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

    276KB

  • Sample

    221202-hr4jfsge3s

  • MD5

    8861c3fedd83a41ca2637215c3bea553

  • SHA1

    9394b1527afa8de77c962e0895c681819cb2a529

  • SHA256

    4ffd8a5153b680b86b258bde87319885182c5e078cc0c0b16ab64009f7c69979

  • SHA512

    f1e21803aee16d146737284e491685e084b3d0a65e42986d4a4c5233f4860d309e7aa12cd8516baca7ad9384dd8ac43f67fdd2866e7e4b453b184e458eb87653

  • SSDEEP

    3072:exZL86CsL1KL6+tq5qt0OETP2F4HaNMX027CP1JTJbLCrhIh3eGjMgG1ao5Lk:NVsLML6+nt07J8OrOHNPSuRjMgU

Score
10/10
tofseeevasionpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

svartalfheim.top

jotunheim.name

Targets

    • Target

      file.exe

    • Size

      276KB

    • MD5

      8861c3fedd83a41ca2637215c3bea553

    • SHA1

      9394b1527afa8de77c962e0895c681819cb2a529

    • SHA256

      4ffd8a5153b680b86b258bde87319885182c5e078cc0c0b16ab64009f7c69979

    • SHA512

      f1e21803aee16d146737284e491685e084b3d0a65e42986d4a4c5233f4860d309e7aa12cd8516baca7ad9384dd8ac43f67fdd2866e7e4b453b184e458eb87653

    • SSDEEP

      3072:exZL86CsL1KL6+tq5qt0OETP2F4HaNMX027CP1JTJbLCrhIh3eGjMgG1ao5Lk:NVsLML6+nt07J8OrOHNPSuRjMgU

    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