General

  • Target

    reav.exe

  • Size

    7.0MB

  • Sample

    220923-g2lkysdda2

  • MD5

    4c7bc4f742346f6f5506660175637a70

  • SHA1

    b1c87e4395474abb15a1c6bf785bee77adfaefa5

  • SHA256

    0423d0cb6564b1b11ac919f5c8d4de4d6cda4a694cdb9f62d2d44b6009bc506d

  • SHA512

    fdb83490b218672b0ebf32d2e9168d89865efe0373468974d05ed3fe1ac1a22c986f0e75a746da4002db280d03376179805e92b2c2a8700a90c85238231a6b29

  • SSDEEP

    196608:SIcrtGJOI5qLOKdTn8a9tcpAbe+wOlWd1wUgETPCO67:SIchGlepn8+Ag6wUhPx67

Malware Config

Targets

    • Target

      reav.exe

    • Size

      7.0MB

    • MD5

      4c7bc4f742346f6f5506660175637a70

    • SHA1

      b1c87e4395474abb15a1c6bf785bee77adfaefa5

    • SHA256

      0423d0cb6564b1b11ac919f5c8d4de4d6cda4a694cdb9f62d2d44b6009bc506d

    • SHA512

      fdb83490b218672b0ebf32d2e9168d89865efe0373468974d05ed3fe1ac1a22c986f0e75a746da4002db280d03376179805e92b2c2a8700a90c85238231a6b29

    • SSDEEP

      196608:SIcrtGJOI5qLOKdTn8a9tcpAbe+wOlWd1wUgETPCO67:SIchGlepn8+Ag6wUhPx67

    • 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

    • 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.

    • Loads dropped DLL

    • Themida packer

      Detects Themida, an advanced Windows software protection system.

    • Checks whether UAC is enabled

    • 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

1
T1497

Impair Defenses

1
T1562

Discovery

Query Registry

2
T1012

Virtualization/Sandbox Evasion

1
T1497

System Information Discovery

2
T1082

Impact

Service Stop

1
T1489

Tasks