General

  • Target

    583e2556ab2e0cad0be321e7225eee8f0d7d7b9fe2886290e1cdccc919745b3b

  • Size

    403KB

  • Sample

    211207-v5sekabgbn

  • MD5

    0554b0dc31ba8ab76f167f84002758f2

  • SHA1

    b27b024a9b3a98c4d9320c07cc389ae481462c75

  • SHA256

    583e2556ab2e0cad0be321e7225eee8f0d7d7b9fe2886290e1cdccc919745b3b

  • SHA512

    699224b72cf2caa6c22ce448c14157441690bc6a8f6b2d08b6078c059a67351349fc4caaab7702b6ec155921dd2e7f432118ef9f269afd7f32d20c744894cec9

Malware Config

Extracted

Family

cryptbot

C2

gomcds22.top

morbuq02.top

Attributes
  • payload_url

    http://peuocu14.top/download.php?file=tauten.exe

Targets

    • Target

      583e2556ab2e0cad0be321e7225eee8f0d7d7b9fe2886290e1cdccc919745b3b

    • Size

      403KB

    • MD5

      0554b0dc31ba8ab76f167f84002758f2

    • SHA1

      b27b024a9b3a98c4d9320c07cc389ae481462c75

    • SHA256

      583e2556ab2e0cad0be321e7225eee8f0d7d7b9fe2886290e1cdccc919745b3b

    • SHA512

      699224b72cf2caa6c22ce448c14157441690bc6a8f6b2d08b6078c059a67351349fc4caaab7702b6ec155921dd2e7f432118ef9f269afd7f32d20c744894cec9

    • CryptBot

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

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

    • Blocklisted process makes network request

    • Downloads MZ/PE file

    • 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