Analysis

  • max time kernel
    271s
  • max time network
    288s
  • platform
    windows7_x64
  • resource
    win7-20231129-en
  • resource tags

    arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
  • submitted
    02-06-2024 06:22

General

  • Target

    uni/Uni - Copy.exe

  • Size

    409KB

  • MD5

    b70fdac25a99501e3cae11f1b775249e

  • SHA1

    3c59226479bfdcd1b2927bcfb1a7516d4cb8dd71

  • SHA256

    51ff3eb450a786c1aaa75ff889f2fd256412a7b75d04277fdf9fcccc20e57246

  • SHA512

    43f0d5d6e5f0d5febba537c109ffdbc250bbb6e9725e635a43ec975b0353048eaeee50b6e9274cd5e072ea6b0cea32439bd37408b2528832f467f2075f74ca44

  • SSDEEP

    12288:gpbJjGut6AoE3hVVdFaC/eZPTMTDlpgfJCKuMsVs:oVaurMLcDlpRKai

Malware Config

Extracted

Family

quasar

Version

3.1.5

Botnet

SeroXen

C2

panel-slave.gl.at.ply.gg:57059

panel-slave.gl.at.ply.gg:27892

Mutex

$Sxr-rpL8EItHN3pqIQQVy2

Attributes
  • encryption_key

    Lme7VBS3l58VwLM69PNM

  • install_name

    Client.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    SeroXen

  • subdirectory

    SubDir

Signatures

  • Quasar RAT 3 IoCs

    Quasar is an open source Remote Access Tool.

  • Quasar payload 3 IoCs
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 2 IoCs
  • Looks up external IP address via web service 2 IoCs

