General

  • Target

    81bea72e7a5446e2834b42e4d20371f7c95b0a0d0beb0b6b3ff20ed4d69a6d1c

  • Size

    243KB

  • Sample

    210919-2ms2psfbgl

  • MD5

    a09c3c781d7dda2ba51303ac5490e58b

  • SHA1

    f571fb5884cf9a39712012c13a67c59c8f37ef4b

  • SHA256

    81bea72e7a5446e2834b42e4d20371f7c95b0a0d0beb0b6b3ff20ed4d69a6d1c

  • SHA512

    fd5867ab30c53adcf56740a31bb877eab96edba326213a2db010b64effdfa53aa9903ba897b1d8a17cd3e2f197c2c4881cd2e40b2c207e061e15d0c7fa945d42

Malware Config

Extracted

Family

smokeloader

Version

2020

C2

http://venerynnet1.top/

http://kevonahira2.top/

http://vegangelist3.top/

http://kingriffaele4.top/

http://arakeishant5.top/

rc4.i32
rc4.i32

Extracted

Family

redline

Botnet

installEXE

C2

146.70.35.170:30905

Extracted

Family

redline

Botnet

UDP

C2

45.9.20.20:13441

Targets

    • Target

      81bea72e7a5446e2834b42e4d20371f7c95b0a0d0beb0b6b3ff20ed4d69a6d1c

    • Size

      243KB

    • MD5

      a09c3c781d7dda2ba51303ac5490e58b

    • SHA1

      f571fb5884cf9a39712012c13a67c59c8f37ef4b

    • SHA256

      81bea72e7a5446e2834b42e4d20371f7c95b0a0d0beb0b6b3ff20ed4d69a6d1c

    • SHA512

      fd5867ab30c53adcf56740a31bb877eab96edba326213a2db010b64effdfa53aa9903ba897b1d8a17cd3e2f197c2c4881cd2e40b2c207e061e15d0c7fa945d42

    • 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.

    • Tofsee

      Backdoor/botnet which carries out malicious activities based on commands from a C2 server.

    • Windows security bypass

    • 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

    • Creates new service(s)

    • Downloads MZ/PE file

    • Executes dropped EXE

    • Modifies Windows Firewall

    • Sets service image path in registry

    • Checks BIOS information in registry

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

    • Deletes itself

    • Loads dropped DLL

    • Reads user/profile data of local email clients

      Email clients store some user data on disk where infostealers will often target it.

    • 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

    • Legitimate hosting services abused for malware hosting/C2

    • Drops file in System32 directory

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v6

Tasks