Overview

overview

8

Static

static

b94ff8c760...cd.exe

windows7-x64

8

b94ff8c760...cd.exe

windows10-2004-x64

1

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General

  • Target

    b94ff8c760bfb03fec88b884e49803a73ad3af299e6cb6c6ea6d41318f80c3cd

  • Size

    401KB

  • Sample

    221203-hbrjyscd33

  • MD5

    3621f8096cb59d03b8cfd18c865f0820

  • SHA1

    d29be87089c2d3140ad210e56fd70c463036e543

  • SHA256

    b94ff8c760bfb03fec88b884e49803a73ad3af299e6cb6c6ea6d41318f80c3cd

  • SHA512

    4882c0fc6915a263786edbb5ac17679a086e1e3895aa4038d31e57860b38085936a91e7f3ad05ddbe364415e9f245f9bf3ef7f219a7f52759f686ad2f64c833b

  • SSDEEP

    12288:oj7F1MU7UW/jP8EYFzr+ayqWMNcG6rzCD6W1K3DnsKp/v7np:oj7F1BLMB+rG6jW4DsKpt

Score
8/10
bootkitdiscoverypersistenceupx

Malware Config

Targets

    • Target

      b94ff8c760bfb03fec88b884e49803a73ad3af299e6cb6c6ea6d41318f80c3cd

    • Size

      401KB

    • MD5

      3621f8096cb59d03b8cfd18c865f0820

    • SHA1

      d29be87089c2d3140ad210e56fd70c463036e543

    • SHA256

      b94ff8c760bfb03fec88b884e49803a73ad3af299e6cb6c6ea6d41318f80c3cd

    • SHA512

      4882c0fc6915a263786edbb5ac17679a086e1e3895aa4038d31e57860b38085936a91e7f3ad05ddbe364415e9f245f9bf3ef7f219a7f52759f686ad2f64c833b

    • SSDEEP

      12288:oj7F1MU7UW/jP8EYFzr+ayqWMNcG6rzCD6W1K3DnsKp/v7np:oj7F1BLMB+rG6jW4DsKpt

    Score
    8/10
    bootkitdiscoverypersistenceupx

    • Executes dropped EXE

    • UPX packed file

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

      upx

    • Deletes itself

    • Loads dropped DLL

    • Adds Run key to start application

      persistence

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

      discovery

    • Writes to the Master Boot Record (MBR)

      Bootkits write to the MBR to gain persistence at a level below the operating system.

      bootkitpersistence

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1
T1060

Bootkit

1
T1067

Privilege Escalation

Defense Evasion

Modify Registry

2
T1112

Credential Access

Discovery

Query Registry

1
T1012

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Tasks