flawedammyy | d0c08693a433c8a56813313ee2eb147c74ab8da375713f54412ddc4cf6619dd2

Analysis

max time kernel
150s
max time network
130s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
24-05-2024 13:05

Target

AA_v3.5.exe
Size

746KB
MD5

2cbf5657ffd8858a9597f296a60270c2
SHA1

b130611c92788337c4f6bb9e9454ff06eb409166
SHA256

9b3f4d6a9bae4d7f9cfe45e706db8fe4baef51ae12353941e8b1532b231e6eac
SHA512

06339a299c8c9ce55e9b96582e54e0bf9e04f894ceb47c07486adf8b0140c2a01fd0932207aca8112ee0b16ba8711fee9435e37339aafb94f167b5a736ee7d0b
SSDEEP

12288:6NgEvTkYGzXUMA7PTgM0YOg26y4RtcxcUwhqb3omaY80NP6gL:6XTszE7PTgM0YOgA4RtcbwhsSYFVL

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\INetCache\Content.IE5	AA_v3.5.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE	AA_v3.5.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies	AA_v3.5.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5	AA_v3.5.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\Content\CachePrefix	AA_v3.5.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	AA_v3.5.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Ammyy\Admin\hr = 537d567366087c69585c40145253fc424a2b93f2b26b	AA_v3.5.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Ammyy\Admin\hr3 = e9ea41198bac25196a2e9cf8e66a94a64e294206823f70284e385be35eaaf7092e3592fa2a35fb9d1cd511cbe9a2486a156ca6a8d5abfa2c9bbb76212928b5c64688dcff	AA_v3.5.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	AA_v3.5.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy\Admin	AA_v3.5.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE	AA_v3.5.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Ammyy	AA_v3.5.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Ammyy\Admin	AA_v3.5.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
4728	AA_v3.5.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
4728	AA_v3.5.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4372 wrote to memory of 4728	4372	AA_v3.5.exe	85
PID 4372 wrote to memory of 4728	4372	AA_v3.5.exe	85
PID 4372 wrote to memory of 4728	4372	AA_v3.5.exe	85

C:\Users\Admin\AppData\Local\Temp\AA_v3.5.exe
"C:\Users\Admin\AppData\Local\Temp\AA_v3.5.exe"
1⤵
PID:216

C:\Users\Admin\AppData\Local\Temp\AA_v3.5.exe
"C:\Users\Admin\AppData\Local\Temp\AA_v3.5.exe" -service -lunch
1⤵
- Suspicious use of WriteProcessMemory
PID:4372
- C:\Users\Admin\AppData\Local\Temp\AA_v3.5.exe
  "C:\Users\Admin\AppData\Local\Temp\AA_v3.5.exe"
  2⤵
  - Drops file in System32 directory
  - Modifies data under HKEY_USERS
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  PID:4728

C:\ProgramData\AMMYY\hr

Filesize
22B

MD5
a314918806c4ea6a15db57a7e8c87c57

SHA1
217ac00fb0dd437fca9d8b07382e15ba2b4ec2e8

SHA256
5595858b3b2c3361df005847b9914e1e9aa70ea6985a8a652afe6631979e8b43

SHA512
eacedfa30bf9e38af28e973468bc75c6cc9f0b3f63d7ab0502b3091efe7cd2b0b095a2b0d82263d4f20648fa1442ab7a7dc17070bea11943e83cedd4e2ead1fb

Download Submit
C:\ProgramData\AMMYY\hr3

Filesize
68B

MD5
151b6a27977f32e17c876754c65f640b

SHA1
be8c0c9eecb123109eadaaafd0305d0ea87dcd78

SHA256
b9e4393d2d89a6620066cde38a8bca617765e2b50258484386987737708f9701

SHA512
a1fd7783793bddf3dbc15ba76eea70835485e512b9fbdf39622f28319277a5986419bfc6a424d395363b591949e3fcf636d42043c6aab1d278a683b9635a3574

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

Filesize
271B

MD5
714f2508d4227f74b6adacfef73815d8

SHA1
a35c8a796e4453c0c09d011284b806d25bdad04c

SHA256
a5579945f23747541c0e80b79e79375d4ca44feafcd425ee9bd9302e35312480

SHA512
1171a6eac6d237053815a40c2bcc2df9f4209902d6157777377228f3b618cad50c88a9519444ed5c447cf744e4655272fb42dabb567df85b4b19b1a2f1d086d8

Download Submit