flawedammyy | 43bba98a64dd96cf0571f3d6dceafdc549cc3767a1beab6fe4a6e1fd3ddd3153

Analysis

max time kernel
150s
max time network
135s
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 11:03

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
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\hr3 = 13b9fe297ee7742afd3df5c0507b20a41ddf01f9fe4a9b3da5c1f0be5f4f88ba5323bfbeb241b4b356c2035d9461671b3e597d5312fa8e853c67bb2462a5fb9f80958906	AA_v3.5.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Ammyy\Admin\hr = 537d56736608796d5b5b4e155253b282a19078e5b16b	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
4756	AA_v3.5.exe

Suspicious use of SendNotifyMessage 1 IoCs

Processes:

AA_v3.5.exe

pid	Process
4756	AA_v3.5.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

AA_v3.5.exe

description	pid	Process	procid_target
PID 4604 wrote to memory of 4756	4604	AA_v3.5.exe	85
PID 4604 wrote to memory of 4756	4604	AA_v3.5.exe	85
PID 4604 wrote to memory of 4756	4604	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:4964

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:4604
- 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:4756

C:\ProgramData\AMMYY\hr

Filesize
22B

MD5
3ee71009a20f4c295bcfea95c533207e

SHA1
6aef47c3d9a55675a863cf58c013b9761ac6abd4

SHA256
cb85a2e626e0eb4a144ef74554c0eda7e13ae7819d7ca5fae7eae8b8364ebf3e

SHA512
f4c2044ba3928edb46ec7eefef06c8e86a4cc6a18027438ece074ec302522e530574c81b21dced806efb510b20e094b5e720ee8ca521a7bdc9586165498e8750

Download Submit
C:\ProgramData\AMMYY\hr3

Filesize
68B

MD5
265460a57fc6326c6e38e7f15c70eff5

SHA1
af5fbd3b1119a23d9f0647b73fc522e15bbcce11

SHA256
0b83dacb42a3ca0290bc10bc993434837d141afd347ee0a82222964c10cd64ec

SHA512
1fbf4fadc6872164634cbf6c66f6de0f24ebf698ad1e22af7d1d1fa53c4cc9d4135b6291bdf5c8135f5e3e49f28243e164c3a7d77084e17465c8a63617c31726

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

Filesize
271B

MD5
714f2508d4227f74b6adacfef73815d8

SHA1
a35c8a796e4453c0c09d011284b806d25bdad04c

SHA256
a5579945f23747541c0e80b79e79375d4ca44feafcd425ee9bd9302e35312480

SHA512
1171a6eac6d237053815a40c2bcc2df9f4209902d6157777377228f3b618cad50c88a9519444ed5c447cf744e4655272fb42dabb567df85b4b19b1a2f1d086d8

Download Submit