Overview

overview

10

Static

static

3

SecuriteIn...37.exe

windows7-x64

10

SecuriteIn...37.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    SecuriteInfo.com.Trojan-Ransom.StopCrypt.22110.437.exe

  • Size

    153KB

  • Sample

    240708-qkhmea1arr

  • MD5

    fed1740e597fff2d18ccd42e44d3f099

  • SHA1

    7fbf25801100278f9ddfc0a40e1cd8cd46fb0288

  • SHA256

    793959ab5ee6f59d49e330b808c2300772290f68bce04be397b1d02ea26833e6

  • SHA512

    20e9b344223d7d6ad891ecb2fda491c7e0b5c1f92f740e94d9d13091abba7278ac61a58457136befaaccbbc33606940d3dbb61e230fcf6b881777f5ae49532cb

  • SSDEEP

    3072:+0LookdnSvrOMsV2UAFe0mfU5LJLqTkAFUVwE7wQWLc:BLoo6eCMsEA+FukU

Score
10/10
tofseeevasionexecutionpersistenceprivilege_escalationtrojan

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      SecuriteInfo.com.Trojan-Ransom.StopCrypt.22110.437.exe

    • Size

      153KB

    • MD5

      fed1740e597fff2d18ccd42e44d3f099

    • SHA1

      7fbf25801100278f9ddfc0a40e1cd8cd46fb0288

    • SHA256

      793959ab5ee6f59d49e330b808c2300772290f68bce04be397b1d02ea26833e6

    • SHA512

      20e9b344223d7d6ad891ecb2fda491c7e0b5c1f92f740e94d9d13091abba7278ac61a58457136befaaccbbc33606940d3dbb61e230fcf6b881777f5ae49532cb

    • SSDEEP

      3072:+0LookdnSvrOMsV2UAFe0mfU5LJLqTkAFUVwE7wQWLc:BLoo6eCMsEA+FukU

    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

    • Stops running service(s)

      evasionexecution

    • 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

2
T1569

Service Execution

2
T1569.002

Persistence

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Create or Modify System Process

3
T1543

Windows Service

3
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

3
T1543

Windows Service

3
T1543.003

Event Triggered Execution

1
T1546

Netsh Helper DLL

1
T1546.007

Defense Evasion

Impair Defenses

3
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

Service Stop

1
T1489

Tasks