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

    221201-2fd9zagf54

  • MD5

    1a7bc27f692d3dbece161a99346cadb5

  • SHA1

    ee3480ed28ab3482e803132284714c0570000d2f

  • SHA256

    16b79fe0d333c0872196f9d07799700e7057cf9cb35245a950c3160cf3361a04

  • SHA512

    4d6983e26fcf16f2dd470bd32b2674a8ee88cf3c3c05d7567e208cfddd748c80c30665d3e54573b83cd35f978d80240de9f3c2632d33b24ab8be81816a555a21

  • SSDEEP

    3072:m+bPrk/IX42aIJ5ieMJu9FFG4SlTx3edF6fX4FvRs9E3AZxpR/3d:mcX42aTehNG4S1x3Dvpld

Score
10/10
tofseexmrigevasionminerpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

svartalfheim.top

jotunheim.name

Targets

    • Target

      file.exe

    • Size

      192KB

    • MD5

      1a7bc27f692d3dbece161a99346cadb5

    • SHA1

      ee3480ed28ab3482e803132284714c0570000d2f

    • SHA256

      16b79fe0d333c0872196f9d07799700e7057cf9cb35245a950c3160cf3361a04

    • SHA512

      4d6983e26fcf16f2dd470bd32b2674a8ee88cf3c3c05d7567e208cfddd748c80c30665d3e54573b83cd35f978d80240de9f3c2632d33b24ab8be81816a555a21

    • SSDEEP

      3072:m+bPrk/IX42aIJ5ieMJu9FFG4SlTx3edF6fX4FvRs9E3AZxpR/3d:mcX42aTehNG4S1x3Dvpld

    Score
    10/10
    tofseeevasionpersistencetrojanxmrigminer

    • 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.

    • 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