Analysis
- max time kernel
123s - max time network
153s - platform
windows10-2004_x64 - resource
win10v2004-20220812-en - resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system - submitted
24/09/2022, 15:01
Static task
static1
Behavioral task
behavioral1
Sample
54b3ae8eec0c73f0ac6993f761a8b099.exe
Resource
win7-20220812-en
10 signatures
150 seconds
Behavioral task
behavioral2
Sample
54b3ae8eec0c73f0ac6993f761a8b099.exe
Resource
win10v2004-20220812-en
14 signatures
150 seconds
General
- Target 54b3ae8eec0c73f0ac6993f761a8b099.exe
- Size 4.0MB
- Sample220924-sdwa2abeb5
- SHA256 22a2d7af185892d400b7b98c62dedaf8ff9bfdf65fcc7c6c20d4ca102452db6d
- MD5 54b3ae8eec0c73f0ac6993f761a8b099
- SHA1 a8ec0c7bcc845ee8bf9a017830d3d611d0e3287a
- SHA512 909fd7d72e6d6aa18fef8b7dcf301716baa6f7fbef75646162d1994ab61c089eeb889412cb3d4b74fce3ad75235911570e18c94b4be65990017214388777890b
- SSDEEP 49152:i6Mfs/3KxuSrb/TWvO90d7HjmAFd4A64nsfJkclgXKRQHfD/az1YLm0lhoM9iTdT:b3D68zlhZwTR0A
- MD5 SHA1 SHA512 SSDEEP
Score
10/10
Malware Config
Signatures
- DcRat
DarkCrystal(DC) is a new .NET RAT active since June 2019 capable of loading additional plugins.
- Process spawned unexpected child process 27 IoCs
This typically indicates the parent process was compromised via an exploit or macro.
description pid pid_target Process procid_target Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 2824 4424 schtasks.exe 65 Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 3796 4424 schtasks.exe 65 Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 3352 4424 schtasks.exe 65 Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 1672 4424 schtasks.exe 65 Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 3888 4424 schtasks.exe 65 Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 320 4424 schtasks.exe 65 Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 2008 4424 schtasks.exe 65 Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 2324 4424 schtasks.exe 65 Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 4940 4424 schtasks.exe 65 Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 4800 4424 schtasks.exe 65 Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 3960 4424 schtasks.exe 65 Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 4024 4424 schtasks.exe 65 Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 2636 4424 schtasks.exe 65 Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 4236 4424 schtasks.exe 65 Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 2296 4424 schtasks.exe 65 Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 4316 4424 schtasks.exe 65 Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 3636 4424 schtasks.exe 65 Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 520 4424 schtasks.exe 65 Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 4680 4424 schtasks.exe 65 Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 3472 4424 schtasks.exe 65 Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 4132 4424 schtasks.exe 65 Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 4644 4424 schtasks.exe 65 Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 2736 4424 schtasks.exe 65 Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 4492 4424 schtasks.exe 65 Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 4332 4424 schtasks.exe 65 Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 4496 4424 schtasks.exe 65 Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 2292 4424 schtasks.exe 65 -
resource yara_rule behavioral2/files/0x0009000000022dee-133.dat dcrat behavioral2/files/0x0009000000022dee-134.dat dcrat behavioral2/memory/1448-135-0x00000000007C0000-0x0000000000898000-memory.dmp dcrat behavioral2/files/0x0009000000022df7-142.dat dcrat behavioral2/files/0x0009000000022df7-143.dat dcrat - Executes dropped EXE 2 IoCs
