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.exe

  • Size

    321KB

  • Sample

    230206-ttnfsseg93

  • MD5

    79c6ee0d6fd3628d6fce1d88cd84be8a

  • SHA1

    bce2ff105ad1f4a572ffd3c3447b175f7a7b25c5

  • SHA256

    31c7bc56ea8f6e485f1fa6db8e172f148603e9f16da5514fc788e88dbbb1b9c7

  • SHA512

    43c32d7617c5583ad693e362154ea1a15ddc4b337764d7966e88ae96ae6f8daee82feea65c5d32929a672caa114d3d4cfc569061d91b806b626e8cbfc628d11e

  • SSDEEP

    6144:NILrgS0Yx4gqxijowKofP2uQj9xRwaM5:NIPgU4gqxSKoX2ljGD

Score
10/10
tofseexmrigevasionminerpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

svartalfheim.top

jotunheim.name

Targets

    • Target

      file.exe

    • Size

      321KB

    • MD5

      79c6ee0d6fd3628d6fce1d88cd84be8a

    • SHA1

      bce2ff105ad1f4a572ffd3c3447b175f7a7b25c5

    • SHA256

      31c7bc56ea8f6e485f1fa6db8e172f148603e9f16da5514fc788e88dbbb1b9c7

    • SHA512

      43c32d7617c5583ad693e362154ea1a15ddc4b337764d7966e88ae96ae6f8daee82feea65c5d32929a672caa114d3d4cfc569061d91b806b626e8cbfc628d11e

    • SSDEEP

      6144:NILrgS0Yx4gqxijowKofP2uQj9xRwaM5:NIPgU4gqxSKoX2ljGD

    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