General

  • Target

    Fri05890d11cdb13f95e.exe

  • Size

    8KB

  • Sample

    211022-rz7qhsbgc4

  • MD5

    9074b165bc9d453e37516a2558af6c9b

  • SHA1

    11db0a256a502aa87d5491438775922a34fb9aa8

  • SHA256

    3ffdaa1515622897c84111ab4180de09aadd03674935555270a2789625f7e513

  • SHA512

    ee0b950587c5a16a3c255f4c6b333e65cc2ada8429efc27e02165f4b3402fbd257a67f5adb8a3ffc1c4a4c95ecf2582da5ffbcb64322107e0e664ac7c388b62b

Malware Config

Extracted

Family

vidar

Version

41.5

Botnet

933

C2

https://mas.to/@xeroxxx

Attributes
  • profile_id

    933

Extracted

Family

redline

Botnet

build999

C2

109.107.191.123:52781

Targets

    • Target

      Fri05890d11cdb13f95e.exe

    • Size

      8KB

    • MD5

      9074b165bc9d453e37516a2558af6c9b

    • SHA1

      11db0a256a502aa87d5491438775922a34fb9aa8

    • SHA256

      3ffdaa1515622897c84111ab4180de09aadd03674935555270a2789625f7e513

    • SHA512

      ee0b950587c5a16a3c255f4c6b333e65cc2ada8429efc27e02165f4b3402fbd257a67f5adb8a3ffc1c4a4c95ecf2582da5ffbcb64322107e0e664ac7c388b62b

    • RedLine

      RedLine Stealer is a malware family written in C#, first appearing in early 2020.

    • RedLine Payload

    • Registers COM server for autorun

    • Suspicious use of NtCreateProcessExOtherParentProcess

    • Vidar

      Vidar is an infostealer based on Arkei stealer.

    • xmrig

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

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

    • Vidar Stealer

    • XMRig Miner Payload

    • Blocklisted process makes network request

    • Downloads MZ/PE file

    • Executes dropped EXE

    • Sets service image path in registry

    • 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.

    • 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 2FA software files, possible credential harvesting

    • Accesses cryptocurrency files/wallets, possible credential harvesting

    • Adds Run key to start application

    • 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

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v6

Execution

Scheduled Task

1
T1053

Persistence

Registry Run Keys / Startup Folder

3
T1060

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Defense Evasion

Virtualization/Sandbox Evasion

1
T1497

Modify Registry

4
T1112

Install Root Certificate

1
T1130

Credential Access

Credentials in Files

3
T1081

Discovery

Query Registry

6
T1012

Virtualization/Sandbox Evasion

1
T1497

System Information Discovery

6
T1082

Collection

Data from Local System

3
T1005

Command and Control

Web Service

1
T1102

Tasks