Overview

overview

10

Static

static

3

648bec4087...6d.exe

windows7-x64

10

648bec4087...6d.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    9a6f39342fc7130c1ee3f87b3652bed7fcb693f5a290aaf8b8aa9144e14e6808

  • Size

    145KB

  • Sample

    240417-qtypzshf98

  • MD5

    555e09c41385dd9fab8505268def2bca

  • SHA1

    0f86aef4ddbc655ac6cb1f72bc7303119bdd1e3e

  • SHA256

    9a6f39342fc7130c1ee3f87b3652bed7fcb693f5a290aaf8b8aa9144e14e6808

  • SHA512

    db5fa0162d84300d43f500d5609044127b16d7eab456fa51f90b761783baf4ed9b45ce5e38ae7807e8fe61aa756871d5498284888e51c4ffcca225f582a58c13

  • SSDEEP

    3072:jJ6xHv6VVMLFeYa8+TXKfWiUZJGbDWN0/EDUD/OTKURz:jJ6tv6VeLFda8+Tb2bSw/oKa

Score
10/10
tofseeevasionpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      648bec40870a8c3abce34fcf5924fcdb02601d7b5561aca406808649ff164a6d.exe

    • Size

      228KB

    • MD5

      aaa0a9ec9406d0974aad08aa5a36927a

    • SHA1

      dfef2eaa4d1b0db6711e0fd83b368eedc7aee3ff

    • SHA256

      648bec40870a8c3abce34fcf5924fcdb02601d7b5561aca406808649ff164a6d

    • SHA512

      e649a25fc6c77a3efbe2c258f28b853bbe65d362f375f5e64841f51b9ee8f6d1bb3fe3f3d7c3d95c9b7afd48e66ec318b5eb6a07a37f13c1cf3465855639eb08

    • SSDEEP

      3072:R4FLaaaoeUUG4JiE/Tt+/uFQEgytIFoNtaX9jFaTJJrnOMO2ktcqDXGI2RQ9lV7o:SFLav/Gs/XgyCFo/aX9OhnX8JV0

    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 v13

Initial Access

Execution

Persistence

Create or Modify System Process

2
T1543

Windows Service

2
T1543.003

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Privilege Escalation

Create or Modify System Process

2
T1543

Windows Service

2
T1543.003

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Defense Evasion

Impair Defenses

2
T1562

Disable or Modify Tools

1
T1562.001

Disable or Modify System Firewall

1
T1562.004

Modify Registry

2
T1112

Credential Access

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Tasks