Overview

overview

10

Static

static

3

cryptolaemus

windows10-2004-x64

10

cryptolaemus

windows11-21h2-x64

10

Sharing

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General

  • Target

    a30fdfa60f93f1d21c6817b522b4c63b52bcd4d5d186c1ff89d843d6bbfb53b4

  • Size

    401KB

  • Sample

    240905-j5r81swdpk

  • MD5

    09622c398a7e6f315f566bc7cabfec89

  • SHA1

    c3ccda11c40b396615e5facefd3bf02d03d96c7b

  • SHA256

    a30fdfa60f93f1d21c6817b522b4c63b52bcd4d5d186c1ff89d843d6bbfb53b4

  • SHA512

    5a5cbe7e55df348c46d912158dd58d735c2a289122ac46da106ee41c21432f7eea6e49dee0f0a243112c050fc6aaa85a2bddbcef7a2abd3009dcfa319746102b

  • SSDEEP

    6144:x2tEWSHPfTo04jYUy85YbRE3TgVPEHmVR0p//dZgC87mw4iklA:xvWSHPfTo04jSGYVE3hG0p/lZDsg

Score
10/10
tofseediscoveryevasionexecutionpersistenceprivilege_escalationtrojan

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      a30fdfa60f93f1d21c6817b522b4c63b52bcd4d5d186c1ff89d843d6bbfb53b4

    • Size

      401KB

    • MD5

      09622c398a7e6f315f566bc7cabfec89

    • SHA1

      c3ccda11c40b396615e5facefd3bf02d03d96c7b

    • SHA256

      a30fdfa60f93f1d21c6817b522b4c63b52bcd4d5d186c1ff89d843d6bbfb53b4

    • SHA512

      5a5cbe7e55df348c46d912158dd58d735c2a289122ac46da106ee41c21432f7eea6e49dee0f0a243112c050fc6aaa85a2bddbcef7a2abd3009dcfa319746102b

    • SSDEEP

      6144:x2tEWSHPfTo04jYUy85YbRE3TgVPEHmVR0p//dZgC87mw4iklA:xvWSHPfTo04jSGYVE3hG0p/lZDsg

    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