Analysis
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max time kernel
16s -
max time network
18s -
platform
windows10-1703_x64 -
resource
win10-20240404-en -
resource tags
arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-x64system -
submitted
10-06-2024 19:27
Static task
static1
General
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Target
E4Bootstrapper.exe
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Size
36KB
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MD5
dc618bb4a38e6e9347788e4aa58878b0
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SHA1
4ca204ca692bef38b5ba96bd74493be18bf68acd
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SHA256
9d7cf052119784f65aca998c6e0c87f662e9423e51e1a3475e83d24f3b3b47e3
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SHA512
57c15811aa70a2e3d4111aa45e02be778559a55703eea841e4a969cea48d4d8d05df8dd45009194b5103409b3db5848b4a9ff8235ad7c9ba52bfb5aac8e863b6
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SSDEEP
768:SpD7f29SqkmxqvmKtZjgtFJkkprUU2N9t096MYRrpYyah+:UD7ULo+KtZ0tj3prUdN3eK
Malware Config
Signatures
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Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs
Processes:
cd57e4c171d6e8f5ea8b8f824a6a7316.exedescription ioc process Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ cd57e4c171d6e8f5ea8b8f824a6a7316.exe -
Sets file to hidden 1 TTPs 2 IoCs
Modifies file attributes to stop it showing in Explorer etc.
Processes:
attrib.exeattrib.exepid process 344 attrib.exe 1596 attrib.exe -
Checks BIOS information in registry 2 TTPs 2 IoCs
BIOS information is often read in order to detect sandboxing environments.
Processes:
cd57e4c171d6e8f5ea8b8f824a6a7316.exedescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion cd57e4c171d6e8f5ea8b8f824a6a7316.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion cd57e4c171d6e8f5ea8b8f824a6a7316.exe -
Executes dropped EXE 3 IoCs
Processes:
E4.exeSolaraBootstrapper.execd57e4c171d6e8f5ea8b8f824a6a7316.exepid process 1316 E4.exe 4416 SolaraBootstrapper.exe 2032 cd57e4c171d6e8f5ea8b8f824a6a7316.exe -
Loads dropped DLL 5 IoCs
Processes:
cd57e4c171d6e8f5ea8b8f824a6a7316.exepid process 2032 cd57e4c171d6e8f5ea8b8f824a6a7316.exe 2032 cd57e4c171d6e8f5ea8b8f824a6a7316.exe 2032 cd57e4c171d6e8f5ea8b8f824a6a7316.exe 2032 cd57e4c171d6e8f5ea8b8f824a6a7316.exe 2032 cd57e4c171d6e8f5ea8b8f824a6a7316.exe -
Processes:
resource yara_rule C:\Users\Admin\AppData\Local\Temp\Solara.Dir\cd57e4c171d6e8f5ea8b8f824a6a7316.dll themida behavioral1/memory/2032-1500-0x0000000180000000-0x0000000180E54000-memory.dmp themida behavioral1/memory/2032-1501-0x0000000180000000-0x0000000180E54000-memory.dmp themida behavioral1/memory/2032-1503-0x0000000180000000-0x0000000180E54000-memory.dmp themida behavioral1/memory/2032-1502-0x0000000180000000-0x0000000180E54000-memory.dmp themida -
Processes:
cd57e4c171d6e8f5ea8b8f824a6a7316.exedescription ioc process Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA cd57e4c171d6e8f5ea8b8f824a6a7316.exe -
Legitimate hosting services abused for malware hosting/C2 1 TTPs 3 IoCs
Processes:
