Overview

overview

10

Static

static

33dbfe82ab...4e.exe

windows7-x64

10

33dbfe82ab...4e.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    33dbfe82ab8f840bc7de23a02d6c7c08e98ca5e21d9bf1e53499baf3c3a1394e.exe

  • Size

    184KB

  • Sample

    221203-hlxtqadc49

  • MD5

    edbbbe07f8126eead83d073a73ab0da2

  • SHA1

    760c5e661efcfac013e0147263f80c2f2bf8be38

  • SHA256

    33dbfe82ab8f840bc7de23a02d6c7c08e98ca5e21d9bf1e53499baf3c3a1394e

  • SHA512

    fefe77cd0cdfc3952534bff4600758495c383bad07fa8415cbbd27a13fa1be7c915dcf505580a5b69ef5304335aadaf8c2573782fde154f152c8a0a2d688270d

  • SSDEEP

    3072:j3BMNdO3Do5EvQW5KicTuIFhNZbPdRFZw/mW8Kewj:1Mio5EGBuIFhNZbV5JKt

Score
10/10
tofseexmrigevasionminerpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

svartalfheim.top

jotunheim.name

Targets

    • Target

      33dbfe82ab8f840bc7de23a02d6c7c08e98ca5e21d9bf1e53499baf3c3a1394e.exe

    • Size

      184KB

    • MD5

      edbbbe07f8126eead83d073a73ab0da2

    • SHA1

      760c5e661efcfac013e0147263f80c2f2bf8be38

    • SHA256

      33dbfe82ab8f840bc7de23a02d6c7c08e98ca5e21d9bf1e53499baf3c3a1394e

    • SHA512

      fefe77cd0cdfc3952534bff4600758495c383bad07fa8415cbbd27a13fa1be7c915dcf505580a5b69ef5304335aadaf8c2573782fde154f152c8a0a2d688270d

    • SSDEEP

      3072:j3BMNdO3Do5EvQW5KicTuIFhNZbPdRFZw/mW8Kewj:1Mio5EGBuIFhNZbV5JKt

    Score
    10/10
    tofseexmrigevasionminerpersistencetrojan

    • 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.

    • 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

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