Overview

overview

10

Static

static

file.exe

windows7-x64

10

file.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    file.exe

  • Size

    192KB

  • Sample

    221201-26adpseb5w

  • MD5

    933744ea738c0d400192c7025863a7f3

  • SHA1

    e348e57a763e13690795c55966104286c961f771

  • SHA256

    8ef9103920fd0f2d79bcef4613cda20bfc1d3f5835a5dafd6d106c4756045696

  • SHA512

    5a25cf666ba676eea557b1095d3220631f0cea41c9a69ab9dee426142c6d46da4f4da641d1030171218abb6946148219386fed61eb7b387c4588fcbbb25da3b5

  • SSDEEP

    3072:7abW00U/432GqIJ5Vq3VhTttR0hfIcJA8M6Rs9E3AZxpR/lHT5b33mJ:7CK32GqD3VPoZ3AR3vpnTRHmJ

Score
10/10
tofseexmrigevasionminerpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

svartalfheim.top

jotunheim.name

Targets

    • Target

      file.exe

    • Size

      192KB

    • MD5

      933744ea738c0d400192c7025863a7f3

    • SHA1

      e348e57a763e13690795c55966104286c961f771

    • SHA256

      8ef9103920fd0f2d79bcef4613cda20bfc1d3f5835a5dafd6d106c4756045696

    • SHA512

      5a25cf666ba676eea557b1095d3220631f0cea41c9a69ab9dee426142c6d46da4f4da641d1030171218abb6946148219386fed61eb7b387c4588fcbbb25da3b5

    • SSDEEP

      3072:7abW00U/432GqIJ5Vq3VhTttR0hfIcJA8M6Rs9E3AZxpR/lHT5b33mJ:7CK32GqD3VPoZ3AR3vpnTRHmJ

    Score
    10/10
    tofseexmrigevasionminerpersistencetrojan

    • Tofsee

      Backdoor/botnet which carries out malicious activities based on commands from a C2 server.

      trojantofsee

    • xmrig

      XMRig is a high performance, open source, cross platform CPU/GPU miner.

      minerxmrig

    • XMRig Miner payload

      miner

    • Creates new service(s)

      persistence

    • Executes dropped EXE

    • 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

    • 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

Modify Registry

1
T1112

Credential Access

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Tasks