Analysis

  • max time kernel
    146s
  • max time network
    149s
  • platform
    windows7_x64
  • resource
    win7-20240508-en
  • resource tags

    arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
  • submitted
    29-05-2024 15:19

General

  • Target

    b9e92b710ca8ed56d9038c1f7a9ef534267cc4a089773c0129ba56b38e479b00.exe

  • Size

    3.3MB

  • MD5

    b9dd72244170c5672bb7ad4e6f4056b9

  • SHA1

    779bceced7259c82068c56befc8778bd0fcf5caf

  • SHA256

    b9e92b710ca8ed56d9038c1f7a9ef534267cc4a089773c0129ba56b38e479b00

  • SHA512

    312e39c2114ee8e4d0c5d769cf439f3fd068da62fb7fc3f4c41510c41ba7e49b62a07a19013f5d323e41b2fe960ae6bf3c3e20683e89f10da3b2614f9db47b22

  • SSDEEP

    24576:dOyHutimZ9VSly2hVvHW6qMnSbTBBhBMNkI:QHPkVOBTKr

Malware Config

Signatures

  • Detect PurpleFox Rootkit 2 IoCs

    Detect PurpleFox Rootkit.

  • Gh0st RAT payload 2 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 2 IoCs
  • Loads dropped DLL 1 IoCs
  • Drops file in System32 directory 2 IoCs
  • Modifies data under HKEY_USERS 4 IoCs
  • Runs ping.exe 1 TTPs 1 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\b9e92b710ca8ed56d9038c1f7a9ef534267cc4a089773c0129ba56b38e479b00.exe
    "C:\Users\Admin\AppData\Local\Temp\b9e92b710ca8ed56d9038c1f7a9ef534267cc4a089773c0129ba56b38e479b00.exe"
    1⤵
    • Drops file in System32 directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2232
    • 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\B9E92B~1.EXE > nul
      2⤵
      • Deletes itself
      • Suspicious use of WriteProcessMemory
      PID:2344
      • C:\Windows\SysWOW64\PING.EXE
        ping -n 2 127.0.0.1
        3⤵
        • Runs ping.exe
        PID:2712
  • C:\Windows\SysWOW64\sainbox.exe
    C:\Windows\SysWOW64\sainbox.exe -auto
    1⤵
    • Executes dropped EXE
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2284
    • C:\Windows\SysWOW64\sainbox.exe
      C:\Windows\SysWOW64\sainbox.exe -acsi
      2⤵
      • Drops file in Drivers directory
      • Sets service image path in registry
      • Executes dropped EXE
      • Modifies data under HKEY_USERS
      • Suspicious behavior: LoadsDriver
      • Suspicious use of AdjustPrivilegeToken
      PID:2716

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

Remote System Discovery

1
T1018

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Windows\SysWOW64\sainbox.exe
    Filesize

    3.3MB

    MD5

    b9dd72244170c5672bb7ad4e6f4056b9

    SHA1

    779bceced7259c82068c56befc8778bd0fcf5caf

    SHA256

    b9e92b710ca8ed56d9038c1f7a9ef534267cc4a089773c0129ba56b38e479b00

    SHA512

    312e39c2114ee8e4d0c5d769cf439f3fd068da62fb7fc3f4c41510c41ba7e49b62a07a19013f5d323e41b2fe960ae6bf3c3e20683e89f10da3b2614f9db47b22

  • memory/2232-0-0x0000000010000000-0x000000001019F000-memory.dmp
    Filesize

    1.6MB

  • memory/2716-19-0x0000000010000000-0x000000001019F000-memory.dmp
    Filesize

    1.6MB