Overview

overview

10

Static

static

1

file.exe

windows7-x64

10

file.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    file.exe

  • Size

    213KB

  • Sample

    230417-rmt9naee64

  • MD5

    d2094e5b150e93824c03c5de2a70a6f3

  • SHA1

    aec0ad2bba9c795f70a192f67a48b049ebfc1b4a

  • SHA256

    781d970efbd869d9f9d6133d4c5fd95e886be5d865be20520c4c9b646292a114

  • SHA512

    49094072b9f3a1e21b0c8d234ce1585a77c627567beba58c4ce3816546eeab634e702d33795b52b29576d6b7feb0a9ee422304bd41110987169568ab37386e60

  • SSDEEP

    6144:NB4zZU424TLgM23XjrgmETzpU3LvUUUv7iM:7cZY4TUM23TqV7

Score
10/10
tofseexmrigevasionminerpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      file.exe

    • Size

      213KB

    • MD5

      d2094e5b150e93824c03c5de2a70a6f3

    • SHA1

      aec0ad2bba9c795f70a192f67a48b049ebfc1b4a

    • SHA256

      781d970efbd869d9f9d6133d4c5fd95e886be5d865be20520c4c9b646292a114

    • SHA512

      49094072b9f3a1e21b0c8d234ce1585a77c627567beba58c4ce3816546eeab634e702d33795b52b29576d6b7feb0a9ee422304bd41110987169568ab37386e60

    • SSDEEP

      6144:NB4zZU424TLgM23XjrgmETzpU3LvUUUv7iM:7cZY4TUM23TqV7

    Score
    10/10
    tofseeevasionpersistencetrojanxmrigminer

    • 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