Analysis

  • max time kernel
    62s
  • max time network
    113s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    14-12-2020 14:12

General

  • Target

    2fe748de2323282cb118478294b0ff78.exe

  • Size

    6.2MB

  • MD5

    2fe748de2323282cb118478294b0ff78

  • SHA1

    76dfd81a0406f6c9b66969d59f18af73638f4870

  • SHA256

    d571512705deeb00437bb16a09b8007389ddd158ffe2beb08fad457a412fa7bc

  • SHA512

    22422a6d4b9e90bf5f369f14afe0ed4ff648ba284dfb3004af11a973ffa2e5542451c44878d4b2f0c5388e5935167d06cab17c3ea25911d292fd477ba658f898

Malware Config

Signatures

  • xmrig

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

  • XMRig Miner Payload 2 IoCs
  • UPX packed file 98 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 753 IoCs
  • Program crash 1 IoCs
  • Modifies Internet Explorer start page 1 TTPs 6 IoCs
  • Modifies system certificate store 2 TTPs 10 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2fe748de2323282cb118478294b0ff78.exe
    "C:\Users\Admin\AppData\Local\Temp\2fe748de2323282cb118478294b0ff78.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:576
    • C:\Windows\system32\WerFault.exe
      C:\Windows\system32\WerFault.exe -u -p 576 -s 1928
      2⤵
      • Program crash
      PID:1532

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/576-2-0x0000000000400000-0x00000000010B6000-memory.dmp
    Filesize

    12.7MB

  • memory/576-3-0x0000000000400000-0x00000000010B6000-memory.dmp
    Filesize

    12.7MB

  • memory/576-6-0x0000000000180000-0x00000000001C0000-memory.dmp
    Filesize

    256KB

  • memory/576-7-0x00000000001C0000-0x00000000001E2000-memory.dmp
    Filesize

    136KB

  • memory/576-8-0x00000000001F0000-0x0000000000200000-memory.dmp
    Filesize

    64KB