Overview

overview

10

Static

static

72541f5e94...2a.exe

windows7_x64

10

72541f5e94...2a.exe

windows10-2004_x64

10

Sharing

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General

  • Target

    72541f5e94fd59687c7a857bb531872a.exe

  • Size

    308KB

  • Sample

    220619-k7wvnadgfq

  • MD5

    72541f5e94fd59687c7a857bb531872a

  • SHA1

    e22abc6f1ee814ba56d09d9a539adbe2a9698b99

  • SHA256

    a3f9e37db86f9f1e0d9c58246cb3b75af495b6681e596d1a2c05920b56c39eb0

  • SHA512

    4aaab79e38d03d28b8bfac3f9e62741b61193940c3537d269de33432acc9136da428d30de089c7e6fbd75af2a1fda53c376f665ed0c1172aee8542c3647ae689

Score
10/10
tofseexmrigevasionminerpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

svartalfheim.top

jotunheim.name

Targets

    • Target

      72541f5e94fd59687c7a857bb531872a.exe

    • Size

      308KB

    • MD5

      72541f5e94fd59687c7a857bb531872a

    • SHA1

      e22abc6f1ee814ba56d09d9a539adbe2a9698b99

    • SHA256

      a3f9e37db86f9f1e0d9c58246cb3b75af495b6681e596d1a2c05920b56c39eb0

    • SHA512

      4aaab79e38d03d28b8bfac3f9e62741b61193940c3537d269de33432acc9136da428d30de089c7e6fbd75af2a1fda53c376f665ed0c1172aee8542c3647ae689

    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