Analysis
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max time kernel
106s -
max time network
111s -
platform
windows10-2004_x64 -
resource
win10v2004-20250207-de -
resource tags
arch:x64arch:x86image:win10v2004-20250207-delocale:de-deos:windows10-2004-x64systemwindows -
submitted
09-02-2025 16:29
Static task
static1
Behavioral task
behavioral1
Sample
Bootstrapper.exe
Resource
win7-20250207-de
Behavioral task
behavioral2
Sample
Bootstrapper.exe
Resource
win10v2004-20250207-de
General
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Target
Bootstrapper.exe
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Size
800KB
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MD5
02c70d9d6696950c198db93b7f6a835e
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SHA1
30231a467a49cc37768eea0f55f4bea1cbfb48e2
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SHA256
8f2e28588f2303bd8d7a9b0c3ff6a9cb16fa93f8ddc9c5e0666a8c12d6880ee3
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SHA512
431d9b9918553bff4f4a5bc2a5e7b7015f8ad0e2d390bb4d5264d08983372424156524ef5587b24b67d1226856fc630aaca08edc8113097e0094501b4f08efeb
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SSDEEP
12288:qhd8cjaLXVh84wEFkW1mocaBj6WtiRPpptHxQ0z:2ycjar84w5W4ocaBj6y2tHDz
Malware Config
Signatures
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Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs
description ioc Process Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ Solara.exe -
pid Process 2436 powershell.exe 1524 powershell.exe -
Downloads MZ/PE file 2 IoCs
flow pid Process 40 2760 Process not Found 47 3808 Bootstrapper.exe -
Checks BIOS information in registry 2 TTPs 2 IoCs
BIOS information is often read in order to detect sandboxing environments.
description ioc Process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion Solara.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion Solara.exe -
Checks computer location settings 2 TTPs 2 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-3311063739-2594902809-44604183-1000\Control Panel\International\Geo\Nation Bootstrapper.exe Key value queried \REGISTRY\USER\S-1-5-21-3311063739-2594902809-44604183-1000\Control Panel\International\Geo\Nation BootstrapperV2.19.exe -
Executes dropped EXE 2 IoCs
pid Process 2616 BootstrapperV2.19.exe 4444 Solara.exe -
Loads dropped DLL 2 IoCs
pid Process 4444 Solara.exe 4444 Solara.exe -
resource yara_rule behavioral2/files/0x0007000000023e4a-140.dat themida behavioral2/memory/4444-142-0x0000000180000000-0x0000000181111000-memory.dmp themida behavioral2/memory/4444-144-0x0000000180000000-0x0000000181111000-memory.dmp themida behavioral2/memory/4444-145-0x0000000180000000-0x0000000181111000-memory.dmp themida behavioral2/memory/4444-143-0x0000000180000000-0x0000000181111000-memory.dmp themida behavioral2/memory/4444-146-0x0000000180000000-0x0000000181111000-memory.dmp themida -
Unexpected DNS network traffic destination 28 IoCs
Network traffic to other servers than the configured DNS servers was detected on the DNS port.
