Overview

overview

10

Static

static

3

cryptolaemus

windows10-2004-x64

10

cryptolaemus

windows11-21h2-x64

10

Sharing

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General

  • Target

    6b880d602f77fc4061a3f6b0a7619e9a8899d9e61eeeea4460eec1d900aeb66f

  • Size

    214KB

  • Sample

    240904-qanexasaje

  • MD5

    8b9be712ba5f26a1f6369833d52193fb

  • SHA1

    187b0a0888114923e4f611ed90402d7bf0e21733

  • SHA256

    6b880d602f77fc4061a3f6b0a7619e9a8899d9e61eeeea4460eec1d900aeb66f

  • SHA512

    33c457fab7b2910452de37d2a263d46b2391bb4b34b0c37793b6f5875180e92cb2caebfb2ab08e72393b0230407505c94eef6b41040c1500b2b4393fb3b58d08

  • SSDEEP

    3072:YASCGfSRnbJBJ0IQALHFv0raVXyPg9a+lfB0pyTbQ:0fSRnbJBJTLlr04C6

Score
10/10
tofseediscoveryevasionexecutionpersistenceprivilege_escalationtrojan

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      6b880d602f77fc4061a3f6b0a7619e9a8899d9e61eeeea4460eec1d900aeb66f

    • Size

      214KB

    • MD5

      8b9be712ba5f26a1f6369833d52193fb

    • SHA1

      187b0a0888114923e4f611ed90402d7bf0e21733

    • SHA256

      6b880d602f77fc4061a3f6b0a7619e9a8899d9e61eeeea4460eec1d900aeb66f

    • SHA512

      33c457fab7b2910452de37d2a263d46b2391bb4b34b0c37793b6f5875180e92cb2caebfb2ab08e72393b0230407505c94eef6b41040c1500b2b4393fb3b58d08

    • SSDEEP

      3072:YASCGfSRnbJBJ0IQALHFv0raVXyPg9a+lfB0pyTbQ:0fSRnbJBJTLlr04C6

    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