Analysis

  • max time kernel
    140s
  • max time network
    144s
  • platform
    windows7_x64
  • resource
    win7-20231129-en
  • resource tags

    arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
  • submitted
    19-06-2024 15:36

General

  • Target

    37d67a422a2c3eac276ec75c6b4600aba1028e244b01a3c9b1e22fbace9dfcad.exe

  • Size

    539KB

  • MD5

    bd50ba38259a5c7a2a376ea20c16d895

  • SHA1

    a23cc9f184aa87b8ca1e5fe1589b192d303fe0dd

  • SHA256

    37d67a422a2c3eac276ec75c6b4600aba1028e244b01a3c9b1e22fbace9dfcad

  • SHA512

    30ebadd2be0c2095e7221c18a58b0799830e321a94bc5e102f48842c331c0b5743565759a5c2e1c635a7fb5efb03e10b2eaf3da4b9a41dd0bfce16a454d16c66

  • SSDEEP

    12288:whymnwJFPNdgBAEHApqePJN1AmLM7uVq9sSYN:wUmwrl2Ao7sJNlM7ymsSYN

Malware Config

Signatures

  • Detect PurpleFox Rootkit 4 IoCs

    Detect PurpleFox Rootkit.

  • Gh0st RAT payload 4 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
  • Deletes itself 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • UPX packed file 4 IoCs

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

  • Enumerates connected drives 3 TTPs 22 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Enumerates physical storage devices 1 TTPs

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

  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 33 IoCs
  • Suspicious behavior: LoadsDriver 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\37d67a422a2c3eac276ec75c6b4600aba1028e244b01a3c9b1e22fbace9dfcad.exe
    "C:\Users\Admin\AppData\Local\Temp\37d67a422a2c3eac276ec75c6b4600aba1028e244b01a3c9b1e22fbace9dfcad.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2188
    • 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
      • Enumerates connected drives
      • Checks processor information in registry
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: LoadsDriver
      • Suspicious use of AdjustPrivilegeToken
      PID:2780
    • 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⤵
      • Deletes itself
      • Suspicious use of WriteProcessMemory
      PID:3060
      • C:\Windows\SysWOW64\PING.EXE
        ping -n 2 127.0.0.1
        3⤵
        • Runs ping.exe
        PID:2612

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

2
T1012

Peripheral Device Discovery

1
T1120

System Information Discovery

3
T1082

Remote System Discovery

1
T1018

Replay Monitor

Loading Replay Monitor...

Downloads

  • \ProgramData\Microsoft\Windows\Start Menu\Programs\Startup\Phija.exe
    Filesize

    539KB

    MD5

    bd50ba38259a5c7a2a376ea20c16d895

    SHA1

    a23cc9f184aa87b8ca1e5fe1589b192d303fe0dd

    SHA256

    37d67a422a2c3eac276ec75c6b4600aba1028e244b01a3c9b1e22fbace9dfcad

    SHA512

    30ebadd2be0c2095e7221c18a58b0799830e321a94bc5e102f48842c331c0b5743565759a5c2e1c635a7fb5efb03e10b2eaf3da4b9a41dd0bfce16a454d16c66

  • memory/2188-0-0x0000000000400000-0x0000000000547000-memory.dmp
    Filesize

    1.3MB

  • memory/2188-1-0x0000000010000000-0x000000001019F000-memory.dmp
    Filesize

    1.6MB

  • memory/2188-12-0x0000000002C90000-0x0000000002DD7000-memory.dmp
    Filesize

    1.3MB

  • memory/2188-22-0x0000000000400000-0x0000000000547000-memory.dmp
    Filesize

    1.3MB

  • memory/2780-20-0x0000000000400000-0x0000000000547000-memory.dmp
    Filesize

    1.3MB