flow ioc 7 raw.githubusercontent.com 3 raw.githubusercontent.com 4 raw.githubusercontent.com -
Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
Processes:
cd57e4c171d6e8f5ea8b8f824a6a7316.exepid process 2032 cd57e4c171d6e8f5ea8b8f824a6a7316.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious behavior: EnumeratesProcesses 17 IoCs
Processes:
E4.exeSolaraBootstrapper.exepid process 1316 E4.exe 1316 E4.exe 1316 E4.exe 1316 E4.exe 1316 E4.exe 1316 E4.exe 1316 E4.exe 1316 E4.exe 1316 E4.exe 1316 E4.exe 1316 E4.exe 1316 E4.exe 1316 E4.exe 1316 E4.exe 1316 E4.exe 4416 SolaraBootstrapper.exe 4416 SolaraBootstrapper.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
E4.exeSolaraBootstrapper.exedescription pid process Token: SeDebugPrivilege 1316 E4.exe Token: SeDebugPrivilege 4416 SolaraBootstrapper.exe -
Suspicious use of WriteProcessMemory 11 IoCs
Processes:
E4Bootstrapper.exeE4.exeSolaraBootstrapper.exedescription pid process target process PID 2752 wrote to memory of 1316 2752 E4Bootstrapper.exe E4.exe PID 2752 wrote to memory of 1316 2752 E4Bootstrapper.exe E4.exe PID 2752 wrote to memory of 4416 2752 E4Bootstrapper.exe SolaraBootstrapper.exe PID 2752 wrote to memory of 4416 2752 E4Bootstrapper.exe SolaraBootstrapper.exe PID 2752 wrote to memory of 4416 2752 E4Bootstrapper.exe SolaraBootstrapper.exe PID 1316 wrote to memory of 344 1316 E4.exe attrib.exe PID 1316 wrote to memory of 344 1316 E4.exe attrib.exe PID 1316 wrote to memory of 1596 1316 E4.exe attrib.exe PID 1316 wrote to memory of 1596 1316 E4.exe attrib.exe PID 4416 wrote to memory of 2032 4416 SolaraBootstrapper.exe cd57e4c171d6e8f5ea8b8f824a6a7316.exe PID 4416 wrote to memory of 2032 4416 SolaraBootstrapper.exe cd57e4c171d6e8f5ea8b8f824a6a7316.exe -
Views/modifies file attributes 1 TTPs 2 IoCs
Processes:
attrib.exeattrib.exepid process 1596 attrib.exe 344 attrib.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\E4Bootstrapper.exe"C:\Users\Admin\AppData\Local\Temp\E4Bootstrapper.exe"1⤵
- Suspicious use of WriteProcessMemory
PID:2752 -
C:\Users\Admin\AppData\Local\Temp\E4.exe"C:\Users\Admin\AppData\Local\Temp\E4.exe"2⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1316 -
C:\Windows\System32\attrib.exe"C:\Windows\System32\attrib.exe" +s +h "C:\Users\Admin\AppData\Roaming\$77MicrosoftData"3⤵
- Sets file to hidden
- Views/modifies file attributes
PID:344 -
C:\Windows\System32\attrib.exe"C:\Windows\System32\attrib.exe" +s +h "C:\Users\Admin\AppData\Roaming\$77MicrosoftData\$77$77svchost.exe.exe"3⤵
- Sets file to hidden
- Views/modifies file attributes
PID:1596 -
C:\Users\Admin\AppData\Local\Temp\SolaraBootstrapper.exe"C:\Users\Admin\AppData\Local\Temp\SolaraBootstrapper.exe"2⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4416 -
C:\Users\Admin\AppData\Local\Temp\Solara.Dir\cd57e4c171d6e8f5ea8b8f824a6a7316.exe"C:\Users\Admin\AppData\Local\Temp\Solara.Dir\cd57e4c171d6e8f5ea8b8f824a6a7316.exe"3⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Executes dropped EXE
- Loads dropped DLL
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
PID:2032
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Local\Temp\E4.exeFilesize
40KB
