Analysis

  • max time kernel
    119s
  • max time network
    95s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    10-11-2024 01:38

General

  • Target

    3ad4b2704dc7dd432f348157433878a89a05e562640930e3bdfe6960bccdbe0cN.exe

  • Size

    65KB

  • MD5

    a70dbc079f9fe5c9729526477515e9e0

  • SHA1

    75e00eb31ba762ea155c3f7d78a137313c05c9ae

  • SHA256

    3ad4b2704dc7dd432f348157433878a89a05e562640930e3bdfe6960bccdbe0c

  • SHA512

    2fc1f287d4ec9e4e162f03e03dfd0817b999313b92a7f20fade406b4494ffea3c2be6f30facaf30efce9cbbb1cda9d38c09808f1a9e3dc4463230ba6a4aaf9de

  • SSDEEP

    768:MDcpEBMLfQcubV5wGE96YyXDTLdEBBBBZ:MDcfLfIbtEbyXfZc

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.

  • 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.

  • 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\3ad4b2704dc7dd432f348157433878a89a05e562640930e3bdfe6960bccdbe0cN.exe
    "C:\Users\Admin\AppData\Local\Temp\3ad4b2704dc7dd432f348157433878a89a05e562640930e3bdfe6960bccdbe0cN.exe"
    1⤵
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1688
    • C:\Windows\SysWOW64\attrib.exe
      attrib +a +s +h +r C:\Windows\Debug\zskhost.exe
      2⤵
      • Sets file to hidden
      • Drops file in Windows directory
      • System Location Discovery: System Language Discovery
      • Views/modifies file attributes
      PID:2236
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\3AD4B2~1.EXE > nul
      2⤵
      • Deletes itself
      • System Location Discovery: System Language Discovery
      PID:2088
  • C:\Windows\Debug\zskhost.exe
    C:\Windows\Debug\zskhost.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:2896

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Windows\Debug\zskhost.exe

    Filesize

    65KB

    MD5

    fcc82cd8b627616bf9318b871a6c4974

    SHA1

    9051a2232d7f19cb1d55abc585e948ea27f9275b

    SHA256

    4e01eabb8231fe18aceb87bd81a485f9bccf192f5d00958498b3412fb9222523

    SHA512

    880717b10f33f35c2ce9a9605eaac1739935764e3b15b9e6b9da891194ef299da26bda281c39d88e82cc7c491fe2a892b8611e42cdcbb695ff59eeabe4c6eb31