Overview

overview

10

Static

static

6e44541948...a8.exe

windows7-x64

10

6e44541948...a8.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    6e445419480aa1d94571d25836caa196811ac6cf69e8789f440c62c545acfca8

  • Size

    132KB

  • Sample

    221201-3f9ljsbh73

  • MD5

    870be9c9ac7d0946a97d28d8d313118d

  • SHA1

    400cad5f57eaaf528a1b2082b507680abee8f1cd

  • SHA256

    d663da95ff3d6c348e3a723d687509573ab1e291d0ebb66c3952bce626235d9c

  • SHA512

    76ff99af28715888638dcd4b1f46b18383e99dd4f0cbb29032d326bcd7013e5529a9e920873f84754b29981ebbbd885fa2176bb8c71ca7b331f29d5a6427083f

  • SSDEEP

    3072:Ye/MWUJzLwUruwdi8fuj2aHUy3wQqm6503voJ1xl4jM/JYypEHKuKv:YTNJzdruN8o5As603v4zdI18

Score
10/10
tofseexmrigevasionminerpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

svartalfheim.top

jotunheim.name

Targets

    • Target

      6e445419480aa1d94571d25836caa196811ac6cf69e8789f440c62c545acfca8

    • Size

      185KB

    • MD5

      7bdae7930443f34eff0c18dd7b0d7d30

    • SHA1

      8476925b3b177521c7e3e5850ebe003d60252d29

    • SHA256

      6e445419480aa1d94571d25836caa196811ac6cf69e8789f440c62c545acfca8

    • SHA512

      80934829ea75974287351431fdcee145b798133018839ac9b031bba5da5a9924e5d7a7e8e6b32fc4f4604dc244adbd9f35f77ea9e3cd15afcb03099d6cb79357

    • SSDEEP

      3072:xe8M4yW09z+zn5xHUGooXncFKk097NDS2nj5L906Z4+t:lMD9zEoInq21S2P0

    Score
    10/10
    tofseeevasionpersistencetrojanxmrigminer

    • 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

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    • 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