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

    210KB

  • Sample

    230613-szsr2ahc8y

  • MD5

    b77532ec1efccdf8ad339e0db4a94526

  • SHA1

    bfe6a2ad2d18e5ad61c4bd1e7b5ee315b76f10b3

  • SHA256

    2897b33a90e8350a536169c6fd0d858bba5b33614f36c51eacf309a1a3bd6f36

  • SHA512

    612cd6adce901d970d4dbc645febf4e83d05c34e8d66e5ab211bf2f9818947f483b8347dbb9fba5e94bc0cc001ab1b082d8dd0005e081744ff54a01656e25e73

  • SSDEEP

    3072:+NbSwNggEjrcJq7GbPa9SZinvyXyFKMmFa5w2IqR:HgEjrcVD4SsvYyFNc+

Score
10/10
tofseexmrigevasionminerpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      file.exe

    • Size

      210KB

    • MD5

      b77532ec1efccdf8ad339e0db4a94526

    • SHA1

      bfe6a2ad2d18e5ad61c4bd1e7b5ee315b76f10b3

    • SHA256

      2897b33a90e8350a536169c6fd0d858bba5b33614f36c51eacf309a1a3bd6f36

    • SHA512

      612cd6adce901d970d4dbc645febf4e83d05c34e8d66e5ab211bf2f9818947f483b8347dbb9fba5e94bc0cc001ab1b082d8dd0005e081744ff54a01656e25e73

    • SSDEEP

      3072:+NbSwNggEjrcJq7GbPa9SZinvyXyFKMmFa5w2IqR:HgEjrcVD4SsvYyFNc+

    Score
    10/10
    tofseeevasionpersistencetrojanxmrigminer

    • Tofsee

      Backdoor/botnet which carries out malicious activities based on commands from a C2 server.

      trojantofsee

    • 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.

    • 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

Modify Registry

1
T1112

Credential Access

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Tasks