Overview

overview

10

Static

static

3

cryptolaemus

windows10-2004-x64

10

cryptolaemus

windows11-21h2-x64

10

Sharing

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General

  • Target

    2ceb7d489e52c22b3400be1033d415d48f46548940e9519bf23ce3053d8a0a07

  • Size

    399KB

  • Sample

    240905-tjtj3athmm

  • MD5

    0739f44be0a711a02242bd37e1794796

  • SHA1

    7bc1505e740bc2f926cd72ab55615b9dc070ac5b

  • SHA256

    2ceb7d489e52c22b3400be1033d415d48f46548940e9519bf23ce3053d8a0a07

  • SHA512

    f23776894833937c752c161033295450f5a0b7a01f4454e4e96bac05a09193b2a2facb0287f5f7ff8dd1bd49e7f8172311b8401cb9b1986aafb73c9730f337b0

  • SSDEEP

    6144:f89I3KfShUDe2hAI+WBO5sIBdwWBCA+HO3njSRw:f89I3KfShUDMIRBSCLHO+

Score
10/10
tofseediscoveryevasionexecutionpersistenceprivilege_escalationtrojan

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      2ceb7d489e52c22b3400be1033d415d48f46548940e9519bf23ce3053d8a0a07

    • Size

      399KB

    • MD5

      0739f44be0a711a02242bd37e1794796

    • SHA1

      7bc1505e740bc2f926cd72ab55615b9dc070ac5b

    • SHA256

      2ceb7d489e52c22b3400be1033d415d48f46548940e9519bf23ce3053d8a0a07

    • SHA512

      f23776894833937c752c161033295450f5a0b7a01f4454e4e96bac05a09193b2a2facb0287f5f7ff8dd1bd49e7f8172311b8401cb9b1986aafb73c9730f337b0

    • SSDEEP

      6144:f89I3KfShUDe2hAI+WBO5sIBdwWBCA+HO3njSRw:f89I3KfShUDMIRBSCLHO+

    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