Overview

overview

10

Static

static

8ef671e6c8...30.exe

windows7-x64

10

8ef671e6c8...30.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    8ef671e6c843f65adc868e3deb49ad1b226967b856c2c6c81eb0ecfd981c4930

  • Size

    109KB

  • Sample

    220724-v9wb1sdbcr

  • MD5

    4ebfba40ddf3b9e8f62466fc1923e236

  • SHA1

    1f510c742efd49e9348c1d6f50fd6e9161040b70

  • SHA256

    8ef671e6c843f65adc868e3deb49ad1b226967b856c2c6c81eb0ecfd981c4930

  • SHA512

    57e28c068d434170572a36e492ef29331f1b528c72380d756dba22a98c29217f59e4f384130b5e06eca8e35b18aa2a32963f1bbb9b6c786158e6166649078405

Score
10/10
tofseeevasionpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

43.231.4.7

lazystax.ru

Targets

    • Target

      8ef671e6c843f65adc868e3deb49ad1b226967b856c2c6c81eb0ecfd981c4930

    • Size

      109KB

    • MD5

      4ebfba40ddf3b9e8f62466fc1923e236

    • SHA1

      1f510c742efd49e9348c1d6f50fd6e9161040b70

    • SHA256

      8ef671e6c843f65adc868e3deb49ad1b226967b856c2c6c81eb0ecfd981c4930

    • SHA512

      57e28c068d434170572a36e492ef29331f1b528c72380d756dba22a98c29217f59e4f384130b5e06eca8e35b18aa2a32963f1bbb9b6c786158e6166649078405

    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