Overview

overview

10

Static

static

3

b31a4fce30...8N.exe

windows7-x64

10

b31a4fce30...8N.exe

windows10-2004-x64

10

Sharing

Copy URL
Twitter E-mail

General

  • Target

    b31a4fce3073218756ef0c2ebce409288bba3d9dca83a47476cc38316d90a5b8N.exe

  • Size

    320KB

  • Sample

    241220-b3534awpgj

  • MD5

    e0cf01f8e4d92943522cd69b01dcf100

  • SHA1

    e47238b98f51c0384fea167f3054e63c48cee720

  • SHA256

    b31a4fce3073218756ef0c2ebce409288bba3d9dca83a47476cc38316d90a5b8

  • SHA512

    ceb3aa49012c565f3657eb78cc94e2e95a5bce72b8ad361a2e7d2cadcd6ad1869bda22db784034219af80ed9e9cd09268f938c1049fd26b34a288b66c3a899ba

  • SSDEEP

    6144:08FOumLCE/jANU0VSaimnpnv9/2Hh5Sao2JUjJUrecECM:08FdmOE/y7QaimlF2UR2JMJUrq

Score
10/10
tofseediscoveryevasionexecutionpersistenceprivilege_escalationtrojan

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      b31a4fce3073218756ef0c2ebce409288bba3d9dca83a47476cc38316d90a5b8N.exe

    • Size

      320KB

    • MD5

      e0cf01f8e4d92943522cd69b01dcf100

    • SHA1

      e47238b98f51c0384fea167f3054e63c48cee720

    • SHA256

      b31a4fce3073218756ef0c2ebce409288bba3d9dca83a47476cc38316d90a5b8

    • SHA512

      ceb3aa49012c565f3657eb78cc94e2e95a5bce72b8ad361a2e7d2cadcd6ad1869bda22db784034219af80ed9e9cd09268f938c1049fd26b34a288b66c3a899ba

    • SSDEEP

      6144:08FOumLCE/jANU0VSaimnpnv9/2Hh5Sao2JUjJUrecECM:08FdmOE/y7QaimlF2UR2JMJUrq

    Score
    10/10
    tofseediscoveryevasionexecutionpersistenceprivilege_escalationtrojan

    • Tofsee

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

      trojantofsee

    • Tofsee family

      tofsee

    • Windows security bypass

      evasiontrojan

    • Creates new service(s)

      persistenceexecution

    • 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 Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

1
T1569

Service Execution

1
T1569.002

Persistence

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Create or Modify System Process

2
T1543

Windows Service

2
T1543.003

Event Triggered Execution

1
T1546

Netsh Helper DLL

1
T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Create or Modify System Process

2
T1543

Windows Service

2
T1543.003

Event Triggered Execution

1
T1546

Netsh Helper DLL

1
T1546.007

Defense Evasion

Impair Defenses

2
T1562

Disable or Modify System Firewall

1
T1562.004

Disable or Modify Tools

1
T1562.001

Modify Registry

2
T1112

Credential Access

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

System Location Discovery

1
T1614

System Language Discovery

1
T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Tasks