Overview

overview

10

Static

static

3

cryptolaemus

windows10-2004-x64

10

cryptolaemus

windows11-21h2-x64

10

Sharing

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General

  • Target

    12821c196cc88a3a45e493333ce627531cf80eb69b770d09f3e06e0d2e902579

  • Size

    400KB

  • Sample

    240905-pwgnta1cmn

  • MD5

    66c15920677ca47cf65247493d81c74f

  • SHA1

    797d67f514d1b406e6136070f093c3cbf52ef883

  • SHA256

    12821c196cc88a3a45e493333ce627531cf80eb69b770d09f3e06e0d2e902579

  • SHA512

    d31b09a5a70feaf073ed9bf17f62a54a6176c7e06c98ca2e6e5499be6b8feb8540494535897e93dcc645431810db9fac2ab9af76df1d63f0badf78016dfbf2a7

  • SSDEEP

    6144:56/s3XfhkfwSUSspgpgEffFWweOSWKc8i5ELrtcJ/e/sVhtA:56/s3Xfhkf1spgn7e2EGFus

Score
10/10
tofseediscoveryevasionexecutionpersistenceprivilege_escalationtrojan

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      12821c196cc88a3a45e493333ce627531cf80eb69b770d09f3e06e0d2e902579

    • Size

      400KB

    • MD5

      66c15920677ca47cf65247493d81c74f

    • SHA1

      797d67f514d1b406e6136070f093c3cbf52ef883

    • SHA256

      12821c196cc88a3a45e493333ce627531cf80eb69b770d09f3e06e0d2e902579

    • SHA512

      d31b09a5a70feaf073ed9bf17f62a54a6176c7e06c98ca2e6e5499be6b8feb8540494535897e93dcc645431810db9fac2ab9af76df1d63f0badf78016dfbf2a7

    • SSDEEP

      6144:56/s3XfhkfwSUSspgpgEffFWweOSWKc8i5ELrtcJ/e/sVhtA:56/s3Xfhkf1spgn7e2EGFus

    Score
    10/10
    tofseediscoveryevasionexecutionpersistenceprivilege_escalationtrojan

    • Tofsee

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

      trojantofsee

    • Creates new service(s)

      persistenceexecution

    • Modifies Windows Firewall

      evasion

    • Sets service image path in registry

      persistence

    • Checks computer location settings

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

    • Deletes itself

    • Executes dropped EXE

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

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

2
T1543

Windows Service

2
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

2
T1543

Windows Service

2
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

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