Overview

overview

10

Static

static

3

519a4bd72f...be.exe

windows7-x64

10

519a4bd72f...be.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    519a4bd72f7bc8a67c137c34d411b5be

  • Size

    312KB

  • Sample

    230508-db43tsae91

  • MD5

    519a4bd72f7bc8a67c137c34d411b5be

  • SHA1

    37ca60f3bf1a4d7068cd19b1e3e9cf69afa269dc

  • SHA256

    61df65948553b5e1e385bcfa866cae9a30ace0e427ab57e455985988d30eee20

  • SHA512

    7b66bb5843e7b7f2ca95429c0bfd3dd049dc95346507cd0acb23947473daaf6e6b6cc45d59c7625f7e7e8c7a4ff6b00a3e8a7e25441865782f02b104b1db55e8

  • SSDEEP

    3072:hpX6/jiqnsLTpqy0ZXRtmYoGLA5///Px8S5gJXga5MydPAv7wqqTM:T6/jXsLT4y0ZXRtmUA5HXx150wa87a

Score
10/10
tofseeevasionpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      519a4bd72f7bc8a67c137c34d411b5be

    • Size

      312KB

    • MD5

      519a4bd72f7bc8a67c137c34d411b5be

    • SHA1

      37ca60f3bf1a4d7068cd19b1e3e9cf69afa269dc

    • SHA256

      61df65948553b5e1e385bcfa866cae9a30ace0e427ab57e455985988d30eee20

    • SHA512

      7b66bb5843e7b7f2ca95429c0bfd3dd049dc95346507cd0acb23947473daaf6e6b6cc45d59c7625f7e7e8c7a4ff6b00a3e8a7e25441865782f02b104b1db55e8

    • SSDEEP

      3072:hpX6/jiqnsLTpqy0ZXRtmYoGLA5///Px8S5gJXga5MydPAv7wqqTM:T6/jXsLT4y0ZXRtmUA5HXx150wa87a

    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

    • 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

    • Executes dropped EXE

    • Drops file in System32 directory

    • 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