Overview

overview

10

Static

static

b892a8227d...3b.exe

windows7-x64

10

b892a8227d...3b.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    b892a8227db787a523706138dd91bc6f1b73551bd9c74e00c76708e3a6fdd73b.exe

  • Size

    191KB

  • Sample

    221203-lafb3sab52

  • MD5

    28f298353029b619ba846b7612bae824

  • SHA1

    9bf697b49990f3611c8ea3b8aa4a3878d75a49f8

  • SHA256

    b892a8227db787a523706138dd91bc6f1b73551bd9c74e00c76708e3a6fdd73b

  • SHA512

    b2bee4be65e8f97106f10a0bc1bf7972f324243c84eeab3fd57c38f622fd7a73c02696c66f5e4628d3f1c87350d71490a8eeeea3bc163175c0050bdb495adb04

  • SSDEEP

    3072:TqbrZcEdN0DEIJ5+Z8NQmNOYg4qQLMYPFQUDA1plRs9E3AZxpR/n6H:Ta70DEr8dNOYg1A9DAH0vpt2

Score
10/10
tofseexmrigevasionminerpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

svartalfheim.top

jotunheim.name

Targets

    • Target

      b892a8227db787a523706138dd91bc6f1b73551bd9c74e00c76708e3a6fdd73b.exe

    • Size

      191KB

    • MD5

      28f298353029b619ba846b7612bae824

    • SHA1

      9bf697b49990f3611c8ea3b8aa4a3878d75a49f8

    • SHA256

      b892a8227db787a523706138dd91bc6f1b73551bd9c74e00c76708e3a6fdd73b

    • SHA512

      b2bee4be65e8f97106f10a0bc1bf7972f324243c84eeab3fd57c38f622fd7a73c02696c66f5e4628d3f1c87350d71490a8eeeea3bc163175c0050bdb495adb04

    • SSDEEP

      3072:TqbrZcEdN0DEIJ5+Z8NQmNOYg4qQLMYPFQUDA1plRs9E3AZxpR/n6H:Ta70DEr8dNOYg1A9DAH0vpt2

    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

    • 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

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