description flow ioc pid Process Destination IP 55 1.0.0.1 1720 Process not Found Destination IP 75 1.0.0.1 4444 Solara.exe Destination IP 80 1.0.0.1 4444 Solara.exe Destination IP 106 1.0.0.1 1720 Process not Found Destination IP 115 1.0.0.1 4444 Solara.exe Destination IP 24 1.0.0.1 1720 Process not Found Destination IP 26 1.0.0.1 2616 BootstrapperV2.19.exe Destination IP 73 1.0.0.1 1720 Process not Found Destination IP 38 1.0.0.1 1720 Process not Found Destination IP 92 1.0.0.1 1720 Process not Found Destination IP 83 1.0.0.1 1720 Process not Found Destination IP 25 1.0.0.1 1720 Process not Found Destination IP 39 1.0.0.1 1720 Process not Found Destination IP 51 1.0.0.1 1720 Process not Found Destination IP 67 1.0.0.1 1720 Process not Found Destination IP 71 1.0.0.1 1720 Process not Found Destination IP 28 1.0.0.1 3908 MicrosoftEdgeUpdate.exe Destination IP 37 1.0.0.1 1720 Process not Found Destination IP 69 1.0.0.1 1720 Process not Found Destination IP 32 1.0.0.1 1720 Process not Found Destination IP 56 1.0.0.1 1720 Process not Found Destination IP 78 1.0.0.1 2616 BootstrapperV2.19.exe Destination IP 90 1.0.0.1 1720 Process not Found Destination IP 21 1.0.0.1 4444 Solara.exe Destination IP 46 1.0.0.1 1720 Process not Found Destination IP 81 1.0.0.1 1720 Process not Found Destination IP 91 1.0.0.1 4444 Solara.exe Destination IP 97 1.0.0.1 1720 Process not Found -
Checks whether UAC is enabled 1 TTPs 1 IoCs
description ioc Process Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA Solara.exe -
Legitimate hosting services abused for malware hosting/C2 1 TTPs 3 IoCs
flow ioc 80 pastebin.com 84 pastebin.com 85 pastebin.com -
Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
pid Process 4444 Solara.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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System Location Discovery: System Language Discovery 1 TTPs 1 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language MicrosoftEdgeUpdate.exe -
System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs
Adversaries may check for Internet connectivity on compromised systems.
pid Process 3908 MicrosoftEdgeUpdate.exe -
Gathers network information 2 TTPs 1 IoCs
Uses commandline utility to view network configuration.
pid Process 1924 ipconfig.exe -
Suspicious behavior: EnumeratesProcesses 5 IoCs
pid Process 2616 BootstrapperV2.19.exe 2436 powershell.exe 2436 powershell.exe 1524 powershell.exe 1524 powershell.exe -
Suspicious use of AdjustPrivilegeToken 47 IoCs
description pid Process Token: SeIncreaseQuotaPrivilege 2380 WMIC.exe Token: SeSecurityPrivilege 2380 WMIC.exe Token: SeTakeOwnershipPrivilege 2380 WMIC.exe Token: SeLoadDriverPrivilege 2380 WMIC.exe Token: SeSystemProfilePrivilege 2380 WMIC.exe Token: SeSystemtimePrivilege 2380 WMIC.exe Token: SeProfSingleProcessPrivilege 2380 WMIC.exe Token: SeIncBasePriorityPrivilege 2380 WMIC.exe Token: SeCreatePagefilePrivilege 2380 WMIC.exe Token: SeBackupPrivilege 2380 WMIC.exe Token: SeRestorePrivilege 2380 WMIC.exe Token: SeShutdownPrivilege 2380 WMIC.exe Token: SeDebugPrivilege 2380 WMIC.exe Token: SeSystemEnvironmentPrivilege 2380 WMIC.exe Token: SeRemoteShutdownPrivilege 2380 WMIC.exe Token: SeUndockPrivilege 2380 WMIC.exe Token: SeManageVolumePrivilege 