Overview

overview

10

Static

static

3

cryptolaemus

windows10-2004-x64

10

cryptolaemus

windows11-21h2-x64

10

Sharing

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General

  • Target

    3c78bec9015f0f5cbc98d724104ae0a7823732e14b2cbbe834ded05239efefd3

  • Size

    422KB

  • Sample

    240904-aal9vasbkc

  • MD5

    3311fa3eaf45f447e171af13c75bf9d5

  • SHA1

    2f507fceafd174b5197fe0342ae3af0739b4ece1

  • SHA256

    3c78bec9015f0f5cbc98d724104ae0a7823732e14b2cbbe834ded05239efefd3

  • SHA512

    bb8ef2f345079991a84025e38c16a87446edd45af254b2074a186e203a112335ead443bfc56b405f272c0274ab81ea6d898bbcdc51e4934ee0e3ff440bc19fff

  • SSDEEP

    6144:5Uruff9PhcIfdYFthIYNkCRFdtSckPLDfcbzjpk6vqoF:5kuff9Ph51ch/VTdt5kPLTcbzjpFF

Score
10/10
tofseediscoveryevasionexecutionpersistenceprivilege_escalationtrojan

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      3c78bec9015f0f5cbc98d724104ae0a7823732e14b2cbbe834ded05239efefd3

    • Size

      422KB

    • MD5

      3311fa3eaf45f447e171af13c75bf9d5

    • SHA1

      2f507fceafd174b5197fe0342ae3af0739b4ece1

    • SHA256

      3c78bec9015f0f5cbc98d724104ae0a7823732e14b2cbbe834ded05239efefd3

    • SHA512

      bb8ef2f345079991a84025e38c16a87446edd45af254b2074a186e203a112335ead443bfc56b405f272c0274ab81ea6d898bbcdc51e4934ee0e3ff440bc19fff

    • SSDEEP

      6144:5Uruff9PhcIfdYFthIYNkCRFdtSckPLDfcbzjpk6vqoF:5kuff9Ph51ch/VTdt5kPLTcbzjpFF

    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