Resubmissions

29-04-2024 08:42

240429-kma3fseh51 10

28-04-2024 12:51

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28-04-2024 12:50

240428-p3c9zagb79 1

28-04-2024 12:50

240428-p2xxzsge81 1

27-04-2024 12:26

240427-pmpcasba9v 10

25-04-2024 15:48

240425-s8x34scc35 10

24-04-2024 16:46

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24-04-2024 12:25

240424-pllj1shg8y 10

23-04-2024 15:49

240423-s9tgbahf57 10

23-04-2024 10:17

240423-mbcg9afd94 1

General

  • Target

    https://bing.com

  • Sample

    240424-pllj1shg8y

Malware Config

Extracted

Family

stealerium

C2

https://discord.com/api/webhooks/1222934891348623510/Ub0_FbG3n0ymoXEKwmmY5ar0ton3_3ECZSk0sxZj-lzMJrHgzr3xj2_TYpRvWzGv4yBM

Targets

    • Target

      https://bing.com

    • Stealerium

      An open source info stealer written in C# first seen in May 2022.

    • Creates new service(s)

    • Downloads MZ/PE file

    • Drops file in Drivers directory

    • Stops running service(s)

    • Executes dropped EXE

    • Reads user/profile data of web browsers

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

    • Accesses Microsoft Outlook profiles

    • Adds Run key to start application

    • 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

MITRE ATT&CK Matrix ATT&CK v13

Persistence

Create or Modify System Process

2
T1543

Windows Service

2
T1543.003

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Privilege Escalation

Create or Modify System Process

2
T1543

Windows Service

2
T1543.003

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Defense Evasion

Impair Defenses

1
T1562

Modify Registry

1
T1112

Credential Access

Unsecured Credentials

1
T1552

Credentials In Files

1
T1552.001

Discovery

Query Registry

2
T1012

Peripheral Device Discovery

1
T1120

System Information Discovery

2
T1082

Collection

Data from Local System

1
T1005

Email Collection

1
T1114

Command and Control

Web Service

1
T1102

Impact

Service Stop

1
T1489

Tasks