Analysis

  • max time kernel
    131s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220721-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220721-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25-07-2022 00:13

General

  • Target

    573c27f4e0c548e2019acee758099a4a3cdd903c27e884bc640c632cb56258cd.exe

  • Size

    1.6MB

  • MD5

    2c5dcf7821c1098be0c0fb0b9111b112

  • SHA1

    0d034ed0671d6f90b3be6f92fc010ae533bdcd05

  • SHA256

    573c27f4e0c548e2019acee758099a4a3cdd903c27e884bc640c632cb56258cd

  • SHA512

    5e0b5f4d7f5731844e8d68743ff5092549481e93e083763dd7315eb214aa5750bf0e12ad4fe0c7f56f437bffd70a5e4886f7cb475170a69377f2631658d9987b

Malware Config

Extracted

Family

quasar

Version

1.3.0.0

Botnet

Mine New

C2

manuel3.publicvm.com:1022

Mutex

QSR_MUTEX_z2tvmEKtJhCWkEoFqb

Attributes
  • encryption_key

    lzO7ipRSIXeoGW0A0XSN

  • install_name

    Client.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Quasar Client Startup

  • subdirectory

    SubDir

Extracted

Family

netwire

C2

manuel3.publicvm.com:3366

Attributes
  • activex_autorun

    false

  • copy_executable

    true

  • delete_original

    false

  • host_id

    HostId-%Rand%

  • install_path

    %AppData%\Install\Host.exe

  • keylogger_dir

    %AppData%\Logs\

  • lock_executable

    false

  • mutex

    KosdgdKb

  • offline_keylogger

    true

  • password

    Password

  • registry_autorun

    false

  • use_mutex

    true

Signatures

  • NetWire RAT payload 4 IoCs
  • Netwire

    Netwire is a RAT with main functionalities focused password stealing and keylogging, but also includes remote control capabilities as well.

  • Quasar RAT

    Quasar is an open source Remote Access Tool.

  • Quasar payload 7 IoCs
  • suricata: ET MALWARE Common RAT Connectivity Check Observed

    suricata: ET MALWARE Common RAT Connectivity Check Observed

  • Executes dropped EXE 4 IoCs
  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Looks up external IP address via web service 1 IoCs

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

  • AutoIT Executable 3 IoCs

    AutoIT scripts compiled to PE executables.

  • Suspicious use of SetThreadContext 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 19 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\573c27f4e0c548e2019acee758099a4a3cdd903c27e884bc640c632cb56258cd.exe
    "C:\Users\Admin\AppData\Local\Temp\573c27f4e0c548e2019acee758099a4a3cdd903c27e884bc640c632cb56258cd.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1588
    • C:\Users\Admin\AppData\Roaming\Client-built New Mine Quasar.exe
      "C:\Users\Admin\AppData\Roaming\Client-built New Mine Quasar.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      PID:4504
    • C:\Users\Admin\AppData\Local\Temp\573c27f4e0c548e2019acee758099a4a3cdd903c27e884bc640c632cb56258cd.exe
      "C:\Users\Admin\AppData\Local\Temp\573c27f4e0c548e2019acee758099a4a3cdd903c27e884bc640c632cb56258cd.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2380
      • C:\Users\Admin\AppData\Roaming\Install\Host.exe
        "C:\Users\Admin\AppData\Roaming\Install\Host.exe"
        3⤵
        • Executes dropped EXE
        • Checks computer location settings
        • Suspicious use of SetThreadContext
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of WriteProcessMemory
        PID:2668
        • C:\Users\Admin\AppData\Roaming\Client-built New Mine Quasar.exe
          "C:\Users\Admin\AppData\Roaming\Client-built New Mine Quasar.exe"
          4⤵
          • Executes dropped EXE
          PID:2536
        • C:\Users\Admin\AppData\Roaming\Install\Host.exe
          "C:\Users\Admin\AppData\Roaming\Install\Host.exe"
          4⤵
          • Executes dropped EXE
          PID:656

Network

MITRE ATT&CK Matrix ATT&CK v6

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Roaming\Client-built New Mine Quasar.exe
    Filesize

    349KB

    MD5

    dc1f074b41b4aa0ae4c5d1341a653299

    SHA1

    7ab804dbe6492e37fa880d12fc1102fead2faffb

    SHA256

    bb4bde3c20fb19218d7c58e07151f8b9006df18a793e8cd01a837a05d9d550f0

    SHA512

    fe70cee7b6ebf93d229f5a0be05bcd8ce2157d3aeba1fccd2390241121e0b57d6b72ff847327a5ebfc0b70cf2910d7714046fb1dd0d625ef3e42d8d32fbb049e

  • C:\Users\Admin\AppData\Roaming\Client-built New Mine Quasar.exe
    Filesize

    349KB

    MD5

    dc1f074b41b4aa0ae4c5d1341a653299

    SHA1

    7ab804dbe6492e37fa880d12fc1102fead2faffb

    SHA256

    bb4bde3c20fb19218d7c58e07151f8b9006df18a793e8cd01a837a05d9d550f0

    SHA512

    fe70cee7b6ebf93d229f5a0be05bcd8ce2157d3aeba1fccd2390241121e0b57d6b72ff847327a5ebfc0b70cf2910d7714046fb1dd0d625ef3e42d8d32fbb049e

