Overview

overview

10

Static

static

cf34b3d5b4...92.exe

windows7-x64

10

cf34b3d5b4...92.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    cf34b3d5b4d18cd0d6f1623a7e087a215c8ce97bebf829384f91ad1ff0273892

  • Size

    241KB

  • Sample

    220724-vxjsfscebj

  • MD5

    0d9777918bf88990845ce502f134d0e7

  • SHA1

    fd07698f680b1a42ba5b5864b1ac4e93121d0dca

  • SHA256

    cf34b3d5b4d18cd0d6f1623a7e087a215c8ce97bebf829384f91ad1ff0273892

  • SHA512

    c98bed0b3d17dd79d85f2bc42e621759a5c893fdcf2eb2020be93db2983fde41e5250d6455ea482fdac8e1be924e4230050861bade78bc865ca68b6ca2b0b669

Score
10/10
tofseeevasionpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

43.231.4.7

lazystax.ru

Targets

    • Target

      cf34b3d5b4d18cd0d6f1623a7e087a215c8ce97bebf829384f91ad1ff0273892

    • Size

      241KB

    • MD5

      0d9777918bf88990845ce502f134d0e7

    • SHA1

      fd07698f680b1a42ba5b5864b1ac4e93121d0dca

    • SHA256

      cf34b3d5b4d18cd0d6f1623a7e087a215c8ce97bebf829384f91ad1ff0273892

    • SHA512

      c98bed0b3d17dd79d85f2bc42e621759a5c893fdcf2eb2020be93db2983fde41e5250d6455ea482fdac8e1be924e4230050861bade78bc865ca68b6ca2b0b669

    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