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

  • Creates scheduled task(s) 1 TTPs 4 IoCs

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

  • Enumerates system info in registry 2 TTPs 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of FindShellTrayWindow 30 IoCs
  • Suspicious use of SendNotifyMessage 28 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\uni\Uni - Copy.exe
    "C:\Users\Admin\AppData\Local\Temp\uni\Uni - Copy.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3040
    • C:\Windows\SysWOW64\schtasks.exe
      "schtasks" /create /tn "SeroXen" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\uni\Uni - Copy.exe" /rl HIGHEST /f
      2⤵
      • Quasar RAT
      • Creates scheduled task(s)
      PID:2560
    • C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
      "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2644
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks" /create /tn "SeroXen" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
        3⤵
        • Creates scheduled task(s)
        PID:2448
      • C:\Users\Admin\AppData\Local\Temp\hQguSuOuTvvs.exe
        "C:\Users\Admin\AppData\Local\Temp\hQguSuOuTvvs.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetWindowsHookEx
        PID:2412
      • C:\Windows\SysWOW64\SCHTASKS.exe
        "SCHTASKS.exe" /create /tn "$77Client.exe" /tr "'C:\Users\Admin\AppData\Roaming\SubDir\Client.exe'" /sc onlogon /rl HIGHEST
        3⤵
        • Creates scheduled task(s)
        PID:2012
    • C:\Windows\SysWOW64\SCHTASKS.exe
      "SCHTASKS.exe" /create /tn "$77Uni - Copy.exe" /tr "'C:\Users\Admin\AppData\Local\Temp\uni\Uni - Copy.exe'" /sc onlogon /rl HIGHEST
      2⤵
      • Creates scheduled task(s)
      PID:2136
  • C:\Windows\system32\AUDIODG.EXE
    C:\Windows\system32\AUDIODG.EXE 0x58c
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1744
  • C:\Windows\SysWOW64\DllHost.exe
    C:\Windows\SysWOW64\DllHost.exe /Processid:{06622D85-6856-4460-8DE1-A81921B41C4B}
    1⤵
      PID:564
    • C:\Windows\SysWOW64\DllHost.exe
      C:\Windows\SysWOW64\DllHost.exe /Processid:{06622D85-6856-4460-8DE1-A81921B41C4B}
      1⤵
        PID:2680
      • C:\Windows\SysWOW64\DllHost.exe
        C:\Windows\SysWOW64\DllHost.exe /Processid:{3F6B5E16-092A-41ED-930B-0B4125D91D4E}
        1⤵
          PID:2460
        • C:\Program Files\Google\Chrome\Application\chrome.exe
          "C:\Program Files\Google\Chrome\Application\chrome.exe"
          1⤵
          • Enumerates system info in registry
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of FindShellTrayWindow
          • Suspicious use of SendNotifyMessage
          • Suspicious use of WriteProcessMemory
          PID:2568
          • C:\Program Files\Google\Chrome\Application\chrome.exe
            "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=crashpad-handler "--user-data-dir=C:\Users\Admin\AppData\Local\Google\Chrome\User Data" /prefetch:7 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Crashpad" "--metrics-dir=C:\Users\Admin\AppData\Local\Google\Chrome\User Data" --url=https://clients2.google.com/cr/report --annotation=channel= --annotation=plat=Win64 --annotation=prod=Chrome --annotation=ver=106.0.5249.119 --initial-client-data=0xc0,0xc4,0xc8,0x94,0xcc,0x7fef62a9758,0x7fef62a9768,0x7fef62a9778
            2⤵
              PID:1556
            • C:\Program Files\Google\Chrome\Application\chrome.exe
              "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=gpu-process --gpu-preferences=UAAAAAAAAADgAAAYAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAQAAAAAAAAAAAAAAAAAAAAAAAAAEgAAAAAAAAASAAAAAAAAAAYAAAAAgAAABAAAAAAAAAAGAAAAAAAAAAQAAAAAAAAAAAAAAAOAAAAEAAAAAAAAAABAAAADgAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=1156 --field-trial-handle=1288,i,3989939083166854710,5321358280132612406,131072 /prefetch:2
              2⤵
                PID:1784
              • C:\Program Files\Google\Chrome\Application\chrome.exe
                "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=1408 --field-trial-handle=1288,i,3989939083166854710,5321358280132612406,131072 /prefetch:8
                2⤵
                  PID:2188
                • C:\Program Files\Google\Chrome\Application\chrome.exe
                  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=storage.mojom.StorageService --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=1496 --field-trial-handle=1288,i,3989939083166854710,5321358280132612406,131072 /prefetch:8
                  2⤵
                    PID:2988
                  • C:\Program Files\Google\Chrome\Application\chrome.exe
                    "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --first-renderer-process --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=6 --mojo-platform-channel-handle=2016 --field-trial-handle=1288,i,3989939083166854710,5321358280132612406,131072 /prefetch:1
                    2⤵
                      PID:2516
                    • C:\Program Files\Google\Chrome\Application\chrome.exe
                      "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=5 --mojo-platform-channel-handle=2024 --field-trial-handle=1288,i,3989939083166854710,5321358280132612406,131072 /prefetch:1
                      2⤵
                        PID:2016
                      • C:\Program Files\Google\Chrome\Application\chrome.exe
                        "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=gpu-process --gpu-preferences=UAAAAAAAAADgAAAYAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAQAAAAAAAAAAAAAAAAAAAAAAAAAEgAAAAAAAAASAAAAAAAAAAYAAAAAgAAABAAAAAAAAAAGAAAAAAAAAAQAAAAAAAAAAAAAAAOAAAAEAAAAAAAAAABAAAADgAAAAgAAAAAAAAACAAAAAAAAAA= --use-gl=angle --use-angle=swiftshader-webgl --mojo-platform-channel-handle=1300 --field-trial-handle=1288,i,3989939083166854710,5321358280132612406,131072 /prefetch:2
                        2⤵
                          PID:1828
                        • C:\Program Files\Google\Chrome\Application\chrome.exe
                          "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --disable-gpu-compositing --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=8 --mojo-platform-channel-handle=3260 --field-trial-handle=1288,i,3989939083166854710,5321358280132612406,131072 /prefetch:1
                          2⤵
                            PID:2276
                          • C:\Program Files\Google\Chrome\Application\chrome.exe
                            "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=data_decoder.mojom.DataDecoderService --lang=en-US --service-sandbox-type=service --mojo-platform-channel-handle=3528 --field-trial-handle=1288,i,3989939083166854710,5321358280132612406,131072 /prefetch:8
                            2⤵
                              PID:1584
                            • C:\Program Files\Google\Chrome\Application\chrome.exe
                              "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=data_decoder.mojom.DataDecoderService --lang=en-US --service-sandbox-type=service --mojo-platform-channel-handle=3708 --field-trial-handle=1288,i,3989939083166854710,5321358280132612406,131072 /prefetch:8
                              2⤵
                                PID:860
                              • C:\Program Files\Google\Chrome\Application\chrome.exe
                                "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=data_decoder.mojom.DataDecoderService --lang=en-US --service-sandbox-type=service --mojo-platform-channel-handle=3716 --field-trial-handle=1288,i,3989939083166854710,5321358280132612406,131072 /prefetch:8
                                2⤵
                                  PID:2456
                                • C:\Program Files\Google\Chrome\Application\chrome.exe
                                  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=data_decoder.mojom.DataDecoderService --lang=en-US --service-sandbox-type=service --mojo-platform-channel-handle=4116 --field-trial-handle=1288,i,3989939083166854710,5321358280132612406,131072 /prefetch:8
                                  2⤵
                                    PID:2076
                                  • C:\Program Files\Google\Chrome\Application\chrome.exe
                                    "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=chrome.mojom.UtilWin --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=4196 --field-trial-handle=1288,i,3989939083166854710,5321358280132612406,131072 /prefetch:8
                                    2⤵
                                      PID:2528
                                  • C:\Program Files\Google\Chrome\Application\106.0.5249.119\elevation_service.exe
                                    "C:\Program Files\Google\Chrome\Application\106.0.5249.119\elevation_service.exe"
                                    1⤵
                                      PID:2612

