Overview

overview

10

Static

static

3

57f6dbc4d6...67.exe

windows7-x64

10

57f6dbc4d6...67.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    57f6dbc4d6b680cfc1efb711e71be666540572c77e93555a246239227d463367

  • Size

    414KB

  • Sample

    240903-v92h2ascnp

  • MD5

    2b67e390e0b1d03d9b6e99d0271b8883

  • SHA1

    3c5dbe4222c43bbb6c8065142eb660a9c07af33e

  • SHA256

    57f6dbc4d6b680cfc1efb711e71be666540572c77e93555a246239227d463367

  • SHA512

    c040572536f174f22dd20308c754ee81fdb5fafe99f555575227113e7fdb67462eba5ecadbf645c2f6f6798b15d64b7950774d3d2340db76c06764210c26576b

  • SSDEEP

    3072:DaX5P74gWHs72AQo6ssNJb1SyLhzmqSWCXwwQS7tbdi2lA7MJZ4899kbKn4yixxb:W5jpWHs720fO0ysHR02lAMp9iK4dMt

Score
10/10
tofseediscoveryevasionexecutionpersistenceprivilege_escalationtrojan

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      57f6dbc4d6b680cfc1efb711e71be666540572c77e93555a246239227d463367

    • Size

      414KB

    • MD5

      2b67e390e0b1d03d9b6e99d0271b8883

    • SHA1

      3c5dbe4222c43bbb6c8065142eb660a9c07af33e

    • SHA256

      57f6dbc4d6b680cfc1efb711e71be666540572c77e93555a246239227d463367

    • SHA512

      c040572536f174f22dd20308c754ee81fdb5fafe99f555575227113e7fdb67462eba5ecadbf645c2f6f6798b15d64b7950774d3d2340db76c06764210c26576b

    • SSDEEP

      3072:DaX5P74gWHs72AQo6ssNJb1SyLhzmqSWCXwwQS7tbdi2lA7MJZ4899kbKn4yixxb:W5jpWHs720fO0ysHR02lAMp9iK4dMt

    Score
    10/10
    tofseediscoveryevasionexecutionpersistenceprivilege_escalationtrojan

    • Tofsee

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

      trojantofsee

    • Windows security bypass

      evasiontrojan

    • 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

2
T1562

Disable or Modify System Firewall

1
T1562.004

Disable or Modify Tools

1
T1562.001

Modify Registry

2
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