Overview

overview

10

Static

static

191f0b19b5...6d.exe

windows7_x64

10

191f0b19b5...6d.exe

windows10_x64

10

Sharing

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General

  • Target

    191f0b19b5e11dac84a8366d5aa12bf589e3952ee387d78da37b597e509cf76d

  • Size

    14.3MB

  • Sample

    201114-e8jj3y89s6

  • MD5

    3b94b0d0ed530d4399f2a01f3a2f663c

  • SHA1

    81caa4687ce7c88c6ae729c7e0cc97be63d13ed9

  • SHA256

    191f0b19b5e11dac84a8366d5aa12bf589e3952ee387d78da37b597e509cf76d

  • SHA512

    cd40da59b612db3a34aff0995f90974f3d6e541734a8099a5774ecfe89786a7cd782ef2b1126aa9a5e8192e490ab46dbeb45d8bdb616c47f31ca7b7ff0c72f60

Score
10/10
tofseeevasionpersistencetrojan

Malware Config

Targets

    • Target

      191f0b19b5e11dac84a8366d5aa12bf589e3952ee387d78da37b597e509cf76d

    • Size

      14.3MB

    • MD5

      3b94b0d0ed530d4399f2a01f3a2f663c

    • SHA1

      81caa4687ce7c88c6ae729c7e0cc97be63d13ed9

    • SHA256

      191f0b19b5e11dac84a8366d5aa12bf589e3952ee387d78da37b597e509cf76d

    • SHA512

      cd40da59b612db3a34aff0995f90974f3d6e541734a8099a5774ecfe89786a7cd782ef2b1126aa9a5e8192e490ab46dbeb45d8bdb616c47f31ca7b7ff0c72f60

    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

    • Deletes itself

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    • Drops file in System32 directory

    • Modifies service

      persistence

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

New Service

1
T1050

Modify Existing Service

2
T1031

Registry Run Keys / Startup Folder

1
T1060

Privilege Escalation

New Service

1
T1050

Defense Evasion

Disabling Security Tools

1
T1089

Modify Registry

3
T1112

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Tasks