Analysis
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max time kernel
41s -
max time network
106s -
platform
windows7_x64 -
resource
win7-20230220-en -
resource tags
arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system -
submitted
17-03-2023 06:28
Static task
static1
Behavioral task
behavioral1
Sample
avast_secure_browser_setup.exe
Resource
win7-20230220-en
General
-
Target
avast_secure_browser_setup.exe
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Size
5.8MB
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MD5
5386b850641bfc48c53330e873160d0d
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SHA1
694ead74714d6a39eeb8226032b02aff3915bae7
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SHA256
ac17339c53c46b70cd7786ad38273d8b3ce60ed0e3c6b621cb8b2f14810df26f
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SHA512
3432cd1f1553549922b064af38695647a4f0dbc7781a67d037d4721f1c7312edf384f0c452b6bcc4191ed266784a1078eb793ba73926f633a7a794d89f01084d
-
SSDEEP
98304:natd2zwYrSdKBdUXrfE2P0SG8+twcGXu0xyRq/Hugz7GGemT:n2d2zwYrSdaCbfLJG8+qF7gR//Gey
Malware Config
Signatures
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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 aj32E7.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion aj32E7.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-1-5-21-2647223082-2067913677-935928954-1000\Control Panel\International\Geo\Nation avast_secure_browser_setup.exe Key value queried \REGISTRY\USER\S-1-5-21-2647223082-2067913677-935928954-1000\Control Panel\International\Geo\Nation aj32E7.exe -
Executes dropped EXE 1 IoCs
pid Process 636 aj32E7.exe -
Loads dropped DLL 14 IoCs
pid Process 2000 avast_secure_browser_setup.exe 2000 avast_secure_browser_setup.exe 2000 avast_secure_browser_setup.exe 2000 avast_secure_browser_setup.exe 2000 avast_secure_browser_setup.exe 2000 avast_secure_browser_setup.exe 2000 avast_secure_browser_setup.exe 636 aj32E7.exe 636 aj32E7.exe 636 aj32E7.exe 636 aj32E7.exe 636 aj32E7.exe 636 aj32E7.exe 636 aj32E7.exe -
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Checks for any installed AV software in registry 1 TTPs 4 IoCs
description ioc Process Key opened \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\AVAST Software\Avast avast_secure_browser_setup.exe Key opened \REGISTRY\USER\S-1-5-21-2647223082-2067913677-935928954-1000\SOFTWARE\AVAST Software\Avast avast_secure_browser_setup.exe Key opened \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\AVAST Software\Avast aj32E7.exe Key opened \REGISTRY\USER\S-1-5-21-2647223082-2067913677-935928954-1000\SOFTWARE\AVAST Software\Avast aj32E7.exe -
Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs
Bootkits write to the MBR to gain persistence at a level below the operating system.
description ioc Process File opened for modification \??\PhysicalDrive0 aj32E7.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
-
Checks SCSI registry key(s) 3 TTPs 1 IoCs
SCSI information is often read in order to detect sandboxing environments.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI aj32E7.exe -
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D4DE20D05E66FC53FE1A50882C78DB2852CAE474 aj32E7.exe Set value (data) \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D4DE20D05E66FC53FE1A50882C78DB2852CAE474\Blob = 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 aj32E7.exe -
