Overview

overview

10

Static

static

5bcc5563c1...03.exe

windows7-x64

10

5bcc5563c1...03.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    5bcc5563c17c7805651b50c509b6862ef554948336fbec1f99f9059a65d6b703

  • Size

    98KB

  • Sample

    220801-t5sjwsdch9

  • MD5

    20e50f7c063b80d6b94ec00c32b474d1

  • SHA1

    ac92bbd2101938d52eb32b957269baa1679923ed

  • SHA256

    5bcc5563c17c7805651b50c509b6862ef554948336fbec1f99f9059a65d6b703

  • SHA512

    2d6aad089b0eed97a75a5134fde9ace1251da47f6796d92de1b58da6185ecd92b9043a730709e4f71ed7e6386b3b7d6a5dccfb2766996b74b4116dcf50e2b64a

Score
10/10
tofseeevasionpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

43.231.4.7

lazystax.ru

Targets

    • Target

      5bcc5563c17c7805651b50c509b6862ef554948336fbec1f99f9059a65d6b703

    • Size

      98KB

    • MD5

      20e50f7c063b80d6b94ec00c32b474d1

    • SHA1

      ac92bbd2101938d52eb32b957269baa1679923ed

    • SHA256

      5bcc5563c17c7805651b50c509b6862ef554948336fbec1f99f9059a65d6b703

    • SHA512

      2d6aad089b0eed97a75a5134fde9ace1251da47f6796d92de1b58da6185ecd92b9043a730709e4f71ed7e6386b3b7d6a5dccfb2766996b74b4116dcf50e2b64a

    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