Overview

overview

10

Static

static

5ff6edb9d9...aa.exe

windows7-x64

10

5ff6edb9d9...aa.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    5ff6edb9d95818ca99a6d559c287552009a4af4e943592d79a0f42efb44671aa

  • Size

    171KB

  • Sample

    220731-jq9vhsfbh3

  • MD5

    210e538a95d8fd1b5737c7116ec602de

  • SHA1

    f10933e1bfabe35fb3b50ebb825726b467a0a829

  • SHA256

    5ff6edb9d95818ca99a6d559c287552009a4af4e943592d79a0f42efb44671aa

  • SHA512

    79365f9b368fbff7b1d00821b1850e589987d70a1589949195fd3b084c9dea0658e83e6c50f2c8887386184f4c925f1de88746d47fe1f675aa6bd0e431867bbe

Score
10/10
tofseeevasionpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

43.231.4.7

lazystax.ru

Targets

    • Target

      5ff6edb9d95818ca99a6d559c287552009a4af4e943592d79a0f42efb44671aa

    • Size

      171KB

    • MD5

      210e538a95d8fd1b5737c7116ec602de

    • SHA1

      f10933e1bfabe35fb3b50ebb825726b467a0a829

    • SHA256

      5ff6edb9d95818ca99a6d559c287552009a4af4e943592d79a0f42efb44671aa

    • SHA512

      79365f9b368fbff7b1d00821b1850e589987d70a1589949195fd3b084c9dea0658e83e6c50f2c8887386184f4c925f1de88746d47fe1f675aa6bd0e431867bbe

    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