Suspicious behavior: EnumeratesProcesses 14 IoCs
pid Process 2000 avast_secure_browser_setup.exe 2000 avast_secure_browser_setup.exe 636 aj32E7.exe 2000 avast_secure_browser_setup.exe 636 aj32E7.exe 636 aj32E7.exe 636 aj32E7.exe 636 aj32E7.exe 636 aj32E7.exe 2000 avast_secure_browser_setup.exe 2000 avast_secure_browser_setup.exe 2000 avast_secure_browser_setup.exe 2000 avast_secure_browser_setup.exe 2000 avast_secure_browser_setup.exe -
Suspicious use of SetWindowsHookEx 5 IoCs
pid Process 2000 avast_secure_browser_setup.exe 2000 avast_secure_browser_setup.exe 2000 avast_secure_browser_setup.exe 2000 avast_secure_browser_setup.exe 2000 avast_secure_browser_setup.exe -
Suspicious use of WriteProcessMemory 7 IoCs
description pid Process procid_target PID 2000 wrote to memory of 636 2000 avast_secure_browser_setup.exe 28 PID 2000 wrote to memory of 636 2000 avast_secure_browser_setup.exe 28 PID 2000 wrote to memory of 636 2000 avast_secure_browser_setup.exe 28 PID 2000 wrote to memory of 636 2000 avast_secure_browser_setup.exe 28 PID 2000 wrote to memory of 636 2000 avast_secure_browser_setup.exe 28 PID 2000 wrote to memory of 636 2000 avast_secure_browser_setup.exe 28 PID 2000 wrote to memory of 636 2000 avast_secure_browser_setup.exe 28
Processes
-
C:\Users\Admin\AppData\Local\Temp\avast_secure_browser_setup.exe"C:\Users\Admin\AppData\Local\Temp\avast_secure_browser_setup.exe"1⤵
- Checks computer location settings
- Loads dropped DLL
- Checks for any installed AV software in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2000 -
C:\Users\Admin\AppData\Local\Temp\aj32E7.exe"C:\Users\Admin\AppData\Local\Temp\aj32E7.exe" /relaunch=8 /was_elevated=1 /tagdata2⤵
- Checks BIOS information in registry
- Checks computer location settings
- Executes dropped EXE
- Loads dropped DLL
- Checks for any installed AV software in registry
- Writes to the Master Boot Record (MBR)
- Checks SCSI registry key(s)
- Modifies system certificate store
- Suspicious behavior: EnumeratesProcesses
PID:636
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
-
Filesize
5.8MB
MD58695bee7f56b42160bdfdbc9583e2e5d
SHA125f2d8339e7fde407d6501f3909f4345c4a6b4bb
SHA256c14417b927c2a571960d418388cdea60b757c3f9ab3c1f8dd681b6aa29eefa07
SHA51292662db658f6552a5c574a74e54d08b1ccf1b1c7c2f025a1e867052b2f86518d625aa2eca19434b0172325c793ad3c50947f7aaa2845749d47ef47e23771e7f0
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Filesize
5.8MB
MD58695bee7f56b42160bdfdbc9583e2e5d
SHA125f2d8339e7fde407d6501f3909f4345c4a6b4bb
SHA256c14417b927c2a571960d418388cdea60b757c3f9ab3c1f8dd681b6aa29eefa07
SHA51292662db658f6552a5c574a74e54d08b1ccf1b1c7c2f025a1e867052b2f86518d625aa2eca19434b0172325c793ad3c50947f7aaa2845749d47ef47e23771e7f0
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Filesize
22B
MD51b6886a72f78df90d50cadc94827ace4
SHA19b542a5c5bc0fc0bb912c07c425ab6f1e7605dff
SHA256789d3f56ba0e6881eed518328ed632ef9cf36527007717fbf64013ceadf17c3d
SHA512c11b84eb6a06db9bdf3f5cc0e2eb311ef68b75ddd88e4005001229591c60e5dcde6066ebd5b0407fd3d27c353200f432b5c91bcee837b5718f75e76213a04bc9
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Filesize
2.0MB
MD53f4f65c3551435aa4f70b23db238e027
SHA110a50d1003a2da42b869527098758bbd0c5a0b93
SHA2563d52f17598297580cc04e8698010d8234b199250803f826fa03031a8f8507e7f
SHA51215b9f0ef917167ed1c3fcbf6235ec277665abb662f26bf338bda2dcc815503b27eab4bfea88f5e4609a40a02f88a87a28d02ca1e4a7575905cb9217b58151a07
