Overview

overview

10

Static

static

skqrzrsh.exe

windows7-x64

10

skqrzrsh.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    skqrzrsh.exe

  • Size

    12.1MB

  • Sample

    220808-qcmldsbacr

  • MD5

    5906ac14bc45a1f39cb9eb790a1d3b27

  • SHA1

    9dd7593f1f478bce269d1eccf94b44113c8d708a

  • SHA256

    de5704d6579398a4b51f7458c105759c46096567661a26bffe1159ef11a16eb8

  • SHA512

    8f4c8bc4e2a2433fa93062d9592f434ada2ec4ec7cd0f3f19a1a94011f4ad13d61a906fcce65687af55870e82f25fa1def931438fbe04394e95de993d2361b7b

Score
10/10
tofseexmrigevasionminerpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

patmushta.info

ovicrush.cn

Targets

    • Target

      skqrzrsh.exe

    • Size

      12.1MB

    • MD5

      5906ac14bc45a1f39cb9eb790a1d3b27

    • SHA1

      9dd7593f1f478bce269d1eccf94b44113c8d708a

    • SHA256

      de5704d6579398a4b51f7458c105759c46096567661a26bffe1159ef11a16eb8

    • SHA512

      8f4c8bc4e2a2433fa93062d9592f434ada2ec4ec7cd0f3f19a1a94011f4ad13d61a906fcce65687af55870e82f25fa1def931438fbe04394e95de993d2361b7b

    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

    • 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

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