flawedammyy | a27e7ed5147c810b8b8d4a2f1cb106340db602f000a4f5e383b046af8a281f19

Analysis

max time kernel
10s
max time network
84s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
05-01-2024 07:21

Target

AA_v3.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_v3.exe

description	ioc	process
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5	AA_v3.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE	AA_v3.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies	AA_v3.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5	AA_v3.exe

Modifies data under HKEY_USERS 9 IoCs

Processes:

AA_v3.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	AA_v3.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Ammyy\Admin	AA_v3.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Ammyy\Admin\hr = 537d56736608796d5b5b4e155253a6332c6de160b26b	AA_v3.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Ammyy\Admin\hr3 = b59d2b42074ad24f8fe71eae591d8eb598e51a2d28c594f8f1e6b1e79867edc50a84e9f15414123b3efcf4103308dfeb5d1727b9b3c7e7267b4d8a0be3bbddc33a11e0a5	AA_v3.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	AA_v3.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	AA_v3.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy\Admin	AA_v3.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE	AA_v3.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Ammyy	AA_v3.exe

Suspicious use of FindShellTrayWindow 1 IoCs

Processes:

AA_v3.exe

pid process

4696 AA_v3.exe
Suspicious use of SendNotifyMessage 1 IoCs

Processes:

AA_v3.exe

pid process

4696 AA_v3.exe

pid	process
4696	AA_v3.exe

pid	process
4696	AA_v3.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

AA_v3.exe

description	pid	process	target process
PID 3660 wrote to memory of 4696	3660	AA_v3.exe	AA_v3.exe
PID 3660 wrote to memory of 4696	3660	AA_v3.exe	AA_v3.exe
PID 3660 wrote to memory of 4696	3660	AA_v3.exe	AA_v3.exe

C:\Users\Admin\AppData\Local\Temp\AA_v3.exe
"C:\Users\Admin\AppData\Local\Temp\AA_v3.exe"
1⤵
PID:4812

C:\Users\Admin\AppData\Local\Temp\AA_v3.exe
"C:\Users\Admin\AppData\Local\Temp\AA_v3.exe" -service -lunch
1⤵
- Suspicious use of WriteProcessMemory
PID:3660
- C:\Users\Admin\AppData\Local\Temp\AA_v3.exe
  "C:\Users\Admin\AppData\Local\Temp\AA_v3.exe"
  2⤵
  - Drops file in System32 directory
  - Modifies data under HKEY_USERS
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  PID:4696

C:\ProgramData\AMMYY\hr

Filesize
22B

MD5
8c138817d56f2158a930b4d1317a5e2b

SHA1
d24f12079ae2e41a56b707024d9d5de70093fdd8

SHA256
710b3369c0737cc720da2815b5197b8d1b2d810281c98a45db1c8cd044488442

SHA512
e79573195010d030f96f5cb1bfbd027351bb4c2bbc77643ff82d5cdf836ff5901065262a829ae15276513b2f4789ed4b0fc7f5fa55097841a612382e46303f6b

Download Submit
C:\ProgramData\AMMYY\hr3

Filesize
68B

MD5
bd3e7f25b0cf0884014638a6dc456eb6

SHA1
a0b5278d742d548c6944ecd361eacacc73c9e0c9

SHA256
408543ef43c8634df8940b3df23e8c12a6542d6b4482c80be5e4174d94842d00

SHA512
0a73c49461b0a447686c8759ba1b5493e3ccbc5f794820fd6a05e68db26855d936ae70d3b5438299cc5c87f36f6ad27dde200f4a387d5ad1aff57b6e53d8a567

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

Filesize
271B

MD5
714f2508d4227f74b6adacfef73815d8

SHA1
a35c8a796e4453c0c09d011284b806d25bdad04c

SHA256
a5579945f23747541c0e80b79e79375d4ca44feafcd425ee9bd9302e35312480

SHA512
1171a6eac6d237053815a40c2bcc2df9f4209902d6157777377228f3b618cad50c88a9519444ed5c447cf744e4655272fb42dabb567df85b4b19b1a2f1d086d8

Download Submit