Overview

overview

10

Static

static

3

cryptolaemus

windows10-2004-x64

10

cryptolaemus

windows11-21h2-x64

10

Sharing

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General

  • Target

    6144c9369be2e903bdd67a73d031dac6e9edf69d54956ce1de82749ad4c0759f

  • Size

    191KB

  • Sample

    240904-fcy93svdnn

  • MD5

    57d8986f5db1704c0d6a46f1c6cbd77e

  • SHA1

    8d1761161e37a7c071d19700cb2b3a073d28f6f0

  • SHA256

    6144c9369be2e903bdd67a73d031dac6e9edf69d54956ce1de82749ad4c0759f

  • SHA512

    cbe09dd61dbf004195fef0dbe15c4abe6eaa6d7f6cfdf87b6019f46a585eedd3f97ff9f9da924bd9e673655096e005058cf3a2f6799b31cbce9ab9966ddeb6b6

  • SSDEEP

    3072:jH+lBBpz9/vh9yxqucBeJAD/MsgzPl5LjRZkpyqp29yOyb1:SBpz9/vh9yxWe+0sgzP/LjRZoJH

Score
10/10
tofseediscoveryevasionexecutionpersistenceprivilege_escalationtrojan

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      6144c9369be2e903bdd67a73d031dac6e9edf69d54956ce1de82749ad4c0759f

    • Size

      191KB

    • MD5

      57d8986f5db1704c0d6a46f1c6cbd77e

    • SHA1

      8d1761161e37a7c071d19700cb2b3a073d28f6f0

    • SHA256

      6144c9369be2e903bdd67a73d031dac6e9edf69d54956ce1de82749ad4c0759f

    • SHA512

      cbe09dd61dbf004195fef0dbe15c4abe6eaa6d7f6cfdf87b6019f46a585eedd3f97ff9f9da924bd9e673655096e005058cf3a2f6799b31cbce9ab9966ddeb6b6

    • SSDEEP

      3072:jH+lBBpz9/vh9yxqucBeJAD/MsgzPl5LjRZkpyqp29yOyb1:SBpz9/vh9yxWe+0sgzP/LjRZoJH

    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