pid Process 1448 go-memexec-3878489337.exe 1912 Registry.exe - Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation go-memexec-3878489337.exe - Drops file in Program Files directory 7 IoCs
description ioc Process File created C:\Program Files\ModifiableWindowsApps\54b3ae8eec0c73f0ac6993f761a8b099.exe go-memexec-3878489337.exe File created C:\Program Files (x86)\WindowsPowerShell\54b3ae8eec0c73f0ac6993f761a8b099.exe go-memexec-3878489337.exe File created C:\Program Files (x86)\WindowsPowerShell\bd1ef337a56b55 go-memexec-3878489337.exe File created C:\Program Files\Windows NT\TableTextService\go-memexec-3878489337.exe go-memexec-3878489337.exe File created C:\Program Files\Windows NT\TableTextService\7761cccda1e0ac go-memexec-3878489337.exe File created C:\Program Files\Microsoft Office\PackageManifests\services.exe go-memexec-3878489337.exe File created C:\Program Files\Microsoft Office\PackageManifests\c5b4cb5e9653cc go-memexec-3878489337.exe - Drops file in Windows directory 4 IoCs
description ioc Process File created C:\Windows\Registration\lsass.exe go-memexec-3878489337.exe File created C:\Windows\Registration\6203df4a6bafc7 go-memexec-3878489337.exe File created C:\Windows\IdentityCRL\INT\lsass.exe go-memexec-3878489337.exe File created C:\Windows\IdentityCRL\INT\6203df4a6bafc7 go-memexec-3878489337.exe - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Creates scheduled task(s) 1 TTPs 27 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
pid Process 3888 schtasks.exe 320 schtasks.exe 4236 schtasks.exe 2736 schtasks.exe 2824 schtasks.exe 1672 schtasks.exe 4940 schtasks.exe 4492 schtasks.exe 4132 schtasks.exe 2296 schtasks.exe 3636 schtasks.exe 4024 schtasks.exe 2636 schtasks.exe 3796 schtasks.exe 4800 schtasks.exe 4680 schtasks.exe 4644 schtasks.exe 4496 schtasks.exe 4316 schtasks.exe 3472 schtasks.exe 2008 schtasks.exe 2324 schtasks.exe 3960 schtasks.exe 520 schtasks.exe 4332 schtasks.exe 3352 schtasks.exe 2292 schtasks.exe - Modifies registry class 1 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000_Classes\Local Settings go-memexec-3878489337.exe - Suspicious behavior: EnumeratesProcesses 14 IoCs
pid Process 1448 go-memexec-3878489337.exe 1448 go-memexec-3878489337.exe 1448 go-memexec-3878489337.exe 1448 go-memexec-3878489337.exe 1448 go-memexec-3878489337.exe 1912 Registry.exe 1912 Registry.exe 1912 Registry.exe 1912 Registry.exe 1912 Registry.exe 1912 Registry.exe 1912 Registry.exe 1912 Registry.exe 1912 Registry.exe - Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 1912 Registry.exe - Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 1448 go-memexec-3878489337.exe Token: SeDebugPrivilege 1912 Registry.exe - Suspicious use of WriteProcessMemory 8 IoCs
description pid Process procid_target PID 1800 wrote to memory of 1448 1800 54b3ae8eec0c73f0ac6993f761a8b099.exe 80 PID 1800 wrote to memory of 1448 1800 54b3ae8eec0c73f0ac6993f761a8b099.exe 80 PID 1448 wrote to memory of 3984 1448 go-memexec-3878489337.exe 108 PID 1448 wrote to memory of 3984 1448 go-memexec-3878489337.exe 108 PID 3984 wrote to memory of 2388 3984 cmd.exe 110 PID 3984 wrote to memory of 2388 3984 cmd.exe 110 PID 3984 wrote to memory of 1912 3984 cmd.exe 111 PID 3984 wrote to memory of 1912 3984 cmd.exe 111
Processes
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C:\Users\Admin\AppData\Local\Temp\54b3ae8eec0c73f0ac6993f761a8b099.exe"C:\Users\Admin\AppData\Local\Temp\54b3ae8eec0c73f0ac6993f761a8b099.exe"1⤵
- Suspicious use of WriteProcessMemory
PID:1800 -
C:\Users\Admin\AppData\Local\Temp\go-memexec-3878489337.exeC:\Users\Admin\AppData\Local\Temp\go-memexec-3878489337.exe2⤵
- Executes dropped EXE
- Checks computer location settings
- Drops file in Program Files directory
- Drops file in Windows directory
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1448 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\iZC2HVp7ET.bat"3⤵
- Suspicious use of WriteProcessMemory
PID:3984 -
