Analysis
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max time kernel
170s -
max time network
190s -
platform
windows10-2004_x64 -
resource
win10v2004-20231127-en -
resource tags
arch:x64arch:x86image:win10v2004-20231127-enlocale:en-usos:windows10-2004-x64system -
submitted
01-12-2023 15:14
Behavioral task
behavioral1
Sample
6f2258383b92bfaf425f49fc7a5901bfa97a334de49ce015cf65396125c13d20.exe
Resource
win7-20231020-en
Behavioral task
behavioral2
Sample
6f2258383b92bfaf425f49fc7a5901bfa97a334de49ce015cf65396125c13d20.exe
Resource
win10v2004-20231127-en
General
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Target
6f2258383b92bfaf425f49fc7a5901bfa97a334de49ce015cf65396125c13d20.exe
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Size
746KB
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MD5
f8cd52b70a11a1fb3f29c6f89ff971ec
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SHA1
6a0c46818a6a10c2c5a98a0cce65fbaf95caa344
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SHA256
6f2258383b92bfaf425f49fc7a5901bfa97a334de49ce015cf65396125c13d20
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SHA512
987b6b288a454b6198d4e7f94b7bba67cafe37f9654cd3cd72134a85958efd2125596ae48e66a8ee49ee3f4199dac7f136e1831f2bf4015f25d2980f0b866abe
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SSDEEP
12288:PUYpJqMH2OwlaUPcWWw5XZV8f64RteVpN5ETMasTjcP6gX:zpJJWOwlaUPcWWwRZb4Rt+N5WMasHoX
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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Drops file in System32 directory 4 IoCs
Processes:
6f2258383b92bfaf425f49fc7a5901bfa97a334de49ce015cf65396125c13d20.exedescription ioc process File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5 6f2258383b92bfaf425f49fc7a5901bfa97a334de49ce015cf65396125c13d20.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE 6f2258383b92bfaf425f49fc7a5901bfa97a334de49ce015cf65396125c13d20.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies 6f2258383b92bfaf425f49fc7a5901bfa97a334de49ce015cf65396125c13d20.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5 6f2258383b92bfaf425f49fc7a5901bfa97a334de49ce015cf65396125c13d20.exe -
Modifies data under HKEY_USERS 9 IoCs
Processes:
6f2258383b92bfaf425f49fc7a5901bfa97a334de49ce015cf65396125c13d20.exedescription ioc process Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:" 6f2258383b92bfaf425f49fc7a5901bfa97a334de49ce015cf65396125c13d20.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:" 6f2258383b92bfaf425f49fc7a5901bfa97a334de49ce015cf65396125c13d20.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy\Admin 6f2258383b92bfaf425f49fc7a5901bfa97a334de49ce015cf65396125c13d20.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE 6f2258383b92bfaf425f49fc7a5901bfa97a334de49ce015cf65396125c13d20.exe Key created \REGISTRY\USER\.DEFAULT\Software\Ammyy 6f2258383b92bfaf425f49fc7a5901bfa97a334de49ce015cf65396125c13d20.exe Set value (data) \REGISTRY\USER\.DEFAULT\Software\Ammyy\Admin\hr3 = cdbfe6aca5d518ec0bdc264e18cae3eb0b39eccabc12289b6ce4fcfe8be1cee67a83910ea94b6f76e52419186b47a52a2f9466fe1466ddf69d3e7af8f2f0f97700452216 6f2258383b92bfaf425f49fc7a5901bfa97a334de49ce015cf65396125c13d20.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix 6f2258383b92bfaf425f49fc7a5901bfa97a334de49ce015cf65396125c13d20.exe Set value (data) \REGISTRY\USER\.DEFAULT\Software\Ammyy\Admin\hr = 537d56736608796d5b5b4e1552531f2fe3aa3e7bb26b 6f2258383b92bfaf425f49fc7a5901bfa97a334de49ce015cf65396125c13d20.exe Key created \REGISTRY\USER\.DEFAULT\Software\Ammyy\Admin 6f2258383b92bfaf425f49fc7a5901bfa97a334de49ce015cf65396125c13d20.exe -
