Overview

overview

10

Static

static

1c7dfbd2d8...b1.exe

windows7_x64

10

1c7dfbd2d8...b1.exe

windows10-2004_x64

10

Sharing

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General

  • Target

    1c7dfbd2d886ecd2ebfa7f4c6f6e4b9e4fd0f87f628effbfd62a53c3070861b1

  • Size

    102KB

  • Sample

    220607-sf3g5ahfa7

  • MD5

    b615ff689101509b760415b534294205

  • SHA1

    5850c0b7a2783482c093aeed72ab212b0dabe6fe

  • SHA256

    1c7dfbd2d886ecd2ebfa7f4c6f6e4b9e4fd0f87f628effbfd62a53c3070861b1

  • SHA512

    1eb7f5b08d9fd19a26f1f75368dbd9e0af74c9bfeb361a8d5ad89c67c3b9562038d78e4621df2723b8176e28418c74500c5dd6ac9ac04b898783d8e0384fc3b4

Score
10/10
tofseeevasionpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

43.231.4.7

lazystax.ru

Targets

    • Target

      1c7dfbd2d886ecd2ebfa7f4c6f6e4b9e4fd0f87f628effbfd62a53c3070861b1

    • Size

      102KB

    • MD5

      b615ff689101509b760415b534294205

    • SHA1

      5850c0b7a2783482c093aeed72ab212b0dabe6fe

    • SHA256

      1c7dfbd2d886ecd2ebfa7f4c6f6e4b9e4fd0f87f628effbfd62a53c3070861b1

    • SHA512

      1eb7f5b08d9fd19a26f1f75368dbd9e0af74c9bfeb361a8d5ad89c67c3b9562038d78e4621df2723b8176e28418c74500c5dd6ac9ac04b898783d8e0384fc3b4

    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