Analysis

  • max time kernel
    150s
  • max time network
    146s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02-12-2022 00:21

General

  • Target

    266e308c6781117b513e36ef1e3a4bec15f3d474d75f7bee986473f593d856a1.exe

  • Size

    176KB

  • MD5

    1c3d4dd219a50f78d1b53f8ce4209040

  • SHA1

    af885067b50bc81c3132612a908cce2bde29e094

  • SHA256

    266e308c6781117b513e36ef1e3a4bec15f3d474d75f7bee986473f593d856a1

  • SHA512

    24b0f8a0c12c3478355783031aa7096b6da73c72bf101e1fbacabf0c98f8999673a5eec3e8498d9731f071bf4d4e6cbf6bc0c294825e2568256f84ca2f0a8217

  • SSDEEP

    3072:OC1IrPf+gj2HsfyKnvmb7/D26zjlBvWlzPpsPfjQ8sqLELTS55pMzcUK1vUyGe4q:Mf+1Knvmb7/D26zjlBvWhPpsPfjQ8sq7

Score
10/10

Malware Config

Signatures

  • Modifies visiblity of hidden/system files in Explorer 2 TTPs 2 IoCs
  • Executes dropped EXE 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Adds Run key to start application 2 TTPs 54 IoCs
  • 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 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\266e308c6781117b513e36ef1e3a4bec15f3d474d75f7bee986473f593d856a1.exe
    "C:\Users\Admin\AppData\Local\Temp\266e308c6781117b513e36ef1e3a4bec15f3d474d75f7bee986473f593d856a1.exe"
    1⤵
    • Modifies visiblity of hidden/system files in Explorer
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:336
    • C:\Users\Admin\noujiis.exe
      "C:\Users\Admin\noujiis.exe"
      2⤵
      • Modifies visiblity of hidden/system files in Explorer
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of SetWindowsHookEx
      PID:1240

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\noujiis.exe

    Filesize

    176KB

    MD5

    c4f7ba15aa58690bb33b48cf2963a82c

    SHA1

    67904c60b3f591af52de1826218089865a72faf7

    SHA256

    b361e63eccd9b4dd07b4872a76a5945e228192bcaae5e1fc5aed8b0a46e2a53a

    SHA512

    987a8e747d3d1602c74fd301ef4079b7efb445102754806073e7793573eb878e76f48a56842fb16fc4353e7229ee37360b69adcc58a9ca5b5999b002cf4850e7

  • C:\Users\Admin\noujiis.exe

    Filesize

    176KB

    MD5

    c4f7ba15aa58690bb33b48cf2963a82c

    SHA1

    67904c60b3f591af52de1826218089865a72faf7

    SHA256

    b361e63eccd9b4dd07b4872a76a5945e228192bcaae5e1fc5aed8b0a46e2a53a

    SHA512

    987a8e747d3d1602c74fd301ef4079b7efb445102754806073e7793573eb878e76f48a56842fb16fc4353e7229ee37360b69adcc58a9ca5b5999b002cf4850e7

  • memory/1240-134-0x0000000000000000-mapping.dmp