Analysis
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max time kernel
150s -
max time network
149s -
platform
windows7_x64 -
resource
win7-20230220-en -
resource tags
arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system -
submitted
30-05-2023 06:16
Behavioral task
behavioral1
Sample
AA_v3.exe
Resource
win7-20230220-en
Behavioral task
behavioral2
Sample
AA_v3.exe
Resource
win10v2004-20230220-en
General
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Target
AA_v3.exe
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Size
798KB
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MD5
90aadf2247149996ae443e2c82af3730
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SHA1
050b7eba825412b24e3f02d76d7da5ae97e10502
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SHA256
ee573647477339784dcef81024de1be1762833a20e5cc2b89a93e47d05b86b6a
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SHA512
eec32bb82b230dd309c29712e72d4469250e651449e127479d178eddbafd5a46ec8048a753bc2c1a0fdf1dc3ed72a9453ca66fb49cbf0f95a12704e5427182be
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SSDEEP
24576:Uj0JJ4p/A4npt3XojeQG5EtzRtO7GvmDguXd:UjoJ4u4zojegylDN
Malware Config
Signatures
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FlawedAmmyy RAT
Remote-access trojan based on leaked code for the Ammyy remote admin software.
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Blocklisted process makes network request 1 IoCs
Processes:
rundll32.exeflow pid process 20 1600 rundll32.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
AA_v3.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-2647223082-2067913677-935928954-1000\Control Panel\International\Geo\Nation AA_v3.exe -
Loads dropped DLL 4 IoCs
Processes:
rundll32.exepid process 1600 rundll32.exe 1600 rundll32.exe 1600 rundll32.exe 1600 rundll32.exe -
Writes to the Master Boot Record (MBR) 1 TTPs 2 IoCs
Bootkits write to the MBR to gain persistence at a level below the operating system.
Processes:
AA_v3.exeAA_v3.exedescription ioc process File opened for modification \??\PhysicalDrive0 AA_v3.exe File opened for modification \??\PhysicalDrive0 AA_v3.exe -
Drops file in System32 directory 11 IoCs
Processes:
AA_v3.exedescription ioc process File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\Temporary Internet Files\counters.dat AA_v3.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\E0F5C59F9FA661F6F4C50B87FEF3A15A AA_v3.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015 AA_v3.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\F0ACCF77CDCBFF39F6191887F6D2D357 AA_v3.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\F0ACCF77CDCBFF39F6191887F6D2D357 AA_v3.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\3805946C7C58953EFFCBA8631AC290B5 AA_v3.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\E0F5C59F9FA661F6F4C50B87FEF3A15A AA_v3.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015 AA_v3.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\103621DE9CD5414CC2538780B4B75751 AA_v3.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\103621DE9CD5414CC2538780B4B75751 AA_v3.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\3805946C7C58953EFFCBA8631AC290B5 AA_v3.exe -
Modifies data under HKEY_USERS 64 IoCs
Processes:
