Overview

overview

10

Static

static

file.exe

windows7-x64

10

file.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    file.exe

  • Size

    349KB

  • Sample

    221202-l5nxpsfe47

  • MD5

    f085b97a4a86e373cfee621309149f70

  • SHA1

    ea6c5f117b22fdbc40c80292eca1be2b2e03c27a

  • SHA256

    d289352c7a93aa0c2405c0f8b81162937680262984b90d27b018ba7096952219

  • SHA512

    7436bbe8b50fe75fc64b84de62b4abf2edc6935c50693a7df44e85ec0cb0ec372daf26587a9f810b93d7dd1f5a42cb1ef1fc7587fe76be16e489be63de024da5

  • SSDEEP

    3072:9RZr18aXVLB9+mTtq5qcns2e9/ajB03AJfPg4asOVxFJ4trhIh3eGjMgG1ao5Lc:VOEVLr+mTnIe9/ajm8ngoa94BuRjMgU

Score
10/10
tofseeevasionpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

svartalfheim.top

jotunheim.name

Targets

    • Target

      file.exe

    • Size

      349KB

    • MD5

      f085b97a4a86e373cfee621309149f70

    • SHA1

      ea6c5f117b22fdbc40c80292eca1be2b2e03c27a

    • SHA256

      d289352c7a93aa0c2405c0f8b81162937680262984b90d27b018ba7096952219

    • SHA512

      7436bbe8b50fe75fc64b84de62b4abf2edc6935c50693a7df44e85ec0cb0ec372daf26587a9f810b93d7dd1f5a42cb1ef1fc7587fe76be16e489be63de024da5

    • SSDEEP

      3072:9RZr18aXVLB9+mTtq5qcns2e9/ajB03AJfPg4asOVxFJ4trhIh3eGjMgG1ao5Lc:VOEVLr+mTnIe9/ajm8ngoa94BuRjMgU

    Score
    10/10
    tofseeevasionpersistencetrojan

    • Tofsee

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

      trojantofsee

    • Windows security bypass

      evasiontrojan

    • Creates new service(s)

      persistence

    • Executes dropped EXE

    • 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

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

New Service

1
T1050

Modify Existing Service

1
T1031

Registry Run Keys / Startup Folder

1
T1060

Privilege Escalation

New Service

1
T1050

Defense Evasion

Disabling Security Tools

1
T1089

Modify Registry

2
T1112

Credential Access

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Tasks