Analysis

  • max time kernel
    110s
  • max time network
    93s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    10-11-2024 01:40

General

  • Target

    a44c2a6d65bb122b450d52b51af726ebd349020048ffb9225be9cefe88510080N.exe

  • Size

    89KB

  • MD5

    0aa4c3cea8de31fa7ecb1564d1e07e00

  • SHA1

    cb034c1a34af9e1c0fddaf8cba3024e28f20af23

  • SHA256

    a44c2a6d65bb122b450d52b51af726ebd349020048ffb9225be9cefe88510080

  • SHA512

    9d3498f62fa9122a3b6c3d5f34f49872c0c444dc1ba964f3eb77be253eca4656753f30b29ced98203971e31f5211d1ff79f024a253cb183f09ade3ed49519447

  • SSDEEP

    1536:yr3Z5IfQmv81a7pP1xF3yX2tM/jTEwwwEiiiixMkMMMMO:WJOfQm01q9X3yX2q/jTJp

Malware Config

Signatures

  • Sets file to hidden 1 TTPs 1 IoCs

    Modifies file attributes to stop it showing in Explorer etc.

  • Deletes itself 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Indicator Removal: File Deletion 1 TTPs

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

  • UPX packed file 5 IoCs

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

  • Drops file in Windows directory 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

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

  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs
  • Views/modifies file attributes 1 TTPs 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a44c2a6d65bb122b450d52b51af726ebd349020048ffb9225be9cefe88510080N.exe
    "C:\Users\Admin\AppData\Local\Temp\a44c2a6d65bb122b450d52b51af726ebd349020048ffb9225be9cefe88510080N.exe"
    1⤵
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2872
    • C:\Windows\SysWOW64\attrib.exe
      attrib +a +s +h +r C:\Windows\Debug\iuyhost.exe
      2⤵
      • Sets file to hidden
      • Drops file in Windows directory
      • System Location Discovery: System Language Discovery
      • Views/modifies file attributes
      PID:492
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\A44C2A~1.EXE > nul
      2⤵
      • Deletes itself
      • System Location Discovery: System Language Discovery
      PID:2344
  • C:\Windows\Debug\iuyhost.exe
    C:\Windows\Debug\iuyhost.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Checks processor information in registry
    PID:2156

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Windows\debug\iuyhost.exe

    Filesize

    89KB

    MD5

    cb4a32ad2be645dd5b3e630b5bb349db

    SHA1

    2a756d2f5ea559fc5f877faa6595f04fad5822e7

    SHA256

    e62a30f567b69c61a7c0617f14aa1d32059c1e1cb2c52db283b52d20e5e3e5ce

    SHA512

    242f4e39a627df356c19a56bd82461ace123af16cfa7929d7d64471290fea2b26afb2da8094da2e44724e8b6d37229ad50100e4989f8527657c2379f5ca845f0

  • memory/2156-5-0x0000000000400000-0x0000000000416000-memory.dmp

    Filesize

    88KB

  • memory/2156-7-0x0000000000400000-0x0000000000416000-memory.dmp

    Filesize

    88KB

  • memory/2872-0-0x0000000000400000-0x0000000000416000-memory.dmp

    Filesize

    88KB

  • memory/2872-6-0x0000000000400000-0x0000000000416000-memory.dmp

    Filesize

    88KB