2380 WMIC.exe Token: 33 2380 WMIC.exe Token: 34 2380 WMIC.exe Token: 35 2380 WMIC.exe Token: 36 2380 WMIC.exe Token: SeIncreaseQuotaPrivilege 2380 WMIC.exe Token: SeSecurityPrivilege 2380 WMIC.exe Token: SeTakeOwnershipPrivilege 2380 WMIC.exe Token: SeLoadDriverPrivilege 2380 WMIC.exe Token: SeSystemProfilePrivilege 2380 WMIC.exe Token: SeSystemtimePrivilege 2380 WMIC.exe Token: SeProfSingleProcessPrivilege 2380 WMIC.exe Token: SeIncBasePriorityPrivilege 2380 WMIC.exe Token: SeCreatePagefilePrivilege 2380 WMIC.exe Token: SeBackupPrivilege 2380 WMIC.exe Token: SeRestorePrivilege 2380 WMIC.exe Token: SeShutdownPrivilege 2380 WMIC.exe Token: SeDebugPrivilege 2380 WMIC.exe Token: SeSystemEnvironmentPrivilege 2380 WMIC.exe Token: SeRemoteShutdownPrivilege 2380 WMIC.exe Token: SeUndockPrivilege 2380 WMIC.exe Token: SeManageVolumePrivilege 2380 WMIC.exe Token: 33 2380 WMIC.exe Token: 34 2380 WMIC.exe Token: 35 2380 WMIC.exe Token: 36 2380 WMIC.exe Token: SeDebugPrivilege 3808 Bootstrapper.exe Token: SeDebugPrivilege 2616 BootstrapperV2.19.exe Token: SeDebugPrivilege 2436 powershell.exe Token: SeDebugPrivilege 1524 powershell.exe Token: SeDebugPrivilege 4444 Solara.exe -
Suspicious use of WriteProcessMemory 16 IoCs
description pid Process procid_target PID 3808 wrote to memory of 4988 3808 Bootstrapper.exe 88 PID 3808 wrote to memory of 4988 3808 Bootstrapper.exe 88 PID 4988 wrote to memory of 1924 4988 cmd.exe 90 PID 4988 wrote to memory of 1924 4988 cmd.exe 90 PID 3808 wrote to memory of 2600 3808 Bootstrapper.exe 94 PID 3808 wrote to memory of 2600 3808 Bootstrapper.exe 94 PID 2600 wrote to memory of 2380 2600 cmd.exe 96 PID 2600 wrote to memory of 2380 2600 cmd.exe 96 PID 3808 wrote to memory of 2616 3808 Bootstrapper.exe 102 PID 3808 wrote to memory of 2616 3808 Bootstrapper.exe 102 PID 2616 wrote to memory of 2436 2616 BootstrapperV2.19.exe 104 PID 2616 wrote to memory of 2436 2616 BootstrapperV2.19.exe 104 PID 2616 wrote to memory of 1524 2616 BootstrapperV2.19.exe 106 PID 2616 wrote to memory of 1524 2616 BootstrapperV2.19.exe 106 PID 2616 wrote to memory of 4444 2616 BootstrapperV2.19.exe 108 PID 2616 wrote to memory of 4444 2616 BootstrapperV2.19.exe 108 -
cURL User-Agent 8 IoCs
Uses User-Agent string associated with cURL utility.
description flow ioc HTTP User-Agent header 109 curl/8.9.1-DEV HTTP User-Agent header 117 curl/8.9.1-DEV HTTP User-Agent header 118 curl/8.9.1-DEV HTTP User-Agent header 94 curl/8.9.1-DEV HTTP User-Agent header 100 curl/8.9.1-DEV HTTP User-Agent header 101 curl/8.9.1-DEV HTTP User-Agent header 102 curl/8.9.1-DEV HTTP User-Agent header 108 curl/8.9.1-DEV
Processes
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C:\Users\Admin\AppData\Local\Temp\Bootstrapper.exe"C:\Users\Admin\AppData\Local\Temp\Bootstrapper.exe"1⤵
- Downloads MZ/PE file
- Checks computer location settings
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3808 -
C:\Windows\SYSTEM32\cmd.exe"cmd" /c ipconfig /all2⤵
- Suspicious use of WriteProcessMemory
PID:4988 -
C:\Windows\system32\ipconfig.exeipconfig /all3⤵
- Gathers network information
PID:1924
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C:\Windows\SYSTEM32\cmd.exe"cmd" /c wmic nicconfig where (IPEnabled=TRUE) call SetDNSServerSearchOrder ("1.1.1.1", "1.0.0.1")2⤵
