General

  • Target

    c9b70a797816a2a999dd91383ede9476.exe

  • Size

    138KB

  • Sample

    210828-wy184s4z76

  • MD5

    c9b70a797816a2a999dd91383ede9476

  • SHA1

    2a50d1c449ebff7a4829c28c66c3efbcf47754ad

  • SHA256

    194fac72068b59295f3c091c72d9df5a62669b18b6f4133d2b8df5e78b1f395b

  • SHA512

    935e183a2eb323f5c42a16ae05e6269da162771ae540bae3890cbc1a06e7daaa35304b050167f7cfabb23891f500cf0604815fe6e1eb10c82193b564b912fcdb

Malware Config

Extracted

Family

smokeloader

Version

2020

C2

http://aucmoney.com/upload/

http://thegymmum.com/upload/

http://atvcampingtrips.com/upload/

http://kuapakualaman.com/upload/

http://renatazarazua.com/upload/

http://nasufmutlu.com/upload/

rc4.i32
rc4.i32

Extracted

Family

redline

C2

185.215.113.29:8678

Extracted

Family

redline

Botnet

hello

C2

80.66.87.33:36976

Targets

    • Target

      c9b70a797816a2a999dd91383ede9476.exe

    • Size

      138KB

    • MD5

      c9b70a797816a2a999dd91383ede9476

    • SHA1

      2a50d1c449ebff7a4829c28c66c3efbcf47754ad

    • SHA256

      194fac72068b59295f3c091c72d9df5a62669b18b6f4133d2b8df5e78b1f395b

    • SHA512

      935e183a2eb323f5c42a16ae05e6269da162771ae540bae3890cbc1a06e7daaa35304b050167f7cfabb23891f500cf0604815fe6e1eb10c82193b564b912fcdb

    • RedLine

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

    • RedLine Payload

    • SmokeLoader

      Modular backdoor trojan in use since 2014.

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

    • Downloads MZ/PE file

    • Executes dropped EXE

    • Checks BIOS information in registry

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

    • Deletes itself

    • Loads dropped DLL

    • Modifies file permissions

    • 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

    • 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

    • Looks up external IP address via web service

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

    • Writes to the Master Boot Record (MBR)

      Bootkits write to the MBR to gain persistence at a level below the operating system.

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

1
T1060

Bootkit

1
T1067

Defense Evasion

Virtualization/Sandbox Evasion

1
T1497

File Permissions Modification

1
T1222

Modify Registry

2
T1112

Install Root Certificate

1
T1130

Credential Access

Credentials in Files

2
T1081

Discovery

Query Registry

4
T1012

Virtualization/Sandbox Evasion

1
T1497

System Information Discovery

4
T1082

Peripheral Device Discovery

1
T1120

Collection

Data from Local System

2
T1005

Tasks