General

  • Target

    62648d0b64bbd4f5e4be007c752b174203384145604833b15eb967b0efa9ec30

  • Size

    8.6MB

  • Sample

    220625-lr98safchm

  • MD5

    1d0f0178e9fe7c70684b48699b6b327a

  • SHA1

    538b422631bf46c9647aac19d542cad8e910bc37

  • SHA256

    62648d0b64bbd4f5e4be007c752b174203384145604833b15eb967b0efa9ec30

  • SHA512

    8f0c41459589c14a8a010e1a2eadecd17c89189ef492b9828c76cd350a7af103c2e4f38dc47d38fc127a0a963a74972b8fbea7006acfbf335145372f2b0dfdb2

Malware Config

Targets

    • Target

      62648d0b64bbd4f5e4be007c752b174203384145604833b15eb967b0efa9ec30

    • Size

      8.6MB

    • MD5

      1d0f0178e9fe7c70684b48699b6b327a

    • SHA1

      538b422631bf46c9647aac19d542cad8e910bc37

    • SHA256

      62648d0b64bbd4f5e4be007c752b174203384145604833b15eb967b0efa9ec30

    • SHA512

      8f0c41459589c14a8a010e1a2eadecd17c89189ef492b9828c76cd350a7af103c2e4f38dc47d38fc127a0a963a74972b8fbea7006acfbf335145372f2b0dfdb2

    • CryptBot

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

    • Identifies VirtualBox via ACPI registry values (likely anti-VM)

    • Executes dropped EXE

    • Checks BIOS information in registry

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

    • Loads dropped DLL

    • Reads user/profile data of web browsers

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

    • Themida packer

      Detects Themida, an advanced Windows software protection system.

    • Accesses cryptocurrency files/wallets, possible credential harvesting

    • Checks installed software on the system

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

    • Checks whether UAC is enabled

    • Legitimate hosting services abused for malware hosting/C2

    • Looks up external IP address via web service

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

    • Suspicious use of NtSetInformationThreadHideFromDebugger

MITRE ATT&CK Matrix ATT&CK v6

Defense Evasion

Virtualization/Sandbox Evasion

1
T1497

Credential Access

Credentials in Files

2
T1081

Discovery

Query Registry

4
T1012

Virtualization/Sandbox Evasion

1
T1497

System Information Discovery

4
T1082

Collection

Data from Local System

2
T1005

Command and Control

Web Service

1
T1102

Tasks