Resubmissions

21-06-2024 06:37

240621-hdgsjazdrg 3

21-06-2024 06:35

240621-hcea1stfpr 3

21-06-2024 06:33

240621-hbbthazdpg 3

21-06-2024 06:30

240621-g9gxqstflq 3

21-06-2024 06:25

240621-g6yfbatfjq 5

21-06-2024 06:06

240621-gt28qszbrg 10

21-06-2024 05:55

240621-gmrtestdjn 10

General

  • Target

    steam_pfp_1.jfif

  • Size

    5KB

  • Sample

    240621-gmrtestdjn

  • MD5

    db49c318451e36edef4137e52013da0b

  • SHA1

    672212d918f7a67e9667efa50742d30f86663cf2

  • SHA256

    dcf6bfa9392179f23ce11d1fe78325845bf0d1a921b720ef3cd7878020623e42

  • SHA512

    5688a951972310da828bae076187e111adbd7670a8664a40ab6c26ffd4a85243a7c6a22c5482e889b8d058a0826c0654fd855035393a2ca747c4d5f2700f2e95

  • SSDEEP

    96:VWLxsrCRz/hrzk1aCJCUvY6gkBMmkSM8AkxudbpXSG1i:ETRzJ8DJRf3RxJYxpCyi

Malware Config

Targets

    • Target

      steam_pfp_1.jfif

    • Size

      5KB

    • MD5

      db49c318451e36edef4137e52013da0b

    • SHA1

      672212d918f7a67e9667efa50742d30f86663cf2

    • SHA256

      dcf6bfa9392179f23ce11d1fe78325845bf0d1a921b720ef3cd7878020623e42

    • SHA512

      5688a951972310da828bae076187e111adbd7670a8664a40ab6c26ffd4a85243a7c6a22c5482e889b8d058a0826c0654fd855035393a2ca747c4d5f2700f2e95

    • SSDEEP

      96:VWLxsrCRz/hrzk1aCJCUvY6gkBMmkSM8AkxudbpXSG1i:ETRzJ8DJRf3RxJYxpCyi

    • Dharma

      Dharma is a ransomware that uses security software installation to hide malicious activities.

    • Deletes shadow copies

      Ransomware often targets backup files to inhibit system recovery.

    • Renames multiple (453) files with added filename extension

      This suggests ransomware activity of encrypting all the files on the system.

    • Downloads MZ/PE file

    • Deletes itself

    • Drops startup file

    • Executes dropped EXE

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • Adds Run key to start application

    • Drops desktop.ini file(s)

    • Legitimate hosting services abused for malware hosting/C2

    • Drops file in System32 directory

MITRE ATT&CK Matrix ATT&CK v13

Execution

Windows Management Instrumentation

1
T1047

Persistence

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Defense Evasion

Indicator Removal

2
T1070

File Deletion

2
T1070.004

Modify Registry

1
T1112

Direct Volume Access

1
T1006

Credential Access

Unsecured Credentials

1
T1552

Credentials In Files

1
T1552.001

Discovery

System Information Discovery

3
T1082

Query Registry

3
T1012

Collection

Data from Local System

1
T1005

Command and Control

Web Service

1
T1102

Impact

Inhibit System Recovery

2
T1490

Tasks