AA_v3.exedescription ioc process Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy\Admin\hr3 = 076da7c30860e6712351359ac459d85c64d6144067b1227be4f463a5ffc627268ba12ca58b36375e090cef84b8760748bd685f3cb23665059660b370ffba179b536e37cd AA_v3.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0" AA_v3.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{7EEF5FEB-0C48-4CAB-BD6E-53B540014212} AA_v3.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0" AA_v3.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Policies\Microsoft\SystemCertificates\CA\CRLs AA_v3.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Policies\Microsoft\SystemCertificates\CA\CTLs AA_v3.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Policies\Microsoft\SystemCertificates\Disallowed\Certificates AA_v3.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\TrustedPeople\CTLs AA_v3.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust AA_v3.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings AA_v3.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Policies\Microsoft\SystemCertificates\CA\Certificates AA_v3.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Policies\Microsoft\SystemCertificates\Disallowed\CTLs AA_v3.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Policies\Microsoft\SystemCertificates\TrustedPeople\CTLs AA_v3.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust AA_v3.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA AA_v3.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed AA_v3.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\Root\Certificates AA_v3.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\2a-29-57-6a-d0-b3\WpadDecisionTime = 60d06c20cf92d901 AA_v3.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\2a-29-57-6a-d0-b3\WpadDecision = "0" AA_v3.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings AA_v3.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Policies\Microsoft\SystemCertificates\trust\Certificates AA_v3.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Policies\Microsoft\SystemCertificates\trust\CRLs AA_v3.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{7EEF5FEB-0C48-4CAB-BD6E-53B540014212}\WpadDecisionReason = "1" AA_v3.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\Root\CRLs AA_v3.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\SmartCardRoot\Certificates AA_v3.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{7EEF5FEB-0C48-4CAB-BD6E-53B540014212}\WpadDecisionTime = 60d06c20cf92d901 AA_v3.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\2a-29-57-6a-d0-b3\WpadDecisionReason = "1" AA_v3.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE AA_v3.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\SmartCardRoot\CTLs AA_v3.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Policies\Microsoft\SystemCertificates\TrustedPeople\Certificates AA_v3.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\trust\CTLs AA_v3.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Classes\Local Settings\MuiCache\2D\52C64B7E\LanguageList = 65006e002d0055005300000065006e0000000000 AA_v3.exe Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{7EEF5FEB-0C48-4CAB-BD6E-53B540014212}\WpadNetworkName = "Network 3" AA_v3.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\Root\CTLs AA_v3.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\2a-29-57-6a-d0-b3 AA_v3.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections AA_v3.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\TrustedPeople\CRLs AA_v3.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA AA_v3.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\Disallowed\CRLs AA_v3.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Policies\Microsoft\SystemCertificates\trust\CTLs AA_v3.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy AA_v3.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad AA_v3.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing AA_v3.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\CA\CRLs AA_v3.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\Disallowed\CTLs AA_v3.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{7EEF5FEB-0C48-4CAB-BD6E-53B540014212}\2a-29-57-6a-d0-b3 AA_v3.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 AA_v3.