flawedammyy | 1831806fc27d496f0f9dcfd8402724189deaeb5f8bcf0118f3d6484d0bdee9ed

Analysis

max time kernel
150s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-20230703-en
resource tags

arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system
submitted
21-07-2023 09:50

Target

aa.exe
Size

755KB
MD5

11bc606269a161555431bacf37f7c1e4
SHA1

63c52b0ac68ab7464e2cd777442a5807db9b5383
SHA256

1831806fc27d496f0f9dcfd8402724189deaeb5f8bcf0118f3d6484d0bdee9ed
SHA512

0be867fce920d493d2a37f996627bceea87621ba4071ae4383dd4a24748eedf7dc5ca6db089217b82ec38870248c6840f785683bf359d1014c7109e7d46dd90f
SSDEEP

12288:XVFUEuNmwvGrw9i0aTGRGicBckyyFRtWY1i3FTsvOVV0gz:3UEUUw9RaTNicBrPFRtJ1iVTsC5z

Score

10^/10

FlawedAmmyy RAT
Remote-access trojan based on leaked code for the Ammyy remote admin software.
trojan flawedammyy

Drops file in System32 directory 4 IoCs

Processes:

aa.exe

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5	aa.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE	aa.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies	aa.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5	aa.exe

Modifies data under HKEY_USERS 9 IoCs

Processes:

aa.exe

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE	aa.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	aa.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy\Admin	aa.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Ammyy	aa.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Ammyy\Admin	aa.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Ammyy\Admin\hr = 537d56736608796d5b5b4e155253b6892be3f0e4b16b	aa.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Ammyy\Admin\hr3 = b76101e2100efce8857a0f4b9e97cb4e16139895a75d7f134a82f569c155d8016d8f9873f44de1f5a6ae94aa462170447a9d058f4caa35aa7c7069f9e53e37466aafca58	aa.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	aa.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	aa.exe

Suspicious use of FindShellTrayWindow 1 IoCs

Processes:

aa.exe

pid	Process
3016	aa.exe

Suspicious use of SendNotifyMessage 1 IoCs

Processes:

aa.exe

pid	Process
3016	aa.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

aa.exe

description	pid	Process	procid_target
PID 324 wrote to memory of 3016	324	aa.exe	84
PID 324 wrote to memory of 3016	324	aa.exe	84
PID 324 wrote to memory of 3016	324	aa.exe	84

C:\Users\Admin\AppData\Local\Temp\aa.exe
"C:\Users\Admin\AppData\Local\Temp\aa.exe"
1⤵
PID:3356

C:\Users\Admin\AppData\Local\Temp\aa.exe
"C:\Users\Admin\AppData\Local\Temp\aa.exe" -service -lunch
1⤵
- Suspicious use of WriteProcessMemory
PID:324
- C:\Users\Admin\AppData\Local\Temp\aa.exe
  "C:\Users\Admin\AppData\Local\Temp\aa.exe"
  2⤵
  - Drops file in System32 directory
  - Modifies data under HKEY_USERS
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  PID:3016

C:\ProgramData\AMMYY\hr

Filesize
22B

MD5
d0041050c998501f50b8868ee8b3d845

SHA1
5bc84e795ae6fcee44f562607d77c4351b70d1ac

SHA256
ae89d2192245b11ff7c20f98baf1e14b570f4fc1fd636985f5ffb2ce8a912d71

SHA512
7d6328cc54a61d6c690e9f5ae7dc7848d08feb3b43da365a20e3ddbdb7bb1b833d333557a99fdf7b23ea643ede41c749e2694f32ec6ca66af999feee3bdc61b7

Download Submit
C:\ProgramData\AMMYY\hr3

Filesize
68B

MD5
38af9ced743b9a71d3459ba1a22676df

SHA1
fdabc988950ef8575a5bebcceae3cee9565dd7a1

SHA256
c956626fdbd9d4c1ecda4853572059938c530a34cf3fc1781078f7fd6e9419aa

SHA512
98473fa52cb495353ebcd755bdbbe6fc4fe7dbc8479ec61d8bfac3dd140149c7fb0b5c4a4314d2ac54deb244c390750822e4514ea3e6ac35aa2b0ad697d147a6

Download Submit
C:\ProgramData\AMMYY\settings3.bin

Filesize
271B

MD5
714f2508d4227f74b6adacfef73815d8

SHA1
a35c8a796e4453c0c09d011284b806d25bdad04c

SHA256
a5579945f23747541c0e80b79e79375d4ca44feafcd425ee9bd9302e35312480

SHA512
1171a6eac6d237053815a40c2bcc2df9f4209902d6157777377228f3b618cad50c88a9519444ed5c447cf744e4655272fb42dabb567df85b4b19b1a2f1d086d8

Download Submit