Overview

overview

10

Static

static

4c536a8728...b0.exe

windows7_x64

10

4c536a8728...b0.exe

windows10-2004_x64

10

Sharing

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General

  • Target

    4c536a8728b5a2207332856d9aea7be3be41f0b2a921c049a73894e371ca6cb0

  • Size

    341KB

  • Sample

    220625-j56fmsehe3

  • MD5

    c8a7a319ce6c507a8fa2b90c201c728e

  • SHA1

    d0683f663b502598c4f2c543cb1c2554eebd6e61

  • SHA256

    4c536a8728b5a2207332856d9aea7be3be41f0b2a921c049a73894e371ca6cb0

  • SHA512

    98c46849126cf94a3a9ac7c0c7e6525f44e2b46b77d6700e7c0adc61054b78f9cdc3d7bddecaf1ed4922d5f5af8c0426396ee26dcb31970225523118666864fc

Score
10/10
tofseeevasionpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

43.231.4.7

lazystax.ru

Targets

    • Target

      4c536a8728b5a2207332856d9aea7be3be41f0b2a921c049a73894e371ca6cb0

    • Size

      341KB

    • MD5

      c8a7a319ce6c507a8fa2b90c201c728e

    • SHA1

      d0683f663b502598c4f2c543cb1c2554eebd6e61

    • SHA256

      4c536a8728b5a2207332856d9aea7be3be41f0b2a921c049a73894e371ca6cb0

    • SHA512

      98c46849126cf94a3a9ac7c0c7e6525f44e2b46b77d6700e7c0adc61054b78f9cdc3d7bddecaf1ed4922d5f5af8c0426396ee26dcb31970225523118666864fc

    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