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ AA_v3.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Policies\Microsoft\SystemCertificates\Disallowed\CRLs AA_v3.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\trust\CRLs AA_v3.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f0070000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 AA_v3.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{7EEF5FEB-0C48-4CAB-BD6E-53B540014212}\WpadDecision = "0" AA_v3.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\CA\Certificates AA_v3.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople AA_v3.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\trust\Certificates AA_v3.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1" AA_v3.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\Disallowed\Certificates AA_v3.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\TrustedPeople\Certificates AA_v3.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople AA_v3.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 AA_v3.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\My AA_v3.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\SmartCardRoot\CRLs AA_v3.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Policies\Microsoft\SystemCertificates\TrustedPeople\CRLs AA_v3.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy\Admin AA_v3.exe -
Processes:
AA_v3.exedescription ioc process Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\ROOT\Certificates\CABD2A79A1076A31F21D253635CB039D4329A5E8 AA_v3.exe Set value (data) \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\ROOT\Certificates\CABD2A79A1076A31F21D253635CB039D4329A5E8\Blob = 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 AA_v3.exe Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\DAC9024F54D8F6DF94935FB1732638CA6AD77C13 AA_v3.exe Set value (data) \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\DAC9024F54D8F6DF94935FB1732638CA6AD77C13\Blob = 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 AA_v3.exe Set value (data) \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\DAC9024F54D8F6DF94935FB1732638CA6AD77C13\Blob = 1900000001000000100000006cf252fec3e8f20996de5d4dd9aef424030000000100000014000000dac9024f54d8f6df94935fb1732638ca6ad77c131d00000001000000100000004558d512eecb27464920897de7b66053140000000100000014000000c4a7b1a47b2c71fadbe14b9075ffc41560858910090000000100000016000000301406082b0601050507030406082b060105050703010b000000010000001e000000440053005400200052006f006f00740020004300410020005800330000000f00000001000000140000005bcaa1c2780f0bcb5a90770451d96f38963f012d20000000010000004e0300003082034a30820232a003020102021044afb080d6a327ba893039862ef8406b300d06092a864886f70d0101050500303f31243022060355040a131b4469676974616c205369676e617475726520547275737420436f2e311730150603550403130e44535420526f6f74204341205833301e170d3030303933303231313231395a170d3231303933303134303131355a303f31243022060355040a131b4469676974616c205369676e617475726520547275737420436f2e311730150603550403130e44535420526f6f7420434120583330820122300d06092a864886f70d01010105000382010f003082010a0282010100dfafe99750088357b4cc6265f69082ecc7d32c6b30ca5becd9c37dc740c118148be0e83376492ae33f214993ac4e0eaf3e48cb65eefcd3210f65d22ad9328f8ce5f777b0127bb595c089a3a9baed732e7a0c063283a27e8a1430cd11a0e12a38b9790a31fd50bd8065dfb7516383c8e28861ea4b6181ec526bb9a2e24b1a289f48a39e0cda098e3e172e1edd20df5bc62a8aab2ebd70adc50b1a25907472c57b6aab34d63089ffe568137b540bc8d6aeec5a9c921e3d64b38cc6dfbfc94170ec1672d526ec38553943d0fcfd185c40f197ebd59a9b8d1dbada25b9c6d8dfc115023aabda6ef13e2ef55c089c3cd68369e4109b192ab62957e3e53d9b9ff0025d0203010001a3423040300f0603551d130101ff040530030101ff300e0603551d0f0101ff040403020106301d0603551d0e04160414c4a7b1a47b2c71fadbe14b9075ffc41560858910300d06092a864886f70d01010505000382010100a31a2c9b17005ca91eee2866373abf83c73f4bc309a095205de3d95944d23e0d3ebd8a4ba0741fce10829c741a1d7e981addcb134bb32044e491e9ccfc7da5db6ae5fee6fde04eddb7003ab57049aff2e5eb02f1d1028b19cb943a5e48c4181e58195f1e025af00cf1b1ada9dc59868b6ee991f586cafab96633aa595bcee2a7167347cb2bcc99b03748cfe3564bf5cf0f0c723287c6f044bb53726d43f526489a5267b758abfe67767178db0da256141339243185a2a8025a3047e1dd5007bc02099000eb6463609b16bc88c912e6d27d918bf93d328d65b4e97cb15776eac5b62839bf15651cc8f677966a0a8d770bd8910b048e07db29b60aee9d82353510 