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-e3netsfc3s

  • MD5

    1eb05ec5bc5982ebc88aa1ad6b69fb46

  • SHA1

    fcfc2f0c0f5cc446961959165b6dc01b29b23701

  • SHA256

    c841cb96a9a0648f1d9df6b16c244bc1e80aca79eebd77e733c2c33ddcef5e1a

  • SHA512

    c591a73be6073da3ee9a2f80336ba386c31c9f5f08332d5b8a6ec959bb8a6cc929dae51309832c648af44c69e712082f930e11ae3324a528bcfe5ff1265bb9f6

  • SSDEEP

    3072:fkJxzH6d2wC065TLWslukoo1Cl7U8onB:f4i2wklukooS7U8

Score
10/10
tofseeevasionpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

svartalfheim.top

jotunheim.name

Targets

    • Target

      file.exe

    • Size

      147KB

    • MD5

      1eb05ec5bc5982ebc88aa1ad6b69fb46

    • SHA1

      fcfc2f0c0f5cc446961959165b6dc01b29b23701

    • SHA256

      c841cb96a9a0648f1d9df6b16c244bc1e80aca79eebd77e733c2c33ddcef5e1a

    • SHA512

      c591a73be6073da3ee9a2f80336ba386c31c9f5f08332d5b8a6ec959bb8a6cc929dae51309832c648af44c69e712082f930e11ae3324a528bcfe5ff1265bb9f6

    • SSDEEP

      3072:fkJxzH6d2wC065TLWslukoo1Cl7U8onB:f4i2wklukooS7U8

    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