                                    Network

                                    MITRE ATT&CK Matrix ATT&CK v13

                                    Execution

                                    Scheduled Task/Job

                                    1
                                    T1053

                                    Persistence

                                    Scheduled Task/Job

                                    1
                                    T1053

                                    Privilege Escalation

                                    Scheduled Task/Job

                                    1
                                    T1053

                                    Discovery

                                    Query Registry

                                    1
                                    T1012

                                    System Information Discovery

                                    1
                                    T1082

                                    Replay Monitor

                                    Loading Replay Monitor...

                                    Downloads

                                    • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015
                                      Filesize

                                      70KB

                                      MD5

                                      49aebf8cbd62d92ac215b2923fb1b9f5

                                      SHA1

                                      1723be06719828dda65ad804298d0431f6aff976

                                      SHA256

                                      b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

                                      SHA512

                                      bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

                                    • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\GCM Store\Encryption\000006.dbtmp
                                      Filesize

                                      16B

                                      MD5

                                      aefd77f47fb84fae5ea194496b44c67a

                                      SHA1

                                      dcfbb6a5b8d05662c4858664f81693bb7f803b82

                                      SHA256

                                      4166bf17b2da789b0d0cc5c74203041d98005f5d4ef88c27e8281e00148cd611

                                      SHA512

                                      b733d502138821948267a8b27401d7c0751e590e1298fda1428e663ccd02f55d0d2446ff4bc265bdcdc61f952d13c01524a5341bc86afc3c2cde1d8589b2e1c3

                                    • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\GPUCache\data_1
                                      Filesize

                                      264KB

                                      MD5

                                      f50f89a0a91564d0b8a211f8921aa7de

                                      SHA1

                                      112403a17dd69d5b9018b8cede023cb3b54eab7d

                                      SHA256

                                      b1e963d702392fb7224786e7d56d43973e9b9efd1b89c17814d7c558ffc0cdec

                                      SHA512

                                      bf8cda48cf1ec4e73f0dd1d4fa5562af1836120214edb74957430cd3e4a2783e801fa3f4ed2afb375257caeed4abe958265237d6e0aacf35a9ede7a2e8898d58

                                    • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Preferences
                                      Filesize

