General

  • Target

    7545d1ee58e6a9083ffc9e581e88d8c18dd2d906799c5233fa10b5b3d8cb55ba

  • Size

    239KB

  • Sample

    230923-zz71aacb87

  • MD5

    45d1a96fe58e04510a7921b543ae63c5

  • SHA1

    29a50a8f0c81df12676837bd6a7bcb2e5ad9ea0e

  • SHA256

    7545d1ee58e6a9083ffc9e581e88d8c18dd2d906799c5233fa10b5b3d8cb55ba

  • SHA512

    af40b05837ec36bb90c92fe49a911989d6569e3f65b50f3f245662b11b7df3c7de40819ac595e79cdced8ffff0135922e27421db9f4d4840c0405a06c0593a57

  • SSDEEP

    6144:3V46fuYXChoQTjlFgLuCY1dRuAOxXfm4ypuw8y0:3iYzXChdTbv1bu/fmYw8y

Malware Config

Extracted

Family

smokeloader

Version

2022

C2

http://77.91.68.29/fks/

rc4.i32
rc4.i32

Targets

    • Target

      7545d1ee58e6a9083ffc9e581e88d8c18dd2d906799c5233fa10b5b3d8cb55ba

    • Size

      239KB

    • MD5

      45d1a96fe58e04510a7921b543ae63c5

    • SHA1

      29a50a8f0c81df12676837bd6a7bcb2e5ad9ea0e

    • SHA256

      7545d1ee58e6a9083ffc9e581e88d8c18dd2d906799c5233fa10b5b3d8cb55ba

    • SHA512

      af40b05837ec36bb90c92fe49a911989d6569e3f65b50f3f245662b11b7df3c7de40819ac595e79cdced8ffff0135922e27421db9f4d4840c0405a06c0593a57

    • SSDEEP

      6144:3V46fuYXChoQTjlFgLuCY1dRuAOxXfm4ypuw8y0:3iYzXChdTbv1bu/fmYw8y

    • Phobos

      Phobos ransomware appeared at the beginning of 2019.

    • 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.

    • Suspicious use of NtCreateUserProcessOtherParentProcess

    • Deletes shadow copies

      Ransomware often targets backup files to inhibit system recovery.

    • Downloads MZ/PE file

    • Modifies Windows Firewall

    • Checks computer location settings

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

    • Drops startup file

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • Uses the VBS compiler for execution

    • Accesses Microsoft Outlook profiles

    • 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.

    • Drops desktop.ini file(s)

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v13

Execution

Scripting

1
T1064

Persistence

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Privilege Escalation

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Defense Evasion

Indicator Removal

2
T1070

File Deletion

2
T1070.004

Scripting

1
T1064

Modify Registry

2
T1112

Credential Access

Unsecured Credentials

1
T1552

Credentials In Files

1
T1552.001

Discovery

Query Registry

5
T1012

System Information Discovery

4
T1082

Peripheral Device Discovery

1
T1120

Collection

Data from Local System

1
T1005

Email Collection

1
T1114

Impact

Inhibit System Recovery

2
T1490

Tasks