General

  • Target

    0131154181fecb45f5202d01df6829c8dda517cfd222cd8ca0cf2c493b128c75

  • Size

    345KB

  • Sample

    220929-d38kbsagbl

  • MD5

    eec7e67afe150415f007130fb618ef24

  • SHA1

    40cd834f95206e7c491a07749613d8c49206d48a

  • SHA256

    0131154181fecb45f5202d01df6829c8dda517cfd222cd8ca0cf2c493b128c75

  • SHA512

    1fd070b9b1b80dcf4a892492a6024b6389bc946edd20c10d59642447f48ab8f330f62db468a28f626c5b479fc332980a2888b08d33229078dc3e86ad97541e63

  • SSDEEP

    6144:8GLlCEu5NC9YscJ8+tM1RMOcpohtLLbowLmW70FGg6WYc:notCXcJ4MRpoXowLmWtg9

Malware Config

Targets

    • Target

      0131154181fecb45f5202d01df6829c8dda517cfd222cd8ca0cf2c493b128c75

    • Size

      345KB

    • MD5

      eec7e67afe150415f007130fb618ef24

    • SHA1

      40cd834f95206e7c491a07749613d8c49206d48a

    • SHA256

      0131154181fecb45f5202d01df6829c8dda517cfd222cd8ca0cf2c493b128c75

    • SHA512

      1fd070b9b1b80dcf4a892492a6024b6389bc946edd20c10d59642447f48ab8f330f62db468a28f626c5b479fc332980a2888b08d33229078dc3e86ad97541e63

    • SSDEEP

      6144:8GLlCEu5NC9YscJ8+tM1RMOcpohtLLbowLmW70FGg6WYc:notCXcJ4MRpoXowLmWtg9

    • Modifies security service

    • xmrig

      XMRig is a high performance, open source, cross platform CPU/GPU miner.

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

    • XMRig Miner payload

    • Blocklisted process makes network request

    • Downloads MZ/PE file

    • Drops file in Drivers directory

    • Executes dropped EXE

    • Stops running service(s)

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

    • Checks BIOS information in registry

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

    • 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.

    • 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

    • Drops file in System32 directory

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v6

Execution

Scheduled Task

1
T1053

Persistence

Modify Existing Service

2
T1031

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Defense Evasion

Modify Registry

1
T1112

Virtualization/Sandbox Evasion

2
T1497

Impair Defenses

1
T1562

Credential Access

Credentials in Files

2
T1081

Discovery

Query Registry

4
T1012

Virtualization/Sandbox Evasion

2
T1497

System Information Discovery

3
T1082

Collection

Data from Local System

2
T1005

Command and Control

Web Service

1
T1102

Impact

Service Stop

1
T1489

Tasks