General

  • Target

    8023baa395997864a13b4fe5494478a0.exe

  • Size

    162KB

  • Sample

    210328-v8y5e9hxjs

  • MD5

    8023baa395997864a13b4fe5494478a0

  • SHA1

    caa64258b10a9323ac71f98ed059f332548e3bff

  • SHA256

    36f56846e17922419f456453b3fe7e85ee95e0aed1fac5cdbfed9174e1523add

  • SHA512

    3078ca2aa0cb684598f1736f311c99f9dce07aa81bd1edca5d85b05a237773f792a8c444794e03c3f5603fcb123ead6fc74c78f93d413bbf05befcb3007b2ab4

Malware Config

Extracted

Family

smokeloader

Version

2020

C2

http://xsss99.icu/upload/

http://bingooodsg.icu/upload/

http://junntd.xyz/upload/

http://ginessa11.xyz/upload/

http://overplayninsx.xyz/upload/

http://bananinze.com/upload/

http://daunimlas.com/upload/

rc4.i32
rc4.i32

Targets

    • Target

      8023baa395997864a13b4fe5494478a0.exe

    • Size

      162KB

    • MD5

      8023baa395997864a13b4fe5494478a0

    • SHA1

      caa64258b10a9323ac71f98ed059f332548e3bff

    • SHA256

      36f56846e17922419f456453b3fe7e85ee95e0aed1fac5cdbfed9174e1523add

    • SHA512

      3078ca2aa0cb684598f1736f311c99f9dce07aa81bd1edca5d85b05a237773f792a8c444794e03c3f5603fcb123ead6fc74c78f93d413bbf05befcb3007b2ab4

    • SmokeLoader

      Modular backdoor trojan in use since 2014.

    • Tofsee

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

    • Vidar

      Vidar is an infostealer based on Arkei stealer.

    • Windows security bypass

    • Creates new service(s)

    • Executes dropped EXE

    • Modifies Windows Firewall

    • Sets service image path in registry

    • Deletes itself

    • Loads dropped DLL

    • Modifies file permissions

    • Reads local data of messenger clients

      Infostealers often target stored data of messaging applications, which can include saved credentials and account information.

    • Reads user/profile data of web browsers

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

    • Accesses 2FA software files, possible credential harvesting

    • 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.

    • 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

MITRE ATT&CK Matrix ATT&CK v6

Persistence

New Service

1
T1050

Modify Existing Service

1
T1031

Registry Run Keys / Startup Folder

2
T1060

Privilege Escalation

New Service

1
T1050

Defense Evasion

Disabling Security Tools

1
T1089

Modify Registry

4
T1112

File Permissions Modification

1
T1222

Install Root Certificate

1
T1130

Credential Access

Credentials in Files

4
T1081

Discovery

Query Registry

3
T1012

System Information Discovery

3
T1082

Peripheral Device Discovery

1
T1120

Collection

Data from Local System

4
T1005

Tasks