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

    321KB

  • Sample

    230206-sfl55see56

  • MD5

    2f14b44502bac1a189183ac0b94374c9

  • SHA1

    ea2e058c7358ae74614e921deea811e574190261

  • SHA256

    013cdab5709380b9864ffdcdbef544167f59de3e309b6aefdd7b6ce642ba80a8

  • SHA512

    0e63ebf899833ff4bc3047c4a797e10c0677ca1d25813cf1f087e4721461b239f0ce23328a0a26e9a5878195d41551bb6d7a0dea1f83809b778ca0333b3a315b

  • SSDEEP

    3072:2dz+3bLnqTBtYvRKsJw8BPgqXqcLU5Xn6z5xzvv9NjHC1//+sxA7r25qMV+v3:s8LstY8sJ/b9L8Ut9HClRkSi

Score
10/10
tofseexmrigevasionminerpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

svartalfheim.top

jotunheim.name

Targets

    • Target

      file.exe

    • Size

      321KB

    • MD5

      2f14b44502bac1a189183ac0b94374c9

    • SHA1

      ea2e058c7358ae74614e921deea811e574190261

    • SHA256

      013cdab5709380b9864ffdcdbef544167f59de3e309b6aefdd7b6ce642ba80a8

    • SHA512

      0e63ebf899833ff4bc3047c4a797e10c0677ca1d25813cf1f087e4721461b239f0ce23328a0a26e9a5878195d41551bb6d7a0dea1f83809b778ca0333b3a315b

    • SSDEEP

      3072:2dz+3bLnqTBtYvRKsJw8BPgqXqcLU5Xn6z5xzvv9NjHC1//+sxA7r25qMV+v3:s8LstY8sJ/b9L8Ut9HClRkSi

    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

    • 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