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

    299KB

  • Sample

    230206-1bwg1sfh84

  • MD5

    8715223621d5976639b97a5ddc2e5709

  • SHA1

    ae98afdb97ae8ebb0fd47f899c94c6401a7f3a0d

  • SHA256

    d34c1b52c165505b7cd0130deead88ef3493c1dd118689d9300b6f8d3e496ee9

  • SHA512

    22e11a71707019233d98bb4c518decccf117059339c139ad7820aff31cbb690958ff434d53f9555e43b5714cdc1150ce01a92785df382cb9a307e7b82e7269f9

  • SSDEEP

    6144:C0UmLTex+0dLoQ7ioyeUB1XOuQj9i7xah:CzmvI+0dL1a/Oljw7x

Score
10/10
tofseexmrigevasionminerpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

svartalfheim.top

jotunheim.name

Targets

    • Target

      file.exe

    • Size

      299KB

    • MD5

      8715223621d5976639b97a5ddc2e5709

    • SHA1

      ae98afdb97ae8ebb0fd47f899c94c6401a7f3a0d

    • SHA256

      d34c1b52c165505b7cd0130deead88ef3493c1dd118689d9300b6f8d3e496ee9

    • SHA512

      22e11a71707019233d98bb4c518decccf117059339c139ad7820aff31cbb690958ff434d53f9555e43b5714cdc1150ce01a92785df382cb9a307e7b82e7269f9

    • SSDEEP

      6144:C0UmLTex+0dLoQ7ioyeUB1XOuQj9i7xah:CzmvI+0dL1a/Oljw7x

    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