Overview

overview

10

Static

static

10

HEUR-Backd...f5.exe

windows7-x64

10

HEUR-Backd...f5.exe

windows10-2004-x64

10

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General

  • Target

    HEUR-Backdoor.MSIL.LightStone.gen-b80644803f5.exe

  • Size

    1.4MB

  • Sample

    230612-l7x86abc88

  • MD5

    2b66b04d81792b8391fb9a0a8b1cadcb

  • SHA1

    aa2407d93eb512093bb191d19d1b4ef474dc2eb8

  • SHA256

    b80644803f578f33e59aa51ebec2e1c6726afb4447344d8e299216797bde2747

  • SHA512

    806c651ba2f146727d2b24225263cbec711ada7cba804c5571f6e94f9c14d328ce1afcf23fc95550f86864594453e0540f9b598b83acb53cbc33d9353755f8ad

  • SSDEEP

    24576:u2G/nvxW3WieCW2efqdPsK8Vx2mxdClw3HQ0H+4R:ubA3jIqJqi+O0Qdu

Score
10/10
dcratinfostealerpersistencerat

Malware Config

Targets

    • Target

      HEUR-Backdoor.MSIL.LightStone.gen-b80644803f5.exe

    • Size

      1.4MB

    • MD5

      2b66b04d81792b8391fb9a0a8b1cadcb

    • SHA1

      aa2407d93eb512093bb191d19d1b4ef474dc2eb8

    • SHA256

      b80644803f578f33e59aa51ebec2e1c6726afb4447344d8e299216797bde2747

    • SHA512

      806c651ba2f146727d2b24225263cbec711ada7cba804c5571f6e94f9c14d328ce1afcf23fc95550f86864594453e0540f9b598b83acb53cbc33d9353755f8ad

    • SSDEEP

      24576:u2G/nvxW3WieCW2efqdPsK8Vx2mxdClw3HQ0H+4R:ubA3jIqJqi+O0Qdu

    Score
    10/10
    dcratinfostealerpersistencerat

    • DcRat

      DarkCrystal(DC) is a new .NET RAT active since June 2019 capable of loading additional plugins.

      ratinfostealerdcrat

    • Modifies WinLogon for persistence

      persistence

    • Process spawned unexpected child process

      This typically indicates the parent process was compromised via an exploit or macro.

    • DCRat payload

      Detects payload of DCRat, commonly dropped by NSIS installers.

      rat

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Adds Run key to start application

      persistence

    • Drops file in System32 directory

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1
T1053

Persistence

Winlogon Helper DLL

1
T1004

Registry Run Keys / Startup Folder

1
T1060

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Defense Evasion

Modify Registry

2
T1112

Credential Access

Discovery

Query Registry

2
T1012

System Information Discovery

2
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Tasks