Overview

overview

10

Static

static

3

cryptolaemus

windows10-2004-x64

10

cryptolaemus

windows11-21h2-x64

10

Sharing

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General

  • Target

    05fac6984dbadd223241df331d9c564e5a23bfa500c58d5fc31c69091c23a824

  • Size

    213KB

  • Sample

    240904-3qmjrszdje

  • MD5

    0556ab04b1d32de6dd710e9ce41c5144

  • SHA1

    511605433251c6d4608c3573e6dbe7da539dc25c

  • SHA256

    05fac6984dbadd223241df331d9c564e5a23bfa500c58d5fc31c69091c23a824

  • SHA512

    dc0899c1c49cac93fc29c3bf73aa2f34e23d6a972cf95a6ace710b59a4cbcab005d44643d42421dd47132b70984ddcaf1ea20cc502469b109aad361bda8c63b2

  • SSDEEP

    3072:+ASCGfSRnbJBJ1zduUJ8lmGl6Ag9ailfqy5bQ:CfSRnbJBJdUC84Guyw

Score
10/10
tofseediscoveryevasionexecutionpersistenceprivilege_escalationtrojan

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      05fac6984dbadd223241df331d9c564e5a23bfa500c58d5fc31c69091c23a824

    • Size

      213KB

    • MD5

      0556ab04b1d32de6dd710e9ce41c5144

    • SHA1

      511605433251c6d4608c3573e6dbe7da539dc25c

    • SHA256

      05fac6984dbadd223241df331d9c564e5a23bfa500c58d5fc31c69091c23a824

    • SHA512

      dc0899c1c49cac93fc29c3bf73aa2f34e23d6a972cf95a6ace710b59a4cbcab005d44643d42421dd47132b70984ddcaf1ea20cc502469b109aad361bda8c63b2

    • SSDEEP

      3072:+ASCGfSRnbJBJ1zduUJ8lmGl6Ag9ailfqy5bQ:CfSRnbJBJdUC84Guyw

    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