Analysis

  • max time kernel
    122s
  • max time network
    128s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    14-12-2020 14:26

General

  • Target

    44b96558fe90d7e3c1a8201bcfe0d585.exe

  • Size

    6.1MB

  • MD5

    44b96558fe90d7e3c1a8201bcfe0d585

  • SHA1

    115723a4f7e48b934f10cceb3bd64956ef378042

  • SHA256

    3f01646754d950e5cf3e901519365123608abb2a93e9bf24aced47b5df70852a

  • SHA512

    526f4bf9f347d3914f4a4439be7a82a82f0d2d15350be0fdff979505e6cd1f828e322ecd2e3828c0ca5bb6a5281a462d0743f8e37120a9c6b64ef49e5c4fcfea

Malware Config

Signatures

  • xmrig

    XMRig is a high performance, open source, cross platform CPU/GPU miner.

  • XMRig Miner Payload 4 IoCs
  • UPX packed file 102 IoCs

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

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Drops desktop.ini file(s) 2 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Drops autorun.inf file 1 TTPs

    Malware can abuse Windows Autorun to spread further via attached volumes.

  • Drops file in System32 directory 1 IoCs
  • Drops file in Program Files directory 1543 IoCs
  • Modifies Internet Explorer start page 1 TTPs 1 IoCs
  • Modifies system certificate store 2 TTPs 18 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\44b96558fe90d7e3c1a8201bcfe0d585.exe
    "C:\Users\Admin\AppData\Local\Temp\44b96558fe90d7e3c1a8201bcfe0d585.exe"
    1⤵
    • Adds Run key to start application
    • Drops desktop.ini file(s)
    • Drops file in System32 directory
    • Drops file in Program Files directory
    • Modifies Internet Explorer start page
    • Modifies system certificate store
    • Suspicious use of AdjustPrivilegeToken
    PID:1972

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Replication Through Removable Media

1
T1091

Persistence

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Modify Registry

3
T1112

Install Root Certificate

1
T1130

Lateral Movement

Replication Through Removable Media

1
T1091

Command and Control

Web Service

1
T1102

Replay Monitor

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Downloads

  • memory/1972-2-0x0000000000400000-0x00000000010B6000-memory.dmp
    Filesize

    12.7MB

  • memory/1972-3-0x0000000000400000-0x00000000010B6000-memory.dmp
    Filesize

    12.7MB

  • memory/1972-4-0x0000000000400000-0x00000000010B6000-memory.dmp
    Filesize

    12.7MB

  • memory/1972-5-0x0000000000400000-0x00000000010B6000-memory.dmp
    Filesize

    12.7MB

  • memory/1972-6-0x00000000002F0000-0x0000000000330000-memory.dmp
    Filesize

    256KB

  • memory/1972-7-0x0000000000330000-0x0000000000352000-memory.dmp
    Filesize

    136KB

  • memory/1972-8-0x0000000000360000-0x0000000000370000-memory.dmp
    Filesize

    64KB

  • memory/1972-9-0x0000000000370000-0x0000000000372000-memory.dmp
    Filesize

    8KB

  • memory/1972-10-0x0000000000380000-0x0000000000390000-memory.dmp
    Filesize

    64KB

  • memory/1972-11-0x0000000000390000-0x00000000003D0000-memory.dmp
    Filesize

    256KB

  • memory/1972-12-0x00000000003D0000-0x00000000003F2000-memory.dmp
    Filesize

    136KB