Overview

overview

10

Static

static

39925d256f...c9.exe

windows7_x64

10

39925d256f...c9.exe

windows10-2004_x64

10

Sharing

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General

  • Target

    39925d256ffb487c669d5c3bb768eba1f9cfa7595c7faf0947c9bcd52c2cf1c9

  • Size

    258KB

  • Sample

    220625-ln4ltsfbdq

  • MD5

    7a717003f647ffa187853202db3cbe44

  • SHA1

    10b25fb91c1e200aba57b13ca96996a3a62dc77f

  • SHA256

    39925d256ffb487c669d5c3bb768eba1f9cfa7595c7faf0947c9bcd52c2cf1c9

  • SHA512

    0c97a36671dd383481f665d910038404aa83b9e37cfcd127a08a7a57865b04450f19dc3a987d04b4e01aeed54835d126325042655e0116dfe12f687dd40b0577

Score
10/10
tofseeevasionpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

43.231.4.7

lazystax.ru

Targets

    • Target

      39925d256ffb487c669d5c3bb768eba1f9cfa7595c7faf0947c9bcd52c2cf1c9

    • Size

      258KB

    • MD5

      7a717003f647ffa187853202db3cbe44

    • SHA1

      10b25fb91c1e200aba57b13ca96996a3a62dc77f

    • SHA256

      39925d256ffb487c669d5c3bb768eba1f9cfa7595c7faf0947c9bcd52c2cf1c9

    • SHA512

      0c97a36671dd383481f665d910038404aa83b9e37cfcd127a08a7a57865b04450f19dc3a987d04b4e01aeed54835d126325042655e0116dfe12f687dd40b0577

    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