Overview

overview

10

Static

static

44c063a5dd...5b.exe

windows7-x64

10

44c063a5dd...5b.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    44c063a5dd16b68fd21655158ce4f65b.exe

  • Size

    279KB

  • Sample

    220923-gx7bvsdcg5

  • MD5

    44c063a5dd16b68fd21655158ce4f65b

  • SHA1

    e68ecc0d23aad421e7ef4c956a5c9a6dbab2e711

  • SHA256

    bfb8326e9ff8342de2f793e97ef3c5a0be6a7cce114ef63c1ad22263a39238df

  • SHA512

    4a01fb57d1ea04bd12b484b8d6c31910accf829ce5dc0cb4f73e6906ad557751ee9b81c714b8f2bada1f91772c75cbf5284947bde237dee2a3c008fb7491c802

  • SSDEEP

    6144:21L7VFe8HLHAlCXGMOQsn3IkeMyA0qb408INVigavwVfNzC:21LbZslCXGMHsWMYA4NA+

Score
10/10
tofseexmrigevasionminerpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

svartalfheim.top

jotunheim.name

Targets

    • Target

      44c063a5dd16b68fd21655158ce4f65b.exe

    • Size

      279KB

    • MD5

      44c063a5dd16b68fd21655158ce4f65b

    • SHA1

      e68ecc0d23aad421e7ef4c956a5c9a6dbab2e711

    • SHA256

      bfb8326e9ff8342de2f793e97ef3c5a0be6a7cce114ef63c1ad22263a39238df

    • SHA512

      4a01fb57d1ea04bd12b484b8d6c31910accf829ce5dc0cb4f73e6906ad557751ee9b81c714b8f2bada1f91772c75cbf5284947bde237dee2a3c008fb7491c802

    • SSDEEP

      6144:21L7VFe8HLHAlCXGMOQsn3IkeMyA0qb408INVigavwVfNzC:21LbZslCXGMHsWMYA4NA+

    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