Overview

overview

10

Static

static

3

cryptolaemus

windows10-2004-x64

10

cryptolaemus

windows11-21h2-x64

10

Sharing

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General

  • Target

    2779351a1b414beaa4082cf515986f42005dbded271630ec4f7c97efdff85b8d

  • Size

    239KB

  • Sample

    240907-lgl37sxdjb

  • MD5

    002356e241ed93062ea8cf0c80e250de

  • SHA1

    e81f528cd1f782c03943f48d9c8496c60ae3433f

  • SHA256

    2779351a1b414beaa4082cf515986f42005dbded271630ec4f7c97efdff85b8d

  • SHA512

    dcdc74eb2307329fdc3d00c4848e890c6f10f79ebea475efd0991aaf6a2ad46afb26ada642ff46e00d7cae491341a05d8f6622aae8695273d55e5e34921ede93

  • SSDEEP

    6144:MnucMBiyeneCyknMgs2Mkv/MJ0Vdh1tQ:Jc4iye5nS2MkrVdz

Score
10/10
tofseediscoveryevasionexecutionpersistenceprivilege_escalationtrojan

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      2779351a1b414beaa4082cf515986f42005dbded271630ec4f7c97efdff85b8d

    • Size

      239KB

    • MD5

      002356e241ed93062ea8cf0c80e250de

    • SHA1

      e81f528cd1f782c03943f48d9c8496c60ae3433f

    • SHA256

      2779351a1b414beaa4082cf515986f42005dbded271630ec4f7c97efdff85b8d

    • SHA512

      dcdc74eb2307329fdc3d00c4848e890c6f10f79ebea475efd0991aaf6a2ad46afb26ada642ff46e00d7cae491341a05d8f6622aae8695273d55e5e34921ede93

    • SSDEEP

      6144:MnucMBiyeneCyknMgs2Mkv/MJ0Vdh1tQ:Jc4iye5nS2MkrVdz

    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