General

  • Target

    k8ydt04fc

  • Size

    437B

  • Sample

    230624-wz9bkadb21

  • MD5

    75a36ae9d041d88ab09033d0adad60ab

  • SHA1

    bfc0aa9408b9a8c635bb408ed5875d240b679db0

  • SHA256

    933d89deee3bd39d8a4a6e666e23ad4ecfa2c80520540254b507b9a83c35d369

  • SHA512

    248396bfb2ede86911129c0b7cf57e29b60322b29bc3f98e5b169bdde504ceb327a570017bae6483a0dee46f7888d65a497c1950b42873096b73e574e419302a

Malware Config

Extracted

Family

cryptbot

C2

http://ythre3sb.top/gate.php

Targets

    • Target

      k8ydt04fc

    • Size

      437B

    • MD5

      75a36ae9d041d88ab09033d0adad60ab

    • SHA1

      bfc0aa9408b9a8c635bb408ed5875d240b679db0

    • SHA256

      933d89deee3bd39d8a4a6e666e23ad4ecfa2c80520540254b507b9a83c35d369

    • SHA512

      248396bfb2ede86911129c0b7cf57e29b60322b29bc3f98e5b169bdde504ceb327a570017bae6483a0dee46f7888d65a497c1950b42873096b73e574e419302a

    • CryptBot

      A C++ stealer distributed widely in bundle with other software.

    • Downloads MZ/PE file

    • Checks computer location settings

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

    • Executes dropped EXE

    • Reads user/profile data of web browsers

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

    • Accesses cryptocurrency files/wallets, possible credential harvesting

    • 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.

    • Maps connected drives based on registry

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

MITRE ATT&CK Matrix ATT&CK v6

Execution

Scheduled Task

1
T1053

Persistence

Registry Run Keys / Startup Folder

1
T1060

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Defense Evasion

Modify Registry

3
T1112

Credential Access

Credentials in Files

2
T1081

Discovery

Query Registry

6
T1012

System Information Discovery

5
T1082

Peripheral Device Discovery

1
T1120

Remote System Discovery

1
T1018

Collection

Data from Local System

2
T1005

Tasks