Overview

overview

10

Static

static

c5af074d1d...16.exe

windows7_x64

10

c5af074d1d...16.exe

windows10-2004_x64

10

Sharing

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General

  • Target

    c5af074d1dc7563538561414790ce838b29a04f80c877a0d3e235b83a2130d16

  • Size

    13.7MB

  • Sample

    220606-dyxx2adhb3

  • MD5

    5408cff5586901cfb35b5ed13505c161

  • SHA1

    e929d7dc906bdc0eb20c4009b085443bc7af996f

  • SHA256

    c5af074d1dc7563538561414790ce838b29a04f80c877a0d3e235b83a2130d16

  • SHA512

    f1f6bde7b47b13da6ede09ae7e25e1ac5444880cea3ed2bbad2a806ae7e80393998670febb7bbc0bd0221a3a9ce741b2a39ad7199ad561061e0545ae0966558c

Score
10/10
tofseeevasionpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

43.231.4.7

lazystax.ru

Targets

    • Target

      c5af074d1dc7563538561414790ce838b29a04f80c877a0d3e235b83a2130d16

    • Size

      13.7MB

    • MD5

      5408cff5586901cfb35b5ed13505c161

    • SHA1

      e929d7dc906bdc0eb20c4009b085443bc7af996f

    • SHA256

      c5af074d1dc7563538561414790ce838b29a04f80c877a0d3e235b83a2130d16

    • SHA512

      f1f6bde7b47b13da6ede09ae7e25e1ac5444880cea3ed2bbad2a806ae7e80393998670febb7bbc0bd0221a3a9ce741b2a39ad7199ad561061e0545ae0966558c

    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