C:\Windows\system32\w32tm.exew32tm /stripchart /computer:localhost /period:5 /dataonly /samples:24⤵PID:2388
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C:\Users\Default User\Registry.exe"C:\Users\Default User\Registry.exe"4⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
PID:1912
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "smsss" /sc MINUTE /mo 13 /tr "'C:\odt\smss.exe'" /f1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:2824
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "smss" /sc ONLOGON /tr "'C:\odt\smss.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:3796
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "smsss" /sc MINUTE /mo 7 /tr "'C:\odt\smss.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:3352
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "taskhostwt" /sc MINUTE /mo 13 /tr "'C:\Recovery\WindowsRE\taskhostw.exe'" /f1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:1672
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "taskhostw" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\taskhostw.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:3888
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "taskhostwt" /sc MINUTE /mo 6 /tr "'C:\Recovery\WindowsRE\taskhostw.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:320
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "lsassl" /sc MINUTE /mo 8 /tr "'C:\Windows\IdentityCRL\INT\lsass.exe'" /f1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:2008
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "lsass" /sc ONLOGON /tr "'C:\Windows\IdentityCRL\INT\lsass.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:2324
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "lsassl" /sc MINUTE /mo 8 /tr "'C:\Windows\IdentityCRL\INT\lsass.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:4940
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "RegistryR" /sc MINUTE /mo 13 /tr "'C:\Users\Default User\Registry.exe'" /f1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:4800
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "Registry" /sc ONLOGON /tr "'C:\Users\Default User\Registry.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:3960
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "RegistryR" /sc MINUTE /mo 7 /tr "'C:\Users\Default User\Registry.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:4024
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "lsassl" /sc MINUTE /mo 11 /tr "'C:\Windows\Registration\lsass.exe'" /f1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:2636
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "lsass" /sc ONLOGON /tr "'C:\Windows\Registration\lsass.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:4236
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "lsassl" /sc MINUTE /mo 14 /tr "'C:\Windows\Registration\lsass.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:2296
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "54b3ae8eec0c73f0ac6993f761a8b0995" /sc MINUTE /mo 5 /tr "'C:\Program Files (x86)\WindowsPowerShell\54b3ae8eec0c73f0ac6993f761a8b099.exe'" /f1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:4316
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "54b3ae8eec0c73f0ac6993f761a8b099" /sc ONLOGON /tr "'C:\Program Files (x86)\WindowsPowerShell\54b3ae8eec0c73f0ac6993f761a8b099.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:3636
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "54b3ae8eec0c73f0ac6993f761a8b0995" /sc MINUTE /mo 12 /tr "'C:\Program Files (x86)\WindowsPowerShell\54b3ae8eec0c73f0ac6993f761a8b099.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:520
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "SppExtComObjS" /sc MINUTE /mo 13 /tr "'C:\Users\All Users\Mozilla\SppExtComObj.exe'" /f1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:4680
