Overview

overview

10

Static

static

3

6fb0201dac...fd.exe

windows7-x64

10

6fb0201dac...fd.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    4dd4112152b70bd0e62e3f63b59634a9ccc4c0ed3b5fe90a1067526abac58856

  • Size

    98KB

  • Sample

    240417-q4g5zsbh7z

  • MD5

    7890c7e44ae337ac151bf262c352bb7b

  • SHA1

    caa852fbf2ce6f32b0063d952caee42736ef0724

  • SHA256

    4dd4112152b70bd0e62e3f63b59634a9ccc4c0ed3b5fe90a1067526abac58856

  • SHA512

    03c1b74e2b491674231ed23c1e74c834754cb5f79d4a70ba40a08447811971b822068b73be499c21c9021445ca22841febc41907cc13b97130507f4d2a157c58

  • SSDEEP

    3072:dabdhRBm3Y+FH+XPPEaqQhoirf9HTBLS5d9swj:dudhRG/F+PVx9H1G9swj

Score
10/10
tofseeevasionpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      6fb0201dac82a2b6f3c409d74005eb50aab93abd7508f513636be051db86eefd.exe

    • Size

      170KB

    • MD5

      f5fd4237e550503a8eab51ae35f147b6

    • SHA1

      869d44d58fb734b3692500dae1f42f0d6e3b3434

    • SHA256

      6fb0201dac82a2b6f3c409d74005eb50aab93abd7508f513636be051db86eefd

    • SHA512

      32327ca44e09d46ba8e656124f7480979b3eeb3769a94259d536a5223b2c532bd21654d8b4551d26265903f5c2be87a8da73d4571eee6fd9bfc887ea9e88350f

    • SSDEEP

      1536:Js5KSNeteSXSI4nZ7OyP8p7+C1xIhQ6M3dfUMJn325pDedDT50ZXXKVXRKX:e5ScSHCO1p7hiO4AI1edHK56lR

    Score
    10/10
    tofseeevasionpersistencetrojan

    • Tofsee

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

      trojantofsee

    • 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

1
T1562

Disable or Modify System Firewall

1
T1562.004

Modify Registry

1
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