Overview

overview

10

Static

static

3

ee0a8975ce...7N.exe

windows7-x64

10

ee0a8975ce...7N.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    ee0a8975ce97cb4e237571b3bde6deb777b1995766c46f89e722e2ee44392537N

  • Size

    247KB

  • Sample

    241023-ekg54azdla

  • MD5

    fa16a1112580ef5e90e09191b5b7c7b0

  • SHA1

    b89e96ca675fd9046657523e8ed63e2559ae35f2

  • SHA256

    ee0a8975ce97cb4e237571b3bde6deb777b1995766c46f89e722e2ee44392537

  • SHA512

    25ec5abdbcc7de061dc3b4c50d5285f0a75f52395f70c52e58397e0f4ed8952cbab22de04287ea2ea987d5fd5a610e453475ad05ea0f2240ad97aebc3aa5f422

  • SSDEEP

    3072:3uaLCc5NJCyZawVL1NbZyEC5ZXVYz3M5coy4ixZ2Hzaej:+aLCEjFZawVL1xuFYc5coIi

Score
10/10
tofseediscoveryevasionexecutionpersistenceprivilege_escalationtrojan

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      ee0a8975ce97cb4e237571b3bde6deb777b1995766c46f89e722e2ee44392537N

    • Size

      247KB

    • MD5

      fa16a1112580ef5e90e09191b5b7c7b0

    • SHA1

      b89e96ca675fd9046657523e8ed63e2559ae35f2

    • SHA256

      ee0a8975ce97cb4e237571b3bde6deb777b1995766c46f89e722e2ee44392537

    • SHA512

      25ec5abdbcc7de061dc3b4c50d5285f0a75f52395f70c52e58397e0f4ed8952cbab22de04287ea2ea987d5fd5a610e453475ad05ea0f2240ad97aebc3aa5f422

    • SSDEEP

      3072:3uaLCc5NJCyZawVL1NbZyEC5ZXVYz3M5coy4ixZ2Hzaej:+aLCEjFZawVL1xuFYc5coIi

    Score
    10/10
    tofseediscoveryevasionexecutionpersistenceprivilege_escalationtrojan

    • Tofsee

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

      trojantofsee

    • 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

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    • 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