Overview

overview

10

Static

static

1

file.exe

windows7-x64

10

file.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    file.exe

  • Size

    260KB

  • Sample

    230327-p476qsde32

  • MD5

    27a71ca98bf0136e20b7e7a20a59882e

  • SHA1

    06094ebd972ad233e649350872eda88b29cbffd7

  • SHA256

    6658d9ff2c6f57b948f1a4f0b66ee5bc19246f32102e60fe6503b3127e7041c3

  • SHA512

    1ef06faf3186ee15c75d950a4521bc79f4a5ac07aa6fceb83500392d1f5c1fc125ab663b50173076b4429c104c0d0c2b0c454e3ee62a1817f61e5d019ec97b0d

  • SSDEEP

    3072:nZ1JP7IfDzrsBrxknL2H0ZYlDJ1iAX6euVG4zE8E1m8L4QQXRb/YRj5WzXv:nJDIQBVknLM0Z2DJ1zk8481P4QQXx

Score
10/10
tofseexmrigevasionminerpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      file.exe

    • Size

      260KB

    • MD5

      27a71ca98bf0136e20b7e7a20a59882e

    • SHA1

      06094ebd972ad233e649350872eda88b29cbffd7

    • SHA256

      6658d9ff2c6f57b948f1a4f0b66ee5bc19246f32102e60fe6503b3127e7041c3

    • SHA512

      1ef06faf3186ee15c75d950a4521bc79f4a5ac07aa6fceb83500392d1f5c1fc125ab663b50173076b4429c104c0d0c2b0c454e3ee62a1817f61e5d019ec97b0d

    • SSDEEP

      3072:nZ1JP7IfDzrsBrxknL2H0ZYlDJ1iAX6euVG4zE8E1m8L4QQXRb/YRj5WzXv:nJDIQBVknLM0Z2DJ1zk8481P4QQXx

    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