MD51cfe818c59790fae5f9f14a9e8279216
SHA1a59f41a6d3992e2cd1911fb753a56d60d42c924e
SHA2568188936b9120d45b43047e23cd45ddd4f174454fbeba94d9cf4c3409b1419bc9
SHA512d189823dbefd4e6d4532bb0be86bd6441802e20eef05d7e963943da6faad0070cf2a314b1f74a9b970bcd666a3c42a46f6d72d4c1a1a335fc55ccd45ef2681ef
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C:\Users\Admin\AppData\Local\Temp\Solara.Dir\Microsoft.Web.WebView2.Core.dllFilesize
488KB
MD5851fee9a41856b588847cf8272645f58
SHA1ee185a1ff257c86eb19d30a191bf0695d5ac72a1
SHA2565e7faee6b8230ca3b97ce9542b914db3abbbd1cb14fd95a39497aaad4c1094ca
SHA512cf5c70984cf33e12cf57116da1f282a5bd6433c570831c185253d13463b0b9a0b9387d4d1bf4dddab3292a5d9ba96d66b6812e9d7ebc5eb35cb96eea2741348f
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C:\Users\Admin\AppData\Local\Temp\Solara.Dir\Microsoft.Web.WebView2.Wpf.dllFilesize
43KB
MD534ec990ed346ec6a4f14841b12280c20
SHA16587164274a1ae7f47bdb9d71d066b83241576f0
SHA2561e987b22cd011e4396a0805c73539586b67df172df75e3dded16a77d31850409
SHA512b565015ca4b11b79ecbc8127f1fd40c986948050f1caefdd371d34ed2136af0aabf100863dc6fd16d67e3751d44ee13835ea9bf981ac0238165749c4987d1ae0
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C:\Users\Admin\AppData\Local\Temp\Solara.Dir\Monaco\fileaccess\node_modules\get-intrinsic\.nycrcFilesize
139B
MD5d0104f79f0b4f03bbcd3b287fa04cf8c
SHA154f9d7adf8943cb07f821435bb269eb4ba40ccc2
SHA256997785c50b0773e5e18bf15550fbf57823c634fefe623cd37b3c83696402ad0a
SHA512daf9b5445cfc02397f398adfa0258f2489b70699dfec6ca7e5b85afe5671fdcabe59edee332f718f5e5778feb1e301778dffe93bb28c1c0914f669659bad39c6
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C:\Users\Admin\AppData\Local\Temp\Solara.Dir\Monaco\fileaccess\node_modules\has-proto\.eslintrcFilesize
43B
MD5c28b0fe9be6e306cc2ad30fe00e3db10
SHA1af79c81bd61c9a937fca18425dd84cdf8317c8b9
SHA2560694050195fc694c5846b0a2a66b437ac775da988f0a779c55fb892597f7f641
SHA512e3eca17804522ffa4f41e836e76e397a310a20e8261a38115b67e8b644444153039d04198fb470f45be2997d2c7a72b15bd4771a02c741b3cbc072ea6ef432e9
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C:\Users\Admin\AppData\Local\Temp\Solara.Dir\Monaco\fileaccess\node_modules\hasown\.nycrcFilesize
216B
MD5c2ab942102236f987048d0d84d73d960
SHA195462172699187ac02eaec6074024b26e6d71cff
SHA256948366fea3b423a46366326d0bb2e54b08abd1cf0b243678ba6625740c40da5a
SHA512e36b20c16ceeb090750f3865efc8d7fd983ae4e8b41c30cc3865d2fd4925bf5902627e1f1ed46c0ff2453f076ef9de34be899ef57754b29cd158440071318479
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C:\Users\Admin\AppData\Local\Temp\Solara.Dir\Monaco\fileaccess\node_modules\vary\LICENSEFilesize
1KB
MD513babc4f212ce635d68da544339c962b
SHA14881ad2ec8eb2470a7049421047c6d076f48f1de
SHA256bd47ce7b88c7759630d1e2b9fcfa170a0f1fde522be09e13fb1581a79d090400
SHA51240e30174433408e0e2ed46d24373b12def47f545d9183b7bce28d4ddd8c8bb528075c7f20e118f37661db9f1bba358999d81a14425eb3e0a4a20865dfcb53182
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C:\Users\Admin\AppData\Local\Temp\Solara.Dir\WebView2Loader.dllFilesize
133KB
MD5a0bd0d1a66e7c7f1d97aedecdafb933f
SHA1dd109ac34beb8289030e4ec0a026297b793f64a3
