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

    299KB

  • Sample

    230207-bncs1agh32

  • MD5

    1c5c5fcbb9411738d3e6945a538522c9

  • SHA1

    e9f3e00bb4f5a3035481d05d7429c825bd16ab7b

  • SHA256

    8009c5bc8df7fb418791fe8ec56e58ee257ef1dcddbe47a8dfe180b6fee3b390

  • SHA512

    e580b9531d14e3fe0264559d70f43b7d8a8a77ab32b52d3d5e919b96871af264b4886e55752e9feefa352746846ea1310cb5ef49cd3a81643b822e8d70878947

  • SSDEEP

    3072:3zb6bLKLLCeRmSULtjK0h13Di9+6QtXxp+q0rsL4spqIuQjiMTE5JOPa5H:j0KLLCdSuR1zis6QtXxYTN+qIuQj9ja

Score
10/10
tofseexmrigevasionminerpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

svartalfheim.top

jotunheim.name

Targets

    • Target

      file.exe

    • Size

      299KB

    • MD5

      1c5c5fcbb9411738d3e6945a538522c9

    • SHA1

      e9f3e00bb4f5a3035481d05d7429c825bd16ab7b

    • SHA256

      8009c5bc8df7fb418791fe8ec56e58ee257ef1dcddbe47a8dfe180b6fee3b390

    • SHA512

      e580b9531d14e3fe0264559d70f43b7d8a8a77ab32b52d3d5e919b96871af264b4886e55752e9feefa352746846ea1310cb5ef49cd3a81643b822e8d70878947

    • SSDEEP

      3072:3zb6bLKLLCeRmSULtjK0h13Di9+6QtXxp+q0rsL4spqIuQjiMTE5JOPa5H:j0KLLCdSuR1zis6QtXxYTN+qIuQj9ja

    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