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

    300KB

  • Sample

    230206-12rxhsbc9x

  • MD5

    3dba1f894e241fc35d9fda026cdeca64

  • SHA1

    c2e429de760176e7d3818ac2a2f15e252d9af7e0

  • SHA256

    3fde34848ef2ba38845bc457267d36dceb79005b4c106c709180415ac7f768bf

  • SHA512

    d6921e8388fc77fbc6afe1612910b8cc2384956b9dc2c414da01c7b5eea13f427b60b5fb3599bc30387b63b44cc690226b48161007f31d559bc88e48c488c834

  • SSDEEP

    3072:CGrHb6bGnLjhRGpkDbsUJSaG9iW7HPiuQjiMTE5INmp0yQ0afZi:CeH1nLj2unI4W7HquQj9ULQ0ah

Score
10/10
tofseexmrigevasionminerpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

svartalfheim.top

jotunheim.name

Targets

    • Target

      file.exe

    • Size

      300KB

    • MD5

      3dba1f894e241fc35d9fda026cdeca64

    • SHA1

      c2e429de760176e7d3818ac2a2f15e252d9af7e0

    • SHA256

      3fde34848ef2ba38845bc457267d36dceb79005b4c106c709180415ac7f768bf

    • SHA512

      d6921e8388fc77fbc6afe1612910b8cc2384956b9dc2c414da01c7b5eea13f427b60b5fb3599bc30387b63b44cc690226b48161007f31d559bc88e48c488c834

    • SSDEEP

      3072:CGrHb6bGnLjhRGpkDbsUJSaG9iW7HPiuQjiMTE5INmp0yQ0afZi:CeH1nLj2unI4W7HquQj9ULQ0ah

    Score
    10/10
    tofseeevasionpersistencetrojanxmrigminer

    • 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