Overview

overview

10

Static

static

3

2026-04-16...ee.exe

windows10-2004-x64

10

2026-04-16...ee.exe

windows11-21h2-x64

10

Sharing

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General

  • Target
    2026-04-16_6dee6309efa7c244d8782cc6ad3d4817_amadey_elex_manuscrypt_rhadamanthys_smoke-loader_stop_tofsee
  • Size 11.4MB
  • Sample260416-vec7ysaw91
  • SHA256 c996a547894c83e2e118ce558f0b0df17779c49e6737a2598594e3e6f91b943c
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
tofseedefense_evasiondiscoveryexecutionpersistenceprivilege_escalationtrojan

Malware Config

Extracted

Family

  • tofsee

C2

  • vanaheim.cn

  • jotunheim.name

Targets

    • Target
      2026-04-16_6dee6309efa7c244d8782cc6ad3d4817_amadey_elex_manuscrypt_rhadamanthys_smoke-loader_stop_tofsee
    • Size 11.4MB
    • SHA256 c996a547894c83e2e118ce558f0b0df17779c49e6737a2598594e3e6f91b943c
    • 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

    • 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

    • Executes dropped EXE

    • Stops running service(s)

      defense_evasionexecution

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

System Services

2
T1569

Service Execution

2
T1569.002

Persistence

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Create or Modify System Process

4
T1543

Windows Service

4
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

4
T1543

Windows Service

4
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

Modify Registry

1
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

Service Stop

1
T1489

Tasks