AA_v3.exe Set value (data) \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\DAC9024F54D8F6DF94935FB1732638CA6AD77C13\Blob = 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 AA_v3.exe -
Suspicious behavior: EnumeratesProcesses 14 IoCs
Processes:
rundll32.exepid process 1600 rundll32.exe 1600 rundll32.exe 1600 rundll32.exe 1600 rundll32.exe 1600 rundll32.exe 1600 rundll32.exe 1600 rundll32.exe 1600 rundll32.exe 1600 rundll32.exe 1600 rundll32.exe 1600 rundll32.exe 1600 rundll32.exe 1600 rundll32.exe 1600 rundll32.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
rundll32.exedescription pid process Token: SeLockMemoryPrivilege 1600 rundll32.exe -
Suspicious use of FindShellTrayWindow 1 IoCs
Processes:
AA_v3.exepid process 1076 AA_v3.exe -
Suspicious use of SendNotifyMessage 1 IoCs
Processes:
AA_v3.exepid process 1076 AA_v3.exe -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
AA_v3.exeAA_v3.exedescription pid process target process PID 1256 wrote to memory of 1076 1256 AA_v3.exe AA_v3.exe PID 1256 wrote to memory of 1076 1256 AA_v3.exe AA_v3.exe PID 1256 wrote to memory of 1076 1256 AA_v3.exe AA_v3.exe PID 1256 wrote to memory of 1076 1256 AA_v3.exe AA_v3.exe PID 1076 wrote to memory of 1600 1076 AA_v3.exe rundll32.exe PID 1076 wrote to memory of 1600 1076 AA_v3.exe rundll32.exe PID 1076 wrote to memory of 1600 1076 AA_v3.exe rundll32.exe PID 1076 wrote to memory of 1600 1076 AA_v3.exe rundll32.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\AA_v3.exe"C:\Users\Admin\AppData\Local\Temp\AA_v3.exe"1⤵
- Writes to the Master Boot Record (MBR)
PID:1300
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C:\Users\Admin\AppData\Local\Temp\AA_v3.exe"C:\Users\Admin\AppData\Local\Temp\AA_v3.exe" -service -lunch1⤵
- Suspicious use of WriteProcessMemory
PID:1256 -
C:\Users\Admin\AppData\Local\Temp\AA_v3.exe"C:\Users\Admin\AppData\Local\Temp\AA_v3.exe"2⤵
- Checks computer location settings
- Writes to the Master Boot Record (MBR)
- Drops file in System32 directory
- Modifies data under HKEY_USERS
- Modifies system certificate store
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1076 -
C:\Windows\system32\rundll32.exerundll32.exe "C:\ProgramData\AMMYY\aa_nts.dll",run3⤵
- Blocklisted process makes network request
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1600
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
-
Filesize
902KB
MD5480a66902e6e7cdafaa6711e8697ff8c
SHA16ac730962e7c1dba9e2ecc5733a506544f3c8d11
SHA2567eaaaa6010bbcd6bb8c9ad08d4b0966c7aedc9b2ac24758f170012ac36e508b5
SHA5127d010cd47b7d1adf66f9c97afc6c3805997aa5c7cc6ff13eddee81f24cf2b95a3fe375ec5b3d6185c0bc8840b4ad91ae143c73a39af26391cc182ab6a1793ba5
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Filesize
4KB
MD557b9cfa818d691abe6bde182563eb278
SHA1338989fd25f55b9e7594aff8567210fcf44e97f7
SHA2567dde12c84e6f60afaeaca595238094cf0e94525644f2c6ad92986fcc36693ba0
SHA51209f1bf517bfe923f20614668037fff8c655878b240dcdff5a0d653410240a59d0c943fa3078e28e70a0217ef1096841cdc021f3c3467fbd7cfbff5828831a85b
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Filesize
46B
MD53f05819f995b4dafa1b5d55ce8d1f411
SHA1404449b79a16bfc4f64f2fd55cd73d5d27a85d71
SHA2567e0bf0cbd06a087500a9c3b50254df3a8a2c2980921ab6a62ab1121941c80fc0
