Analysis

  • max time kernel
    58s
  • max time network
    114s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    14-12-2020 14:21

General

  • Target

    3e7a0ab03d6d00c0ffee61cc7b8056da.exe

  • Size

    6.2MB

  • MD5

    3e7a0ab03d6d00c0ffee61cc7b8056da

  • SHA1

    22c39dda6c43e5c98039907ab18fcf145f4f9bf8

  • SHA256

    f2011f52510614fde9a625abad281f404f175deecb198c41ed7d3314ad4c4e9d

  • SHA512

    dccdc81deb0b0d9695b7364b753e1fa67d4ae34d49bc75f0df1d348660b05a871d2e8e251d2e7e894a8b0f91c41ff42465614d3ac45d7cf0bb774299e30bc668

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
  • 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 1534 IoCs
  • Program crash 1 IoCs
  • Modifies Internet Explorer start page 1 TTPs 3 IoCs
  • Modifies system certificate store 2 TTPs 13 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\3e7a0ab03d6d00c0ffee61cc7b8056da.exe
    "C:\Users\Admin\AppData\Local\Temp\3e7a0ab03d6d00c0ffee61cc7b8056da.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:3264
    • C:\Windows\system32\WerFault.exe
      C:\Windows\system32\WerFault.exe -u -p 3264 -s 1492
      2⤵
      • Program crash
      PID:3872

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

Loading Replay Monitor...

Downloads

  • memory/3264-2-0x0000000000400000-0x00000000010B6000-memory.dmp
    Filesize

    12.7MB

  • memory/3264-3-0x0000000000400000-0x00000000010B6000-memory.dmp
    Filesize

    12.7MB

  • memory/3264-6-0x0000000000180000-0x0000000000190000-memory.dmp
    Filesize

    64KB

  • memory/3264-7-0x0000000000190000-0x0000000000192000-memory.dmp
    Filesize

    8KB

  • memory/3264-8-0x00000000001A0000-0x00000000001E0000-memory.dmp
    Filesize

    256KB

  • memory/3264-9-0x00000000001E0000-0x00000000001F0000-memory.dmp
    Filesize

    64KB

  • memory/3264-10-0x00000000001F0000-0x0000000000200000-memory.dmp
    Filesize

    64KB