Overview

overview

10

Static

static

1

file.exe

windows7-x64

10

file.exe

windows10-2004-x64

10

Sharing

Copy URL
Twitter E-mail

General

  • Target

    file

  • Size

    265KB

  • Sample

    230327-1r3w2afd86

  • MD5

    cd8743aa91752e2e02571b2fe3a1c27b

  • SHA1

    3ba45028288170cfa3f137f5ce8924f0fbf6d36f

  • SHA256

    e3c7793b26883da4922c5bc91a769b0c1345badc04c967e5f89177aaf8364ea7

  • SHA512

    903cf7987825b983fcb7b87ef2900c61dbb5e92ded53191839be2ddf68cf09849fdd7399ae10766d9e5d1f5aa89dd1d4e32f6024e96bd7dac3645c5939017274

  • SSDEEP

    3072:FzSyRHyNFTsVxLZfLOAFGCluuTqoJUR1d5rFIjRu4xDYFLdBL5kMpDCU3wsUf2:9P5yNmVxLt4KmoaR1d5ralfxDYRSMp

Score
10/10
tofseexmrigevasionminerpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      file

    • Size

      265KB

    • MD5

      cd8743aa91752e2e02571b2fe3a1c27b

    • SHA1

      3ba45028288170cfa3f137f5ce8924f0fbf6d36f

    • SHA256

      e3c7793b26883da4922c5bc91a769b0c1345badc04c967e5f89177aaf8364ea7

    • SHA512

      903cf7987825b983fcb7b87ef2900c61dbb5e92ded53191839be2ddf68cf09849fdd7399ae10766d9e5d1f5aa89dd1d4e32f6024e96bd7dac3645c5939017274

    • SSDEEP

      3072:FzSyRHyNFTsVxLZfLOAFGCluuTqoJUR1d5rFIjRu4xDYFLdBL5kMpDCU3wsUf2:9P5yNmVxLt4KmoaR1d5ralfxDYRSMp

    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