  • C:\Users\Admin\AppData\Roaming\Client-built New Mine Quasar.exe
    Filesize

    349KB

    MD5

    dc1f074b41b4aa0ae4c5d1341a653299

    SHA1

    7ab804dbe6492e37fa880d12fc1102fead2faffb

    SHA256

    bb4bde3c20fb19218d7c58e07151f8b9006df18a793e8cd01a837a05d9d550f0

    SHA512

    fe70cee7b6ebf93d229f5a0be05bcd8ce2157d3aeba1fccd2390241121e0b57d6b72ff847327a5ebfc0b70cf2910d7714046fb1dd0d625ef3e42d8d32fbb049e

  • C:\Users\Admin\AppData\Roaming\Install\Host.exe
    Filesize

    1.6MB

    MD5

    2c5dcf7821c1098be0c0fb0b9111b112

    SHA1

    0d034ed0671d6f90b3be6f92fc010ae533bdcd05

    SHA256

    573c27f4e0c548e2019acee758099a4a3cdd903c27e884bc640c632cb56258cd

    SHA512

    5e0b5f4d7f5731844e8d68743ff5092549481e93e083763dd7315eb214aa5750bf0e12ad4fe0c7f56f437bffd70a5e4886f7cb475170a69377f2631658d9987b

  • C:\Users\Admin\AppData\Roaming\Install\Host.exe
    Filesize

    1.6MB

    MD5

    2c5dcf7821c1098be0c0fb0b9111b112

    SHA1

    0d034ed0671d6f90b3be6f92fc010ae533bdcd05

    SHA256

    573c27f4e0c548e2019acee758099a4a3cdd903c27e884bc640c632cb56258cd

    SHA512

    5e0b5f4d7f5731844e8d68743ff5092549481e93e083763dd7315eb214aa5750bf0e12ad4fe0c7f56f437bffd70a5e4886f7cb475170a69377f2631658d9987b

  • C:\Users\Admin\AppData\Roaming\Install\Host.exe
    Filesize

    1.6MB

    MD5

    2c5dcf7821c1098be0c0fb0b9111b112

    SHA1

    0d034ed0671d6f90b3be6f92fc010ae533bdcd05

    SHA256

    573c27f4e0c548e2019acee758099a4a3cdd903c27e884bc640c632cb56258cd

    SHA512

    5e0b5f4d7f5731844e8d68743ff5092549481e93e083763dd7315eb214aa5750bf0e12ad4fe0c7f56f437bffd70a5e4886f7cb475170a69377f2631658d9987b

  • C:\Users\Admin\AppData\Roaming\server 2019.exe
    Filesize

    172KB

    MD5

    3146f4dd38096e1fe25844d859098f7b

    SHA1

    aa3f3cb481100feac6128288c30539d5dba4477c

    SHA256

    feef025eaebb31b58e46d7d0e8db5f0e0352f26bb210874a540b514545940365

    SHA512

    092f8a7b24b2c723b9d933de5ca8f32a8dbe46f31e6d343ce465c9a3f8c098d70fdc122b87db91e05f0108f3b5cebe142811fa4f39539df09e99869881ca3209

  • memory/656-152-0x0000000000000000-mapping.dmp
  • memory/656-153-0x0000000000400000-0x000000000042C000-memory.dmp
    Filesize

    176KB

  • memory/656-164-0x0000000000400000-0x000000000042C000-memory.dmp
    Filesize

    176KB

  • memory/2380-132-0x0000000000000000-mapping.dmp
  • memory/2380-133-0x0000000000A10000-0x0000000000A3C000-memory.dmp
    Filesize

    176KB

  • memory/2380-143-0x0000000000A10000-0x0000000000A3C000-memory.dmp
    Filesize

    176KB

  • memory/2536-150-0x0000000000000000-mapping.dmp
  • memory/2536-156-0x0000000004C40000-0x0000000004CD2000-memory.dmp
    Filesize

    584KB

  • memory/2536-165-0x0000000004CE0000-0x0000000004D46000-memory.dmp
    Filesize

    408KB

  • memory/2668-144-0x0000000000000000-mapping.dmp
  • memory/4504-149-0x0000000005320000-0x00000000058C4000-memory.dmp
    Filesize

    5.6MB

  • memory/4504-130-0x0000000000000000-mapping.dmp
  • memory/4504-147-0x00000000003C0000-0x000000000041E000-memory.dmp
    Filesize

    376KB

  • memory/4504-166-0x0000000005D30000-0x0000000005D42000-memory.dmp
    Filesize

    72KB

  • memory/4504-167-0x0000000006160000-0x000000000619C000-memory.dmp
    Filesize

    240KB

  • memory/4504-168-0x00000000061B0000-0x00000000061BA000-memory.dmp
    Filesize

    40KB