Overview

overview

10

Static

static

3

588c821f28...6a.exe

windows7-x64

10

588c821f28...6a.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    588c821f2829f6edb8188876d4a91648d3abd76cfa73d406d4d43e8f164dd36a

  • Size

    14.7MB

  • Sample

    241226-xqhb6avrbl

  • MD5

    336993cb022096f6ec4044cadb51676a

  • SHA1

    6fa127155546efc0deb7eefdf2e34f1f262c96b3

  • SHA256

    588c821f2829f6edb8188876d4a91648d3abd76cfa73d406d4d43e8f164dd36a

  • SHA512

    4c7b4f0a3dca13badc86f5d31ced92a85cea244a196bbeff2840e3e036bd6aa51b28adee8bdb07aee4b9d945353a6a295e5863ac922c6a37d7a0efd428818c86

  • SSDEEP

    3072:FEtETlIcJpeAXch6LLTjjdQ4TdcUaOE9HBMwu6Z6O3Q7mKte7111111111111111:UEPX86zdndcfrHBgXfmKte

Score
10/10
tofseediscoveryevasionexecutionpersistenceprivilege_escalationtrojan

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      588c821f2829f6edb8188876d4a91648d3abd76cfa73d406d4d43e8f164dd36a

    • Size

      14.7MB

    • MD5

      336993cb022096f6ec4044cadb51676a

    • SHA1

      6fa127155546efc0deb7eefdf2e34f1f262c96b3

    • SHA256

      588c821f2829f6edb8188876d4a91648d3abd76cfa73d406d4d43e8f164dd36a

    • SHA512

      4c7b4f0a3dca13badc86f5d31ced92a85cea244a196bbeff2840e3e036bd6aa51b28adee8bdb07aee4b9d945353a6a295e5863ac922c6a37d7a0efd428818c86

    • SSDEEP

      3072:FEtETlIcJpeAXch6LLTjjdQ4TdcUaOE9HBMwu6Z6O3Q7mKte7111111111111111:UEPX86zdndcfrHBgXfmKte

    Score
    10/10
    tofseediscoveryevasionexecutionpersistenceprivilege_escalationtrojan

    • Tofsee

      Backdoor/botnet which carries out malicious activities based on commands from a C2 server.

      trojantofsee

    • Tofsee family

      tofsee

    • 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

    • 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