Overview

overview

9

Static

static

1

SteamBoost...1).exe

windows10-2004-x64

6

SteamBoost...1).exe

windows11-ltsc_2024-x64

9

Sharing

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General

  • Target
    SteamBoosterSetup (1).exe
  • Size 3.9MB
  • Sample260628-ch78dsey6w
  • SHA256 09c4f8262c74179f6f9bf776866f8bc1873ed8ce6b5e258c03d30ea344ad7678
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
credential_accessdefense_evasiondiscoverypersistenceprivilege_escalationransomwarestealer

Malware Config

Targets

    • Target
      SteamBoosterSetup (1).exe
    • Size 3.9MB
    • SHA256 09c4f8262c74179f6f9bf776866f8bc1873ed8ce6b5e258c03d30ea344ad7678
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    9/10
    discoverypersistencecredential_accessdefense_evasionprivilege_escalationransomwarestealer

    • Renames multiple (6141) files with added filename extension

      This suggests ransomware activity of encrypting all the files on the system.

      ransomware

    • Uses browser remote debugging

      Can be used control the browser and steal sensitive information such as credentials and session cookies.

      credential_accessstealer

    • Adds Run key to start application

      persistence

    • Downloads MZ/PE file

    • Drops file in System32 directory

    behavioral1behavioral2

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Modify Authentication Process

1
T1556

Privilege Escalation

Access Token Manipulation

1
T1134

Create Process with Token

1
T1134.002

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Defense Evasion

Access Token Manipulation

1
T1134

Create Process with Token

1
T1134.002

Modify Authentication Process

1
T1556

Modify Registry

1
T1112

Credential Access

Modify Authentication Process

1
T1556

Steal Web Session Cookie

1
T1539

Discovery

Browser Information Discovery

1
T1217

Peripheral Device Discovery

1
T1120

Query Registry

5
T1012

System Information Discovery

4
T1082

System Location Discovery

1
T1614

System Language Discovery

1
T1614.001

System Time Discovery

1
T1124

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Tasks