Overview

overview

10

Static

static

1

9b8b81e118...37.exe

windows7-x64

10

9b8b81e118...37.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    6cc6e0f96c9436d423167dbeb71da2a7.bin

  • Size

    164KB

  • Sample

    230327-b26y1ada6t

  • MD5

    4c5f79a1b227aaeefd8cd01dc11648da

  • SHA1

    a9b01c0c4059894cc2e4239f9b29608f070642d3

  • SHA256

    f2bd435cf8e4226d0e54fff4e93786fef5455635adf4be51b8c7ad733df35510

  • SHA512

    4f6fae7793feb4f912c2f2eb4101e1c934246bfaae82bec43a6eee0fa1b9aa414221bbc6e96c294c6a13aacfa424eb61492e68ebfcafc6bb1e397e079ded1cb7

  • SSDEEP

    3072:pUahOAo1OEC911uV+kUwTq2v3l9LNo8kAWjvIuuSlOIWm/j8VVF:RhOtc10V+S73l9LNN5uTJ8VD

Score
10/10
tofseexmrigevasionminerpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      9b8b81e1185334bcf1d2c4a865e631c4b67ecca8d2795a6174cfa8cad721c737.exe

    • Size

      273KB

    • MD5

      6cc6e0f96c9436d423167dbeb71da2a7

    • SHA1

      074ffa92fb78dc09b4674e45fad70ce2082eeea3

    • SHA256

      9b8b81e1185334bcf1d2c4a865e631c4b67ecca8d2795a6174cfa8cad721c737

    • SHA512

      f6e97bf800a0436d27a7d059ddb8c6a49828957a3dd39d6ef9ce6c85a3fdab99d8bb035d0ae911f58512fd19c0a2caa4de905286e14529c57f8ff246c43aa0ac

    • SSDEEP

      3072:Ca+zzQ2vCRxuUxAIvKLpnmlKWAkcVgHZLYUlEC2UoXsAEsrTZAbW8dLJf/+yCJQO:moxueinmlF0UlhoXsjoZsW8ddETfz

    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