General

  • Target

    BatToExe.bat

  • Size

    1KB

  • Sample

    250201-ez1kzstqgr

  • MD5

    58f9dfaa6c2a6f23011b7c4bc7075509

  • SHA1

    5c0bb2e0a72d119215eadaddbdf4f5ac56a1f4b9

  • SHA256

    4c7a69fb154f7ee59673b530b305a95601ffab15b2c50bb68187a687cca15da6

  • SHA512

    f022f8b2eba4d9f831a44880db630f0de74e17326c72bf8550c0483f6ac145699fba693bc074d125784b4f7af4d2f40739b036dac8e7f418a5e3667d9b655f4c

Malware Config

Targets

    • Target

      BatToExe.bat

    • Size

      1KB

    • MD5

      58f9dfaa6c2a6f23011b7c4bc7075509

    • SHA1

      5c0bb2e0a72d119215eadaddbdf4f5ac56a1f4b9

    • SHA256

      4c7a69fb154f7ee59673b530b305a95601ffab15b2c50bb68187a687cca15da6

    • SHA512

      f022f8b2eba4d9f831a44880db630f0de74e17326c72bf8550c0483f6ac145699fba693bc074d125784b4f7af4d2f40739b036dac8e7f418a5e3667d9b655f4c

    • Dharma

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

    • Dharma family

    • Deletes shadow copies

      Ransomware often targets backup files to inhibit system recovery.

    • Renames multiple (527) files with added filename extension

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

    • Downloads MZ/PE file

    • 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

    • Executes dropped EXE

    • Loads dropped DLL

    • 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)

    • 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

    • Mark of the Web detected: This indicates that the page was originally saved or cloned.

    • Drops file in System32 directory

MITRE ATT&CK Enterprise v15

Tasks