Overview

overview

10

Static

static

3

cryptolaemus

windows10-2004-x64

10

cryptolaemus

windows11-21h2-x64

10

Sharing

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General

  • Target

    16385d96743d3d0a22a752a5e2f8306921c89468fe258ea03e8e7e85705aa35e

  • Size

    228KB

  • Sample

    240911-pccwhszflc

  • MD5

    c386a6ad2d8424363fb872dfca82831f

  • SHA1

    3f8c3597caad3a7524f9b996d523fc6085624a7a

  • SHA256

    16385d96743d3d0a22a752a5e2f8306921c89468fe258ea03e8e7e85705aa35e

  • SHA512

    1750b367981ed088d26b4edaf8ad91b59e79d75479347b4313392d7a61151d1e584284bcdbba3051c471b49e36e7a77017a6efd3a24e387263cf9d8e34e66819

  • SSDEEP

    3072:6Nt7vpI299tzwPVZC2le5W3pIhvvdUr7nuQTdzZ/pUTetjy4f:6Nt7vpIK96NZCae5w80uQTdJ6TeZ

Score
10/10
tofseediscoveryevasionexecutionpersistenceprivilege_escalationtrojan

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      16385d96743d3d0a22a752a5e2f8306921c89468fe258ea03e8e7e85705aa35e

    • Size

      228KB

    • MD5

      c386a6ad2d8424363fb872dfca82831f

    • SHA1

      3f8c3597caad3a7524f9b996d523fc6085624a7a

    • SHA256

      16385d96743d3d0a22a752a5e2f8306921c89468fe258ea03e8e7e85705aa35e

    • SHA512

      1750b367981ed088d26b4edaf8ad91b59e79d75479347b4313392d7a61151d1e584284bcdbba3051c471b49e36e7a77017a6efd3a24e387263cf9d8e34e66819

    • SSDEEP

      3072:6Nt7vpI299tzwPVZC2le5W3pIhvvdUr7nuQTdzZ/pUTetjy4f:6Nt7vpIK96NZCae5w80uQTdJ6TeZ

    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

    • 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