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-wr2azsfb99

  • MD5

    d85ac9e4a318a111a633603b59a678e1

  • SHA1

    ba5a2ce4a943803ad266ab79920e51ac1376f572

  • SHA256

    1c72c9334aabb179971f5b154fbc75245add5765a6f8cc2648df5b6248698623

  • SHA512

    da08eafc66990a1fb891db71a8c2a26553297c6a8b423ce6976b2893840f73d4c79365afddbd9af9d80cdf981b2da56b8323226c9a7d743bc090fee1048d09a4

  • SSDEEP

    3072:CoXb6bh/LvtDRGXjO8GLQiYkSX5DB6gkrIGk0QuQjiMTE5hoa1M:CaC/LFgXj7GNBSVB6gwjQuQj9ha

Score
10/10
tofseexmrigevasionminerpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

svartalfheim.top

jotunheim.name

Targets

    • Target

      file.exe

    • Size

      299KB

    • MD5

      d85ac9e4a318a111a633603b59a678e1

    • SHA1

      ba5a2ce4a943803ad266ab79920e51ac1376f572

    • SHA256

      1c72c9334aabb179971f5b154fbc75245add5765a6f8cc2648df5b6248698623

    • SHA512

      da08eafc66990a1fb891db71a8c2a26553297c6a8b423ce6976b2893840f73d4c79365afddbd9af9d80cdf981b2da56b8323226c9a7d743bc090fee1048d09a4

    • SSDEEP

      3072:CoXb6bh/LvtDRGXjO8GLQiYkSX5DB6gkrIGk0QuQjiMTE5hoa1M:CaC/LFgXj7GNBSVB6gwjQuQj9ha

    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