Overview

overview

10

Static

static

fe8cb5b58a...5b.exe

windows7_x64

10

fe8cb5b58a...5b.exe

windows10_x64

10

Sharing

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General

  • Target

    fe8cb5b58a6e04b1877ba5d8f1c7b37fdc43a73ae8850daeea7eaefca2fad15b

  • Size

    13.2MB

  • Sample

    201115-5zsqkj2m1e

  • MD5

    32b51d4b10b95d049f96e329d77a87e0

  • SHA1

    c7edc30d62b156fc407dc914a726a19b3108b2e3

  • SHA256

    fe8cb5b58a6e04b1877ba5d8f1c7b37fdc43a73ae8850daeea7eaefca2fad15b

  • SHA512

    11408739911bcb93b75c909336fc88733c5702244efa62ae72d8f05276b80da69db362894620f81c323bfebbc0268028de1fe80c9dbf8c121fc598cdaf81a7c0

Score
10/10
tofseeevasionpersistencetrojan

Malware Config

Targets

    • Target

      fe8cb5b58a6e04b1877ba5d8f1c7b37fdc43a73ae8850daeea7eaefca2fad15b

    • Size

      13.2MB

    • MD5

      32b51d4b10b95d049f96e329d77a87e0

    • SHA1

      c7edc30d62b156fc407dc914a726a19b3108b2e3

    • SHA256

      fe8cb5b58a6e04b1877ba5d8f1c7b37fdc43a73ae8850daeea7eaefca2fad15b

    • SHA512

      11408739911bcb93b75c909336fc88733c5702244efa62ae72d8f05276b80da69db362894620f81c323bfebbc0268028de1fe80c9dbf8c121fc598cdaf81a7c0

    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