Overview

overview

10

Static

static

3

7800310c7b...b1.exe

windows7-x64

10

7800310c7b...b1.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    7800310c7b9e22b0528af79913ec7fa14055e228997375321404216a00b5a3b1

  • Size

    233KB

  • Sample

    240718-bnvntaybrq

  • MD5

    c9604c8a94443bd545579ce55ae5ad27

  • SHA1

    8f78a9d1d20762a330ea1de5df04d59d1a99dc04

  • SHA256

    7800310c7b9e22b0528af79913ec7fa14055e228997375321404216a00b5a3b1

  • SHA512

    7c7e6e47024449fd3a773ac84189b0b81e705a7ca174cc4e588ecd5bd64e9a3b6ea45ee8e93f2a568a200e31486b482934867c1fd11c7fab7a5483f6055d1e0d

  • SSDEEP

    3072:wkO/HalJCaET6ApsLTMQUzUdcPNEohbIxny+P6CNRIqY9Wjtx+8OCMMV:wkOMHWlpsLTMQF37nLP6iRhY8khY

Score
10/10
tofseeevasionexecutionpersistenceprivilege_escalationtrojan

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      7800310c7b9e22b0528af79913ec7fa14055e228997375321404216a00b5a3b1

    • Size

      233KB

    • MD5

      c9604c8a94443bd545579ce55ae5ad27

    • SHA1

      8f78a9d1d20762a330ea1de5df04d59d1a99dc04

    • SHA256

      7800310c7b9e22b0528af79913ec7fa14055e228997375321404216a00b5a3b1

    • SHA512

      7c7e6e47024449fd3a773ac84189b0b81e705a7ca174cc4e588ecd5bd64e9a3b6ea45ee8e93f2a568a200e31486b482934867c1fd11c7fab7a5483f6055d1e0d

    • SSDEEP

      3072:wkO/HalJCaET6ApsLTMQUzUdcPNEohbIxny+P6CNRIqY9Wjtx+8OCMMV:wkOMHWlpsLTMQF37nLP6iRhY8khY

    Score
    10/10
    tofseeevasionexecutionpersistenceprivilege_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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Tasks