flawedammyy | a8aac2ccbe416c9776fbac687a2d210376582c7e58b306d3a0fdb25573119d7d

Analysis

max time kernel
151s
max time network
147s
platform
windows7_x64
resource
win7-20230220-en
resource tags

arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
submitted
23/03/2023, 10:19

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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-1-5-21-1283023626-844874658-3193756055-1000\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\Ammyy	AA_v3.5.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy\Admin\hr = 537d56736608796e5f5e4c105953575b956e3102b16b	AA_v3.5.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy\Admin\hr3 = a3b1216fad1fc80ac4fd9bd80aff6888b4eade9ec54e62397f9323b7ca805adf4fb92e5c4f78a5d55b305cd11dc50c1779e5710faca50533c7c2753d68e91c13c4a6494a	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
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE	AA_v3.5.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
1740	AA_v3.5.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
1740	AA_v3.5.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1120 wrote to memory of 1740	1120	AA_v3.5.exe	29
PID 1120 wrote to memory of 1740	1120	AA_v3.5.exe	29
PID 1120 wrote to memory of 1740	1120	AA_v3.5.exe	29
PID 1120 wrote to memory of 1740	1120	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:1712

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:1120
- 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:1740

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

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Downloads

C:\ProgramData\AMMYY\hr

Filesize
22B

MD5
109f1fd857bdf1eebcf959f101edc85c

SHA1
057f706c522b7e14e83c9cc25018b0a4d28f764d

SHA256
0f3c0037d74015c6e2535549be252dc02332134ff45a199f64771720df1ed6d3

SHA512
182bc0a08f265e11be3533bc577da2434babd9c7b9800d40e9aa814f0b83df1f7f642324ff70b65b1b6a6af18d6a125e0788f082f4d44472ac3d668382870ed4

Download Submit
C:\ProgramData\AMMYY\hr3

Filesize
68B

MD5
71d1c6814500fc90dc392bb68a2342f4

SHA1
762eed9cfa8ea8e1f82b1f0eb63534372a4027b1

SHA256
79c4717e2bb8cd1fe50b84019eb9367d9f7cc85d8e45155ad2fdba600d65264f

SHA512
0dd0fba0ce2bbf5936447c5e3b0df8f8f864ce9ad27577bfc965068e3f25387f6620f50337c2158bea02780fe928d4cab4eb554421b86cd2b7180d89ebecb23f

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

Filesize
271B

MD5
714f2508d4227f74b6adacfef73815d8

SHA1
a35c8a796e4453c0c09d011284b806d25bdad04c

SHA256
a5579945f23747541c0e80b79e79375d4ca44feafcd425ee9bd9302e35312480

SHA512
1171a6eac6d237053815a40c2bcc2df9f4209902d6157777377228f3b618cad50c88a9519444ed5c447cf744e4655272fb42dabb567df85b4b19b1a2f1d086d8

Download Submit