Overview

overview

10

Static

static

3

531c2ef448...8e.exe

windows7-x64

10

531c2ef448...8e.exe

windows10-2004-x64

10

Sharing

Copy URL
Twitter E-mail

General

  • Target

    531c2ef448a0a783616805d90baa648e.exe

  • Size

    233KB

  • Sample

    230526-jjnnpsfa3v

  • MD5

    531c2ef448a0a783616805d90baa648e

  • SHA1

    930ac8c50ef9b89cfb090925a6606ed38e16f3f4

  • SHA256

    bdb1300eaa48c72e69b79d88bc6c877d26fd770fbd3a95c7684ecca4795e7b53

  • SHA512

    07d92e128846b552ef3694f1a3c085c97564439429a485ae5555d073197df7a68827fd5a84447ee8f81d06d6d861faa68601c763bd3c9fb048e100e2f16e74f6

  • SSDEEP

    3072:8kIlnYvQUkT2ynW7pWoxOxT+DmhtfNlc07j7AoxQTdVWfWS2X9Zo/D:T+wsMxO9+DwNq07n7QTjWfWNLo7

Score
10/10
tofseexmrigevasionminerpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      531c2ef448a0a783616805d90baa648e.exe

    • Size

      233KB

    • MD5

      531c2ef448a0a783616805d90baa648e

    • SHA1

      930ac8c50ef9b89cfb090925a6606ed38e16f3f4

    • SHA256

      bdb1300eaa48c72e69b79d88bc6c877d26fd770fbd3a95c7684ecca4795e7b53

    • SHA512

      07d92e128846b552ef3694f1a3c085c97564439429a485ae5555d073197df7a68827fd5a84447ee8f81d06d6d861faa68601c763bd3c9fb048e100e2f16e74f6

    • SSDEEP

      3072:8kIlnYvQUkT2ynW7pWoxOxT+DmhtfNlc07j7AoxQTdVWfWS2X9Zo/D:T+wsMxO9+DwNq07n7QTjWfWNLo7

    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

    • 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

    • Executes dropped EXE

    • 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