Overview

overview

10

Static

static

3

SecuriteIn...11.exe

windows7-x64

10

SecuriteIn...11.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    SecuriteInfo.com.Win32.CrypterX-gen.13041.27911.exe

  • Size

    165KB

  • Sample

    240708-srwhysvfrm

  • MD5

    56781772c92e1822beec9faee18fadc9

  • SHA1

    889af8e28ecda1df1e79c1f4abe533959b29a9db

  • SHA256

    4f0a6b89e63437c52a7adf09a15950b3ba5b9d1d7c8791a8559721ae24875894

  • SHA512

    7a46f160e3881578c8991ed07a746696738eb994b8f161796ef87081d1d6345927149f168197300750862564b672abaf522db193aa43d980aeef2abd115a460f

  • SSDEEP

    3072:jJLNXOgUQ4IiNpjhmD/Sc11y5Td0Cfq/UVwE7wQWLc:NLNXXUki1mTUmH

Score
10/10
tofseeevasionexecutionpersistenceprivilege_escalationtrojan

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      SecuriteInfo.com.Win32.CrypterX-gen.13041.27911.exe

    • Size

      165KB

    • MD5

      56781772c92e1822beec9faee18fadc9

    • SHA1

      889af8e28ecda1df1e79c1f4abe533959b29a9db

    • SHA256

      4f0a6b89e63437c52a7adf09a15950b3ba5b9d1d7c8791a8559721ae24875894

    • SHA512

      7a46f160e3881578c8991ed07a746696738eb994b8f161796ef87081d1d6345927149f168197300750862564b672abaf522db193aa43d980aeef2abd115a460f

    • SSDEEP

      3072:jJLNXOgUQ4IiNpjhmD/Sc11y5Td0Cfq/UVwE7wQWLc:NLNXXUki1mTUmH

    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