Resubmissions

28-05-2024 02:35

240528-c3cl8acg65 10

28-05-2024 02:34

240528-c2ncbsbe8y 10

Analysis

  • max time kernel
    110s
  • max time network
    150s
  • platform
    windows7_x64
  • resource
    win7-20231129-en
  • resource tags

    arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
  • submitted
    28-05-2024 02:34

General

  • Target

    SynapseX Revamped V1.5/SynapseXBootstrapper.exe

  • Size

    3.1MB

  • MD5

    9434a1822088cedbce057d280c235864

  • SHA1

    c09173a18e5ae2d9d38bd4d3d196adf1423f924e

  • SHA256

    de29011246319ec8b60774d8c4cad4e8299e27eba6dc7699cd257fbdda338336

  • SHA512

    7461b706ef796abc96d7f2549091061910fdf81a77ae0f8d0c20c5de870164410f5dd3b68e3e33a5bb9b77c3ccf59fd787164530b6d2d03688d4dceccb4fb632

  • SSDEEP

    49152:PvnI22SsaNYfdPBldt698dBcjHHeJ/uBx3ioGdyTHHB72eh2NT:PvI22SsaNYfdPBldt6+dBcjH4/X

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Windows Update

C2

skbidiooiilet-31205.portmap.host:31205

Mutex

b2f09b33-2e5b-4ffa-afbf-3f1aaed274a6

Attributes
  • encryption_key

    6F721445F7E0B1CF58980D84A9D49F4458D4EFD9

  • install_name

    Update.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    WindowsUpdate

  • subdirectory

    Windows Update

Signatures

  • Quasar RAT

    Quasar is an open source Remote Access Tool.

  • Quasar payload 3 IoCs
  • Executes dropped EXE 1 IoCs
  • Creates scheduled task(s) 1 TTPs 2 IoCs

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

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 36 IoCs
  • Suspicious use of FindShellTrayWindow 34 IoCs
  • Suspicious use of SendNotifyMessage 32 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

Processes

  • C:\Users\Admin\AppData\Local\Temp\SynapseX Revamped V1.5\SynapseXBootstrapper.exe
    "C:\Users\Admin\AppData\Local\Temp\SynapseX Revamped V1.5\SynapseXBootstrapper.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2316
    • C:\Windows\system32\schtasks.exe
      "schtasks" /create /tn "WindowsUpdate" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\Windows Update\Update.exe" /rl HIGHEST /f
      2⤵
      • Creates scheduled task(s)
      PID:2144
    • C:\Users\Admin\AppData\Roaming\Windows Update\Update.exe
      "C:\Users\Admin\AppData\Roaming\Windows Update\Update.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:3064
      • C:\Windows\system32\schtasks.exe
        "schtasks" /create /tn "WindowsUpdate" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\Windows Update\Update.exe" /rl HIGHEST /f
        3⤵
        • Creates scheduled task(s)
        PID:2256
  • C:\Windows\explorer.exe
    "C:\Windows\explorer.exe"
    1⤵
      PID:2732
    • 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 AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of WriteProcessMemory
      PID:1196
      • 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,0x7feefc59758,0x7feefc59768,0x7feefc59778
        2⤵
          PID:1652
        • 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=1144 --field-trial-handle=1224,i,928605032205381441,8251503529747388054,131072 /prefetch:2
          2⤵
            PID:940
          • 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=1520 --field-trial-handle=1224,i,928605032205381441,8251503529747388054,131072 /prefetch:8
            2⤵
              PID:2812
            • 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=1636 --field-trial-handle=1224,i,928605032205381441,8251503529747388054,131072 /prefetch:8
              2⤵
                PID:2972
              • 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=2252 --field-trial-handle=1224,i,928605032205381441,8251503529747388054,131072 /prefetch:1
                2⤵
                  PID:1716
                • 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=2264 --field-trial-handle=1224,i,928605032205381441,8251503529747388054,131072 /prefetch:1
                  2⤵
                    PID:660
                  • 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=1304 --field-trial-handle=1224,i,928605032205381441,8251503529747388054,131072 /prefetch:2
                    2⤵
                      PID:2932
                    • 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=3256 --field-trial-handle=1224,i,928605032205381441,8251503529747388054,131072 /prefetch:1
                      2⤵
                        PID:1736
                      • 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=3192 --field-trial-handle=1224,i,928605032205381441,8251503529747388054,131072 /prefetch:8
                        2⤵
                          PID:2604
                        • 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=3696 --field-trial-handle=1224,i,928605032205381441,8251503529747388054,131072 /prefetch:8
                          2⤵
                            PID:2352
                          • 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=3812 --field-trial-handle=1224,i,928605032205381441,8251503529747388054,131072 /prefetch:8
                            2⤵
                              PID:876
                            • 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=3924 --field-trial-handle=1224,i,928605032205381441,8251503529747388054,131072 /prefetch:8
                              2⤵
                                PID:2492
                              • 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=3900 --field-trial-handle=1224,i,928605032205381441,8251503529747388054,131072 /prefetch:8
                                2⤵
                                  PID:2188
                                • C:\Program Files\Google\Chrome\Application\chrome.exe
                                  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --enable-chrome-cart --disable-gpu-compositing --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=14 --mojo-platform-channel-handle=3808 --field-trial-handle=1224,i,928605032205381441,8251503529747388054,131072 /prefetch:1
                                  2⤵
                                    PID:2208
                                • 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:2388