Suspicious use of FindShellTrayWindow 1 IoCs
Processes:
6f2258383b92bfaf425f49fc7a5901bfa97a334de49ce015cf65396125c13d20.exepid process 1768 6f2258383b92bfaf425f49fc7a5901bfa97a334de49ce015cf65396125c13d20.exe -
Suspicious use of SendNotifyMessage 1 IoCs
Processes:
6f2258383b92bfaf425f49fc7a5901bfa97a334de49ce015cf65396125c13d20.exepid process 1768 6f2258383b92bfaf425f49fc7a5901bfa97a334de49ce015cf65396125c13d20.exe -
Suspicious use of WriteProcessMemory 3 IoCs
Processes:
6f2258383b92bfaf425f49fc7a5901bfa97a334de49ce015cf65396125c13d20.exedescription pid process target process PID 1420 wrote to memory of 1768 1420 6f2258383b92bfaf425f49fc7a5901bfa97a334de49ce015cf65396125c13d20.exe 6f2258383b92bfaf425f49fc7a5901bfa97a334de49ce015cf65396125c13d20.exe PID 1420 wrote to memory of 1768 1420 6f2258383b92bfaf425f49fc7a5901bfa97a334de49ce015cf65396125c13d20.exe 6f2258383b92bfaf425f49fc7a5901bfa97a334de49ce015cf65396125c13d20.exe PID 1420 wrote to memory of 1768 1420 6f2258383b92bfaf425f49fc7a5901bfa97a334de49ce015cf65396125c13d20.exe 6f2258383b92bfaf425f49fc7a5901bfa97a334de49ce015cf65396125c13d20.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\6f2258383b92bfaf425f49fc7a5901bfa97a334de49ce015cf65396125c13d20.exe"C:\Users\Admin\AppData\Local\Temp\6f2258383b92bfaf425f49fc7a5901bfa97a334de49ce015cf65396125c13d20.exe"1⤵PID:3248
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C:\Users\Admin\AppData\Local\Temp\6f2258383b92bfaf425f49fc7a5901bfa97a334de49ce015cf65396125c13d20.exe"C:\Users\Admin\AppData\Local\Temp\6f2258383b92bfaf425f49fc7a5901bfa97a334de49ce015cf65396125c13d20.exe" -service -lunch1⤵
- Suspicious use of WriteProcessMemory
PID:1420 -
C:\Users\Admin\AppData\Local\Temp\6f2258383b92bfaf425f49fc7a5901bfa97a334de49ce015cf65396125c13d20.exe"C:\Users\Admin\AppData\Local\Temp\6f2258383b92bfaf425f49fc7a5901bfa97a334de49ce015cf65396125c13d20.exe"2⤵
- Drops file in System32 directory
- Modifies data under HKEY_USERS
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:1768
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Network
MITRE ATT&CK Matrix
Replay Monitor
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Downloads
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Filesize
22B
MD522f784067541187933d35a5b96eaa760
SHA127ea88394a07f26c754000e9bd978accc8c6535d
SHA256753573f0c0e67d536f0021860914586c0b29ad744e65ca4afb8daf7bd3494329
SHA512ea16bbb8a11753e14244146f7760a32ff571a7542cc19af23f5eaa0cf63e22ccce0915c11e68f867f48eae3cfc59075eb8eb7b0d4cd38e617cb733118274f7a0
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Filesize
68B
MD532ab3de2e311a5c20a07af98d185f029
SHA1342b41b34d23fd68bd8deca6c578ce6071dfd3f5
SHA2567a8febc62f95972bb71cb4557c111dec4f5293f7cd7a1b8997017f71c340d413
SHA512b4cb02f5e67798aeffbde0f109f81adbd71523e19488a7799a24d25dc35414259b1ed16c626eda738db2fb74420a210e04467392915fa7b2deae5251dbcc706f
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Filesize
271B
MD5714f2508d4227f74b6adacfef73815d8
SHA1a35c8a796e4453c0c09d011284b806d25bdad04c
SHA256a5579945f23747541c0e80b79e79375d4ca44feafcd425ee9bd9302e35312480
SHA5121171a6eac6d237053815a40c2bcc2df9f4209902d6157777377228f3b618cad50c88a9519444ed5c447cf744e4655272fb42dabb567df85b4b19b1a2f1d086d8