Analysis

  • max time kernel
    140s
  • max time network
    119s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    04/02/2024, 20:28

General

  • Target

    90146ee8c911d1ba806bb51c9a6e6d62.exe

  • Size

    104KB

  • MD5

    90146ee8c911d1ba806bb51c9a6e6d62

  • SHA1

    85f7a2631c58da5c85139e59fb225526438acc62

  • SHA256

    bdb613c87738d5f8915b3581857f0bd5a7f231e281a2f094f6679c8f7acb53f8

  • SHA512

    9abd90244984dd013519e3e90abbba2750f8a8eec19d73b22a387b7ea397ec0c49769686788330a2bbc0530e39c79566b5b57a0c2cae36b6bc0186329fd3083f

  • SSDEEP

    3072:EkLlVIkXqjO5QM4f3oegG8bY2NvdVaBWsjlZf3:Jb6BM4f3DfkABWqZ

Malware Config

Signatures

  • Loads dropped DLL 5 IoCs
  • UPX packed file 2 IoCs

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

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Installs/modifies Browser Helper Object 2 TTPs 1 IoCs

    BHOs are DLL modules which act as plugins for Internet Explorer.

  • Drops file in System32 directory 2 IoCs
  • Modifies registry class 6 IoCs
  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of WriteProcessMemory 7 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\90146ee8c911d1ba806bb51c9a6e6d62.exe
    "C:\Users\Admin\AppData\Local\Temp\90146ee8c911d1ba806bb51c9a6e6d62.exe"
    1⤵
    • Loads dropped DLL
    • Adds Run key to start application
    • Installs/modifies Browser Helper Object
    • Drops file in System32 directory
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1872
    • C:\Windows\SysWOW64\rundll32.exe
      C:\Windows\system32\rundll32.exe C:\Windows\system32\ojfmqrd.dll,fxotoj
      2⤵
      • Loads dropped DLL
      PID:2748

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Windows\SysWOW64\ojfmqrd.dll

          Filesize

          92KB

          MD5

          56d4b45a20fc496519c6269291628d6b

          SHA1

          cb2632b55a817049265a61c64c006e2fdf78559c

          SHA256

          5f1d0884dbadc9ef0924258721dd661106356e4b96217e578457415db34ad39a

          SHA512

          daf38cf0725730940900944b49c7c7e202685698b9c6a9bfe46c8381986aa58d4b51497bdea00d91081b80d9618806ba5bf681b1d03c796fea9a07970806ee3e

        • \Windows\SysWOW64\ojfmqrd.dll

          Filesize

          64KB

          MD5

          be8c7a21cd849265572918d8b9f0102d

          SHA1

          bfca95a96e68deb3072d4b19c2fbb63cdc527dac

          SHA256

          1e20adb2bf88af727b6fd397013aeaae0034abf2bed2f91371f0f1d8f0a9d0ee

          SHA512

          b36998675a26eecf8a28ac76ad0956462f358a63c9e703d4d00b8699b9e6884c4ae1fb14c19616db71ca7d9a91d77be7168edeaabe987e60a20c7bf36dfee4f5

        • \Windows\SysWOW64\omcnjxg.dll

          Filesize

          69KB

          MD5

          278dd526adb0537839e07c8c5df1518e

          SHA1

          a255c19e03a416610c7e0384a828527dc3e346e6

          SHA256

          d67c0b08fa4c51134835bf89efa84c2260260b202b76d5f57c2e02eb6265e4a0

          SHA512

          cc60253675ca6e6f9b1cb1201c3e96da94a3c6232b873b1f8f8a1824a5708424aede85b1d636c47dda90cc20dcb5db948538efb197f42ac750729d36f5c6e451

        • memory/1872-20-0x0000000010000000-0x0000000010019000-memory.dmp

          Filesize

          100KB

        • memory/1872-5-0x0000000010000000-0x0000000010019000-memory.dmp

          Filesize

          100KB

        • memory/1872-14-0x0000000000400000-0x0000000000433000-memory.dmp

          Filesize

          204KB

        • memory/1872-4-0x0000000000400000-0x0000000000433000-memory.dmp

          Filesize

          204KB

        • memory/1872-31-0x0000000010000000-0x0000000010019000-memory.dmp

          Filesize

          100KB

        • memory/2748-11-0x0000000010000000-0x000000001001E000-memory.dmp

          Filesize

          120KB

        • memory/2748-12-0x0000000010000000-0x000000001001E000-memory.dmp

          Filesize

          120KB

        • memory/2748-13-0x0000000010000000-0x000000001001E000-memory.dmp

          Filesize

          120KB

        • memory/2748-21-0x0000000010000000-0x000000001001E000-memory.dmp

          Filesize

          120KB

        • memory/2748-22-0x0000000010000000-0x000000001001E000-memory.dmp

          Filesize

          120KB