General

  • Target

    Software updated by Dylox.exe

  • Size

    3.2MB

  • Sample

    211026-s1xsdahgh7

  • MD5

    6f78118b606c3c7c9bad1a9e0671cda8

  • SHA1

    00abbc6a45d7009d8e166794289b39d0bb709ba5

  • SHA256

    7be5baa4d9a45af1e6f15fdf6600537ed78e1694f9daa37741b5e8c3e58d7005

  • SHA512

    77d474c0a67754e7f71ee1c932cd4f21bcbd1f94472ffd9c21cbe2c6242f5fa07f5fede82255b9037cff87fbde614225105db3b6a55be560dfc10ac74149d916

Malware Config

Extracted

Family

redline

Botnet

Youtube

C2

185.203.240.16:1249

Targets

    • Target

      Software updated by Dylox.exe

    • Size

      3.2MB

    • MD5

      6f78118b606c3c7c9bad1a9e0671cda8

    • SHA1

      00abbc6a45d7009d8e166794289b39d0bb709ba5

    • SHA256

      7be5baa4d9a45af1e6f15fdf6600537ed78e1694f9daa37741b5e8c3e58d7005

    • SHA512

      77d474c0a67754e7f71ee1c932cd4f21bcbd1f94472ffd9c21cbe2c6242f5fa07f5fede82255b9037cff87fbde614225105db3b6a55be560dfc10ac74149d916

    • 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