Overview

overview

10

Static

static

6e9b01ab84...db.exe

windows7_x64

10

6e9b01ab84...db.exe

windows10-2004_x64

10

Analysis

  • max time kernel
    151s
  • max time network
    159s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    20-05-2022 23:28

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General

  • Target

    6e9b01ab841c3b57bbdd4068ffed0f937bc370401b8cdcefc2dfa1dca130a9db.exe

  • Size

    2.2MB

  • MD5

    faa3ca0d0141f9fe88188504bc3bac89

  • SHA1

    edd03d0de17de2caef384daf792118cfdefc0fa8

  • SHA256

    6e9b01ab841c3b57bbdd4068ffed0f937bc370401b8cdcefc2dfa1dca130a9db

  • SHA512

    b5693333a3ae10dbf5707927d85ea8e96fbd668b822bd9a337b13df374957720db9c03e4d801d75244902f29a6bbb7dc882647f45fcd5ccf8d8d496307b85922

Score
10/10
quasaralekfuddevasionpersistencespywaresuricatatrojan

Malware Config

Extracted

Family

quasar

Version

1.4.0.0

Botnet

AlekFudd

C2

52.188.202.106:8888

Mutex

9QxkaRC5yCiT4nYveU

Attributes
  • encryption_key

    p22ObTAqvAaz7xZDWYTK

  • install_name

    Client.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Malwarebytes Corp.

  • subdirectory

    SubDir

Signatures

  • Quasar Payload 6 IoCs
  • Quasar RAT

    Quasar is an open source Remote Access Tool.

    trojanspywarequasar
  • suricata: ET MALWARE Common RAT Connectivity Check Observed

    suricata: ET MALWARE Common RAT Connectivity Check Observed

    suricata
  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs
    evasion
  • Checks BIOS information in registry 2 TTPs 6 IoCs

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

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Identifies Wine through registry keys 2 TTPs 3 IoCs

    Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

    evasion
  • Adds Run key to start application 2 TTPs 1 IoCs
    persistence
  • Looks up external IP address via web service 1 IoCs

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

  • Suspicious use of NtSetInformationThreadHideFromDebugger 3 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Creates scheduled task(s) 1 TTPs 2 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

    persistence
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\6e9b01ab841c3b57bbdd4068ffed0f937bc370401b8cdcefc2dfa1dca130a9db.exe
    "C:\Users\Admin\AppData\Local\Temp\6e9b01ab841c3b57bbdd4068ffed0f937bc370401b8cdcefc2dfa1dca130a9db.exe"
    1⤵
    • Checks BIOS information in registry
    • Checks computer location settings
    • Identifies Wine through registry keys
    • Adds Run key to start application
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4988
    • C:\Windows\SysWOW64\schtasks.exe
      "schtasks" /create /tn "Malwarebytes Corp." /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\6e9b01ab841c3b57bbdd4068ffed0f937bc370401b8cdcefc2dfa1dca130a9db.exe" /rl HIGHEST /f
      2⤵
      • Creates scheduled task(s)
      PID:3240
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /create /tn "WINDOWSSYSTEMHOST" /tr "C:\Users\Admin\AppData\Local\Temp\6e9b01ab841c3b57bbdd4068ffed0f937bc370401b8cdcefc2dfa1dca130a9db.exe" /sc MINUTE /MO 1
      2⤵
      • Creates scheduled task(s)
      PID:2672
  • C:\Users\Admin\AppData\Local\Temp\6e9b01ab841c3b57bbdd4068ffed0f937bc370401b8cdcefc2dfa1dca130a9db.exe
    C:\Users\Admin\AppData\Local\Temp\6e9b01ab841c3b57bbdd4068ffed0f937bc370401b8cdcefc2dfa1dca130a9db.exe
    1⤵
    • Checks BIOS information in registry
    • Identifies Wine through registry keys
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious behavior: EnumeratesProcesses
    PID:1152
  • C:\Users\Admin\AppData\Local\Temp\6e9b01ab841c3b57bbdd4068ffed0f937bc370401b8cdcefc2dfa1dca130a9db.exe
    C:\Users\Admin\AppData\Local\Temp\6e9b01ab841c3b57bbdd4068ffed0f937bc370401b8cdcefc2dfa1dca130a9db.exe
    1⤵
    • Checks BIOS information in registry
    • Identifies Wine through registry keys
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious behavior: EnumeratesProcesses
    PID:900

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1
T1053

Persistence

Registry Run Keys / Startup Folder

1
T1060

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Defense Evasion

Virtualization/Sandbox Evasion

2
T1497

Modify Registry

1
T1112

Credential Access

Discovery

Query Registry

4
T1012

Virtualization/Sandbox Evasion

2
T1497

System Information Discovery

3
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\6e9b01ab841c3b57bbdd4068ffed0f937bc370401b8cdcefc2dfa1dca130a9db.exe.log
    Filesize

    701B

    MD5

    5de8527438c860bfa3140dc420a03e52

    SHA1

    235af682986b3292f20d8d71a8671353f5d6e16d

    SHA256

    d9d92cd6e7a4507912965138b8d1eabb3f188f4dfcb61115ee99dc2c0fd43a92

    SHA512

    77c3a774a2235c55ad520f1bf0c71fa3d3f0e7cf478a78e0d4dd6d253ee12a9859acc9ee822664467387788a2655a18373c8fcf08ea0d001549d3d4391b00bf8

    Download Submit
  • memory/900-147-0x0000000000EB0000-0x000000000149A000-memory.dmp
    Filesize

    5.9MB

    Download
  • memory/900-146-0x0000000000EB0000-0x000000000149A000-memory.dmp
    Filesize

    5.9MB

    Download
  • memory/900-144-0x0000000077470000-0x0000000077613000-memory.dmp
    Filesize

    1.6MB

    Download
  • memory/1152-142-0x0000000000EB0000-0x000000000149A000-memory.dmp
    Filesize

    5.9MB

    Download
  • memory/1152-141-0x0000000000EB0000-0x000000000149A000-memory.dmp
    Filesize

    5.9MB

    Download
  • memory/1152-140-0x0000000077470000-0x0000000077613000-memory.dmp
    Filesize

    1.6MB

    Download
  • memory/2672-139-0x0000000000000000-mapping.dmp
    Download
  • memory/3240-138-0x0000000000000000-mapping.dmp
    Download
  • memory/4988-130-0x0000000077470000-0x0000000077613000-memory.dmp
    Filesize

    1.6MB

    Download
  • memory/4988-137-0x0000000008360000-0x000000000839C000-memory.dmp
    Filesize

    240KB

    Download
  • memory/4988-136-0x0000000007F40000-0x0000000007F52000-memory.dmp
    Filesize

    72KB

    Download
  • memory/4988-135-0x0000000007310000-0x0000000007376000-memory.dmp
    Filesize

    408KB

    Download
  • memory/4988-143-0x0000000008740000-0x000000000874A000-memory.dmp
    Filesize

    40KB

    Download
  • memory/4988-134-0x0000000007170000-0x0000000007202000-memory.dmp
    Filesize

    584KB

    Download
  • memory/4988-133-0x0000000007650000-0x0000000007BF4000-memory.dmp
    Filesize

    5.6MB

    Download
  • memory/4988-132-0x0000000000EB0000-0x000000000149A000-memory.dmp
    Filesize

    5.9MB

    Download
  • memory/4988-131-0x0000000000EB0000-0x000000000149A000-memory.dmp
    Filesize

    5.9MB

    Download