General

  • Target

    pub1.exe

  • Size

    2.2MB

  • Sample

    220419-e7ch5agbh7

  • MD5

    c8e46fca61b2d62c65dee70726a3b3fc

  • SHA1

    c9dcb284c07d234955bad32c763d517a45ce7be1

  • SHA256

    e61172cff1b99c47459423990313f06169c2e25c2273036c54780fb8068a7f57

  • SHA512

    93c08ac468b9feb2f672ca409b6b7fa2ee9b459e21133fdd96abcfb567a49f9eaf609cf339a68b81f9c260d9bbdaffc6e23f10ab639ab00e91238e4971ce74aa

Malware Config

Extracted

Family

smokeloader

Version

2020

C2

http://hydroxychl0roquine.xyz/

https://hydroxychl0roquine.xyz/

rc4.i32
rc4.i32

Extracted

Family

redline

Botnet

@ChelnEvreya

C2

46.8.220.88:65531

Attributes
  • auth_value

    d24bb0cd8742d0e0fba1abfab06e4005

Extracted

Family

redline

Botnet

install

C2

193.150.103.38:40169

Attributes
  • auth_value

    7b121606198c8456e17d49ab8c2d0e42

Extracted

Family

redline

Botnet

test run

C2

2.58.56.219:39064

Attributes
  • auth_value

    8d3e3da14c8032e314235e1d040823c7

Extracted

Family

arkei

Botnet

Default

C2

http://92.119.160.244/Biasdmxit.php

Targets

    • Target

      pub1.exe

    • Size

      2.2MB

    • MD5

      c8e46fca61b2d62c65dee70726a3b3fc

    • SHA1

      c9dcb284c07d234955bad32c763d517a45ce7be1

    • SHA256

      e61172cff1b99c47459423990313f06169c2e25c2273036c54780fb8068a7f57

    • SHA512

      93c08ac468b9feb2f672ca409b6b7fa2ee9b459e21133fdd96abcfb567a49f9eaf609cf339a68b81f9c260d9bbdaffc6e23f10ab639ab00e91238e4971ce74aa

    • Arkei

      Arkei is an infostealer written in C++.

    • 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.

    • Checks computer location settings

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

    • Loads dropped DLL

    • 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.

    • 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

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Hidden Files and Directories

1
T1158

Defense Evasion

Virtualization/Sandbox Evasion

1
T1497

Hidden Files and Directories

1
T1158

Credential Access

Credentials in Files

2
T1081

Discovery

Query Registry

6
T1012

Virtualization/Sandbox Evasion

1
T1497

System Information Discovery

6
T1082

Peripheral Device Discovery

1
T1120

Collection

Data from Local System

2
T1005

Tasks