Overview

overview

10

Static

static

3b716928bf...60.exe

windows7_x64

10

3b716928bf...60.exe

windows10-2004_x64

10

Sharing

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General

  • Target

    3b716928bfac2bcc66212be3f9ab5a072ef620edf3e4b69148e4ecf14e634560

  • Size

    139KB

  • Sample

    220703-tx4xysafb4

  • MD5

    a2300b70e5420a971e380a21c4469387

  • SHA1

    3fbd333c6314e91f9adf89a1b32186156c6d34bb

  • SHA256

    3b716928bfac2bcc66212be3f9ab5a072ef620edf3e4b69148e4ecf14e634560

  • SHA512

    2fbab93c5e9c50d5a1d8a03a3e26b0d13f84cd442afe2cd35e51c900e8495fb873abd49da2e83e7df1318f5297fde44355755acc92e8f2176b1de6246c2f1a03

Score
10/10
tofseeevasionpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

43.231.4.7

lazystax.ru

Targets

    • Target

      3b716928bfac2bcc66212be3f9ab5a072ef620edf3e4b69148e4ecf14e634560

    • Size

      139KB

    • MD5

      a2300b70e5420a971e380a21c4469387

    • SHA1

      3fbd333c6314e91f9adf89a1b32186156c6d34bb

    • SHA256

      3b716928bfac2bcc66212be3f9ab5a072ef620edf3e4b69148e4ecf14e634560

    • SHA512

      2fbab93c5e9c50d5a1d8a03a3e26b0d13f84cd442afe2cd35e51c900e8495fb873abd49da2e83e7df1318f5297fde44355755acc92e8f2176b1de6246c2f1a03

    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