Overview

overview

10

Static

static

3

489f26c346...3e.exe

windows7-x64

10

489f26c346...3e.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    379ca83aa9e775151a10c620998e9bbd4a56aa8d447e8d18d9e123eeebb195b0

  • Size

    166KB

  • Sample

    240417-qvqqrshg64

  • MD5

    0e9b97c7b9a3aecc97e15c0d6ecbd3a7

  • SHA1

    ca30b3adfd129819012e42dc5360d768c2eeed41

  • SHA256

    379ca83aa9e775151a10c620998e9bbd4a56aa8d447e8d18d9e123eeebb195b0

  • SHA512

    d44bcc3f77096696fab1eb1f98d712672436fd1c5d04b62b4096ce01d7decda5658b935539e3596fe853a632875e21b9b0d42b1a4e7d5d680c4fbce5caa8bdb1

  • SSDEEP

    3072:x3Ai1t5W7coHfH09aJmLzF3KyRAsGH3PhAkqxqYGTjvRzNV73FMjEuKkYTRA8:x3AYmlcEknRWuxqYsvB37FPkYTRA8

Score
10/10
tofseeevasionpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      489f26c346d2ff193ea6802b5c23e2bfa596960d2358d10ca70c60e590f61d3e.exe

    • Size

      307KB

    • MD5

      002577e928a32cc049a70cc3dfd32f1a

    • SHA1

      3260f1f784d1423c622b895cd8df6198c10afef2

    • SHA256

      489f26c346d2ff193ea6802b5c23e2bfa596960d2358d10ca70c60e590f61d3e

    • SHA512

      b696003b75d28c5b5004e9ad5f0d6d2d5685eccbb59935d870a222c28a10700281690df42b95ab745aaafa7c0a4987ea52d8b54792e481ba49f8af81fd86ca82

    • SSDEEP

      3072:TTUp9FKYtnJVHdc+O4vVUfF3vjS2MA7215s6pJUMu63jXdo:U5KWJVHdhftUBbVMA72E6pLjX

    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