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Overview

overview

10

Static

static

7

661d6eb6ac...18.exe

windows7-x64

10

661d6eb6ac...18.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    144s
  • max time network
    147s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240709-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23/07/2024, 04:20

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General

  • Target

    661d6eb6ac7c569c21c765a6ea09fd0a_JaffaCakes118.exe

  • Size

    643KB

  • MD5

    661d6eb6ac7c569c21c765a6ea09fd0a

  • SHA1

    3ba9f6031a19041bc499215a61ad82c34997ddcb

  • SHA256

    458a7240bace209c7a5490818bea5960d4efd006e03a441dc6ad5370a52aff1a

  • SHA512

    a293bdd7cef3b258bb011777531541d81e4d2e1a9f6018fa2e688b4d00fb0226b9b12b54d692d15733df2e036a331ddece79a47d7e5d622b0aede057afae8f9c

  • SSDEEP

    12288:xjkArEN249AyE/rbaMct4bO2/VGVw7E3kyaXl65zsWvVsMojKSHxgP7aOgCcDBDx:+FE//Tct4bOssROs5IW6MYKaxtLEG

Score
10/10
evasionpersistencetrojanupx

Malware Config

Signatures

  • Modifies visiblity of hidden/system files in Explorer 2 TTPs 2 IoCs
    evasion
  • Adds policy Run key to start application 2 TTPs 4 IoCs
    persistence
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 1 IoCs
  • UPX packed file 5 IoCs

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

    upx
  • Adds Run key to start application 2 TTPs 2 IoCs
    persistence
  • Checks whether UAC is enabled 1 TTPs 2 IoCs
    evasiontrojan
  • Looks up external IP address via web service 1 IoCs

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

  • AutoIT Executable 3 IoCs

    AutoIT scripts compiled to PE executables.

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

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

  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of FindShellTrayWindow 6 IoCs
  • Suspicious use of SendNotifyMessage 6 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\661d6eb6ac7c569c21c765a6ea09fd0a_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\661d6eb6ac7c569c21c765a6ea09fd0a_JaffaCakes118.exe"
    1⤵
    • Modifies visiblity of hidden/system files in Explorer
    • Adds policy Run key to start application
    • Checks computer location settings
    • Adds Run key to start application
    • Checks whether UAC is enabled
    • Drops file in System32 directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:5096
    • C:\Windows\SysWOW64\csrcs.exe
      "C:\Windows\SysWOW64\csrcs.exe"
      2⤵
      • Modifies visiblity of hidden/system files in Explorer
      • Adds policy Run key to start application
      • Executes dropped EXE
      • Adds Run key to start application
      • Checks whether UAC is enabled
      • Drops file in System32 directory
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:2996

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\ufyszui
    Filesize

    97KB

    MD5

    6f913b8649ade1cfeb20272ce3dc89ef

    SHA1

    f90fc07f5d70259193226ab72a3d3a82ba8f9156

    SHA256

    a563e3685911e7e9b2bca0f1c269ad7c7e332fc6a74d2614beca2ace9a0f40ef

    SHA512

    db22b097646880a966aff1bcb8cacd70a8ae775b358df7ae9798b90c628c8f8edefd4c76500ac87613e12605592034dc7cd40670d78af7c740f9fed0ff0c79f9

    Download Submit

  • C:\Windows\SysWOW64\csrcs.exe
    Filesize

    643KB

    MD5

    661d6eb6ac7c569c21c765a6ea09fd0a

    SHA1

    3ba9f6031a19041bc499215a61ad82c34997ddcb

    SHA256

    458a7240bace209c7a5490818bea5960d4efd006e03a441dc6ad5370a52aff1a

    SHA512

    a293bdd7cef3b258bb011777531541d81e4d2e1a9f6018fa2e688b4d00fb0226b9b12b54d692d15733df2e036a331ddece79a47d7e5d622b0aede057afae8f9c

    Download Submit

  • memory/2996-31-0x0000000000400000-0x000000000051F000-memory.dmp

    Filesize

    1.1MB

    Download

  • memory/2996-62-0x0000000000400000-0x000000000051F000-memory.dmp

    Filesize

    1.1MB

    Download

  • memory/5096-0-0x0000000000400000-0x000000000051F000-memory.dmp

    Filesize

    1.1MB

    Download

  • memory/5096-30-0x0000000000400000-0x000000000051F000-memory.dmp

    Filesize

    1.1MB

    Download