Analysis
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max time kernel
149s -
max time network
154s -
platform
windows7_x64 -
resource
win7-20230220-en -
resource tags
arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system -
submitted
11/06/2023, 20:08
Static task
static1
Behavioral task
behavioral1
Sample
b4533d48dedbb8bd30a79e21b4bea37222d704c3468bbd3e1b0ff513bca0a5f5.exe
Resource
win7-20230220-en
Behavioral task
behavioral2
Sample
b4533d48dedbb8bd30a79e21b4bea37222d704c3468bbd3e1b0ff513bca0a5f5.exe
Resource
win10v2004-20230220-en
General
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Target
b4533d48dedbb8bd30a79e21b4bea37222d704c3468bbd3e1b0ff513bca0a5f5.exe
-
Size
5.9MB
-
MD5
e5777dd1c12775eedbbc413ae70414ac
-
SHA1
69e5a7cfabde4dad6b0d8cc0654e644de8657645
-
SHA256
b4533d48dedbb8bd30a79e21b4bea37222d704c3468bbd3e1b0ff513bca0a5f5
-
SHA512
126a80709e8c043b08909a7fc56fac80d8c4b37dd18f253594361dcc88d1f24c8ff531114dca45144fec53fe24a2f20c536c58f631e612baeb872e5db088fd75
-
SSDEEP
98304:CF3wCi9lXaYrya6XEqDUIhZUAkY8ZEhQNovhKexz6cvP2WjQWH0FBZbOEuK6KC3S:CvZfjUI8Povh7660FzKEKQ2ScNPglvOs
Malware Config
Signatures
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Executes dropped EXE 1 IoCs
pid Process 584 feizashan.exe -
Loads dropped DLL 2 IoCs
pid Process 1216 b4533d48dedbb8bd30a79e21b4bea37222d704c3468bbd3e1b0ff513bca0a5f5.exe 1216 b4533d48dedbb8bd30a79e21b4bea37222d704c3468bbd3e1b0ff513bca0a5f5.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.
description ioc Process File opened for modification \??\PhysicalDrive0 b4533d48dedbb8bd30a79e21b4bea37222d704c3468bbd3e1b0ff513bca0a5f5.exe File opened for modification \??\PhysicalDrive0 feizashan.exe -
Program crash 1 IoCs
pid pid_target Process procid_target 1532 1216 WerFault.exe 26 -
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\A8985D3A65E5E5C4B2D7D66D40C6DD2FB19C5436 b4533d48dedbb8bd30a79e21b4bea37222d704c3468bbd3e1b0ff513bca0a5f5.exe Set value (data) \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\A8985D3A65E5E5C4B2D7D66D40C6DD2FB19C5436\Blob = 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 b4533d48dedbb8bd30a79e21b4bea37222d704c3468bbd3e1b0ff513bca0a5f5.exe -
Suspicious use of SetWindowsHookEx 4 IoCs
pid Process 1216 b4533d48dedbb8bd30a79e21b4bea37222d704c3468bbd3e1b0ff513bca0a5f5.exe 1216 b4533d48dedbb8bd30a79e21b4bea37222d704c3468bbd3e1b0ff513bca0a5f5.exe 584 feizashan.exe 584 feizashan.exe -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 1216 wrote to memory of 584 1216 b4533d48dedbb8bd30a79e21b4bea37222d704c3468bbd3e1b0ff513bca0a5f5.exe 27 PID 1216 wrote to memory of 584 1216 b4533d48dedbb8bd30a79e21b4bea37222d704c3468bbd3e1b0ff513bca0a5f5.exe 27 PID 1216 wrote to memory of 584 1216 b4533d48dedbb8bd30a79e21b4bea37222d704c3468bbd3e1b0ff513bca0a5f5.exe 27 PID 1216 wrote to memory of 584 1216 b4533d48dedbb8bd30a79e21b4bea37222d704c3468bbd3e1b0ff513bca0a5f5.exe 27
Processes
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C:\Users\Admin\AppData\Local\Temp\b4533d48dedbb8bd30a79e21b4bea37222d704c3468bbd3e1b0ff513bca0a5f5.exe"C:\Users\Admin\AppData\Local\Temp\b4533d48dedbb8bd30a79e21b4bea37222d704c3468bbd3e1b0ff513bca0a5f5.exe"1⤵
