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Overview

overview

9

Static

static

1

BlueStacks...U=.exe

windows11-21h2-x64

9

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General

  • Target

    BlueStacksInstaller_5.22.0.1102_native_c149362582bde7dfb3b23feb768aa4c3_MzsxNSwwOzUsMTsxNSw0OzE1LDU7MTU=.exe

  • Size

    918KB

  • Sample

    250328-msj9esvvds

  • MD5

    116edcc32f9b833cd8bd5dedfb05f6f3

  • SHA1

    dec2245c1cc66dc79362a5ee366d4de0995295c7

  • SHA256

    f6d7f4df4b244e1bffe2f48e232776abe54bd4e8d1d765d865975b393e22c171

  • SHA512

    6f6a3e87bb9280b3647c24ee8211d95bcb769201be53b826d8e42306b9dc8d0e5eb68fa6cbe810c58883dfac34f73e3b0d36aa976adf01bfa16e3e1cdaf4d59f

  • SSDEEP

    24576:8ivtCXWeGKKGQNHdtynELf05sOO1YwumcO9zA/4lr4NyF:ZtCXWPTGQVbrpZGwuNYA/G4NyF

Score
9/10
defense_evasiondiscoverypersistenceprivilege_escalationransomware

Malware Config

Targets

    • Target

      BlueStacksInstaller_5.22.0.1102_native_c149362582bde7dfb3b23feb768aa4c3_MzsxNSwwOzUsMTsxNSw0OzE1LDU7MTU=.exe

    • Size

      918KB

    • MD5

      116edcc32f9b833cd8bd5dedfb05f6f3

    • SHA1

      dec2245c1cc66dc79362a5ee366d4de0995295c7

    • SHA256

      f6d7f4df4b244e1bffe2f48e232776abe54bd4e8d1d765d865975b393e22c171

    • SHA512

      6f6a3e87bb9280b3647c24ee8211d95bcb769201be53b826d8e42306b9dc8d0e5eb68fa6cbe810c58883dfac34f73e3b0d36aa976adf01bfa16e3e1cdaf4d59f

    • SSDEEP

      24576:8ivtCXWeGKKGQNHdtynELf05sOO1YwumcO9zA/4lr4NyF:ZtCXWPTGQVbrpZGwuNYA/G4NyF

    Score
    9/10
    defense_evasiondiscoverypersistenceprivilege_escalationransomware

    • Renames multiple (193) files with added filename extension

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

      ransomware

    • Adds Run key to start application

      persistence

    • Downloads MZ/PE file

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    • Modifies Windows Firewall

      defense_evasion

    • Drops file in System32 directory

    • Enumerates processes with tasklist

      discovery
    behavioral1

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Event Triggered Execution

1
T1546

Netsh Helper DLL

1
T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Event Triggered Execution

1
T1546

Netsh Helper DLL

1
T1546.007

Defense Evasion

Impair Defenses

1
T1562

Disable or Modify System Firewall

1
T1562.004

Modify Registry

1
T1112

Credential Access

Discovery

Peripheral Device Discovery

1
T1120

Process Discovery

1
T1057

Query Registry

4
T1012

System Information Discovery

3
T1082

System Location Discovery

1
T1614

System Language Discovery

1
T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Tasks