General

  • Target

    c787c9a5f407a656478efc835f1a0f8f738030bf26ced.exe

  • Size

    772KB

  • Sample

    220915-pp2emsdaf3

  • MD5

    7ed5b2dec02ef2ddc967fa9ca0dd8d2f

  • SHA1

    0f471be520c5c78a0a40a4026237e04c366a3110

  • SHA256

    c787c9a5f407a656478efc835f1a0f8f738030bf26cedbd4748cb7b18ed2ea3e

  • SHA512

    9e8df81da00ccd9345bf3dfa2f01906830ca718875c0e535498eed6a73db62a1ec3149ea611d1f60c1c144a86d6f94482b985a9e7dbdd23b5d8f1b43e347f09e

  • SSDEEP

    12288:lToPWBv/cpGrU3y4dDG+A/rd/X78/SLKXt22Q2pnkhA/rd/X78vm:lTbBv5rUFDGr/rBXIxtrQm/rBXIe

Malware Config

Extracted

Family

limerat

Attributes
  • aes_key

    beodz

  • antivm

    false

  • c2_url

    https://pastebin.com/raw/PEKpeQWU

  • delay

    3

  • download_payload

    false

  • install

    true

  • install_name

    winlogon.exe

  • main_folder

    AppData

  • pin_spread

    false

  • sub_folder

    \AppData\Windows Protector\

  • usb_spread

    false

Targets

    • Target

      c787c9a5f407a656478efc835f1a0f8f738030bf26ced.exe

    • Size

      772KB

    • MD5

      7ed5b2dec02ef2ddc967fa9ca0dd8d2f

    • SHA1

      0f471be520c5c78a0a40a4026237e04c366a3110

    • SHA256

      c787c9a5f407a656478efc835f1a0f8f738030bf26cedbd4748cb7b18ed2ea3e

    • SHA512

      9e8df81da00ccd9345bf3dfa2f01906830ca718875c0e535498eed6a73db62a1ec3149ea611d1f60c1c144a86d6f94482b985a9e7dbdd23b5d8f1b43e347f09e

    • SSDEEP

      12288:lToPWBv/cpGrU3y4dDG+A/rd/X78/SLKXt22Q2pnkhA/rd/X78vm:lTbBv5rUFDGr/rBXIxtrQm/rBXIe

    • LimeRAT

      Simple yet powerful RAT for Windows machines written in .NET.

    • xmrig

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

    • XMRig Miner payload

    • Blocklisted process makes network request

    • Disables Task Manager via registry modification

    • Downloads MZ/PE file

    • Executes dropped EXE

    • Sets file to hidden

      Modifies file attributes to stop it showing in Explorer etc.

    • UPX packed file

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

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Drops startup file

    • Loads dropped DLL

    • Adds Run key to start application

    • Legitimate hosting services abused for malware hosting/C2

MITRE ATT&CK Enterprise v6

Tasks