Overview

overview

10

Static

static

3

04ec244112...82.exe

windows7-x64

10

04ec244112...82.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    d41959091ac25edd70b048368c7095644fb252d34ff088c49f4d56c8d2f5ae35

  • Size

    145KB

  • Sample

    240417-qk14raaf5x

  • MD5

    35588b5c2b33c212d0dec527e6a17c6a

  • SHA1

    d73995632501d922dc0d0b2f50a8f5889dfa8398

  • SHA256

    d41959091ac25edd70b048368c7095644fb252d34ff088c49f4d56c8d2f5ae35

  • SHA512

    24622f1c91f2169278a5c090c7078152e203f27edcf4cb81fa9730eff80f0a4b3cf92c83b1fd6fc392ae5481776036c97856180c92822fac97c390c041e7d4b0

  • SSDEEP

    3072:gr62ho2jmnp/p9TVWQ9dO123rvr7BBJ/SBvyYW:b2o2jotfTVWQXOI3rr7BgvyYW

Score
10/10
tofseeevasionpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      04ec244112b44e9592f9c5e45ab50e67e402f0704d8121678afe46117de90482.exe

    • Size

      233KB

    • MD5

      f81a2c93c44bfec11cdd55eb53dde5df

    • SHA1

      45cb3d7066113e86fff081e309265a797af0ef51

    • SHA256

      04ec244112b44e9592f9c5e45ab50e67e402f0704d8121678afe46117de90482

    • SHA512

      c9fc2a6239235aa0bf24e700665666c8500000bcc76dc8e26922f8cfc0f961949bf7fa04bf9877ea3254b9a5879752d1b3f75d945318c246770b507bc0b0199e

    • SSDEEP

      3072:LefNGJ/ceeYkb2BNog9oADOF4t0wC0NnpXIpKjVEqLDOO7n+MnIitmjXO9ZJwVQk:Le1GM+NobFm0wC0NpYpuVEqSFOTF

    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