                                  Network

                                  MITRE ATT&CK Enterprise v15

                                  Replay Monitor

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                                  Downloads

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

                                    Filesize

                                    68KB

                                    MD5

                                    29f65ba8e88c063813cc50a4ea544e93

                                    SHA1

                                    05a7040d5c127e68c25d81cc51271ffb8bef3568

                                    SHA256

                                    1ed81fa8dfb6999a9fedc6e779138ffd99568992e22d300acd181a6d2c8de184

                                    SHA512

                                    e29b2e92c496245bed3372578074407e8ef8882906ce10c35b3c8deebfefe01b5fd7f3030acaa693e175f4b7aca6cd7d8d10ae1c731b09c5fa19035e005de3aa

                                  • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Cache\Cache_Data\f_000004

                                    Filesize

                                    206KB

                                    MD5

                                    f998b8f6765b4c57936ada0bb2eb4a5a

                                    SHA1

                                    13fb29dc0968838653b8414a125c124023c001df

                                    SHA256

                                    374db366966d7b48782f352c78a0b3670ffec33ed046d931415034d6f93dcfef

                                    SHA512

                                    d340ae61467332f99e4606ef022ff71c9495b9d138a40cc7c58b3206be0d080b25f4e877a811a55f4320db9a7f52e39f88f1aa426ba79fc5e78fc73dacf8c716

                                  • 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\Preferences

                                    Filesize

                                    5KB

                                    MD5

                                    c7821a19d2248f2736e61d831677674d

                                    SHA1

                                    14fbeabc383eb5175cb1cd0905ad5156ba8adb15

                                    SHA256

                                    953e06b5547351fff7984aec4a052e01fcdba797115d8b5d41538b7c9c00f251

                                    SHA512

                                    ad0635b1bd9c5c53396af1e4e7bc63d5d750b592c2d0de8c9a98c5ac93bea4dad9054edea234bc8b15d58b6f086b96847726790fd38395a645818c9e0e275c37

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

                                    Filesize

                                    5KB

                                    MD5

                                    f94098cf8262d84e0ef441e8d279d5a0

                                    SHA1

                                    818532d6a2d3c21485f6e5fb8594730cb497d8e6

                                    SHA256

                                    2557719c9682169b361ff30893c9ed462318ef5f3a7f57132de63542693c423d

                                    SHA512

                                    f01962a06a5414a83c8917970af7b11a97f929c3ab95cc991bc521e45a2d490c553bfb1730b1f116359e113151e7eef6fc6b171c49387dcfc6ef60b87934c73f