- Suspicious use of WriteProcessMemory
PID:2600 -
C:\Windows\System32\Wbem\WMIC.exewmic nicconfig where (IPEnabled=TRUE) call SetDNSServerSearchOrder ("1.1.1.1", "1.0.0.1")3⤵
- Suspicious use of AdjustPrivilegeToken
PID:2380
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C:\Users\Admin\AppData\Local\Temp\BootstrapperV2.19.exe"C:\Users\Admin\AppData\Local\Temp\BootstrapperV2.19.exe" --oldBootstrapper "C:\Users\Admin\AppData\Local\Temp\Bootstrapper.exe" --isUpdate true2⤵
- Checks computer location settings
- Executes dropped EXE
- Unexpected DNS network traffic destination
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2616 -
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"powershell" -Command "Get-MpPreference | Select-Object -ExpandProperty ExclusionPath"3⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2436
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"powershell" -Command "Add-MpPreference -ExclusionPath 'C:\ProgramData\Solara'"3⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1524
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C:\ProgramData\Solara\Solara.exe"C:\ProgramData\Solara\Solara.exe" --bootstrapperPath "C:\Users\Admin\AppData\Local\Temp"3⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Executes dropped EXE
- Loads dropped DLL
- Unexpected DNS network traffic destination
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of AdjustPrivilegeToken
PID:4444
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C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe"C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe" /ping 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-PGFwcCBhcHBpZD0iezhBNjlEMzQ1LUQ1NjQtNDYzYy1BRkYxLUE2OUQ5RTUzMEY5Nn0iIHZlcnNpb249IjEyMy4wLjYzMTIuMTIzIiBuZXh0dmVyc2lvbj0iIiBsYW5nPSJlbiIgYnJhbmQ9IkdHTFMiIGNsaWVudD0iIiBpbnN0YWxsYWdlPSIxIiBpbnN0YWxsZGF0ZXRpbWU9IjE3Mzg5NDU5ODUiIG9vYmVfaW5zdGFsbF90aW1lPSIxMzM4MzQxODQ0NDQzNjAwMDAiPjxldmVudCBldmVudHR5cGU9IjMxIiBldmVudHJlc3VsdD0iMSIgZXJyb3Jjb2RlPSIwIiBleHRyYWNvZGUxPSIyMTc5ODYyIiBzeXN0ZW1fdXB0aW1lX3RpY2tzPSI0OTc4NjE3MTcwIi8-PC9hcHA-PC9yZXF1ZXN0Pg1⤵
- Unexpected DNS network traffic destination
- System Location Discovery: System Language Discovery
- System Network Configuration Discovery: Internet Connection Discovery
PID:3908
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
557KB
MD5b037ca44fd19b8eedb6d5b9de3e48469
SHA11f328389c62cf673b3de97e1869c139d2543494e
SHA25611e88b2ca921e5c88f64567f11bd83cbc396c10365d40972f3359fcc7965d197
SHA512fa89ab3347fd57486cf3064ad164574f70e2c2b77c382785479bfd5ab50caa0881de3c2763a0932feac2faaf09479ef699a04ba202866dc7e92640246ba9598b
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Filesize
50KB
MD5e107c88a6fc54cc3ceb4d85768374074
SHA1a8d89ae75880f4fca7d7167fae23ac0d95e3d5f6
SHA2568f821f0c818f8d817b82f76c25f90fde9fb73ff1ae99c3df3eaf2b955653c9c8
SHA512b39e07b0c614a0fa88afb1f3b0d9bb9ba9c932e2b30899002008220ccf1acb0f018d5414aee64d92222c2c39f3ffe2c0ad2d9962d23aaa4bf5750c12c7f3e6fe
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Filesize
14KB
MD52a0506c7902018d7374b0ec4090c53c0
SHA126c6094af2043e1e8460023ac6b778ba84463f30
SHA256cad1e2eef6e20e88699fac5ef31d495890df118e58c86fc442ea6337aac7a75a
