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

    292KB

  • Sample

    220731-fpq48shdb2

  • MD5

    73dce3e7861a21a660c098f08fcd09fa

  • SHA1

    2a555fece19e500f8c65e2b1e26fb6dbcd44981d

  • SHA256

    3c38e00f572800dfdcf676a141e4b98903977368f8870cd29221b3320b640ed4

  • SHA512

    9ffe934411c0f91a1e92884bfd455e6d0f1188ec5fb7368b134084008462a664ea438396d0161940ea6345e5952ae74dd9408c6f472eef46102890d50eb0fb50

Score
10/10
tofseexmrigevasionminerpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

svartalfheim.top

jotunheim.name

Targets

    • Target

      13.php

    • Size

      292KB

    • MD5

      73dce3e7861a21a660c098f08fcd09fa

    • SHA1

      2a555fece19e500f8c65e2b1e26fb6dbcd44981d

    • SHA256

      3c38e00f572800dfdcf676a141e4b98903977368f8870cd29221b3320b640ed4

    • SHA512

      9ffe934411c0f91a1e92884bfd455e6d0f1188ec5fb7368b134084008462a664ea438396d0161940ea6345e5952ae74dd9408c6f472eef46102890d50eb0fb50

    Score
    10/10
    tofseexmrigevasionminerpersistencetrojan

    • Tofsee

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

      trojantofsee

    • 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

    • 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

Modify Registry

1
T1112

Credential Access

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Tasks