General

  • Target

    Default.rdp

  • Size

    2KB

  • Sample

    240621-fdwkksycla

  • MD5

    3b38de9313a73a5b9ac66551816be7a8

  • SHA1

    00b1de0c3144baa00aed597e572c5a6f32b11b5d

  • SHA256

    ba334e633053acd7492d65b92285f384af69062f45c8880aa93d3e08becdc62a

  • SHA512

    4ab12b4ccb15a01a102fbc3660e6644bce974ff86bb1b77124d77bc074272897f3334b590a4386eb6ebe7ff0c1d79565e5696e7f919185b600f68bbf84efdebd

Malware Config

Targets

    • Target

      Default.rdp

    • Size

      2KB

    • MD5

      3b38de9313a73a5b9ac66551816be7a8

    • SHA1

      00b1de0c3144baa00aed597e572c5a6f32b11b5d

    • SHA256

      ba334e633053acd7492d65b92285f384af69062f45c8880aa93d3e08becdc62a

    • SHA512

      4ab12b4ccb15a01a102fbc3660e6644bce974ff86bb1b77124d77bc074272897f3334b590a4386eb6ebe7ff0c1d79565e5696e7f919185b600f68bbf84efdebd

    • Creates a large amount of network flows

      This may indicate a network scan to discover remotely running services.

    • Contacts a large (522) amount of remote hosts

      This may indicate a network scan to discover remotely running services.

    • Downloads MZ/PE file

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Enumerates connected drives

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

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    • Checks system information in the registry

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

    • Detected potential entity reuse from brand microsoft.

    • Drops file in System32 directory

    • Hide Artifacts: Hidden Files and Directories

MITRE ATT&CK Matrix ATT&CK v13

Execution

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Persistence

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Privilege Escalation

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Defense Evasion

Hide Artifacts

2
T1564

Hidden Files and Directories

2
T1564.001

Discovery

Network Service Discovery

2
T1046

Query Registry

6
T1012

System Information Discovery

7
T1082

Peripheral Device Discovery

2
T1120

Tasks