Analysis

  • max time kernel
    145s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    20-06-2024 03:59

General

  • Target

    37d67a422a2c3eac276ec75c6b4600aba1028e244b01a3c9b1e22fbace9dfcad.exe

  • Size

    539KB

  • MD5

    bd50ba38259a5c7a2a376ea20c16d895

  • SHA1

    a23cc9f184aa87b8ca1e5fe1589b192d303fe0dd

  • SHA256

    37d67a422a2c3eac276ec75c6b4600aba1028e244b01a3c9b1e22fbace9dfcad

  • SHA512

    30ebadd2be0c2095e7221c18a58b0799830e321a94bc5e102f48842c331c0b5743565759a5c2e1c635a7fb5efb03e10b2eaf3da4b9a41dd0bfce16a454d16c66

  • SSDEEP

    12288:whymnwJFPNdgBAEHApqePJN1AmLM7uVq9sSYN:wUmwrl2Ao7sJNlM7ymsSYN

Malware Config

Signatures

  • Detect PurpleFox Rootkit 5 IoCs

    Detect PurpleFox Rootkit.

  • Gh0st RAT payload 5 IoCs
  • Gh0strat

    Gh0st RAT is a remote access tool (RAT) with its source code public and it has been used by multiple Chinese groups.

  • PurpleFox

    PurpleFox is an exploit kit used to distribute other malware families and first seen in 2018.

  • Drops file in Drivers directory 1 IoCs
  • Sets service image path in registry 2 TTPs 1 IoCs
  • 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 5 IoCs

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

  • Enumerates physical storage devices 1 TTPs

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

  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: LoadsDriver 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\37d67a422a2c3eac276ec75c6b4600aba1028e244b01a3c9b1e22fbace9dfcad.exe
    "C:\Users\Admin\AppData\Local\Temp\37d67a422a2c3eac276ec75c6b4600aba1028e244b01a3c9b1e22fbace9dfcad.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2880
    • C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup\Phija.exe
      "C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup\Phija.exe"
      2⤵
      • Drops file in Drivers directory
      • Sets service image path in registry
      • Executes dropped EXE
      • Suspicious behavior: LoadsDriver
      • Suspicious use of AdjustPrivilegeToken
      PID:4028
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ping -n 2 127.0.0.1 > nul && del C:\Users\Admin\AppData\Local\Temp\37D67A~1.EXE > nul
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3576
      • C:\Windows\SysWOW64\PING.EXE
        ping -n 2 127.0.0.1
        3⤵
        • Runs ping.exe
        PID:2776

Network

MITRE ATT&CK Matrix ATT&CK v13

Persistence

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Defense Evasion

Modify Registry

1
T1112

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Remote System Discovery

1
T1018

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\ProgramData\Microsoft\Windows\Start Menu\Programs\StartUp\Phija.exe
    Filesize

    539KB

    MD5

    bd50ba38259a5c7a2a376ea20c16d895

    SHA1

    a23cc9f184aa87b8ca1e5fe1589b192d303fe0dd

    SHA256

    37d67a422a2c3eac276ec75c6b4600aba1028e244b01a3c9b1e22fbace9dfcad

    SHA512

    30ebadd2be0c2095e7221c18a58b0799830e321a94bc5e102f48842c331c0b5743565759a5c2e1c635a7fb5efb03e10b2eaf3da4b9a41dd0bfce16a454d16c66

  • memory/2880-0-0x0000000000400000-0x0000000000547000-memory.dmp
    Filesize

    1.3MB

  • memory/2880-1-0x0000000010000000-0x000000001019F000-memory.dmp
    Filesize

    1.6MB

  • memory/2880-15-0x0000000000400000-0x0000000000547000-memory.dmp
    Filesize

    1.3MB

  • memory/4028-16-0x0000000000400000-0x0000000000547000-memory.dmp
    Filesize

    1.3MB

  • memory/4028-18-0x0000000010000000-0x000000001019F000-memory.dmp
    Filesize

    1.6MB

  • memory/4028-34-0x0000000000400000-0x0000000000547000-memory.dmp
    Filesize

    1.3MB