flawedammyy | a8aac2ccbe416c9776fbac687a2d210376582c7e58b306d3a0fdb25573119d7d

Analysis

max time kernel
150s
max time network
146s
platform
windows7_x64
resource
win7-20230220-en
resource tags

arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
submitted
23-03-2023 09:04

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

Device/HarddiskVolume3/Aammyy Admin/AA_v3.5.exe
Size

746KB
MD5

f8cd52b70a11a1fb3f29c6f89ff971ec
SHA1

6a0c46818a6a10c2c5a98a0cce65fbaf95caa344
SHA256

6f2258383b92bfaf425f49fc7a5901bfa97a334de49ce015cf65396125c13d20
SHA512

987b6b288a454b6198d4e7f94b7bba67cafe37f9654cd3cd72134a85958efd2125596ae48e66a8ee49ee3f4199dac7f136e1831f2bf4015f25d2980f0b866abe
SSDEEP

12288:PUYpJqMH2OwlaUPcWWw5XZV8f64RteVpN5ETMasTjcP6gX:zpJJWOwlaUPcWWwRZb4Rt+N5WMasHoX

Score

10^/10

flawedammyy trojan

Malware Config

Signatures

FlawedAmmyy RAT
Remote-access trojan based on leaked code for the Ammyy remote admin software.
trojan flawedammyy

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000\Control Panel\International\Geo\Nation	AA_v3.5.exe

Modifies data under HKEY_USERS 6 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE	AA_v3.5.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy	AA_v3.5.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy\Admin\hr = 537d56736608796e5f5e4c105953473cb5d92602b16b	AA_v3.5.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy\Admin\hr3 = 0532a5a590e676b88d30b90d4ab2ff9575950c3cb67096bf0c672b8900fa6ea0e2dde0ad1dee6985b46d0b550f81c065d0b01002eb2aef278dd56f3c56d68816e5276ded	AA_v3.5.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	AA_v3.5.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy\Admin	AA_v3.5.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
1312	AA_v3.5.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
1312	AA_v3.5.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1524 wrote to memory of 1312	1524	AA_v3.5.exe	29
PID 1524 wrote to memory of 1312	1524	AA_v3.5.exe	29
PID 1524 wrote to memory of 1312	1524	AA_v3.5.exe	29
PID 1524 wrote to memory of 1312	1524	AA_v3.5.exe	29

C:\Users\Admin\AppData\Local\Temp\Device\HarddiskVolume3\Aammyy Admin\AA_v3.5.exe
"C:\Users\Admin\AppData\Local\Temp\Device\HarddiskVolume3\Aammyy Admin\AA_v3.5.exe"
1⤵
PID:1728

C:\Users\Admin\AppData\Local\Temp\Device\HarddiskVolume3\Aammyy Admin\AA_v3.5.exe
"C:\Users\Admin\AppData\Local\Temp\Device\HarddiskVolume3\Aammyy Admin\AA_v3.5.exe" -service -lunch
1⤵
- Suspicious use of WriteProcessMemory
PID:1524
- C:\Users\Admin\AppData\Local\Temp\Device\HarddiskVolume3\Aammyy Admin\AA_v3.5.exe
  "C:\Users\Admin\AppData\Local\Temp\Device\HarddiskVolume3\Aammyy Admin\AA_v3.5.exe"
  2⤵
  - Checks computer location settings
  - Modifies data under HKEY_USERS
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  PID:1312

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\ProgramData\AMMYY\hr

Filesize
22B

MD5
561634a0e15ca7f594ff93673dccb9c3

SHA1
e84383b56f693d0f77a02123671f880fbd7ddb2b

SHA256
895c5818a043d294efc55b338d03795ef63927dfdd0b31d708cb33732304eefa

SHA512
1350a8a92c5fc2624d28b818664c7fba0a609dc7b70ce30042ab12bc2b415dad6853451cfd3d4309f589712d9db9a5567c43bad671c07d1e10aa26300442a529

Download Submit
C:\ProgramData\AMMYY\hr3

Filesize
68B

MD5
796cd74727cd0de2e21f85e98d201eac

SHA1
df68cb1d0a7da79af7272da3ab9bc945f9dc2ef8

SHA256
8f712df80070e8c182d84548809f771b20c57df9b3558f05a9692be901bdee8d

SHA512
19ab99dd39977d6e2b468d58c9f830cf1b8640c07caca43fead611157b3ca75d42a3a1773ce1d88714ed701812802351a786c0caca547ee8d05bea5480aefcde

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

Filesize
271B

MD5
714f2508d4227f74b6adacfef73815d8

SHA1
a35c8a796e4453c0c09d011284b806d25bdad04c

SHA256
a5579945f23747541c0e80b79e79375d4ca44feafcd425ee9bd9302e35312480

SHA512
1171a6eac6d237053815a40c2bcc2df9f4209902d6157777377228f3b618cad50c88a9519444ed5c447cf744e4655272fb42dabb567df85b4b19b1a2f1d086d8

Download Submit