Overview

overview

10

Static

static

b3486e0d69...90.exe

windows7-x64

10

b3486e0d69...90.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    b3486e0d693e668eec18773a3da49ad26de5fbae3b5993b26726262f0687a190

  • Size

    97KB

  • Sample

    220731-htzy2sdfh7

  • MD5

    d728588592929f9bf15f3751b2021b5c

  • SHA1

    03165adb99b7471a7e8e271d8ae1aec391a7ed14

  • SHA256

    b3486e0d693e668eec18773a3da49ad26de5fbae3b5993b26726262f0687a190

  • SHA512

    75f723bab92604734235007e73950cb2e20374f00439eb155210e2ac5da4c2e09b936e7d3e54c3fd18bfea5f9b35a7e56c565be184f70bcfa3b38129f0e5b637

Score
10/10
tofseeevasionpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

43.231.4.7

lazystax.ru

Targets

    • Target

      b3486e0d693e668eec18773a3da49ad26de5fbae3b5993b26726262f0687a190

    • Size

      97KB

    • MD5

      d728588592929f9bf15f3751b2021b5c

    • SHA1

      03165adb99b7471a7e8e271d8ae1aec391a7ed14

    • SHA256

      b3486e0d693e668eec18773a3da49ad26de5fbae3b5993b26726262f0687a190

    • SHA512

      75f723bab92604734235007e73950cb2e20374f00439eb155210e2ac5da4c2e09b936e7d3e54c3fd18bfea5f9b35a7e56c565be184f70bcfa3b38129f0e5b637

    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