Overview

overview

10

Static

static

file.exe

windows7-x64

10

file.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    file.exe

  • Size

    190KB

  • Sample

    221202-d3m9dsaa72

  • MD5

    5a09ace381848e5de39119429d59f200

  • SHA1

    e50ab0cbd9dfbd5f761ad5271af10007f109078e

  • SHA256

    b064c232f1bad3676d5c38c286792167977f4b22d759f38368e27a97860652b0

  • SHA512

    846696d1100cbbfdc378512ffb633a4de89db40add21ccad356f477636b7752a1c8af3436ccbf7a909b97d2c6e400bfdffc93f43452925ae4ec72f2a6253b21f

  • SSDEEP

    3072:igpbk+E2v/rI5YqEeNF23SuVZt+idXAnyCqk/Rs9E3AZxpR/6O7n:u2HjqTnju1+QXFLXvpHD

Score
10/10
tofseexmrigevasionminerpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

svartalfheim.top

jotunheim.name

Targets

    • Target

      file.exe

    • Size

      190KB

    • MD5

      5a09ace381848e5de39119429d59f200

    • SHA1

      e50ab0cbd9dfbd5f761ad5271af10007f109078e

    • SHA256

      b064c232f1bad3676d5c38c286792167977f4b22d759f38368e27a97860652b0

    • SHA512

      846696d1100cbbfdc378512ffb633a4de89db40add21ccad356f477636b7752a1c8af3436ccbf7a909b97d2c6e400bfdffc93f43452925ae4ec72f2a6253b21f

    • SSDEEP

      3072:igpbk+E2v/rI5YqEeNF23SuVZt+idXAnyCqk/Rs9E3AZxpR/6O7n:u2HjqTnju1+QXFLXvpHD

    Score
    10/10
    tofseexmrigevasionminerpersistencetrojan

    • 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

    • Executes dropped EXE

    • 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

    • 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