Overview

overview

10

Static

static

3

ddb7e1a941...da.exe

windows7-x64

10

ddb7e1a941...da.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    ddb7e1a9417893472e31106235b6e99d9da5b3c2813616fb2d7c4decc9f9e6da

  • Size

    12.8MB

  • Sample

    240515-j6y3ysgg58

  • MD5

    17518f56ceacd77eacca522bc510b316

  • SHA1

    9c1011aa585e4072b179fd38866dc60a96233a8d

  • SHA256

    ddb7e1a9417893472e31106235b6e99d9da5b3c2813616fb2d7c4decc9f9e6da

  • SHA512

    be5ffd052fca16d01fdbc29f8d5b20487548bae723eb90560338064dd89bef2ee9e75d299683b245283c98de0dd986af54cfe8180cda058bac15d13fe62194ff

  • SSDEEP

    6144:9b1OA891BbPY8WckxrFFJeOC3Je7ozzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzf:9Jp+vbPY8W1xhFJeRJe7

Score
10/10
tofseeevasionexecutionpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      ddb7e1a9417893472e31106235b6e99d9da5b3c2813616fb2d7c4decc9f9e6da

    • Size

      12.8MB

    • MD5

      17518f56ceacd77eacca522bc510b316

    • SHA1

      9c1011aa585e4072b179fd38866dc60a96233a8d

    • SHA256

      ddb7e1a9417893472e31106235b6e99d9da5b3c2813616fb2d7c4decc9f9e6da

    • SHA512

      be5ffd052fca16d01fdbc29f8d5b20487548bae723eb90560338064dd89bef2ee9e75d299683b245283c98de0dd986af54cfe8180cda058bac15d13fe62194ff

    • SSDEEP

      6144:9b1OA891BbPY8WckxrFFJeOC3Je7ozzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzf:9Jp+vbPY8W1xhFJeRJe7

    Score
    10/10
    tofseeevasionexecutionpersistencetrojan

    • 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

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

System Services

1
T1569

Service Execution

1
T1569.002

Persistence

Create or Modify System Process

2
T1543

Windows Service

2
T1543.003

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Privilege Escalation

Create or Modify System Process

2
T1543

Windows Service

2
T1543.003

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Defense Evasion

Impair Defenses

2
T1562

Disable or Modify Tools

1
T1562.001

Disable or Modify System Firewall

1
T1562.004

Modify Registry

2
T1112

Credential Access

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Tasks