flawedammyy | 54f47b3d009102576c0c59abffca99c2ecd890a2f0c7399e8df5f1af48206d94

Analysis

max time kernel
150s
max time network
131s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
11-05-2024 11:11

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

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

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE	AA_v3.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Ammyy	AA_v3.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Ammyy\Admin\hr = 537d567366087c69585c401452531033d6c9dbfcb26b	AA_v3.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Ammyy\Admin\hr3 = 1fb04f160bfa513a205a73b70fff1e7e0176cb32dae94c5d82d820ff7bf1a2b1c1b5278dacb4adfe5178a858fd8baddfff5461597058fb4a7d77344fdbc44ce901f449e6	AA_v3.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	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\Ammyy\Admin	AA_v3.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
3508	AA_v3.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
3508	AA_v3.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1044 wrote to memory of 3508	1044	AA_v3.exe	90
PID 1044 wrote to memory of 3508	1044	AA_v3.exe	90
PID 1044 wrote to memory of 3508	1044	AA_v3.exe	90

C:\Users\Admin\AppData\Local\Temp\AA_v3.exe
"C:\Users\Admin\AppData\Local\Temp\AA_v3.exe"
1⤵
PID:1384

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:1044
- 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:3508

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --field-trial-handle=4232,i,13879737908471496610,15335851594401413307,262144 --variations-seed-version --mojo-platform-channel-handle=4316 /prefetch:8
1⤵
PID:2224

C:\ProgramData\AMMYY\hr

Filesize
22B

MD5
d86fd7fd528d320780225845f7540c74

SHA1
62b36bfda457eba22f09bee7dec56fcf597a99e5

SHA256
96237a11a7667e203882c63980be023cd46ab3610a65874f10831c715b514ff0

SHA512
2fe022e5fd11d0cdee27a2983b803b3721a4989306dc5ef8a7d0778d80880fbcb46378b71fdf3c6e2cd5cb9b4ba4573084c7eba37d9cbb95979f2cf9503ba208

Download Submit
C:\ProgramData\AMMYY\hr3

Filesize
68B

MD5
5ccbdd92f7287b32d3baea9035b40eb5

SHA1
7f19d6989f4177df105a5f6ce0928047458745af

SHA256
9678d81f55b94e36c5d7b14102ba7f078390a282cf2b9a4fb94f0496dc0f95ea

SHA512
c0db44bc27c239a4d4850c90ff03a1617d7bc859bba54f777e02a66ab3393ae3be90f3296c579010a468bf5c275cd291c65a9c46f8cd6d55c4606630d026ea8d

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

Filesize
271B

MD5
714f2508d4227f74b6adacfef73815d8

SHA1
a35c8a796e4453c0c09d011284b806d25bdad04c

SHA256
a5579945f23747541c0e80b79e79375d4ca44feafcd425ee9bd9302e35312480

SHA512
1171a6eac6d237053815a40c2bcc2df9f4209902d6157777377228f3b618cad50c88a9519444ed5c447cf744e4655272fb42dabb567df85b4b19b1a2f1d086d8

Download Submit