Analysis

  • max time kernel
    133s
  • max time network
    136s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    14-12-2020 13:40

General

  • Target

    127a3945b91210655c34d3f2f003c1c2.exe

  • Size

    6.2MB

  • MD5

    127a3945b91210655c34d3f2f003c1c2

  • SHA1

    926428a635b0a95c472842159e0645f8711fd79f

  • SHA256

    6a38aaa087a54012eded0c1ba88555d28a9c61cfbfaab3bfc59ce42c1f7fec4f

  • SHA512

    452062bd277594894347638b87905e7d064054dd95454e61ea1bf7a4e02f5c24c23bfb389e20d53af1952325b3090a1b2cb8b829a993f09cc4681bdae820d052

Score
10/10

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.

  • 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 Program Files directory 1324 IoCs
  • Program crash 1 IoCs
  • Modifies Internet Explorer start page 1 TTPs 2 IoCs
  • Modifies system certificate store 2 TTPs 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\127a3945b91210655c34d3f2f003c1c2.exe
    "C:\Users\Admin\AppData\Local\Temp\127a3945b91210655c34d3f2f003c1c2.exe"
    1⤵
    • Drops desktop.ini file(s)
    • Drops file in Program Files directory
    • Modifies Internet Explorer start page
    • Modifies system certificate store
    • Suspicious use of AdjustPrivilegeToken
    PID:732
    • C:\Windows\system32\WerFault.exe
      C:\Windows\system32\WerFault.exe -u -p 732 -s 1440
      2⤵
      • Program crash
      PID:744

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Replication Through Removable Media

1
T1091

Defense Evasion

Modify Registry

2
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/732-2-0x0000000000400000-0x00000000010B6000-memory.dmp
    Filesize

    12.7MB

  • memory/732-3-0x0000000000400000-0x00000000010B6000-memory.dmp
    Filesize

    12.7MB

  • memory/732-6-0x00000000000B0000-0x00000000000C0000-memory.dmp
    Filesize

    64KB

  • memory/732-7-0x00000000000C0000-0x00000000000D0000-memory.dmp
    Filesize

    64KB

  • memory/732-8-0x00000000000D0000-0x00000000000D2000-memory.dmp
    Filesize

    8KB

  • memory/732-9-0x00000000001A4000-0x00000000001A5000-memory.dmp
    Filesize

    4KB

  • memory/732-11-0x00000000001D0000-0x00000000001F2000-memory.dmp
    Filesize

    136KB