General

  • Target

    e8dc2f1287e54db1661563f05ebd1535_JaffaCakes118

  • Size

    4.4MB

  • Sample

    240409-bgghlshd66

  • MD5

    e8dc2f1287e54db1661563f05ebd1535

  • SHA1

    14d2a586dab1c48197d3298f648d82d507ebe28a

  • SHA256

    57fd9194f07f05c74a6cc39978fbcc9e68eac67779d047de5df8afa19e567064

  • SHA512

    c59d33501a5f65066a22d38a3133a530e17d765c32b1487eaba605b275d480b72a870b80ef1ac2a83a8fca71a70a6ae549497f9e796034a4e26947ade6417693

  • SSDEEP

    98304:5v/TdEIfWt/9rGvP3Ia5BTT+mky9RK7NIOCttTYZ9:5DdEH1rGvPpBGu944Q9

Malware Config

Extracted

Family

cryptbot

C2

otteppp11.top

doorres03.top

Targets

    • Target

      e8dc2f1287e54db1661563f05ebd1535_JaffaCakes118

    • Size

      4.4MB

    • MD5

      e8dc2f1287e54db1661563f05ebd1535

    • SHA1

      14d2a586dab1c48197d3298f648d82d507ebe28a

    • SHA256

      57fd9194f07f05c74a6cc39978fbcc9e68eac67779d047de5df8afa19e567064

    • SHA512

      c59d33501a5f65066a22d38a3133a530e17d765c32b1487eaba605b275d480b72a870b80ef1ac2a83a8fca71a70a6ae549497f9e796034a4e26947ade6417693

    • SSDEEP

      98304:5v/TdEIfWt/9rGvP3Ia5BTT+mky9RK7NIOCttTYZ9:5DdEH1rGvPpBGu944Q9

    • CryptBot

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

    • CryptBot payload

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

    • Blocklisted process makes network request

    • Checks BIOS information in registry

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

    • Checks computer location settings

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

    • Executes dropped EXE

    • Identifies Wine through registry keys

      Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

    • Loads dropped DLL

    • 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

    • Checks installed software on the system

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

    • 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 v13

Defense Evasion

Virtualization/Sandbox Evasion

2
T1497

Subvert Trust Controls

1
T1553

Install Root Certificate

1
T1553.004

Modify Registry

1
T1112

Credential Access

Unsecured Credentials

2
T1552

Credentials In Files

2
T1552.001

Discovery

Query Registry

6
T1012

Virtualization/Sandbox Evasion

2
T1497

System Information Discovery

4
T1082

Collection

Data from Local System

2
T1005

Command and Control

Web Service

1
T1102

Tasks