Overview

overview

10

Static

static

13.exe

windows7_x64

10

13.exe

windows10-2004_x64

10

Sharing

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General

  • Target

    13.php

  • Size

    263KB

  • Sample

    220611-tnz8eabge4

  • MD5

    448738e5f3bd240eea78408b4a700295

  • SHA1

    a5f673e08480399fc8b714ca5384c64f9efa85e4

  • SHA256

    27a1d52df4f2a964e70b9c36b5e08a18589463a44a828ab88cf67c44ba8ec82e

  • SHA512

    7c94cf9f2d004fa20cf3e3f5769e80d50d82fa485bbdf24a73f434ecfa827f1757e67357407df5228aa1437bca6258b82a3e1944549ae644cf3bc60a76bd3a14

Score
10/10
tofseexmrigevasionminerpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

svartalfheim.top

jotunheim.name

Targets

    • Target

      13.php

    • Size

      263KB

    • MD5

      448738e5f3bd240eea78408b4a700295

    • SHA1

      a5f673e08480399fc8b714ca5384c64f9efa85e4

    • SHA256

      27a1d52df4f2a964e70b9c36b5e08a18589463a44a828ab88cf67c44ba8ec82e

    • SHA512

      7c94cf9f2d004fa20cf3e3f5769e80d50d82fa485bbdf24a73f434ecfa827f1757e67357407df5228aa1437bca6258b82a3e1944549ae644cf3bc60a76bd3a14

    Score
    10/10
    tofseexmrigevasionminerpersistencetrojan

    • Tofsee

      Backdoor/botnet which carries out malicious activities based on commands from a C2 server.

      trojantofsee

    • Windows security bypass

      evasiontrojan

    • xmrig

      XMRig is a high performance, open source, cross platform CPU/GPU miner.

      minerxmrig

    • XMRig Miner Payload

      miner

    • 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

    • 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

    • 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