Analysis

  • max time kernel
    150s
  • max time network
    118s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    29-05-2024 20:12

General

  • Target

    4fe2557787da9b6361632a5d27c2434fe1f0b2d527ba6681c4d9132866e45ac4.exe

  • Size

    2.6MB

  • MD5

    b04babb3da4c2be3548e3b17487a5979

  • SHA1

    02814e90181e70d9d6815dd0f76b99067f50296a

  • SHA256

    4fe2557787da9b6361632a5d27c2434fe1f0b2d527ba6681c4d9132866e45ac4

  • SHA512

    a39acba6415e1da8fa6aa3f3ddab954bb0dac8398f991f980f08c58a50431b7621c018583947b6973db8b263c6c3b2db77f1c1b4a97a3dc151b7a19e2c363d95

  • SSDEEP

    24576:+CwsbKgbQ5NANIvGTYwMHXA+wT1kfTw4SIuvB74fgt7ibhRM5QhKehFdMtRj7nHf:+CwsbCANnKXferL7Vwe/Gg0P+WhNYs

Malware Config

Signatures

  • AsyncRat

    AsyncRAT is designed to remotely monitor and control other computers written in C#.

  • Detect PurpleFox Rootkit 5 IoCs

    Detect PurpleFox Rootkit.

  • Gh0st RAT payload 6 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.

  • Async RAT payload 1 IoCs
  • Drops file in Drivers directory 1 IoCs
  • Sets DLL path for service in the registry 2 TTPs 1 IoCs
  • Sets service image path in registry 2 TTPs 1 IoCs
  • Executes dropped EXE 6 IoCs
  • Loads dropped DLL 13 IoCs
  • UPX packed file 6 IoCs

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

  • Drops file in System32 directory 6 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious behavior: LoadsDriver 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 37 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\4fe2557787da9b6361632a5d27c2434fe1f0b2d527ba6681c4d9132866e45ac4.exe
    "C:\Users\Admin\AppData\Local\Temp\4fe2557787da9b6361632a5d27c2434fe1f0b2d527ba6681c4d9132866e45ac4.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1968
    • C:\Users\Admin\AppData\Local\Temp\R.exe
      C:\Users\Admin\AppData\Local\Temp\\R.exe
      2⤵
      • Sets DLL path for service in the registry
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops file in System32 directory
      PID:2468
    • C:\Users\Admin\AppData\Local\Temp\N.exe
      C:\Users\Admin\AppData\Local\Temp\\N.exe
      2⤵
      • Executes dropped EXE
      • Drops file in System32 directory
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2572
      • 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\N.exe > nul
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:2624
        • C:\Windows\SysWOW64\PING.EXE
          ping -n 2 127.0.0.1
          4⤵
          • Runs ping.exe
          PID:2440
    • C:\Users\Admin\AppData\Local\Temp\HD_4fe2557787da9b6361632a5d27c2434fe1f0b2d527ba6681c4d9132866e45ac4.exe
      C:\Users\Admin\AppData\Local\Temp\HD_4fe2557787da9b6361632a5d27c2434fe1f0b2d527ba6681c4d9132866e45ac4.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:2548
      • C:\Windows\system32\WerFault.exe
        C:\Windows\system32\WerFault.exe -u -p 2548 -s 508
        3⤵
        • Loads dropped DLL
        PID:2900
  • C:\Windows\SysWOW64\svchost.exe
    C:\Windows\SysWOW64\svchost.exe -k "Remote Data"
    1⤵
      PID:2652
    • C:\Windows\SysWOW64\svchost.exe
      C:\Windows\SysWOW64\svchost.exe -k "Remote Data"
      1⤵
      • Loads dropped DLL
      • Drops file in System32 directory
      • Suspicious use of WriteProcessMemory
      PID:3016
      • C:\Windows\SysWOW64\Remote Data.exe
        "C:\Windows\system32\Remote Data.exe" "c:\windows\system32\259397932.txt",MainThread
        2⤵
        • Executes dropped EXE
        • Loads dropped DLL
        PID:2704
    • C:\Windows\SysWOW64\TXPlatfor.exe
      C:\Windows\SysWOW64\TXPlatfor.exe -auto
      1⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:2516
      • C:\Windows\SysWOW64\TXPlatfor.exe
        C:\Windows\SysWOW64\TXPlatfor.exe -acsi
        2⤵
        • Drops file in Drivers directory
        • Sets service image path in registry
        • Executes dropped EXE
        • Suspicious behavior: LoadsDriver
        • Suspicious use of AdjustPrivilegeToken
        PID:2412

