Overview

overview

10

Static

static

4ec00b601d...13.exe

windows7-x64

10

4ec00b601d...13.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    4ec00b601deecd05d9e107a166db18f876fd7cc2c133d7f594d7c57a921e9313

  • Size

    98KB

  • Sample

    220720-t5ja8abgek

  • MD5

    3b326afec7f478d05e6442f35ae5acd2

  • SHA1

    f42051ce5b918aa505d9926af49777e251377f5f

  • SHA256

    4ec00b601deecd05d9e107a166db18f876fd7cc2c133d7f594d7c57a921e9313

  • SHA512

    93d7f4d8756f295461435e21f1edb5a241f9e44b72fd83e08c36fdcd41b583eb9e7a655c316ffe6b500318ea5d565909026eb164abe71bd30a5ca65f802a12f8

Score
10/10
tofseeevasionpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

43.231.4.7

lazystax.ru

Targets

    • Target

      4ec00b601deecd05d9e107a166db18f876fd7cc2c133d7f594d7c57a921e9313

    • Size

      98KB

    • MD5

      3b326afec7f478d05e6442f35ae5acd2

    • SHA1

      f42051ce5b918aa505d9926af49777e251377f5f

    • SHA256

      4ec00b601deecd05d9e107a166db18f876fd7cc2c133d7f594d7c57a921e9313

    • SHA512

      93d7f4d8756f295461435e21f1edb5a241f9e44b72fd83e08c36fdcd41b583eb9e7a655c316ffe6b500318ea5d565909026eb164abe71bd30a5ca65f802a12f8

    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