                                  • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\shared_proto_db\metadata\000007.dbtmp

                                    Filesize

                                    16B

                                    MD5

                                    18e723571b00fb1694a3bad6c78e4054

                                    SHA1

                                    afcc0ef32d46fe59e0483f9a3c891d3034d12f32

                                    SHA256

                                    8af72f43857550b01eab1019335772b367a17a9884a7a759fdf4fe6f272b90aa

                                    SHA512

                                    43bb0af7d3984012d2d67ca6b71f0201e5b948e6fe26a899641c4c6f066c59906d468ddf7f1df5ea5fa33c2bc5ea8219c0f2c82e0a5c365ad7581b898a8859e2

                                  • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\ShaderCache\data_1

                                    Filesize

                                    264KB

                                    MD5

                                    f50f89a0a91564d0b8a211f8921aa7de

                                    SHA1

                                    112403a17dd69d5b9018b8cede023cb3b54eab7d

                                    SHA256

                                    b1e963d702392fb7224786e7d56d43973e9b9efd1b89c17814d7c558ffc0cdec

                                    SHA512

                                    bf8cda48cf1ec4e73f0dd1d4fa5562af1836120214edb74957430cd3e4a2783e801fa3f4ed2afb375257caeed4abe958265237d6e0aacf35a9ede7a2e8898d58

                                  • C:\Users\Admin\AppData\Roaming\Windows Update\Update.exe

                                    Filesize

                                    3.1MB

                                    MD5

                                    9434a1822088cedbce057d280c235864

                                    SHA1

                                    c09173a18e5ae2d9d38bd4d3d196adf1423f924e

                                    SHA256

                                    de29011246319ec8b60774d8c4cad4e8299e27eba6dc7699cd257fbdda338336

                                    SHA512

                                    7461b706ef796abc96d7f2549091061910fdf81a77ae0f8d0c20c5de870164410f5dd3b68e3e33a5bb9b77c3ccf59fd787164530b6d2d03688d4dceccb4fb632

                                  • \??\pipe\crashpad_1196_HOZRBWKVNYJZFHBH

                                    MD5

                                    d41d8cd98f00b204e9800998ecf8427e

                                    SHA1

                                    da39a3ee5e6b4b0d3255bfef95601890afd80709

                                    SHA256

                                    e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

                                    SHA512

                                    cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

                                  • memory/2316-0-0x000007FEF5B43000-0x000007FEF5B44000-memory.dmp

                                    Filesize

                                    4KB

                                  • memory/2316-9-0x000007FEF5B40000-0x000007FEF652C000-memory.dmp

                                    Filesize

                                    9.9MB

                                  • memory/2316-2-0x000007FEF5B40000-0x000007FEF652C000-memory.dmp

                                    Filesize

                                    9.9MB

                                  • memory/2316-1-0x0000000000F30000-0x0000000001254000-memory.dmp

                                    Filesize

                                    3.1MB

                                  • memory/3064-8-0x00000000003D0000-0x00000000006F4000-memory.dmp

                                    Filesize

                                    3.1MB

                                  • memory/3064-13-0x000007FEF5B40000-0x000007FEF652C000-memory.dmp

                                    Filesize

                                    9.9MB

                                  • memory/3064-12-0x000007FEF5B40000-0x000007FEF652C000-memory.dmp

                                    Filesize

                                    9.9MB

                                  • memory/3064-10-0x000007FEF5B40000-0x000007FEF652C000-memory.dmp

                                    Filesize

                                    9.9MB

                                  • memory/3064-11-0x000007FEF5B40000-0x000007FEF652C000-memory.dmp

                                    Filesize

                                    9.9MB