Overview

overview

10

Static

static

10

R0X-Built.exe

windows7-x64

10

R0X-Built.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    R0X-Built.bat

  • Size

    409KB

  • Sample

    240504-fvjmcaea4s

  • MD5

    baed4bf822391e30e4dbe2ae0ea3fcfe

  • SHA1

    d978134771b65bace600644691b4d30c893920e8

  • SHA256

    5ded8a15f37933b10dc5f2daea6c7ebbee3017da22d53f875acfa5882a318b6d

  • SHA512

    b428424cfe003421a7c0a5d21a06709e80ee35d8c0f0501be19d8250fad27c72fcd98b9290510de0dc1147915751383a2908f075592eb4f2b8258e090cf2c452

  • SSDEEP

    6144:OMS2pJAJcC0B6ezDDORUjySfNr3FHg60x4gQRbcdVsmAklsGEUGka9mC:jpyJcC+VzDDORm1rUQyiklFEUGka9mC

Score
10/10
quasarslavepersistencespywaretrojan

Malware Config

Extracted

Family

quasar

Version

3.1.5

Botnet

Slave

C2

centre-clan.gl.at.ply.gg:40354

Mutex

$Sxr-HfroCBO1JCip2IbHKX

Attributes
  • encryption_key

    2mXe0Epj621bYEM4YYhW

  • install_name

    $srr-powershell.exe

  • log_directory

    Logs

  • reconnect_delay

    1000

  • startup_key

    $srr-mstha

  • subdirectory

    Windows

Targets

    • Target

      R0X-Built.bat

    • Size

      409KB

    • MD5

      baed4bf822391e30e4dbe2ae0ea3fcfe

    • SHA1

      d978134771b65bace600644691b4d30c893920e8

    • SHA256

      5ded8a15f37933b10dc5f2daea6c7ebbee3017da22d53f875acfa5882a318b6d

    • SHA512

      b428424cfe003421a7c0a5d21a06709e80ee35d8c0f0501be19d8250fad27c72fcd98b9290510de0dc1147915751383a2908f075592eb4f2b8258e090cf2c452

    • SSDEEP

      6144:OMS2pJAJcC0B6ezDDORUjySfNr3FHg60x4gQRbcdVsmAklsGEUGka9mC:jpyJcC+VzDDORm1rUQyiklFEUGka9mC

    Score
    10/10
    quasarslavespywaretrojanpersistence

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

      trojanspywarequasar

    • Quasar payload

    • Suspicious use of NtCreateProcessExOtherParentProcess

    • Suspicious use of NtCreateUserProcessOtherParentProcess

    • Downloads MZ/PE file

    • Sets service image path in registry

      persistence

    • Checks BIOS information in registry

      BIOS information is often read in order to detect sandboxing environments.

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Executes dropped EXE

    • Loads dropped DLL

    • Legitimate hosting services abused for malware hosting/C2

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Scheduled Task/Job

1
T1053

Persistence

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Scheduled Task/Job

1
T1053

Privilege Escalation

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Scheduled Task/Job

1
T1053

Defense Evasion

Modify Registry

2
T1112

Credential Access

Discovery

Query Registry

6
T1012

System Information Discovery

6
T1082

Peripheral Device Discovery

1
T1120

Remote System Discovery

1
T1018

Lateral Movement

Collection

Exfiltration

Command and Control

Web Service

1
T1102

Impact

Resource Development

Reconnaissance

Tasks