Overview

overview

10

Static

static

3

cryptolaemus

windows10-2004-x64

10

cryptolaemus

windows11-21h2-x64

10

Sharing

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General

  • Target

    c564b24e83cfd5794d3f2276c8c85cecb84cf17df3bddceca16ab85fe70deec1

  • Size

    423KB

  • Sample

    240903-2453lazcrn

  • MD5

    a762e52f685156f3ece40f7f2c2530e7

  • SHA1

    61d90ec41f9b14179843a3f0b9892b8ae5ff80eb

  • SHA256

    c564b24e83cfd5794d3f2276c8c85cecb84cf17df3bddceca16ab85fe70deec1

  • SHA512

    c05b2b6856dff0b5ba66942bda6e0a497c9f47f6c31380fdc60a50fc36f4f8dd44cd4ccd3ace618c44086952274c4195f7c415f21c0511383abd7ad7867d8ad0

  • SSDEEP

    6144:cBSdEDPKsJZCSsIaMo3KXn3gJcR5dQhluRCaIvMpXE4:ckdEDPDJ0SsIaMvXnQI3QTuxx

Score
10/10
tofseediscoveryevasionexecutionpersistenceprivilege_escalationtrojan

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      c564b24e83cfd5794d3f2276c8c85cecb84cf17df3bddceca16ab85fe70deec1

    • Size

      423KB

    • MD5

      a762e52f685156f3ece40f7f2c2530e7

    • SHA1

      61d90ec41f9b14179843a3f0b9892b8ae5ff80eb

    • SHA256

      c564b24e83cfd5794d3f2276c8c85cecb84cf17df3bddceca16ab85fe70deec1

    • SHA512

      c05b2b6856dff0b5ba66942bda6e0a497c9f47f6c31380fdc60a50fc36f4f8dd44cd4ccd3ace618c44086952274c4195f7c415f21c0511383abd7ad7867d8ad0

    • SSDEEP

      6144:cBSdEDPKsJZCSsIaMo3KXn3gJcR5dQhluRCaIvMpXE4:ckdEDPDJ0SsIaMvXnQI3QTuxx

    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