Overview

overview

10

Static

static

file.exe

windows7-x64

10

file.exe

windows10-2004-x64

10

Sharing

Copy URL
Twitter E-mail

General

  • Target

    file.exe

  • Size

    191KB

  • Sample

    221202-cj16gagc7y

  • MD5

    c0fe6d5734eeeba10c4362f371806db0

  • SHA1

    a00c31a557921590011de17b9ce81c0c0a4870b2

  • SHA256

    3ea6d76470b7e3a7b4a7c9425ed31f4c629ee5de1c8578752aca782aab759446

  • SHA512

    5d7cc93476d853c129875275fb1ee96cfbe42f687dd0396deb23f909bcc7229f6e9d43e5d0288bd61a7df9be1c12f3b72e5f336443aa20967dc9011f793f18a3

  • SSDEEP

    3072:ERssBRaXkknXI5x7w3b66HdEufngG/Rs9E3AZxpR/sbqYq:jXkkn67Fc5avpYqYq

Score
10/10
tofseexmrigevasionminerpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

svartalfheim.top

jotunheim.name

Targets

    • Target

      file.exe

    • Size

      191KB

    • MD5

      c0fe6d5734eeeba10c4362f371806db0

    • SHA1

      a00c31a557921590011de17b9ce81c0c0a4870b2

    • SHA256

      3ea6d76470b7e3a7b4a7c9425ed31f4c629ee5de1c8578752aca782aab759446

    • SHA512

      5d7cc93476d853c129875275fb1ee96cfbe42f687dd0396deb23f909bcc7229f6e9d43e5d0288bd61a7df9be1c12f3b72e5f336443aa20967dc9011f793f18a3

    • SSDEEP

      3072:ERssBRaXkknXI5x7w3b66HdEufngG/Rs9E3AZxpR/sbqYq:jXkkn67Fc5avpYqYq

    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