Resubmissions

16-01-2025 17:29

250116-v21lrs1ld1 10

General

  • Target

    Screenshot 2025-01-16 12.29.35 PM.png

  • Size

    1KB

  • Sample

    250116-v21lrs1ld1

  • MD5

    91f8a008169dc4a059bf343253285e7c

  • SHA1

    1a97ec136415449027d128becacd84fc812b8ba4

  • SHA256

    4e627536d59e08d49522b7e5fb957318643cf279991a94000e283f706eb16a85

  • SHA512

    8241ca5d1ac5091b5ea19ae9decc61e450542966791addad7ed92311160b534d829c036688c59adc49e89443b77d9a02ddaea4e3bcc18d458791ed1864d730b5

Malware Config

Targets

    • Target

      Screenshot 2025-01-16 12.29.35 PM.png

    • Size

      1KB

    • MD5

      91f8a008169dc4a059bf343253285e7c

    • SHA1

      1a97ec136415449027d128becacd84fc812b8ba4

    • SHA256

      4e627536d59e08d49522b7e5fb957318643cf279991a94000e283f706eb16a85

    • SHA512

      8241ca5d1ac5091b5ea19ae9decc61e450542966791addad7ed92311160b534d829c036688c59adc49e89443b77d9a02ddaea4e3bcc18d458791ed1864d730b5

    • Dharma

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

    • Dharma family

    • Suspicious use of NtCreateUserProcessOtherParentProcess

    • Deletes shadow copies

      Ransomware often targets backup files to inhibit system recovery.

    • Renames multiple (600) files with added filename extension

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

    • Downloads MZ/PE file

    • Drops file in Drivers directory

    • Modifies RDP port number used by Windows

    • Office macro that triggers on suspicious action

      Office document macro which triggers in special circumstances - often malicious.

    • Sets service image path in registry

    • Checks BIOS information in registry

      BIOS information is often read in order to detect sandboxing environments.

    • Checks computer location settings

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

    • Credentials from Password Stores: Windows Credential Manager

      Suspicious access to Credentials History.

    • Deletes itself

    • Drops startup file

    • Event Triggered Execution: Component Object Model Hijacking

      Adversaries may establish persistence by executing malicious content triggered by hijacked references to Component Object Model (COM) objects.

    • Executes dropped EXE

    • Impair Defenses: Safe Mode Boot

    • Loads dropped DLL

    • Obfuscated with Agile.Net obfuscator

      Detects use of the Agile.Net commercial obfuscator, which is capable of entity renaming and control flow obfuscation.

    • 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

    • Checks installed software on the system

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

    • Drops desktop.ini file(s)

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    • Legitimate hosting services abused for malware hosting/C2

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks