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

    147KB

  • Sample

    221126-j29znaha8v

  • MD5

    4eb62a4c6ef0b767b031754502a53d39

  • SHA1

    1031001a9972fadf5308ade23eaa3010a168c256

  • SHA256

    e8ee109e27398ee0a3db27958f243924c1bba9523919c375a49e606acc53cc54

  • SHA512

    d5765daac7a19123e203e0f7e90c2ed43e6aebb1246c5516b7141f526a007a3d06310e278ebf2e0dece2e0a0446a602fea22a537d4caa6f79aa2625e23859047

  • SSDEEP

    3072:YrEIFtEGVCjl65U0o000FBUFfmEeVdvw46LkxC:HZGVy0o000FBUYnvwL

Score
10/10
tofseeevasionpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

svartalfheim.top

jotunheim.name

Targets

    • Target

      file.exe

    • Size

      147KB

    • MD5

      4eb62a4c6ef0b767b031754502a53d39

    • SHA1

      1031001a9972fadf5308ade23eaa3010a168c256

    • SHA256

      e8ee109e27398ee0a3db27958f243924c1bba9523919c375a49e606acc53cc54

    • SHA512

      d5765daac7a19123e203e0f7e90c2ed43e6aebb1246c5516b7141f526a007a3d06310e278ebf2e0dece2e0a0446a602fea22a537d4caa6f79aa2625e23859047

    • SSDEEP

      3072:YrEIFtEGVCjl65U0o000FBUFfmEeVdvw46LkxC:HZGVy0o000FBUYnvwL

    Score
    10/10
    tofseeevasionpersistencetrojan

    • Tofsee

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

      trojantofsee

    • 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.

    • 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

Modify Registry

1
T1112

Credential Access

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Tasks