SHA51234abb7df8b3a68e1649ff0d2762576a4d4e65da548e74b1aa65c2b82c1b89f90d053ecddac67c614ca6084dc5b2cb552949250fb70f49b536f1bcb0057717026
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Filesize
327B
MD5c88c1e9e9da3b6742360877a1d0128ba
SHA1dbf0b02cad1bacde5d0ccdcb5328e436f41e5c73
SHA25603558beaca6ee18dbb7b91c7640e9160df06b54264063ee0d25f1cd31197a292
SHA51260644dd5a75a4da37a4ba453d20d5d6fc80c20f442612cb6c1213aeeb9b6c3d0d0a40376b7a339eb79262bde43437c5b41107874f2f54ada0a56b1b8ae959bb8
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C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015
Filesize62KB
MD53ac860860707baaf32469fa7cc7c0192
SHA1c33c2acdaba0e6fa41fd2f00f186804722477639
SHA256d015145d551ecd14916270efad773bbc9fd57fad2228d2c24559f696c961d904
SHA512d62ad2408c969a95550fb87efda50f988770ba5e39972041bf85924275baf156b8bec309ecc6409e5acdd37ec175dea40eff921ab58933b5b5b5d35a6147567c
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C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\F0ACCF77CDCBFF39F6191887F6D2D357
Filesize1KB
MD5a266bb7dcc38a562631361bbf61dd11b
SHA13b1efd3a66ea28b16697394703a72ca340a05bd5
SHA256df545bf919a2439c36983b54cdfc903dfa4f37d3996d8d84b4c31eec6f3c163e
SHA5120da8ef4f8f6ed3d16d2bc8eb816b9e6e1345dfe2d91160196c47e6149a1d6aedaafadcefd66acdea7f72dcf0832770192ceac15b0c559c4ccc2c0e5581d5aefc
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C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
Filesize344B
MD59d21b1b48b42f66fcd3e5a3510a093a0
SHA11149f535a80b8c588a7b7a9f08748f28a8647f12
SHA25627fb524d48430a942bdaf8dd7b2defb0d2cc91fe7cc20cf9da670b76bce1c2e2
SHA512913eb23ab68857eb21f7478f7c277f4eed57c08016097de7e24900cc07f6d188d0f5ac08b3e84965ac70cb83dafc7a4793cd4fbfb3bf75de32473b1a1858be95
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C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\F0ACCF77CDCBFF39F6191887F6D2D357
Filesize242B
MD5862417237c28719e3016ce206c62dc34
SHA1cdaea1559a043709671395b59f2ed9b80d1fdce8
SHA256b8c815e5b8ecdf809b9247eb339c56daca843f8c4fa13bc99339afd247f7c889
SHA512b2706632eeb5878cd9b6d0b134ade0acc838e787a9911cdc9fb721a298ff9cb83f6ebe52455b2dae765e2ed8073c98cd81bfd7ec78dbd6257c6364707f970da6
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Filesize
164KB
MD54ff65ad929cd9a367680e0e5b1c08166
SHA1c0af0d4396bd1f15c45f39d3b849ba444233b3a2
SHA256c8733c93cc5aaf5ca206d06af22ee8dbdec764fb5085019a6a9181feb9dfdee6
SHA512f530dc0d024a5a3b8903ffaaa41b608a5ccdd6da4ba1949f2c2e55a9fca475fec5c8d2119b5763cabe7ef1c3788fb9dcac621869db51d65b1d83cfe404fb4c27
-
Filesize
902KB
MD5480a66902e6e7cdafaa6711e8697ff8c
SHA16ac730962e7c1dba9e2ecc5733a506544f3c8d11
SHA2567eaaaa6010bbcd6bb8c9ad08d4b0966c7aedc9b2ac24758f170012ac36e508b5
SHA5127d010cd47b7d1adf66f9c97afc6c3805997aa5c7cc6ff13eddee81f24cf2b95a3fe375ec5b3d6185c0bc8840b4ad91ae143c73a39af26391cc182ab6a1793ba5
-
Filesize
902KB
MD5480a66902e6e7cdafaa6711e8697ff8c
SHA16ac730962e7c1dba9e2ecc5733a506544f3c8d11
SHA2567eaaaa6010bbcd6bb8c9ad08d4b0966c7aedc9b2ac24758f170012ac36e508b5
SHA5127d010cd47b7d1adf66f9c97afc6c3805997aa5c7cc6ff13eddee81f24cf2b95a3fe375ec5b3d6185c0bc8840b4ad91ae143c73a39af26391cc182ab6a1793ba5
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Filesize
902KB
MD5480a66902e6e7cdafaa6711e8697ff8c
SHA16ac730962e7c1dba9e2ecc5733a506544f3c8d11
SHA2567eaaaa6010bbcd6bb8c9ad08d4b0966c7aedc9b2ac24758f170012ac36e508b5
SHA5127d010cd47b7d1adf66f9c97afc6c3805997aa5c7cc6ff13eddee81f24cf2b95a3fe375ec5b3d6185c0bc8840b4ad91ae143c73a39af26391cc182ab6a1793ba5
-
Filesize
902KB
MD5480a66902e6e7cdafaa6711e8697ff8c
SHA16ac730962e7c1dba9e2ecc5733a506544f3c8d11
SHA2567eaaaa6010bbcd6bb8c9ad08d4b0966c7aedc9b2ac24758f170012ac36e508b5
SHA5127d010cd47b7d1adf66f9c97afc6c3805997aa5c7cc6ff13eddee81f24cf2b95a3fe375ec5b3d6185c0bc8840b4ad91ae143c73a39af26391cc182ab6a1793ba5