                                      5KB

                                      MD5

                                      ac3b9e37ee6c50654dd6650ba3428d34

                                      SHA1

                                      920ad8e9ba095338fd6241068784df0a1904c8a5

                                      SHA256

                                      26d0391cd9f1e5a1e644c875366b95519c1e04aadb24a989b9d6736c4fa5166d

                                      SHA512

                                      35cc7d11238a435b998b0af257a266cf5e7d8b58a87ffe52a2c4c2294689b552c2805d83ae5bad254590d47778a9f07aa3a667325b08af4b5fb6c5efbccc88ea

                                    • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Site Characteristics Database\000007.dbtmp
                                      Filesize

                                      16B

                                      MD5

                                      18e723571b00fb1694a3bad6c78e4054

                                      SHA1

                                      afcc0ef32d46fe59e0483f9a3c891d3034d12f32

                                      SHA256

                                      8af72f43857550b01eab1019335772b367a17a9884a7a759fdf4fe6f272b90aa

                                      SHA512

                                      43bb0af7d3984012d2d67ca6b71f0201e5b948e6fe26a899641c4c6f066c59906d468ddf7f1df5ea5fa33c2bc5ea8219c0f2c82e0a5c365ad7581b898a8859e2

                                    • C:\Users\Admin\AppData\Local\Temp\hQguSuOuTvvs.exe
                                      Filesize

                                      277KB

                                      MD5

                                      dac0c5b2380cbdd93b46763427c9f8df

                                      SHA1

                                      038089e1a0ac8375be797fc3ce7ae719abc72834

                                      SHA256

                                      d02538788fb57f568ece292f5fc20e9775c86d504de67f57e22534f84adc73c6

                                      SHA512

                                      05cc1f6bf25a6545a06c735ae7a4a7fc25489bdb9fbc8d5797be623982662c4a93cba2d20bfe14313ef1548eaaa691e55fabdd8e3d3e45de9ab42dc62f9a7023

                                    • \??\pipe\crashpad_2568_RZAEQBCWKAQMBOKM
                                      MD5

                                      d41d8cd98f00b204e9800998ecf8427e

                                      SHA1

                                      da39a3ee5e6b4b0d3255bfef95601890afd80709

                                      SHA256

                                      e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

                                      SHA512

                                      cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

                                    • \Users\Admin\AppData\Roaming\SubDir\Client.exe
                                      Filesize

                                      409KB

                                      MD5

                                      b70fdac25a99501e3cae11f1b775249e

                                      SHA1

                                      3c59226479bfdcd1b2927bcfb1a7516d4cb8dd71

                                      SHA256

                                      51ff3eb450a786c1aaa75ff889f2fd256412a7b75d04277fdf9fcccc20e57246

                                      SHA512

                                      43f0d5d6e5f0d5febba537c109ffdbc250bbb6e9725e635a43ec975b0353048eaeee50b6e9274cd5e072ea6b0cea32439bd37408b2528832f467f2075f74ca44

                                    • memory/2644-11-0x0000000074BF0000-0x00000000752DE000-memory.dmp
                                      Filesize

                                      6.9MB

                                    • memory/2644-16-0x0000000074BF0000-0x00000000752DE000-memory.dmp
                                      Filesize

                                      6.9MB

                                    • memory/2644-15-0x0000000074BF0000-0x00000000752DE000-memory.dmp
                                      Filesize

                                      6.9MB

                                    • memory/2644-12-0x0000000074BF0000-0x00000000752DE000-memory.dmp
                                      Filesize

                                      6.9MB

                                    • memory/2644-10-0x00000000000C0000-0x000000000012C000-memory.dmp
                                      Filesize

                                      432KB

                                    • memory/2644-99-0x0000000074BF0000-0x00000000752DE000-memory.dmp
                                      Filesize

                                      6.9MB

                                    • memory/3040-13-0x0000000074BF0000-0x00000000752DE000-memory.dmp
                                      Filesize

                                      6.9MB

                                    • memory/3040-0-0x0000000074BFE000-0x0000000074BFF000-memory.dmp
                                      Filesize

                                      4KB

                                    • memory/3040-2-0x0000000074BF0000-0x00000000752DE000-memory.dmp
                                      Filesize

                                      6.9MB

                                    • memory/3040-1-0x00000000008F0000-0x000000000095C000-memory.dmp
                                      Filesize

                                      432KB