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

    250KB

  • Sample

    230327-sww1aagb5x

  • MD5

    6263d643c0d58b6c2a93a84b52305cab

  • SHA1

    e7170cb232b503e0f4e855cd971a4fb85b7fad01

  • SHA256

    e3b2d5d28090159d5f3e1587633085ece2fc54a369f2685252909f1bbb28cc3a

  • SHA512

    1c2ce485cd07663f3e60a22a9e9124f0d7029ed41909bd1cc455a4f05a40d73f850a2554e405276e203ed362bb995ae5781b51fb21faa1e86069936c741ee64c

  • SSDEEP

    3072:f15ld/jSIFzGdkYLYtKy+UUOrD+tVVe71rOFqdbRzSAvX0pj4yMvfj5qvEPbX:dLdDz+kYLgKbUpro81OFqLvqj4yMAvE

Score
10/10
tofseexmrigevasionminerpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      file.exe

    • Size

      250KB

    • MD5

      6263d643c0d58b6c2a93a84b52305cab

    • SHA1

      e7170cb232b503e0f4e855cd971a4fb85b7fad01

    • SHA256

      e3b2d5d28090159d5f3e1587633085ece2fc54a369f2685252909f1bbb28cc3a

    • SHA512

      1c2ce485cd07663f3e60a22a9e9124f0d7029ed41909bd1cc455a4f05a40d73f850a2554e405276e203ed362bb995ae5781b51fb21faa1e86069936c741ee64c

    • SSDEEP

      3072:f15ld/jSIFzGdkYLYtKy+UUOrD+tVVe71rOFqdbRzSAvX0pj4yMvfj5qvEPbX:dLdDz+kYLgKbUpro81OFqLvqj4yMAvE

    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