General

  • Target

    tmp

  • Size

    3.2MB

  • Sample

    230115-mmqt1sde99

  • MD5

    031b4e1936f8758b15a7a26045162e3a

  • SHA1

    5de003a965dde33ca504abc1d4f524e5a285b328

  • SHA256

    4718af9354fd4c3f45bcd3ac66cf3e66f90004a9703dfc757690cbd669773aad

  • SHA512

    2b99a219704c7bfcc21e0831c691d482230daa0781705ae1b2fa7c7410a3bb63797f69d0efe64c6edd55de2e5f7c876c72fc3ca76ad369db11b59498c1fbb394

  • SSDEEP

    98304:5C7tc/q94MEjFFbK2gD4iyA9GZ5aICRdbw+a:pDMKbAExeIWbha

Malware Config

Targets

    • Target

      tmp

    • Size

      3.2MB

    • MD5

      031b4e1936f8758b15a7a26045162e3a

    • SHA1

      5de003a965dde33ca504abc1d4f524e5a285b328

    • SHA256

      4718af9354fd4c3f45bcd3ac66cf3e66f90004a9703dfc757690cbd669773aad

    • SHA512

      2b99a219704c7bfcc21e0831c691d482230daa0781705ae1b2fa7c7410a3bb63797f69d0efe64c6edd55de2e5f7c876c72fc3ca76ad369db11b59498c1fbb394

    • SSDEEP

      98304:5C7tc/q94MEjFFbK2gD4iyA9GZ5aICRdbw+a:pDMKbAExeIWbha

    • Modifies security service

    • Suspicious use of NtCreateUserProcessOtherParentProcess

    • UAC bypass

    • 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

    • Downloads MZ/PE file

    • 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.

    • Checks computer location settings

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

    • Obfuscated with Agile.Net obfuscator

      Detects use of the Agile.Net commercial obfuscator, which is capable of entity renaming and control flow obfuscation.

    • 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.

    • Adds Run key to start application

    • Checks whether UAC is enabled

    • Looks up external IP address via web service

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

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Modify Existing Service

2
T1031

Registry Run Keys / Startup Folder

1
T1060

Privilege Escalation

Bypass User Account Control

1
T1088

Defense Evasion

Modify Registry

4
T1112

Bypass User Account Control

1
T1088

Disabling Security Tools

1
T1089

Virtualization/Sandbox Evasion

1
T1497

Impair Defenses

1
T1562

Credential Access

Credentials in Files

1
T1081

Discovery

Query Registry

4
T1012

Virtualization/Sandbox Evasion

1
T1497

System Information Discovery

5
T1082

Collection

Data from Local System

1
T1005

Impact

Service Stop

1
T1489

Tasks