Overview

overview

10

Static

static

3

900f15042c...d7.exe

windows7-x64

10

900f15042c...d7.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    064a7850f92d518ccd3e2d57d1ab7922d851f9557cdce8218787ca9b794b0dfe

  • Size

    128KB

  • Sample

    240417-pjjbwaee59

  • MD5

    01ec81be8e14e87a9d34d5d377f51773

  • SHA1

    e367a0e0f8471897cf34f9dd417c58b811fb5867

  • SHA256

    064a7850f92d518ccd3e2d57d1ab7922d851f9557cdce8218787ca9b794b0dfe

  • SHA512

    c758524d1090d94ff6ac028a6118a937b04314d5a750ea3f442efe2bf3e7b42a3bafdbbd953e8fddc7623b4138d7250ee498ce80058b017fc79fd97c3735b781

  • SSDEEP

    3072:xAJ1HfZznYrMxqLVceMl+AvEYJ6ytAFtMa/CmG5v1TLDyGI1x:xC/nKHLOeMl+AcupAFtMa/C15TE

Score
10/10
tofseeevasionpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      900f15042c99288aef15c9187640b625ffec568147dd761f1508e9b61cc174d7.exe

    • Size

      204KB

    • MD5

      1f57a9bb99804b8193ef503404bb7387

    • SHA1

      674710911110b4b45030b990dabb3c45fd095b3f

    • SHA256

      900f15042c99288aef15c9187640b625ffec568147dd761f1508e9b61cc174d7

    • SHA512

      d93b6d24f3fdb267a0d43195bbba3494cb2734756e5e3090cea9e65c584d66ca5eb1842bda274f484a42dac89f2fb196a2ef83e9f8e70dad4ca4b1351c3acce7

    • SSDEEP

      3072:qfrB/GLaZdXUNc8iirJiM21K7uu+5Oiq08tJz5zoy887jImQpeBNMRDx/+cmH:qfrwclVORxv5z8kI1x2co

    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