Overview

overview

10

Static

static

3

x86_x64_setup.exe

windows7-x64

10

x86_x64_setup.exe

windows10-2004-x64

6

Sharing

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General

  • Target

    3d047ebfbd96b0eb4e406b962f90c9fa.zip

  • Size

    2.5MB

  • Sample

    240106-l4rxzaecf9

  • MD5

    3d047ebfbd96b0eb4e406b962f90c9fa

  • SHA1

    25dfde37e1fe43a8bcb502c3f59743b9a1e58c13

  • SHA256

    62fa979c83782843225c7a0d0f0aa695bae2bf29df295a83d4d0eb071d56a61d

  • SHA512

    97328284f33c6bdd2c274089d9e3f6d80d5423659df5b5dc51258188b33a46e01c0702770abe291627ace5581afcd645216c53c435706cf23c99d76ea740fd0d

  • SSDEEP

    49152:e0gfluPmAiVjPXv5uHJ6aSATmeFRHmX2Z3OQ+RvDgF5/Qj4RjPl5:0YudPxwIaLVRG+3O9RUF5Qj41

Score
10/10
nullmixersmokeloadervidar933pub5aspackv2backdoordropperevasionstealertrojan

Malware Config

Extracted

Family

nullmixer

C2

http://razino.xyz/

Extracted

Family

smokeloader

Botnet

pub5

Extracted

Family

vidar

Version

39.6

Botnet

933

C2

https://sslamlssa1.tumblr.com/

Attributes
  • profile_id

    933

Extracted

Family

smokeloader

Version

2020

C2

http://conceitosseg.com/upload/

http://integrasidata.com/upload/

http://ozentekstil.com/upload/

http://finbelportal.com/upload/

http://telanganadigital.com/upload/
rc4.i32
rc4.i32

Targets

    • Target

      x86_x64_setup.exe

    • Size

      2.5MB

    • MD5

      743e92349fa4e70b5d34bd9be733b41c

    • SHA1

      a1b82c3d1be61ba56e448a819990584df70a2fb4

    • SHA256

      486a9c9cdb67b95932d7e7deda2cdea44621c2b3f407f1206c1f3ce3766850ec

    • SHA512

      753a6314fcfa83302062e08d5704411234e321ff3eaf14ed92964576229491448e6960569c35c135fced32a80bdb65657343c08b8b1227d742377917052f0db5

    • SSDEEP

      49152:EgXyw1i3r1pIbtMja//3W6wNG3Ja0NDuYS5pwybSUZgBffTVSX:JXy3IbtMjalwy1N6YSnXZgB3Jq

    Score
    10/10
    nullmixersmokeloadervidar933pub5aspackv2backdoordropperevasionstealertrojan

    • Modifies Windows Defender Real-time Protection settings

      evasiontrojan

    • NullMixer

      NullMixer is a malware dropper leading to an infection chain of a wide variety of malware families.

      droppernullmixer

    • Process spawned unexpected child process

      This typically indicates the parent process was compromised via an exploit or macro.

    • SmokeLoader

      Modular backdoor trojan in use since 2014.

      trojanbackdoorsmokeloader

    • Suspicious use of NtCreateUserProcessOtherParentProcess

    • Vidar

      Vidar is an infostealer based on Arkei stealer.

      stealervidar

    • Vidar Stealer

      stealer

    • ASPack v2.12-2.42

      Detects executables packed with ASPack v2.12-2.42

      aspackv2

    • Executes dropped EXE

    • Loads dropped DLL

    • Unexpected DNS network traffic destination

      Network traffic to other servers than the configured DNS servers was detected on the DNS port.

    • Legitimate hosting services abused for malware hosting/C2

    • Looks up external IP address via web service

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

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Privilege Escalation

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Defense Evasion

Modify Registry

2
T1112

Impair Defenses

1
T1562

Disable or Modify Tools

1
T1562.001

Subvert Trust Controls

1
T1553

Install Root Certificate

1
T1553.004

Credential Access

Discovery

System Information Discovery

2
T1082

Query Registry

2
T1012

Peripheral Device Discovery

1
T1120

Lateral Movement

Collection

Exfiltration

Command and Control

Web Service

1
T1102

Impact

Resource Development

Reconnaissance

Tasks