Analysis

  • max time kernel
    141s
  • max time network
    123s
  • platform
    windows7_x64
  • resource
    win7-20240611-en
  • resource tags

    arch:x64arch:x86image:win7-20240611-enlocale:en-usos:windows7-x64system
  • submitted
    14-06-2024 04:57

General

  • Target

    ddba039d2e645602626e09ac9b6a305edadd56464966419d09f33d3b0a793d95.exe

  • Size

    15KB

  • MD5

    7d3ce280b5a48f346dbcb0ece9df73c0

  • SHA1

    8eed6486ffe3acdae7140e9b57ee190cab80698d

  • SHA256

    ddba039d2e645602626e09ac9b6a305edadd56464966419d09f33d3b0a793d95

  • SHA512

    8a29c57f3c3c595a75e88a712b0c1aa6d344a42b9edc4c48ff33de968260abcb8b89818179ce4c62c511638407eb744dd21521b1916be6a02ba212282e1a834d

  • SSDEEP

    384:IO3qdXlIQV0YXd45xuYiMcRWnPbeVGWLD:IO3EVdV0YXd4DuicNV3f

Score
9/10

Malware Config

Signatures

  • Detects Windows executables referencing non-Windows User-Agents 6 IoCs
  • UPX dump on OEP (original entry point) 8 IoCs
  • Sets file to hidden 1 TTPs 1 IoCs

    Modifies file attributes to stop it showing in Explorer etc.

  • Deletes itself 1 IoCs
  • Executes dropped EXE 1 IoCs
  • UPX packed file 8 IoCs

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

  • Drops file in Windows directory 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs
  • Views/modifies file attributes 1 TTPs 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ddba039d2e645602626e09ac9b6a305edadd56464966419d09f33d3b0a793d95.exe
    "C:\Users\Admin\AppData\Local\Temp\ddba039d2e645602626e09ac9b6a305edadd56464966419d09f33d3b0a793d95.exe"
    1⤵
    • Drops file in Windows directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1440
    • C:\Windows\SysWOW64\attrib.exe
      attrib +a +s +h +r C:\Windows\Debug\rwmhost.exe
      2⤵
      • Sets file to hidden
      • Drops file in Windows directory
      • Views/modifies file attributes
      PID:2184
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\DDBA03~1.EXE > nul
      2⤵
      • Deletes itself
      PID:2680
  • C:\Windows\Debug\rwmhost.exe
    C:\Windows\Debug\rwmhost.exe
    1⤵
    • Executes dropped EXE
    PID:1880

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Windows\Debug\rwmhost.exe

    Filesize

    15KB

    MD5

    db20c7a9550f389bbba29296b651f4bd

    SHA1

    885a216a674fff5050fd4a23ac989e634382f0c4

    SHA256

    21f5c765679c59ccd0ecd04ab4a6cf15ac7860ca87ec556145cd813479f7f461

    SHA512

    bfd85c2409a0326ca20e625dedea1388d3c94df0625a90a2efaf4e170482b57896a3f647a9d4af41e9a73a4171870b91514a3843b671af8c806876126dd42c89

  • memory/1440-0-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/1880-5-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/1880-7-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/1880-10-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/1880-13-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/1880-16-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/1880-19-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB