Analysis

  • max time kernel
    93s
  • max time network
    126s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    11-04-2024 11:44

General

  • Target

    2024-04-11_c39485a1c3300463348eaa752784a506_karagany_mafia_ramnit.exe

  • Size

    241KB

  • MD5

    c39485a1c3300463348eaa752784a506

  • SHA1

    e6c2ac85acc16434f818c065de1e5811098bc3b8

  • SHA256

    21f3bd2c7515bfeef02b0295f97d0c68bf296c6004b88bba94d2b57ced08e95f

  • SHA512

    10df37b93ba7270db64c1bf69ef70a9428d6e38703a81e5e667da610dc6c2ac896667ef4adad3aa2a9c7dc511b7b0297f61feaef4ef942d9a1d344410bb16983

  • SSDEEP

    3072:dRu4T8pmpXyF/hpBE5fgq09o6GwuDpW2mmtRVQkIr05+u4dC5ehyreqv/kmDfE5T:dRu4TXyF/wpFJIy4hhyr2OMBEclDwg

Malware Config

Signatures

  • Ramnit

    Ramnit is a versatile family that holds viruses, worms, and Trojans.

  • UPX dump on OEP (original entry point) 2 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • UPX packed file 1 IoCs

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

  • Program crash 1 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-04-11_c39485a1c3300463348eaa752784a506_karagany_mafia_ramnit.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-04-11_c39485a1c3300463348eaa752784a506_karagany_mafia_ramnit.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1784
    • C:\Users\Admin\AppData\Local\Temp\2024-04-11_c39485a1c3300463348eaa752784a506_karagany_mafia_ramnitmgr.exe
      C:\Users\Admin\AppData\Local\Temp\2024-04-11_c39485a1c3300463348eaa752784a506_karagany_mafia_ramnitmgr.exe
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      PID:648
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 648 -s 540
        3⤵
        • Program crash
        PID:3632
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 648 -ip 648
    1⤵
      PID:3724

    Network

    MITRE ATT&CK Matrix

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\2024-04-11_c39485a1c3300463348eaa752784a506_karagany_mafia_ramnitmgr.exe

      Filesize

      106KB

      MD5

      fe36fb1073e6f8fa14d7250501a29aaf

      SHA1

      6c7e01278362797dabcff3e666b68227cb9af10f

      SHA256

      f34e5af97ccb3574f7d5343246138daf979bfd1f9c37590e9a41f6420ddb3bb6

      SHA512

      8584c008c5780352f634c37b7f46543a26280b57577b675f6e72185bfc1d95f771d210d799d704eceaba509ebfd2796fb43829495d5b2a568c741ad2d44f882f

    • C:\Users\Admin\AppData\Local\Temp\~TM4769.tmp

      Filesize

      1.6MB

      MD5

      4f3387277ccbd6d1f21ac5c07fe4ca68

      SHA1

      e16506f662dc92023bf82def1d621497c8ab5890

      SHA256

      767a3fc4a7a6818cdc3f0b99aaa95db694f6bcde719d2057a88b3d4df3d74fac

      SHA512

      9da199ac69e3c0d4e0c6307e0ab8178f12cc25cb2f14c3511f6b64e6e60a925c860f3263cb38353a97b55a71ef4d27f8cb7fa3cfc08e7c1a349fd8d209dfa219

    • memory/648-7-0x0000000000400000-0x000000000042A000-memory.dmp

      Filesize

      168KB

    • memory/648-10-0x0000000002180000-0x00000000021AA000-memory.dmp

      Filesize

      168KB

    • memory/648-11-0x0000000077B62000-0x0000000077B63000-memory.dmp

      Filesize

      4KB

    • memory/648-12-0x0000000077B62000-0x0000000077B64000-memory.dmp

      Filesize

      8KB

    • memory/1784-0-0x0000000000730000-0x0000000000773000-memory.dmp

      Filesize

      268KB

    • memory/1784-5-0x0000000000730000-0x0000000000773000-memory.dmp

      Filesize

      268KB