SHA5124a9856512e7866b8623565886e5f3aebf15c824cb127e24be9afa2a5501a83fa95d209875a8777566bcac9973b38881e18caf6ad160c8d01366a508cafc2164b
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Filesize
14KB
MD5610eb8cecd447fcf97c242720d32b6bd
SHA14b094388e0e5135e29c49ce42ff2aa099b7f2d43
SHA256107d8d9d6c94d2a86ac5af4b4cec43d959c2e44d445017fea59e2e0a5efafdc7
SHA512cf15f49ef3ae578a5f725e24bdde86c33bbc4fd30a6eb885729fd3d9b151a4b13822fa8c35d3e0345ec43d567a246111764812596fd0ecc36582b8ee2a76c331
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Filesize
695KB
MD5195ffb7167db3219b217c4fd439eedd6
SHA11e76e6099570ede620b76ed47cf8d03a936d49f8
SHA256e1e27af7b07eeedf5ce71a9255f0422816a6fc5849a483c6714e1b472044fa9d
SHA51256eb7f070929b239642dab729537dde2c2287bdb852ad9e80b5358c74b14bc2b2dded910d0e3b6304ea27eb587e5f19db0a92e1cbae6a70fb20b4ef05057e4ac
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Filesize
619KB
MD591f5d6abf1fc57cb3e6222f10c51bff1
SHA1fd1183ba06cf793f12de674d8aa31bd8bfbe1172
SHA256c48c486f8655d33b4b0d7fc169adf5cbc964c723161953ef5877e99e45833840
SHA5124538dc6b1c0c21f09fcce5a496538c25cbbc88bd5bb484806fa9426753691df7d798882085be0bdf4ee542da793c04a0d45675265a6ced2f4ea61b691909597a
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Filesize
6.6MB
MD510d99a6d714e98f1e7989dda7052b837
SHA1b2293ba8e3bb04b266c9d9cf50075d9c883067c0
SHA256b70b77c0c0ff6d0ee35c06e4ea0166f1e5b0ca87c99d328ee4fd61544cf739fe
SHA512bfe0866eac5f983163d3aa329a33856ad390c5a4c1533687e3e4f7bf9267e1a9e1af1e18caeca7c831e7e266a1c561262e15094ad82ddd78afe8c1a9e5e2fe40
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Filesize
133KB
MD5a0bd0d1a66e7c7f1d97aedecdafb933f
SHA1dd109ac34beb8289030e4ec0a026297b793f64a3
SHA25679d7e45f8631e8d2541d01bfb5a49a3a090be72b3d465389a2d684680fee2e36
SHA5122a50ae5c7234a44b29f82ebc2e3cfed37bf69294eb00b2dc8905c61259975b2f3a059c67aeab862f002752454d195f7191d9b82b056f6ef22d6e1b0bb3673d50
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Filesize
5.2MB
MD5aead90ab96e2853f59be27c4ec1e4853
SHA143cdedde26488d3209e17efff9a51e1f944eb35f
SHA25646cfbe804b29c500ebc0b39372e64c4c8b4f7a8e9b220b5f26a9adf42fcb2aed
SHA512f5044f2ee63906287460b9adabfcf3c93c60b51c86549e33474c4d7f81c4f86cd03cd611df94de31804c53006977874b8deb67c4bf9ea1c2b70c459b3a44b38d
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Filesize
2KB
MD5d85ba6ff808d9e5444a4b369f5bc2730
SHA131aa9d96590fff6981b315e0b391b575e4c0804a
SHA25684739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f
SHA5128c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249
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Filesize
944B
MD559d97011e091004eaffb9816aa0b9abd
SHA11602a56b01dd4b7c577ca27d3117e4bcc1aa657b
SHA25618f381e0db020a763b8c515c346ef58679ab9c403267eacfef5359e272f7e71d
SHA512d9ca49c1a17580981e2c1a50d73c0eecaa7a62f8514741512172e395af2a3d80aeb0f71c58bc7f52c18246d57ba67af09b6bff4776877d6cc6f0245c30e092d6
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Filesize
2.9MB
MD5e398a0557b44366c849b85fbe26a63e1
SHA1d20b6b46fc572a435e4e5eb7f5dbd3e601725bac
SHA25663466a7b4c4ca557cbb2e8b57c125db52fffb234fdbfa38f31eb61b040411e7d
SHA512a4c0a608ea1f4a33bd39a5536dc4b2105598e3fa4a9ff9033b2279f885a7251684761e1f4ac7b1ba5226de2b0ca777fdc971f0a7f22e65f66f0a3b9c601291d1
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82