Overview

overview

10

Static

static

2892fcb514...42.exe

windows7_x64

10

2892fcb514...42.exe

windows10-2004_x64

10

Sharing

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General

  • Target

    2892fcb514031795be8f62a7c309a5fe80279066517fd8bd219f2e0f31fb4042

  • Size

    142KB

  • Sample

    220615-vn81zsbfb5

  • MD5

    8ae987e80e12b61362f37b47ea603a71

  • SHA1

    29a2d26bf4d8a74d4ded2bba39af14e2af83016e

  • SHA256

    2892fcb514031795be8f62a7c309a5fe80279066517fd8bd219f2e0f31fb4042

  • SHA512

    d47df314643d82af87feb43f79ae5fef1ad61aa449755d0d73abee307bdc93fbcb53529c7fe8039e7bfb051d8041b084b3efd00d868377881b6c46b86c0f6ef7

Score
10/10
tofseeevasionpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

43.231.4.7

lazystax.ru

Targets

    • Target

      2892fcb514031795be8f62a7c309a5fe80279066517fd8bd219f2e0f31fb4042

    • Size

      142KB

    • MD5

      8ae987e80e12b61362f37b47ea603a71

    • SHA1

      29a2d26bf4d8a74d4ded2bba39af14e2af83016e

    • SHA256

      2892fcb514031795be8f62a7c309a5fe80279066517fd8bd219f2e0f31fb4042

    • SHA512

      d47df314643d82af87feb43f79ae5fef1ad61aa449755d0d73abee307bdc93fbcb53529c7fe8039e7bfb051d8041b084b3efd00d868377881b6c46b86c0f6ef7

    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