    Network

    MITRE ATT&CK Matrix ATT&CK v13

    Persistence

    Boot or Logon Autostart Execution

    2
    T1547

    Registry Run Keys / Startup Folder

    2
    T1547.001

    Privilege Escalation

    Boot or Logon Autostart Execution

    2
    T1547

    Registry Run Keys / Startup Folder

    2
    T1547.001

    Defense Evasion

    Modify Registry

    2
    T1112

    Discovery

    System Information Discovery

    1
    T1082

    Remote System Discovery

    1
    T1018

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\HD_4fe2557787da9b6361632a5d27c2434fe1f0b2d527ba6681c4d9132866e45ac4.exe
      Filesize

      60KB

      MD5

      dcc62cba7ebc9bf0e63074464520574a

      SHA1

      346d3ff0a189b4c1c9f19c3292afb3b887c29786

      SHA256

      d09d35209d9ce426d7a9708f9a6f86913587316a3e0ad077ad4bb576ca78ff8f

      SHA512

      b8db5bb8558546c1a1a0e447dbc7e2fae50517eabbfad3d54ae2cbcd3702cd8bce6b33b0be676aeccb0d531b444f9c12aac0763c8854d86eb7b83fdb797170a7

    • C:\Users\Admin\AppData\Local\Temp\HD_X.dat
      Filesize

      2.6MB

      MD5

      b7c63b026dbb0bff8b24203e1f78ef95

      SHA1

      364afe7afeb40c5289d46690dc9e4d97ca74f8ad

      SHA256

      2de34f89c19bd62325b83183c3f35500679652f67f5061fa1a4d0dbf21ec1ef6

      SHA512

      4627cfd4ffa0373372bcfa0859b657a42e3d3c9e431f37c3214d65b78ca2ad006da5ea28a35ac570f30acb44306d2bdc4aa411333951ab3e65215d629ea3d997

    • \Users\Admin\AppData\Local\Temp\N.exe
      Filesize

      377KB

      MD5

      4a36a48e58829c22381572b2040b6fe0

      SHA1

      f09d30e44ff7e3f20a5de307720f3ad148c6143b

      SHA256

      3de6c02f52a661b8f934f59541d0cf297bb489eb2155e346b63c7338e09aeaf8

      SHA512

      5d0ea398792f6b9eb3f188813c50b7f43929183b5733d2b595b2fd1c78722764fd15f62db1086b5c7edfb157661a6dcd544ddd80907ee7699dddbca1ef4022d0

    • \Users\Admin\AppData\Local\Temp\R.exe
      Filesize

      941KB

      MD5

      8dc3adf1c490211971c1e2325f1424d2

      SHA1

      4eec4a4e7cb97c5efa6c72e0731cd090c0c4adc5

      SHA256

      bc29f2022ab3b812e50c8681ff196f090c038b5ab51e37daffac4469a8c2eb2c

      SHA512

      ae92ea20b359849dcdba4808119b154e3af5ef3687ee09de1797610fe8c4d3eb9065b068074d35adddb4b225d17c619baff3944cb137ad196bcef7a6507f920d

    • \Windows\SysWOW64\259397932.txt
      Filesize

      899KB

      MD5

      505b011058907fda41a3c02d76f98f1e

      SHA1

      cffd2775c2aece94c6c09d95313608eb01f932d1

      SHA256

      b8b00db53bd7f3bb82d4fe1e3ac48325082c79051b6fd0ea2fad103a88b9ca1c

      SHA512

      02c4f1643f1b7150c4b2d339e4a3e6134ff1efcf796d42ccd88b65592f736b357981bba500f1745ca7a1cdd646974048cc34c252408e214ff017240ae3caca6f

    • \Windows\SysWOW64\Remote Data.exe
      Filesize

      43KB

      MD5

      51138beea3e2c21ec44d0932c71762a8

      SHA1

      8939cf35447b22dd2c6e6f443446acc1bf986d58

      SHA256

      5ad3c37e6f2b9db3ee8b5aeedc474645de90c66e3d95f8620c48102f1eba4124

      SHA512

      794f30fe452117ff2a26dc9d7086aaf82b639c2632ac2e381a81f5239caaec7c96922ba5d2d90bfd8d74f0a6cd4f79fbda63e14c6b779e5cf6834c13e4e45e7d

    • memory/2412-47-0x0000000010000000-0x00000000101B6000-memory.dmp
      Filesize

      1.7MB

    • memory/2412-44-0x0000000010000000-0x00000000101B6000-memory.dmp
      Filesize

      1.7MB

    • memory/2412-49-0x0000000010000000-0x00000000101B6000-memory.dmp
      Filesize

      1.7MB

    • memory/2548-43-0x0000000001040000-0x0000000001054000-memory.dmp
      Filesize

      80KB

    • memory/2572-18-0x0000000010000000-0x00000000101B6000-memory.dmp
      Filesize

      1.7MB

    • memory/2572-21-0x0000000010000000-0x00000000101B6000-memory.dmp
      Filesize

      1.7MB

    • memory/2572-20-0x0000000010000000-0x00000000101B6000-memory.dmp
      Filesize

      1.7MB