Overview

overview

10

Static

static

3

cryptolaemus

windows10-2004-x64

10

cryptolaemus

windows11-21h2-x64

10

Sharing

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General

  • Target

    743e88ce351815e356e3605246222b8076c5ea5e79bc0a9c5304504a67818ac8

  • Size

    424KB

  • Sample

    240905-fd2ftsthpe

  • MD5

    f50413dcad54999b078491cda8cc97eb

  • SHA1

    b9757f71c4c63cdfdcd4b4e7e81343d2140fb97b

  • SHA256

    743e88ce351815e356e3605246222b8076c5ea5e79bc0a9c5304504a67818ac8

  • SHA512

    2ea5bd66f9365d7dfd14fe1a03234e02c17353e0f8d94316d7c15bb533444e68132f3de3b48ca366d147f0a21d4665730f00c9ae5d6981330680f9d31b03e74a

  • SSDEEP

    6144:xb7/BJsZfVjljXIJLprKi7Skl1QoRXZYsoS7ZD17T4kXwA:xXBJsZfVjlrgLND7SG1QyvH7T4k

Score
10/10
tofseediscoveryevasionexecutionpersistenceprivilege_escalationtrojan

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      743e88ce351815e356e3605246222b8076c5ea5e79bc0a9c5304504a67818ac8

    • Size

      424KB

    • MD5

      f50413dcad54999b078491cda8cc97eb

    • SHA1

      b9757f71c4c63cdfdcd4b4e7e81343d2140fb97b

    • SHA256

      743e88ce351815e356e3605246222b8076c5ea5e79bc0a9c5304504a67818ac8

    • SHA512

      2ea5bd66f9365d7dfd14fe1a03234e02c17353e0f8d94316d7c15bb533444e68132f3de3b48ca366d147f0a21d4665730f00c9ae5d6981330680f9d31b03e74a

    • SSDEEP

      6144:xb7/BJsZfVjljXIJLprKi7Skl1QoRXZYsoS7ZD17T4kXwA:xXBJsZfVjlrgLND7SG1QyvH7T4k

    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