8-0x0000000000400000-0x00000000005C9000-memory.dmp

    Filesize

    1.8MB

  • memory/3772-7-0x0000000000720000-0x0000000000721000-memory.dmp

    Filesize

    4KB

  • memory/3772-19-0x0000000000400000-0x00000000005C9000-memory.dmp

    Filesize

    1.8MB

  • memory/3772-5-0x00000000026E0000-0x0000000002730000-memory.dmp

    Filesize

    320KB

  • memory/3772-6-0x0000000000720000-0x0000000000721000-memory.dmp

    Filesize

    4KB

  • memory/3772-0-0x00000000026E0000-0x0000000002730000-memory.dmp

    Filesize

    320KB

  • memory/3772-3-0x0000000000720000-0x0000000000721000-memory.dmp

    Filesize

    4KB

  • memory/3772-2-0x0000000000720000-0x0000000000721000-memory.dmp

    Filesize

    4KB

  • memory/3772-1-0x0000000000720000-0x0000000000721000-memory.dmp

    Filesize

    4KB