General

  • Target

    Software patch by Silensix.exe

  • Size

    3.0MB

  • Sample

    211028-tp8k6sbhc9

  • MD5

    1f1d67844ed54e1f03355f57ba8b17fc

  • SHA1

    248262da44662b7347ff6de745ac498ca7984e88

  • SHA256

    f2f1cba015211deb613359de61bc4bed08c9ccf1af7b9af89d73aaa1f4da6d42

  • SHA512

    9714f8fbd1533b54f4fbff6da24ba322e6f49ac47bc1a83d336424fb31cbd0f6b0bff8139f4ca9a13706593fbe288f89a9f74103a364fd56e13869dc32bde73d

Malware Config

Extracted

Family

redline

Botnet

Youtube

C2

185.203.240.16:1249

Targets

    • Target

      Software patch by Silensix.exe

    • Size

      3.0MB

    • MD5

      1f1d67844ed54e1f03355f57ba8b17fc

    • SHA1

      248262da44662b7347ff6de745ac498ca7984e88

    • SHA256

      f2f1cba015211deb613359de61bc4bed08c9ccf1af7b9af89d73aaa1f4da6d42

    • SHA512

      9714f8fbd1533b54f4fbff6da24ba322e6f49ac47bc1a83d336424fb31cbd0f6b0bff8139f4ca9a13706593fbe288f89a9f74103a364fd56e13869dc32bde73d

    • RedLine

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

    • RedLine Payload

    • 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

    • Checks BIOS information in registry

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

    • 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

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Defense Evasion

Virtualization/Sandbox Evasion

1
T1497

Credential Access

Credentials in Files

2
T1081

Discovery

Query Registry

3
T1012

Virtualization/Sandbox Evasion

1
T1497

System Information Discovery

3
T1082

Collection

Data from Local System

2
T1005

Command and Control

Web Service

1
T1102

Tasks