SHA25679d7e45f8631e8d2541d01bfb5a49a3a090be72b3d465389a2d684680fee2e36
SHA5122a50ae5c7234a44b29f82ebc2e3cfed37bf69294eb00b2dc8905c61259975b2f3a059c67aeab862f002752454d195f7191d9b82b056f6ef22d6e1b0bb3673d50
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C:\Users\Admin\AppData\Local\Temp\Solara.Dir\Wpf.Ui.dllFilesize
5.2MB
MD5aead90ab96e2853f59be27c4ec1e4853
SHA143cdedde26488d3209e17efff9a51e1f944eb35f
SHA25646cfbe804b29c500ebc0b39372e64c4c8b4f7a8e9b220b5f26a9adf42fcb2aed
SHA512f5044f2ee63906287460b9adabfcf3c93c60b51c86549e33474c4d7f81c4f86cd03cd611df94de31804c53006977874b8deb67c4bf9ea1c2b70c459b3a44b38d
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C:\Users\Admin\AppData\Local\Temp\Solara.Dir\bin\path.txtFilesize
34B
MD50e2184f1c7464b6617329fb18f107b4f
SHA16f22f98471e33c9db10d6f6f1728e98852e25b8f
SHA256dbf5f44e1b84a298dbbcad3c31a617d2f6cfa08eb5d16e05a5c28726c574d4eb
SHA5128e745c0215d52e15702551f29efb882a5eba97b5f279ccc29293b1a9b1b8661bf71b548569f9a99fa35c35a15d1b6b288d3c381c1292418c36dc89e2fa0b3a37
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C:\Users\Admin\AppData\Local\Temp\Solara.Dir\cd57e4c171d6e8f5ea8b8f824a6a7316.dllFilesize
5.9MB
MD5987175c463ec9a5e76bab033cea9d859
SHA1ceed36975f4583a34c26150e045a97f5f019e769
SHA25624fca8dd76effd975d230f55eb107e1be6c03d658410274fe6340a2b3ec9075c
SHA5129851d254fef3fdfcd7b188893a9a547ed3f08eee82a72c273f13beb7d075beecd32e3c5c51f9e3135d7060fca71a2bf79dbdbb1a136549a9e408a6214feaa000
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C:\Users\Admin\AppData\Local\Temp\Solara.Dir\cd57e4c171d6e8f5ea8b8f824a6a7316.exeFilesize
85KB
MD5f8f4522d11178a26e97e2046f249dfa7
SHA18b591d9a37716e235260fb6b3f601e4ccbebf15d
SHA2563c372a8919c28dc76414b2f30da423c3e1018b1a8444527949ce20cc3fc93ed0
SHA51252ea881cad501cf1d5e8ac47355e862ac1bd39cb6e1ff3d362d392b6f2d676e74878832505d17a552aaa3bc8f3977da11fa3f9903722eedd23716fb46ddb7492
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C:\Users\Admin\AppData\Local\Temp\Solara.Dir\libcurl.dllFilesize
522KB
MD5e31f5136d91bad0fcbce053aac798a30
SHA1ee785d2546aec4803bcae08cdebfd5d168c42337
SHA256ee94e2201870536522047e6d7fe7b903a63cd2e13e20c8fffc86d0e95361e671
SHA512a1543eb1d10d25efb44f9eaa0673c82bfac5173055d04c0f3be4792984635a7c774df57a8e289f840627754a4e595b855d299070d469e0f1e637c3f35274abe6
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C:\Users\Admin\AppData\Local\Temp\SolaraBootstrapper.exeFilesize
13KB
MD56557bd5240397f026e675afb78544a26
SHA1839e683bf68703d373b6eac246f19386bb181713
SHA256a7fecfc225dfdd4e14dcd4d1b4ba1b9f8e4d1984f1cdd8cda3a9987e5d53c239
SHA512f2399d34898a4c0c201372d2dd084ee66a66a1c3eae949e568421fe7edada697468ef81f4fcab2afd61eaf97bcb98d6ade2d97295e2f674e93116d142e892e97
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\Users\Admin\AppData\Local\Temp\Solara.Dir\vcruntime140.dllFilesize
99KB
MD57a2b8cfcd543f6e4ebca43162b67d610
SHA1c1c45a326249bf0ccd2be2fbd412f1a62fb67024
SHA2567d7ca28235fba5603a7f40514a552ac7efaa67a5d5792bb06273916aa8565c5f
SHA512e38304fb9c5af855c1134f542adf72cde159fab64385533eafa5bb6e374f19b5a29c0cb5516fc5da5c0b5ac47c2f6420792e0ac8ddff11e749832a7b7f3eb5c8
