Overview

overview

10

Static

static

3

file.exe

windows7-x64

10

file.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    file.exe

  • Size

    197KB

  • Sample

    230614-3yetwseb28

  • MD5

    a8e180e8405aad36f842347a505aab7e

  • SHA1

    af1ebcf11365e9c8ff6baf464ea7a8d3e74b11ad

  • SHA256

    9e6f8750e45bd4a16e7994f5fb27cd304b7b564d19ffe1f8bf3003fcc5737d42

  • SHA512

    a03061744fcd7056c6e32063b2ea9f2fa9ac9abcd53fb3c099bec2f47b8d325c51fca93a510fe6a6ffa4c9cb6632edbfa378b72219740fc16168cd897c216b55

  • SSDEEP

    3072:OARH7n2BtHA/FsO7y8Bam5RtTjub5h7cQR+b+96L:7RbnWC/FZymaMRtHmh3e+

Score
10/10
tofseexmrigevasionminerpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      file.exe

    • Size

      197KB

    • MD5

      a8e180e8405aad36f842347a505aab7e

    • SHA1

      af1ebcf11365e9c8ff6baf464ea7a8d3e74b11ad

    • SHA256

      9e6f8750e45bd4a16e7994f5fb27cd304b7b564d19ffe1f8bf3003fcc5737d42

    • SHA512

      a03061744fcd7056c6e32063b2ea9f2fa9ac9abcd53fb3c099bec2f47b8d325c51fca93a510fe6a6ffa4c9cb6632edbfa378b72219740fc16168cd897c216b55

    • SSDEEP

      3072:OARH7n2BtHA/FsO7y8Bam5RtTjub5h7cQR+b+96L:7RbnWC/FZymaMRtHmh3e+

    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

    • 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

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