- Loads dropped DLL
- Writes to the Master Boot Record (MBR)
- Modifies system certificate store
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1216 -
C:\Users\Admin\AppData\Local\Temp\feizashan.exeC:\Users\Admin\AppData\Local\Temp\feizashan.exe2⤵
- Executes dropped EXE
- Writes to the Master Boot Record (MBR)
- Suspicious use of SetWindowsHookEx
PID:584
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1216 -s 12162⤵
- Program crash
PID:1532
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
-
Filesize
5.9MB
MD5e5777dd1c12775eedbbc413ae70414ac
SHA169e5a7cfabde4dad6b0d8cc0654e644de8657645
SHA256b4533d48dedbb8bd30a79e21b4bea37222d704c3468bbd3e1b0ff513bca0a5f5
SHA512126a80709e8c043b08909a7fc56fac80d8c4b37dd18f253594361dcc88d1f24c8ff531114dca45144fec53fe24a2f20c536c58f631e612baeb872e5db088fd75
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Filesize
5.9MB
MD5e5777dd1c12775eedbbc413ae70414ac
SHA169e5a7cfabde4dad6b0d8cc0654e644de8657645
SHA256b4533d48dedbb8bd30a79e21b4bea37222d704c3468bbd3e1b0ff513bca0a5f5
SHA512126a80709e8c043b08909a7fc56fac80d8c4b37dd18f253594361dcc88d1f24c8ff531114dca45144fec53fe24a2f20c536c58f631e612baeb872e5db088fd75
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Filesize
5.9MB
MD5e5777dd1c12775eedbbc413ae70414ac
SHA169e5a7cfabde4dad6b0d8cc0654e644de8657645
SHA256b4533d48dedbb8bd30a79e21b4bea37222d704c3468bbd3e1b0ff513bca0a5f5
SHA512126a80709e8c043b08909a7fc56fac80d8c4b37dd18f253594361dcc88d1f24c8ff531114dca45144fec53fe24a2f20c536c58f631e612baeb872e5db088fd75
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Filesize
912B
MD55d3a45abfd1a5aabf031f37b97ecd347
SHA153bbb0c89ceae3feeed74d2da54e28848710b7d3
SHA25626bf2b503ac921b85a10bcfe669a1d9f1dd5ab4769e695d567db204d3ea19c0d
SHA5122b7c65578b2ba7bd74062a5563872e578adbd978bd42773198b49471d067070e6d19339028a5163403819d0924d2c9e72f85028f82626d75ab90f50426cb0d4b
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Filesize
122B
MD589563a6f6d0b666313b8a8d62c9d03eb
SHA1abd494408843560ad50756d2fb07f1b03943a1b1
SHA25648bfbc817c1379ab208ebf18a3287c398ee53d908ef0a4b68cd01c377fb0e325
SHA5121310180f853245b37cde5e8f8229b06e56a99ed2de747fa2109561671d09bf01d1c820e72bc8c7aa03ed21af1d924efb487e2dc5ef464489dc48bf9a270ded43
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Filesize
5.9MB
MD5e5777dd1c12775eedbbc413ae70414ac
SHA169e5a7cfabde4dad6b0d8cc0654e644de8657645
SHA256b4533d48dedbb8bd30a79e21b4bea37222d704c3468bbd3e1b0ff513bca0a5f5
SHA512126a80709e8c043b08909a7fc56fac80d8c4b37dd18f253594361dcc88d1f24c8ff531114dca45144fec53fe24a2f20c536c58f631e612baeb872e5db088fd75
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Filesize
5.9MB
MD5e5777dd1c12775eedbbc413ae70414ac
SHA169e5a7cfabde4dad6b0d8cc0654e644de8657645
SHA256b4533d48dedbb8bd30a79e21b4bea37222d704c3468bbd3e1b0ff513bca0a5f5
SHA512126a80709e8c043b08909a7fc56fac80d8c4b37dd18f253594361dcc88d1f24c8ff531114dca45144fec53fe24a2f20c536c58f631e612baeb872e5db088fd75