Overview

overview

10

Static

static

10

taskHostw.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    taskHostw.exe

  • Size

    1.1MB

  • Sample

    250123-s2svtatrav

  • MD5

    9acac2f1709100c4f471c5c4d9a6559a

  • SHA1

    b0de7b3d1340bb3edc9b67a6ae2be9d25f1e6172

  • SHA256

    e7fe25f706806440e04205b7fbe8c4dc0bef064327770b7ba7682917090509f5

  • SHA512

    196cea984b335b1cd03032d9002d799cb9bc85fb252f102510da8d3b14e0f02c15627f82c64cdc6ce086cf91e1960c0e3d6fc1bc539c657f1b0ff2e94276f1b8

  • SSDEEP

    24576:U2G/nvxW3Ww0tGyuDFfYdKDe17qJSZLQ+r/kDIdCCj:UbA30yFbaqerDPdF

Score
10/10
dcratdefense_evasiondiscoveryinfostealerpersistencerattrojan

Malware Config

Targets

    • Target

      taskHostw.exe

    • Size

      1.1MB

    • MD5

      9acac2f1709100c4f471c5c4d9a6559a

    • SHA1

      b0de7b3d1340bb3edc9b67a6ae2be9d25f1e6172

    • SHA256

      e7fe25f706806440e04205b7fbe8c4dc0bef064327770b7ba7682917090509f5

    • SHA512

      196cea984b335b1cd03032d9002d799cb9bc85fb252f102510da8d3b14e0f02c15627f82c64cdc6ce086cf91e1960c0e3d6fc1bc539c657f1b0ff2e94276f1b8

    • SSDEEP

      24576:U2G/nvxW3Ww0tGyuDFfYdKDe17qJSZLQ+r/kDIdCCj:UbA30yFbaqerDPdF

    Score
    10/10
    dcratdefense_evasiondiscoveryinfostealerpersistencerattrojan

    • DcRat

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

      ratinfostealerdcrat

    • Dcrat family

      dcrat

    • Modifies WinLogon for persistence

      persistence

    • Process spawned unexpected child process

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

    • UAC bypass

      defense_evasiontrojan

    • 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

    • Checks whether UAC is enabled

      defense_evasiontrojan

    • Drops autorun.inf file

      Malware can abuse Windows Autorun to spread further via attached volumes.

    behavioral1

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Replication Through Removable Media

1
T1091

Execution

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Persistence

Boot or Logon Autostart Execution

1
T1547

Winlogon Helper DLL

1
T1547.004

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Privilege Escalation

Abuse Elevation Control Mechanism

1
T1548

Bypass User Account Control

1
T1548.002

Boot or Logon Autostart Execution

1
T1547

Winlogon Helper DLL

1
T1547.004

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Defense Evasion

Abuse Elevation Control Mechanism

1
T1548

Bypass User Account Control

1
T1548.002

Impair Defenses

1
T1562

Disable or Modify Tools

1
T1562.001

Modify Registry

3
T1112

Credential Access

Discovery

Query Registry

2
T1012

System Information Discovery

3
T1082

System Location Discovery

1
T1614

System Language Discovery

1
T1614.001

Lateral Movement

Replication Through Removable Media

1
T1091

Collection

Command and Control

Exfiltration

Impact

Tasks