Analysis

  • max time kernel
    58s
  • max time network
    118s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    14-12-2020 15:07

General

  • Target

    722f9bda715de78bb7f5d122d39995d5.exe

  • Size

    6.5MB

  • MD5

    722f9bda715de78bb7f5d122d39995d5

  • SHA1

    7ab30073574a82ebe0f4dbab4f29a6b44322a5f9

  • SHA256

    f4626c79c2ce687670a7673e141f0cab6638e90b646f83f52da9333f8047355c

  • SHA512

    90e2db1929e9d023052a57804922f62fedef13590ddcfe8171dc2cdbb3aaa5ee16dfe7524fd025a31e1652c0eec89320273daaca081dd9fdb490b7585687bcf7

Malware Config

Signatures

  • xmrig

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

  • XMRig Miner Payload 2 IoCs
  • UPX packed file 105 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
  • 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 1312 IoCs
  • Program crash 1 IoCs
  • Modifies Internet Explorer start page 1 TTPs 4 IoCs
  • Modifies system certificate store 2 TTPs 10 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\722f9bda715de78bb7f5d122d39995d5.exe
    "C:\Users\Admin\AppData\Local\Temp\722f9bda715de78bb7f5d122d39995d5.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:4716
    • C:\Windows\system32\WerFault.exe
      C:\Windows\system32\WerFault.exe -u -p 4716 -s 1836
      2⤵
      • Program crash
      PID:4420

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

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/4716-2-0x0000000000400000-0x00000000010B6000-memory.dmp
    Filesize

    12.7MB

  • memory/4716-3-0x0000000000400000-0x00000000010B6000-memory.dmp
    Filesize

    12.7MB

  • memory/4716-6-0x0000000000180000-0x00000000001C0000-memory.dmp
    Filesize

    256KB

  • memory/4716-7-0x00000000001C0000-0x00000000001E2000-memory.dmp
    Filesize

    136KB

  • memory/4716-8-0x00000000001F0000-0x0000000000200000-memory.dmp
    Filesize

    64KB