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Filesize
195KB
MD513ce1d84ff08bc135a9fb09fe6ce07e4
SHA14a8baf8c77dfd2975d058cd46ac7751d63819397
SHA256bf42db58fdda71b75d247ecf4b8aad91f80505b96e1c753c3698d2c01d051174
SHA512d59f29794ebb972ef6f4471c8981da5da2f59e5da7f5846ab82d013de043ece156b1ee0598c4227f128a33806bf8831d6f458f9195d63a2996fc24dbc14b4e21
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Filesize
6.3MB
MD5b9375166489134d10113829db8e2e5fe
SHA1e52955422d111535a35aa0811b95efb12d4681f0
SHA256cb67805b28090d4cc62156078b55be9d9f36a59b88d0aaa94694855979ca3a24
SHA51252c9e54fbae21b43079ffeec4265b7a0fb34e925dade48aac1d195ac7c2d81195371573fc7cec4a00d81ff733dc886a62b796e340cd7c31e6d6757c2250a59c3
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Filesize
126KB
MD5d73697fed034fa38ae25a64a34e37bde
SHA1577e00018dc33bdf8cec307485745f551fae09bb
SHA256e21d363b60c47e87e7f4dff0ccaa095d190b77ea872514f1bb554c61c82c2546
SHA512aa49eebd731b0218d4e4b48e5dc542f0fc1a1f3962f352687bcacb594f422d904bcd25c04bf72308136365c1955463797bcf883f5917615da912763a6593db4c
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Filesize
127KB
MD5764e0dc4af6828aac54c96972536d0a4
SHA1cbaa169e875d071731b05fc7fa1ecaf8d5452fb3
SHA2562dfc6b24788ec9004d6daf54597542d387bece8350e64b7d86fbba68dfed4e20
SHA512d86d2a309408c0ee4c1bdc6b8aada93d1203dab07494804188179cb1532b890a4e2c83243c3085ba8f1d17b4b3ee4459ca2983fd49fc5cc1bf704f76e06559e8
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Filesize
36KB
MD5ba032451dc0401e184b4377cf5eea4bc
SHA19fd9a142ff4d5712ee62f858727b656a5746b39d
SHA256cb104ea43c3eaae04d01846b0324d6f8df1edc82b51319d20bdf0b760cc64c0f
SHA5123d33309ade02a785504566375130a61d862d59e601d40c522a2b54a44e159f5e2421e953a98793c2e5dc0b62355dc20527cc73ed11a43365ce9484ce400ecdcb
-
Filesize
93KB
MD542afe6ceee00468fcc455ae603235863
SHA1bf1dc1b5e8cbd4456cdaa2929f3e188a52ac01fe
SHA2560a7cfcaa9c26ac66b723eb882067ffb1ece1fc8fb188869ffe13acac9101f30f
SHA51286cfcd9ec6c4b461a2bfc52beddc1968cbdad1884dea92d8571d2404bf717011148649cf674939ae37c1d723fdb0214639db90acf3265c225300a194080b4623
-
Filesize
5.8MB
MD58695bee7f56b42160bdfdbc9583e2e5d
SHA125f2d8339e7fde407d6501f3909f4345c4a6b4bb
SHA256c14417b927c2a571960d418388cdea60b757c3f9ab3c1f8dd681b6aa29eefa07
SHA51292662db658f6552a5c574a74e54d08b1ccf1b1c7c2f025a1e867052b2f86518d625aa2eca19434b0172325c793ad3c50947f7aaa2845749d47ef47e23771e7f0
-
Filesize
2.0MB
MD53f4f65c3551435aa4f70b23db238e027
SHA110a50d1003a2da42b869527098758bbd0c5a0b93
SHA2563d52f17598297580cc04e8698010d8234b199250803f826fa03031a8f8507e7f
SHA51215b9f0ef917167ed1c3fcbf6235ec277665abb662f26bf338bda2dcc815503b27eab4bfea88f5e4609a40a02f88a87a28d02ca1e4a7575905cb9217b58151a07
-
Filesize
195KB
MD513ce1d84ff08bc135a9fb09fe6ce07e4
SHA14a8baf8c77dfd2975d058cd46ac7751d63819397
SHA256bf42db58fdda71b75d247ecf4b8aad91f80505b96e1c753c3698d2c01d051174
SHA512d59f29794ebb972ef6f4471c8981da5da2f59e5da7f5846ab82d013de043ece156b1ee0598c4227f128a33806bf8831d6f458f9195d63a2996fc24dbc14b4e21
-
Filesize
127KB
MD5764e0dc4af6828aac54c96972536d0a4
SHA1cbaa169e875d071731b05fc7fa1ecaf8d5452fb3
SHA2562dfc6b24788ec9004d6daf54597542d387bece8350e64b7d86fbba68dfed4e20
SHA512d86d2a309408c0ee4c1bdc6b8aada93d1203dab07494804188179cb1532b890a4e2c83243c3085ba8f1d17b4b3ee4459ca2983fd49fc5cc1bf704f76e06559e8
-
Filesize
36KB
MD5ba032451dc0401e184b4377cf5eea4bc
SHA19fd9a142ff4d5712ee62f858727b656a5746b39d
