Overview

overview

10

Static

static

5f662e5221...89.exe

windows7-x64

10

5f662e5221...89.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    5f662e5221809ede2d9bb46fb3be36fb15d4e6b35921c9c34c2412775ef00d89

  • Size

    102KB

  • Sample

    220731-n799tsehc9

  • MD5

    58c848f7841d332fc990a34e4ebe87d0

  • SHA1

    5ef60b4f3aba6c5fbc0f37dd0fab98e207801710

  • SHA256

    5f662e5221809ede2d9bb46fb3be36fb15d4e6b35921c9c34c2412775ef00d89

  • SHA512

    596a8d135ca17dfdfaa3b2a6d8f2ccc14073c711224023b26fa8c8d4003ce54ee96c0884140e4e22af4ce05d7783298ad499fabb01a28ec5cb23e99a335c5381

Score
10/10
tofseeevasionpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

43.231.4.7

lazystax.ru

Targets

    • Target

      5f662e5221809ede2d9bb46fb3be36fb15d4e6b35921c9c34c2412775ef00d89

    • Size

      102KB

    • MD5

      58c848f7841d332fc990a34e4ebe87d0

    • SHA1

      5ef60b4f3aba6c5fbc0f37dd0fab98e207801710

    • SHA256

      5f662e5221809ede2d9bb46fb3be36fb15d4e6b35921c9c34c2412775ef00d89

    • SHA512

      596a8d135ca17dfdfaa3b2a6d8f2ccc14073c711224023b26fa8c8d4003ce54ee96c0884140e4e22af4ce05d7783298ad499fabb01a28ec5cb23e99a335c5381

    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