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

    260KB

  • Sample

    230327-fzaj8sdh2x

  • MD5

    2217a7dc1aa0b5ef18f73aeb4f996d2c

  • SHA1

    2a427ee930b5c575d1ba27eced532570260d515e

  • SHA256

    159ac8af8578d932513d407cfec08d07cc9ea3ff48797cfa96b7c9d45c530554

  • SHA512

    815a66ea25678898be26fe12573c490cb15d4ce3f633ca865d30692425862251a98291a0b705eb148b8017fe139def2620103786997aa836ef281bfd1ea5a8d9

  • SSDEEP

    3072:249jhOaFQDZL6Vh5Fe1uwXbylxgCt9IXiDusLjM1uKNcL+uqHs5xbtufPWQ:1CDZL85KuwGlqCt91D/A1Jm+g1

Score
10/10
tofseexmrigevasionminerpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      file.exe

    • Size

      260KB

    • MD5

      2217a7dc1aa0b5ef18f73aeb4f996d2c

    • SHA1

      2a427ee930b5c575d1ba27eced532570260d515e

    • SHA256

      159ac8af8578d932513d407cfec08d07cc9ea3ff48797cfa96b7c9d45c530554

    • SHA512

      815a66ea25678898be26fe12573c490cb15d4ce3f633ca865d30692425862251a98291a0b705eb148b8017fe139def2620103786997aa836ef281bfd1ea5a8d9

    • SSDEEP

      3072:249jhOaFQDZL6Vh5Fe1uwXbylxgCt9IXiDusLjM1uKNcL+uqHs5xbtufPWQ:1CDZL85KuwGlqCt91D/A1Jm+g1

    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