Overview

overview

10

Static

static

10

496bf086f6...1d.exe

windows10-2004-x64

10

496bf086f6...1d.exe

windows11-ltsc_2024-x64

10

Sharing

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General

  • Target
    496bf086f6f615ba973c5a9106ac718c9c12ddc6b7fd5711292be7e0ed9a851d.bin
  • Size 13.5MB
  • Sample261014-nd85nstxa1
  • SHA256 496bf086f6f615ba973c5a9106ac718c9c12ddc6b7fd5711292be7e0ed9a851d
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
tofseedefense_evasiondiscoveryexecutionpersistenceprivilege_escalationtrojan

Malware Config

Extracted

Family

  • tofsee

C2

  • vanaheim.cn

  • jotunheim.name

Targets

    • Target
      496bf086f6f615ba973c5a9106ac718c9c12ddc6b7fd5711292be7e0ed9a851d.bin
    • Size 13.5MB
    • SHA256 496bf086f6f615ba973c5a9106ac718c9c12ddc6b7fd5711292be7e0ed9a851d
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    10/10
    defense_evasiondiscoveryexecutiontofseepersistenceprivilege_escalationtrojan

    • Family: Tofsee

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

      trojantofsee

    • Windows security bypass

      defense_evasiontrojan

    • Modifies Windows Firewall

      defense_evasion

    • Sets service image path in registry

      This determines the executable launched when a service starts. It can be used to establish persistence.

      persistence

    • Checks computer location settings

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

    • Creates new service(s)

      persistenceexecution

    • Deletes itself

      defense_evasion

    • Executes dropped EXE

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1
T1059

Windows Command Shell

1
T1059.003

System Services

1
T1569

Service Execution

1
T1569.002

Persistence

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Create or Modify System Process

3
T1543

Windows Service

3
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

3
T1543

Windows Service

3
T1543.003

Event Triggered Execution

1
T1546

Netsh Helper DLL

1
T1546.007

Defense Evasion

Impair Defenses

2
T1562

Disable or Modify System Firewall

1
T1562.004

Disable or Modify Tools

1
T1562.001

Indicator Removal

1
T1070

File Deletion

1
T1070.004

Modify Registry

2
T1112

Credential Access

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

System Location Discovery

1
T1614

System Language Discovery

1
T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Tasks