flawedammyy | 1831806fc27d496f0f9dcfd8402724189deaeb5f8bcf0118f3d6484d0bdee9ed

Analysis

max time kernel
151s
max time network
141s
platform
windows10-2004_x64
resource
win10v2004-20230703-en
resource tags

arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system
submitted
20/07/2023, 11:21

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

description	ioc	Process
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
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

Modifies data under HKEY_USERS 9 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	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	aa.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Ammyy	aa.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Ammyy\Admin\hr = 537d56736608796d5b5b4e155253dc4fa560b4e5b16b	aa.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	aa.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy\Admin	aa.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Ammyy\Admin	aa.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Ammyy\Admin\hr3 = 310795209a2bf07e0174edb9edc842943b5ba6990608cac3a44719c92c44c43391a5ec9c1c205f18c8ff017df9ce202335b3fe6eca70cb361e7ffdd109462f189f40b135	aa.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
3376	aa.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
3376	aa.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4536 wrote to memory of 3376	4536	aa.exe	86
PID 4536 wrote to memory of 3376	4536	aa.exe	86
PID 4536 wrote to memory of 3376	4536	aa.exe	86

C:\Users\Admin\AppData\Local\Temp\aa.exe
"C:\Users\Admin\AppData\Local\Temp\aa.exe"
1⤵
PID:2824

C:\Users\Admin\AppData\Local\Temp\aa.exe
"C:\Users\Admin\AppData\Local\Temp\aa.exe" -service -lunch
1⤵
- Suspicious use of WriteProcessMemory
PID:4536
- 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:3376

C:\ProgramData\AMMYY\hr

Filesize
22B

MD5
61619b999a9d6e1fe31c9bb75e51ddb4

SHA1
f192876ed08ed068b4949e068094b97f8375cf3c

SHA256
5aeff24a53e5b0947502ee51b32cf59088457563d798078a44077faf3a480ba6

SHA512
35cd282db937e78143fa9a25cd3d2d0e464d642ec4886da1910e08f21a5fd9a1780f124df8ee26601cdf2ee66a32842a2fdf559adc6c76f7d602220496a34686

Download Submit
C:\ProgramData\AMMYY\hr3

Filesize
68B

MD5
eae3d59a12d198042d24e56122e9262f

SHA1
be4089bb720ebbbdf798ef2a5dfff613b9dd1fc5

SHA256
9060843bc51c2e88342d96cc5f9c80d2c7a4b11b97d8f9e51e87c54ee3b83b38

SHA512
34cb4dad3571298fa19da376f66e144c38da6b74fa18fc55f79eb2cc42484ad66dc4763e1f2afab36e85611025c2199f9fa76057b6afe7d1f84ccef980adb82b

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

Filesize
271B

MD5
714f2508d4227f74b6adacfef73815d8

SHA1
a35c8a796e4453c0c09d011284b806d25bdad04c

SHA256
a5579945f23747541c0e80b79e79375d4ca44feafcd425ee9bd9302e35312480

SHA512
1171a6eac6d237053815a40c2bcc2df9f4209902d6157777377228f3b618cad50c88a9519444ed5c447cf744e4655272fb42dabb567df85b4b19b1a2f1d086d8

Download Submit