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

    245KB

  • Sample

    230612-bwf6dsba6z

  • MD5

    de716bcd69eaa397ec668a600e290613

  • SHA1

    4fe4841959d458f6389ad15767eaccaf13d013f8

  • SHA256

    2c56b7eecbb1f8bf1ffab07fe19f92dc17f91675cf518565c67bb06af8b11916

  • SHA512

    5713d38394dbe8d9233f44739f1d9a79a3d443a1ed43c48c4afe58019be87bb5c8b1c2d4f0ec1e64555418471adfbb653de0ba4e6c424d80c9ce3a224e29233b

  • SSDEEP

    3072:BpN/PqeipCA+QWm9coi7u7Tnt8x609HRFQ9UZqn5syBgBRe1fq3:Rn3i7eeMu7TnK5yewn56O1f

Score
10/10
tofseexmrigevasionminerpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      file

    • Size

      245KB

    • MD5

      de716bcd69eaa397ec668a600e290613

    • SHA1

      4fe4841959d458f6389ad15767eaccaf13d013f8

    • SHA256

      2c56b7eecbb1f8bf1ffab07fe19f92dc17f91675cf518565c67bb06af8b11916

    • SHA512

      5713d38394dbe8d9233f44739f1d9a79a3d443a1ed43c48c4afe58019be87bb5c8b1c2d4f0ec1e64555418471adfbb653de0ba4e6c424d80c9ce3a224e29233b

    • SSDEEP

      3072:BpN/PqeipCA+QWm9coi7u7Tnt8x609HRFQ9UZqn5syBgBRe1fq3:Rn3i7eeMu7TnK5yewn56O1f

    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