Overview

overview

10

Static

static

2e7a988c21...a5.exe

windows7_x64

10

2e7a988c21...a5.exe

windows10-2004_x64

10

Sharing

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General

  • Target

    2e7a988c2135655f43ba2622d9e3cec0cd082352be9a829dee43772a4db5a7a5

  • Size

    113KB

  • Sample

    220622-kb15haecg3

  • MD5

    f065237fd3b6c12dae373cf7815a92e8

  • SHA1

    047579f3b675f1cd67e300dc065b129bf63b118f

  • SHA256

    2e7a988c2135655f43ba2622d9e3cec0cd082352be9a829dee43772a4db5a7a5

  • SHA512

    8462c2a3e8d7873103b7707219485f14d2b5d591f2c276eac90ff0fad91b9bb4cef82766a218e4404739a783e7da45c5fd08ae7450c43d054a4c44064c0a9275

Score
10/10
tofseeevasionpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

43.231.4.7

lazystax.ru

Targets

    • Target

      2e7a988c2135655f43ba2622d9e3cec0cd082352be9a829dee43772a4db5a7a5

    • Size

      113KB

    • MD5

      f065237fd3b6c12dae373cf7815a92e8

    • SHA1

      047579f3b675f1cd67e300dc065b129bf63b118f

    • SHA256

      2e7a988c2135655f43ba2622d9e3cec0cd082352be9a829dee43772a4db5a7a5

    • SHA512

      8462c2a3e8d7873103b7707219485f14d2b5d591f2c276eac90ff0fad91b9bb4cef82766a218e4404739a783e7da45c5fd08ae7450c43d054a4c44064c0a9275

    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