Analysis

  • max time kernel
    151s
  • max time network
    57s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    24-11-2022 00:17

General

  • Target

    76b28dad6f47e3109b17b6dbb667010384fe8642ea9974717ab3671ce4bb8348.exe

  • Size

    255KB

  • MD5

    35b02c3d82ce19d30260923cf78d489b

  • SHA1

    f7f3fb7c1303eb738299965336ce90c994ac908c

  • SHA256

    76b28dad6f47e3109b17b6dbb667010384fe8642ea9974717ab3671ce4bb8348

  • SHA512

    fb0fa4136d0fd34d3dd507253bacdaf817319615a8a10d2e8e35d1d7256ded87dca171429c423a2294fd2c59b1e94b4a4c3206286c7acf22871bd6d85918b837

  • SSDEEP

    6144:NOMZgBmcudxub3FX8xfS/eqHx8Pa6Bda6C9L1OjmXDmuY1NOHpZEiKrXy8BFnotu:NOIJiJ89SmqHx8Pa6Bda6C9L1Ojmzmuq

Score
10/10

Malware Config

Signatures

  • Modifies visiblity of hidden/system files in Explorer 2 TTPs 2 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 2 IoCs
  • Adds Run key to start application 2 TTPs 29 IoCs
  • Maps connected drives based on registry 3 TTPs 4 IoCs

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

  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\76b28dad6f47e3109b17b6dbb667010384fe8642ea9974717ab3671ce4bb8348.exe
    "C:\Users\Admin\AppData\Local\Temp\76b28dad6f47e3109b17b6dbb667010384fe8642ea9974717ab3671ce4bb8348.exe"
    1⤵
    • Modifies visiblity of hidden/system files in Explorer
    • Loads dropped DLL
    • Adds Run key to start application
    • Maps connected drives based on registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1760
    • C:\Users\Admin\waeuj.exe
      "C:\Users\Admin\waeuj.exe"
      2⤵
      • Modifies visiblity of hidden/system files in Explorer
      • Executes dropped EXE
      • Adds Run key to start application
      • Maps connected drives based on registry
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of SetWindowsHookEx
      PID:1736

Network

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Hidden Files and Directories

1
T1158

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Hidden Files and Directories

1
T1158

Modify Registry

2
T1112

Discovery

Query Registry

1
T1012

Peripheral Device Discovery

1
T1120

System Information Discovery

2
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\waeuj.exe
    Filesize

    255KB

    MD5

    35b02c3d82ce19d30260923cf78d489b

    SHA1

    f7f3fb7c1303eb738299965336ce90c994ac908c

    SHA256

    76b28dad6f47e3109b17b6dbb667010384fe8642ea9974717ab3671ce4bb8348

    SHA512

    fb0fa4136d0fd34d3dd507253bacdaf817319615a8a10d2e8e35d1d7256ded87dca171429c423a2294fd2c59b1e94b4a4c3206286c7acf22871bd6d85918b837

  • C:\Users\Admin\waeuj.exe
    Filesize

    255KB

    MD5

    35b02c3d82ce19d30260923cf78d489b

    SHA1

    f7f3fb7c1303eb738299965336ce90c994ac908c

    SHA256

    76b28dad6f47e3109b17b6dbb667010384fe8642ea9974717ab3671ce4bb8348

    SHA512

    fb0fa4136d0fd34d3dd507253bacdaf817319615a8a10d2e8e35d1d7256ded87dca171429c423a2294fd2c59b1e94b4a4c3206286c7acf22871bd6d85918b837

  • \Users\Admin\waeuj.exe
    Filesize

    255KB

    MD5

    35b02c3d82ce19d30260923cf78d489b

    SHA1

    f7f3fb7c1303eb738299965336ce90c994ac908c

    SHA256

    76b28dad6f47e3109b17b6dbb667010384fe8642ea9974717ab3671ce4bb8348

    SHA512

    fb0fa4136d0fd34d3dd507253bacdaf817319615a8a10d2e8e35d1d7256ded87dca171429c423a2294fd2c59b1e94b4a4c3206286c7acf22871bd6d85918b837

  • \Users\Admin\waeuj.exe
    Filesize

    255KB

    MD5

    35b02c3d82ce19d30260923cf78d489b

    SHA1

    f7f3fb7c1303eb738299965336ce90c994ac908c

    SHA256

    76b28dad6f47e3109b17b6dbb667010384fe8642ea9974717ab3671ce4bb8348

    SHA512

    fb0fa4136d0fd34d3dd507253bacdaf817319615a8a10d2e8e35d1d7256ded87dca171429c423a2294fd2c59b1e94b4a4c3206286c7acf22871bd6d85918b837

  • memory/1736-59-0x0000000000000000-mapping.dmp
  • memory/1760-56-0x0000000075281000-0x0000000075283000-memory.dmp
    Filesize

    8KB

  • memory/1760-64-0x0000000074161000-0x0000000074163000-memory.dmp
    Filesize

    8KB