SHA256cb104ea43c3eaae04d01846b0324d6f8df1edc82b51319d20bdf0b760cc64c0f
SHA5123d33309ade02a785504566375130a61d862d59e601d40c522a2b54a44e159f5e2421e953a98793c2e5dc0b62355dc20527cc73ed11a43365ce9484ce400ecdcb
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Filesize
93KB
MD542afe6ceee00468fcc455ae603235863
SHA1bf1dc1b5e8cbd4456cdaa2929f3e188a52ac01fe
SHA2560a7cfcaa9c26ac66b723eb882067ffb1ece1fc8fb188869ffe13acac9101f30f
SHA51286cfcd9ec6c4b461a2bfc52beddc1968cbdad1884dea92d8571d2404bf717011148649cf674939ae37c1d723fdb0214639db90acf3265c225300a194080b4623
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Filesize
2.0MB
MD53f4f65c3551435aa4f70b23db238e027
SHA110a50d1003a2da42b869527098758bbd0c5a0b93
SHA2563d52f17598297580cc04e8698010d8234b199250803f826fa03031a8f8507e7f
SHA51215b9f0ef917167ed1c3fcbf6235ec277665abb662f26bf338bda2dcc815503b27eab4bfea88f5e4609a40a02f88a87a28d02ca1e4a7575905cb9217b58151a07
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Filesize
126KB
MD5d73697fed034fa38ae25a64a34e37bde
SHA1577e00018dc33bdf8cec307485745f551fae09bb
SHA256e21d363b60c47e87e7f4dff0ccaa095d190b77ea872514f1bb554c61c82c2546
SHA512aa49eebd731b0218d4e4b48e5dc542f0fc1a1f3962f352687bcacb594f422d904bcd25c04bf72308136365c1955463797bcf883f5917615da912763a6593db4c
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Filesize
126KB
MD5d73697fed034fa38ae25a64a34e37bde
SHA1577e00018dc33bdf8cec307485745f551fae09bb
SHA256e21d363b60c47e87e7f4dff0ccaa095d190b77ea872514f1bb554c61c82c2546
SHA512aa49eebd731b0218d4e4b48e5dc542f0fc1a1f3962f352687bcacb594f422d904bcd25c04bf72308136365c1955463797bcf883f5917615da912763a6593db4c
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Filesize
195KB
MD513ce1d84ff08bc135a9fb09fe6ce07e4
SHA14a8baf8c77dfd2975d058cd46ac7751d63819397
SHA256bf42db58fdda71b75d247ecf4b8aad91f80505b96e1c753c3698d2c01d051174
SHA512d59f29794ebb972ef6f4471c8981da5da2f59e5da7f5846ab82d013de043ece156b1ee0598c4227f128a33806bf8831d6f458f9195d63a2996fc24dbc14b4e21
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Filesize
127KB
MD5764e0dc4af6828aac54c96972536d0a4
SHA1cbaa169e875d071731b05fc7fa1ecaf8d5452fb3
SHA2562dfc6b24788ec9004d6daf54597542d387bece8350e64b7d86fbba68dfed4e20
SHA512d86d2a309408c0ee4c1bdc6b8aada93d1203dab07494804188179cb1532b890a4e2c83243c3085ba8f1d17b4b3ee4459ca2983fd49fc5cc1bf704f76e06559e8
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Filesize
36KB
MD5ba032451dc0401e184b4377cf5eea4bc
SHA19fd9a142ff4d5712ee62f858727b656a5746b39d
SHA256cb104ea43c3eaae04d01846b0324d6f8df1edc82b51319d20bdf0b760cc64c0f
SHA5123d33309ade02a785504566375130a61d862d59e601d40c522a2b54a44e159f5e2421e953a98793c2e5dc0b62355dc20527cc73ed11a43365ce9484ce400ecdcb
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Filesize
93KB
MD542afe6ceee00468fcc455ae603235863
SHA1bf1dc1b5e8cbd4456cdaa2929f3e188a52ac01fe
SHA2560a7cfcaa9c26ac66b723eb882067ffb1ece1fc8fb188869ffe13acac9101f30f
SHA51286cfcd9ec6c4b461a2bfc52beddc1968cbdad1884dea92d8571d2404bf717011148649cf674939ae37c1d723fdb0214639db90acf3265c225300a194080b4623
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Filesize
5.7MB
MD5f36f05628b515262db197b15c7065b40
SHA174a8005379f26dd0de952acab4e3fc5459cde243
SHA25667abd9e211b354fa222e7926c2876c4b3a7aca239c0af47c756ee1b6db6e6d31
SHA512280390b1cf1b6b1e75eaa157adaf89135963d366b48686d48921a654527f9c1505c195ca1fc16dc85b8f13b2994841ca7877a63af708883418a1d588afa3dbe8