Overview

overview

10

Static

static

1ec1a5162c...34.exe

windows7_x64

10

1ec1a5162c...34.exe

windows10-2004_x64

10

Sharing

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General

  • Target

    1ec1a5162c3001a38670c7e524e8166d49f0e729587f69c6a9e7f248ec5e7634

  • Size

    102KB

  • Sample

    220612-ytt1ssdhgm

  • MD5

    a0c2bb718c96b2704660ef224a9ea05c

  • SHA1

    251f79cc124ead1c0e0f55a6886e4996e93fcf08

  • SHA256

    1ec1a5162c3001a38670c7e524e8166d49f0e729587f69c6a9e7f248ec5e7634

  • SHA512

    c81e4fa06a74d1a54eb6a2b2fd8f569765141edf6bec1e154838be184557fca5b353d30a618946c95007f95a085c80397ed67ed2e6856e1da556ce26e673d214

Score
10/10
tofseeevasionpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

43.231.4.7

lazystax.ru

Targets

    • Target

      1ec1a5162c3001a38670c7e524e8166d49f0e729587f69c6a9e7f248ec5e7634

    • Size

      102KB

    • MD5

      a0c2bb718c96b2704660ef224a9ea05c

    • SHA1

      251f79cc124ead1c0e0f55a6886e4996e93fcf08

    • SHA256

      1ec1a5162c3001a38670c7e524e8166d49f0e729587f69c6a9e7f248ec5e7634

    • SHA512

      c81e4fa06a74d1a54eb6a2b2fd8f569765141edf6bec1e154838be184557fca5b353d30a618946c95007f95a085c80397ed67ed2e6856e1da556ce26e673d214

    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