flawedammyy | 43bba98a64dd96cf0571f3d6dceafdc549cc3767a1beab6fe4a6e1fd3ddd3153

Analysis

max time kernel
161s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20230703-en
resource tags

arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system
submitted
19-07-2023 11:34

Target

AA_v3.5.exe
Size

751KB
MD5

5686a7032e37087f0fd082a04f727aad
SHA1

341fee5256dcc259a3a566ca8f0260eb1e60d730
SHA256

43bba98a64dd96cf0571f3d6dceafdc549cc3767a1beab6fe4a6e1fd3ddd3153
SHA512

0ebd95b20ef54d047fdaec37cfb10e2c39ea9d63fa28d6a6848ec11b34a4c4ec5f7a8a430d81670461203b9e675ac4a32cac3da4a1c471f16e8d003c6dea3345
SSDEEP

12288:oPO1fNZApVuCN7e/yalnM4RtjLDXcbOAS3snvVgbgJ:om1fN6pkCNa/yaq4RtjXcu3sSEJ

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_v3.5.exe

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

Processes:

AA_v3.5.exe

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\Software\Ammyy	AA_v3.5.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	AA_v3.5.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE	AA_v3.5.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy\Admin	AA_v3.5.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Ammyy\Admin	AA_v3.5.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Ammyy\Admin\hr = 537d56736608796d5b5b4e155253c401a47f71e5b16b	AA_v3.5.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Ammyy\Admin\hr3 = 269e0e918c3b109fd70d50b0be1a228f277d000e9e3724c7164ba123f1df6587c49352cc6143274ed2398dd0907d423da31d07a484d1d9a2ba3de66f74197d3563c7cede	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 (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	AA_v3.5.exe

Suspicious use of FindShellTrayWindow 1 IoCs

Processes:

AA_v3.5.exe

pid	Process
3052	AA_v3.5.exe

Suspicious use of SendNotifyMessage 1 IoCs

Processes:

AA_v3.5.exe

pid	Process
3052	AA_v3.5.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

AA_v3.5.exe

description	pid	Process	procid_target
PID 5044 wrote to memory of 3052	5044	AA_v3.5.exe	87
PID 5044 wrote to memory of 3052	5044	AA_v3.5.exe	87
PID 5044 wrote to memory of 3052	5044	AA_v3.5.exe	87

C:\Users\Admin\AppData\Local\Temp\AA_v3.5.exe
"C:\Users\Admin\AppData\Local\Temp\AA_v3.5.exe"
1⤵
PID:2992

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:5044
- 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:3052

C:\ProgramData\AMMYY\hr

Filesize
22B

MD5
19d09e57ae9feb3720d437863fcac77b

SHA1
4c0d85202b3125829330984fa593695bf56dba45

SHA256
bc8847eee2e67016093c3555e81c07692a0f62369e93a0d2f8f76565cf7a2ea8

SHA512
d90d61a284cdda8f78335447abdddeb463aea38009e62344cdbac083610351e8b17a95b519006bb8c94d963a15dd2d9d7196a99af468dcc94a45cd4dd9102f3c

Download Submit
C:\ProgramData\AMMYY\hr3

Filesize
68B

MD5
40b5b416698fb654f9b6db67ceb53045

SHA1
f443e71691886bef7e4c33cf7d386255bb9cc2f5

SHA256
692fd41a01ca04d5128c9602084b3540e0a9b4a35ac9cc8f08a8c3088370a161

SHA512
946b9e9b8ddec08c511fccdf9a121e9631c749eb769ec8397365a918f549dd636c5585c436d0424fff7253e8910204a3cf03baaace8b82b36fb04463f31eeb3d

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

Filesize
271B

MD5
714f2508d4227f74b6adacfef73815d8

SHA1
a35c8a796e4453c0c09d011284b806d25bdad04c

SHA256
a5579945f23747541c0e80b79e79375d4ca44feafcd425ee9bd9302e35312480

SHA512
1171a6eac6d237053815a40c2bcc2df9f4209902d6157777377228f3b618cad50c88a9519444ed5c447cf744e4655272fb42dabb567df85b4b19b1a2f1d086d8

Download Submit