flawedammyy | 43bba98a64dd96cf0571f3d6dceafdc549cc3767a1beab6fe4a6e1fd3ddd3153

Analysis

max time kernel
151s
max time network
140s
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 11:56

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\History\History.IE5	AA_v3.5.exe
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

Modifies data under HKEY_USERS 9 IoCs

Processes:

AA_v3.5.exe

description	ioc	Process
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
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE	AA_v3.5.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Ammyy\Admin\hr = 537d56736608796d5b5b4e1552533ffc3da671e5b16b	AA_v3.5.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Ammyy\Admin\hr3 = 9d4a036bee51818827c9418cf8051ad918a83cbbc22987f9d9a71532bdb2dfe5e65df56b08ba2390d774e4f00709377164979246ab6ea07d5128f41c2c370b742429951c	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\Ammyy\Admin	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

Processes:

AA_v3.5.exe

pid	Process
412	AA_v3.5.exe

Suspicious use of SendNotifyMessage 1 IoCs

Processes:

AA_v3.5.exe

pid	Process
412	AA_v3.5.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

AA_v3.5.exe

description	pid	Process	procid_target
PID 3744 wrote to memory of 412	3744	AA_v3.5.exe	85
PID 3744 wrote to memory of 412	3744	AA_v3.5.exe	85
PID 3744 wrote to memory of 412	3744	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:4000

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:3744
- 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:412

C:\ProgramData\AMMYY\hr

Filesize
22B

MD5
519b38a4b88470e34fcf8f49592ca2f9

SHA1
8347e80ded31b47f137b9854d382944d923997d7

SHA256
9c74dd16711bc227600d1fe4a64ba279cabe259cc5b0725293a7a4a31ca7716e

SHA512
d5f804da343d65bf4a6c1e3b01d6703fca1eceb31355fd6f44bb756c00c926a2b99217490cc4a86b378e317e4d023e65f9d8af7ec2fa4c92d27612dc95325c09

Download Submit
C:\ProgramData\AMMYY\hr3

Filesize
68B

MD5
d103554cd2fea5d30337a384c6699248

SHA1
c90a7c34e4fccf7025f3dc4255ed53d690501372

SHA256
5f9ae68352ccd81deb4e3c0965918d822c7dc98cc579e556fbe418fdd8b1ce4f

SHA512
a283cc7605d83dbba8d567b91e6adbd6c147c59286194a799aea4ee441cdb7dc31ee543966971bec4c4a97b8a71f387ec57c7c8d4921b898c57bb2cd5a552e18

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

Filesize
271B

MD5
714f2508d4227f74b6adacfef73815d8

SHA1
a35c8a796e4453c0c09d011284b806d25bdad04c

SHA256
a5579945f23747541c0e80b79e79375d4ca44feafcd425ee9bd9302e35312480

SHA512
1171a6eac6d237053815a40c2bcc2df9f4209902d6157777377228f3b618cad50c88a9519444ed5c447cf744e4655272fb42dabb567df85b4b19b1a2f1d086d8

Download Submit