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\Users\Admin\AppData\Local\Temp\Solara.Dir\zlib1.dllFilesize
113KB
MD575365924730b0b2c1a6ee9028ef07685
SHA1a10687c37deb2ce5422140b541a64ac15534250f
SHA256945e7f5d09938b7769a4e68f4ef01406e5af9f40db952cba05ddb3431dd1911b
SHA512c1e31c18903e657203ae847c9af601b1eb38efa95cb5fa7c1b75f84a2cba9023d08f1315c9bb2d59b53256dfdb3bac89930252138475491b21749471adc129a1
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memory/1316-15-0x00007FF8747A0000-0x00007FF87518C000-memory.dmpFilesize
9.9MB
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memory/1316-16-0x00007FF8747A0000-0x00007FF87518C000-memory.dmpFilesize
9.9MB
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memory/1316-13-0x0000000000350000-0x000000000035E000-memory.dmpFilesize
56KB
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memory/2032-1484-0x000001E36CE70000-0x000001E36D3AC000-memory.dmpFilesize
5.2MB
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memory/2032-1500-0x0000000180000000-0x0000000180E54000-memory.dmpFilesize
14.3MB
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memory/2032-1506-0x000001E371A60000-0x000001E371A98000-memory.dmpFilesize
224KB
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memory/2032-1487-0x000001E36CC70000-0x000001E36CCEE000-memory.dmpFilesize
504KB
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memory/2032-1489-0x000001E36A840000-0x000001E36A84E000-memory.dmpFilesize
56KB
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memory/2032-1485-0x000001E36CBB0000-0x000001E36CC68000-memory.dmpFilesize
736KB
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memory/2032-1482-0x000001E36A460000-0x000001E36A47A000-memory.dmpFilesize
104KB
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memory/2032-1505-0x000001E371880000-0x000001E371888000-memory.dmpFilesize
32KB
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memory/2032-1502-0x0000000180000000-0x0000000180E54000-memory.dmpFilesize
14.3MB
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memory/2032-1503-0x0000000180000000-0x0000000180E54000-memory.dmpFilesize
14.3MB
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memory/2032-1501-0x0000000180000000-0x0000000180E54000-memory.dmpFilesize
14.3MB
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memory/2752-14-0x00007FF8747A0000-0x00007FF87518C000-memory.dmpFilesize
9.9MB
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memory/2752-0-0x0000000000210000-0x0000000000220000-memory.dmpFilesize
64KB
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memory/2752-1-0x00007FF8747A3000-0x00007FF8747A4000-memory.dmpFilesize
4KB
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memory/2752-3-0x00007FF8747A0000-0x00007FF87518C000-memory.dmpFilesize
9.9MB
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memory/4416-20-0x0000000000F30000-0x0000000000F3A000-memory.dmpFilesize
40KB
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memory/4416-19-0x0000000000670000-0x000000000067A000-memory.dmpFilesize
40KB
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memory/4416-22-0x0000000005910000-0x0000000005922000-memory.dmpFilesize
72KB