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "SppExtComObj" /sc ONLOGON /tr "'C:\Users\All Users\Mozilla\SppExtComObj.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:3472
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "SppExtComObjS" /sc MINUTE /mo 7 /tr "'C:\Users\All Users\Mozilla\SppExtComObj.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:4132
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "go-memexec-3878489337g" /sc MINUTE /mo 5 /tr "'C:\Program Files\Windows NT\TableTextService\go-memexec-3878489337.exe'" /f1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:4644
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "go-memexec-3878489337" /sc ONLOGON /tr "'C:\Program Files\Windows NT\TableTextService\go-memexec-3878489337.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:2736
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "go-memexec-3878489337g" /sc MINUTE /mo 5 /tr "'C:\Program Files\Windows NT\TableTextService\go-memexec-3878489337.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:4492
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "servicess" /sc MINUTE /mo 5 /tr "'C:\Program Files\Microsoft Office\PackageManifests\services.exe'" /f1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:4332
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "services" /sc ONLOGON /tr "'C:\Program Files\Microsoft Office\PackageManifests\services.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:4496
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "servicess" /sc MINUTE /mo 12 /tr "'C:\Program Files\Microsoft Office\PackageManifests\services.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:2292
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\go-memexec-3878489337.exe
- Size 831KB
- SHA256 1ca82d84d20a71004931e1abc59949b379b1fcd35037df5fdcb80148721fe8e8
- MD5 b7e6718159acb8b5491bcc82a752c59a
- SHA1 6bdb48af64d90b7b471f367876a5aff3e121f466
- SHA512 13c53a36b8d269d32e3f8091079be07337bdad485084e688362eebe69c29a3966f0137d89f5c1f5f275ac0a8c9eca3f426a3c64001b8fd14aa0826071dd59323
- SSDEEP 12288:bf0cZpEXSFE38iRVF1jv3vkYOejEnS+Jhlb1sI:Ic8XSFE3FRVF1jv38IESglb3
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\Temp\go-memexec-3878489337.exe
- Size 831KB
- SHA256 1ca82d84d20a71004931e1abc59949b379b1fcd35037df5fdcb80148721fe8e8
- MD5 b7e6718159acb8b5491bcc82a752c59a
- SHA1 6bdb48af64d90b7b471f367876a5aff3e121f466
- SHA512 13c53a36b8d269d32e3f8091079be07337bdad485084e688362eebe69c29a3966f0137d89f5c1f5f275ac0a8c9eca3f426a3c64001b8fd14aa0826071dd59323
- SSDEEP 12288:bf0cZpEXSFE38iRVF1jv3vkYOejEnS+Jhlb1sI:Ic8XSFE3FRVF1jv38IESglb3
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\Temp\iZC2HVp7ET.bat
- Size 199B
- SHA256 ceef9b0391df3ceefa68d5c6dfdd4a6d28ed902c399aaffc290e365e2609774f
- MD5 6608ae380fc84612b2b3489c08fec85e
- SHA1 df098a9cbc678a23ef8c98e0e3dc29321939187a
- SHA512 c89320a55bafc449e7a93a3b690a92dae21bdaa5d299fe6eac932f6f57b9579c01df8d6f6b46dba0a455493042bac684a51f813ebfd2cadf7db987591924411f
- MD5 SHA1 SHA512
- Path C:\Users\Default User\Registry.exe
- Size 831KB
- SHA256 1ca82d84d20a71004931e1abc59949b379b1fcd35037df5fdcb80148721fe8e8
- MD5 b7e6718159acb8b5491bcc82a752c59a
- SHA1 6bdb48af64d90b7b471f367876a5aff3e121f466
- SHA512 13c53a36b8d269d32e3f8091079be07337bdad485084e688362eebe69c29a3966f0137d89f5c1f5f275ac0a8c9eca3f426a3c64001b8fd14aa0826071dd59323
- SSDEEP 12288:bf0cZpEXSFE38iRVF1jv3vkYOejEnS+Jhlb1sI:Ic8XSFE3FRVF1jv38IESglb3
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Default\Registry.exe
- Size 831KB
- SHA256 1ca82d84d20a71004931e1abc59949b379b1fcd35037df5fdcb80148721fe8e8
- MD5 b7e6718159acb8b5491bcc82a752c59a
- SHA1 6bdb48af64d90b7b471f367876a5aff3e121f466
- SHA512 13c53a36b8d269d32e3f8091079be07337bdad485084e688362eebe69c29a3966f0137d89f5c1f5f275ac0a8c9eca3f426a3c64001b8fd14aa0826071dd59323
- SSDEEP 12288:bf0cZpEXSFE38iRVF1jv3vkYOejEnS+Jhlb1sI:Ic8XSFE3FRVF1jv38IESglb3
- MD5 SHA1 SHA512 SSDEEP