Overview

overview

10

Static

static

3

file.exe

windows7-x64

10

file.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    file.exe

  • Size

    351KB

  • Sample

    230507-kz9fsadb42

  • MD5

    9f95df4831aaa8dc6bd0cd4584f59e9b

  • SHA1

    14db8de87695de3074043932e8479e18ac2dd5d3

  • SHA256

    8e7b46b880092192df1a09ea0fd5878b17d1ba9ae89c5de6d61d74d1dd3e35f6

  • SHA512

    e2473f43d1898f6560935a4411de525ebdec2780d3c43132ebfec6adaa4e4de43b2af4ad4542ee1c3cd910a30718b79b04aa52143ea03c7b1edb78d495f71aee

  • SSDEEP

    6144:r/eUB2wMyGWA1qom6IvMlU9kaXOOEbLQHl2QSzVhn25Y:r/hBVPGWA106bha+OKsRSL6Y

Score
10/10
tofseeevasionpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      file.exe

    • Size

      351KB

    • MD5

      9f95df4831aaa8dc6bd0cd4584f59e9b

    • SHA1

      14db8de87695de3074043932e8479e18ac2dd5d3

    • SHA256

      8e7b46b880092192df1a09ea0fd5878b17d1ba9ae89c5de6d61d74d1dd3e35f6

    • SHA512

      e2473f43d1898f6560935a4411de525ebdec2780d3c43132ebfec6adaa4e4de43b2af4ad4542ee1c3cd910a30718b79b04aa52143ea03c7b1edb78d495f71aee

    • SSDEEP

      6144:r/eUB2wMyGWA1qom6IvMlU9kaXOOEbLQHl2QSzVhn25Y:r/hBVPGWA106bha+OKsRSL6Y

    Score
    10/10
    tofseeevasionpersistencetrojan

    • Tofsee

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

      trojantofsee

    • Windows security bypass

      evasiontrojan

    • Creates new service(s)

      persistence

    • 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 Matrix ATT&CK v6

Initial Access

Execution

Persistence

New Service

1
T1050

Modify Existing Service

1
T1031

Registry Run Keys / Startup Folder

1
T1060

Privilege Escalation

New Service

1
T1050

Defense Evasion

Disabling Security Tools

1
T1089

Modify Registry

2
T1112

Credential Access

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Tasks