Overview

overview

10

Static

static

oewhwalb.exe

windows7_x64

10

oewhwalb.exe

windows10_x64

10

Sharing

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General

  • Target

    oewhwalb.exe

  • Size

    10.1MB

  • Sample

    220123-vwfpeagbgj

  • MD5

    f6ee0e7fbe7677dd9f3b053e206fbd4c

  • SHA1

    5d561f69158620be0f283e919814a55c495163a5

  • SHA256

    8c505862e16dd60fe08e63fd75b3460f21201f77c19d0c4793a68a7b35f5f2e5

  • SHA512

    7d710ea59cf0ad5012ed2e3e83b5ca893b7925d5dcfc1bdaf1ce4091cdfeb0751e0935bd69e585d238c3791b9b01bfdd61a41cf6b8187b3b48d68905d1fad437

Score
10/10
tofseexmrigevasionminerpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

patmushta.info

ovicrush.cn

Targets

    • Target

      oewhwalb.exe

    • Size

      10.1MB

    • MD5

      f6ee0e7fbe7677dd9f3b053e206fbd4c

    • SHA1

      5d561f69158620be0f283e919814a55c495163a5

    • SHA256

      8c505862e16dd60fe08e63fd75b3460f21201f77c19d0c4793a68a7b35f5f2e5

    • SHA512

      7d710ea59cf0ad5012ed2e3e83b5ca893b7925d5dcfc1bdaf1ce4091cdfeb0751e0935bd69e585d238c3791b9b01bfdd61a41cf6b8187b3b48d68905d1fad437

    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

    • Executes dropped EXE

    • Modifies Windows Firewall

      evasion

    • Sets service image path in registry

      persistence

    • Deletes itself

    • Legitimate hosting services abused for malware hosting/C2

    • 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

System Information Discovery

1
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Web Service

1
T1102

Impact

Tasks