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Analysis

  • max time kernel
    99s
  • max time network
    101s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    18/08/2024, 09:55

General

  • Target

    4188e6b9061061d946909946d81d0c10N.exe

  • Size

    135KB

  • MD5

    4188e6b9061061d946909946d81d0c10

  • SHA1

    05c8bee2af630442b51aa2d1938ffa464ca234b2

  • SHA256

    3d79d0b0fcaa165200205faf9a9fc8858e51072f8c9c7f4ac3aecc74c1c48167

  • SHA512

    3b31a54e22540ef841e35c8ac5d74b8f564fe0fddfae5413989df260ee443c45ad9598c4f5c6cb6f27740bddb1ff4573f10b535015eb121bbb274dbdb9b87aca

  • SSDEEP

    1536:YGYU/W2/HG6QMauSV3ixJHABLrmhH7i9eNOOg00GqMIK7aGZh3SOv:YfU/WF6QMauSuiWNi9eNOl0007NZIOv

Malware Config

Signatures

  • 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 6 IoCs

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

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Indicator Removal: File Deletion 1 TTPs

    Adversaries may delete files left behind by the actions of their intrusion activity.

  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

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

  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\4188e6b9061061d946909946d81d0c10N.exe
    "C:\Users\Admin\AppData\Local\Temp\4188e6b9061061d946909946d81d0c10N.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3264
    • C:\ProgramData\Update\wuauclt.exe
      "C:\ProgramData\Update\wuauclt.exe" /run
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:1784
    • C:\windows\SysWOW64\cmd.exe
      "C:\windows\system32\cmd.exe" /c del /q "C:\Users\Admin\AppData\Local\Temp\4188e6b9061061d946909946d81d0c10N.exe" >> NUL
      2⤵
      • System Location Discovery: System Language Discovery
      PID:3132

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\ProgramData\Update\wuauclt.exe

    Filesize

    135KB

    MD5

    9a43a1b1bd3eee4fa469fbf2b132277e

    SHA1

    11bc285a35b966eee3207b072b86b6c3f6f20ef2

    SHA256

    ab683027ac2783b7154ddf4fc113ec166a95478bacd41119056f5e04813b5ead

    SHA512

    b144520a54dfeab881d39814218c2a2fbe4833742ce8b2551db50d3c60ba634e05902f208dcc84cd965f70a5d2055dc3894f61aaeeaac58f86f982299ff67695

  • memory/1784-4-0x0000000000CF0000-0x0000000000D18000-memory.dmp

    Filesize

    160KB

  • memory/1784-7-0x0000000000CF0000-0x0000000000D18000-memory.dmp

    Filesize

    160KB

  • memory/3264-0-0x0000000000760000-0x0000000000788000-memory.dmp

    Filesize

    160KB

  • memory/3264-6-0x0000000000760000-0x0000000000788000-memory.dmp

    Filesize

    160KB

  • memory/3264-8-0x0000000000760000-0x0000000000788000-memory.dmp

    Filesize

    160KB