Overview

overview

10

Static

static

3

file.exe

windows7-x64

10

file.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    file

  • Size

    319KB

  • Sample

    230504-m2arcadf4w

  • MD5

    fe0447a7d3da51ecc9bca3a1fae3f57b

  • SHA1

    2f59f1be792d9522ca337f45bda87f6a89758d1a

  • SHA256

    ae6bd7a2bfc9056b62e8ed38a36db8d67c72821b6d3e86bfa1153ff5d7498b0e

  • SHA512

    4eb744f823e2757b831d50a665f12ade8b30a317226dfd5a69bdf87c66391f9c71d87ef28cc32a71447110262b14c556635b25d863dd596936df1b53f60a2790

  • SSDEEP

    3072:ODMOZg29W5FRk75YqJbSNgktBN+CqYO5RirZh5Rn4UmxXAV9x/ht:QMOtu3kyqJ2tvqz4D4ZxXAjt

Score
10/10
tofseexmrigevasionminerpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      file

    • Size

      319KB

    • MD5

      fe0447a7d3da51ecc9bca3a1fae3f57b

    • SHA1

      2f59f1be792d9522ca337f45bda87f6a89758d1a

    • SHA256

      ae6bd7a2bfc9056b62e8ed38a36db8d67c72821b6d3e86bfa1153ff5d7498b0e

    • SHA512

      4eb744f823e2757b831d50a665f12ade8b30a317226dfd5a69bdf87c66391f9c71d87ef28cc32a71447110262b14c556635b25d863dd596936df1b53f60a2790

    • SSDEEP

      3072:ODMOZg29W5FRk75YqJbSNgktBN+CqYO5RirZh5Rn4UmxXAV9x/ht:QMOtu3kyqJ2tvqz4D4ZxXAjt

    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

    • 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