flawedammyy | b5fba0e4fac247a8fc7f3e0d9dcdce0e982a3c1542e055193b7b74c4fbad51da

Analysis

max time kernel
22s
max time network
142s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
31-12-2023 01:38

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General

Target

6f2258383b92bfaf425f49fc7a5901bfa97a334de49ce015cf65396125c13d20.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

Processes:

6f2258383b92bfaf425f49fc7a5901bfa97a334de49ce015cf65396125c13d20.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3601492379-692465709-652514833-1000\Control Panel\International\Geo\Nation	6f2258383b92bfaf425f49fc7a5901bfa97a334de49ce015cf65396125c13d20.exe

Modifies data under HKEY_USERS 6 IoCs

Processes:

6f2258383b92bfaf425f49fc7a5901bfa97a334de49ce015cf65396125c13d20.exe

description	ioc	Process
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy\Admin\hr = 537d56736608796e5f5e4c10595347dbcf10c264b26b	6f2258383b92bfaf425f49fc7a5901bfa97a334de49ce015cf65396125c13d20.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy\Admin\hr3 = 0534dbb14f3a0c6db9ea7f545d25bd77c0f0112d28c594f8f1e6b1e79867edc50a84e9f15414123b3efcf4103308dfeb5d1741c81a2f27a779b0dc1eaeadabccbb9c0a36	6f2258383b92bfaf425f49fc7a5901bfa97a334de49ce015cf65396125c13d20.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	6f2258383b92bfaf425f49fc7a5901bfa97a334de49ce015cf65396125c13d20.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy\Admin	6f2258383b92bfaf425f49fc7a5901bfa97a334de49ce015cf65396125c13d20.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE	6f2258383b92bfaf425f49fc7a5901bfa97a334de49ce015cf65396125c13d20.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy	6f2258383b92bfaf425f49fc7a5901bfa97a334de49ce015cf65396125c13d20.exe

Suspicious use of FindShellTrayWindow 1 IoCs

Processes:

6f2258383b92bfaf425f49fc7a5901bfa97a334de49ce015cf65396125c13d20.exe

pid	Process
2520	6f2258383b92bfaf425f49fc7a5901bfa97a334de49ce015cf65396125c13d20.exe

Suspicious use of SendNotifyMessage 1 IoCs

Processes:

6f2258383b92bfaf425f49fc7a5901bfa97a334de49ce015cf65396125c13d20.exe

pid	Process
2520	6f2258383b92bfaf425f49fc7a5901bfa97a334de49ce015cf65396125c13d20.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

6f2258383b92bfaf425f49fc7a5901bfa97a334de49ce015cf65396125c13d20.exe

description	pid	Process	procid_target
PID 2032 wrote to memory of 2520	2032	6f2258383b92bfaf425f49fc7a5901bfa97a334de49ce015cf65396125c13d20.exe	15
PID 2032 wrote to memory of 2520	2032	6f2258383b92bfaf425f49fc7a5901bfa97a334de49ce015cf65396125c13d20.exe	15
PID 2032 wrote to memory of 2520	2032	6f2258383b92bfaf425f49fc7a5901bfa97a334de49ce015cf65396125c13d20.exe	15
PID 2032 wrote to memory of 2520	2032	6f2258383b92bfaf425f49fc7a5901bfa97a334de49ce015cf65396125c13d20.exe	15

C:\Users\Admin\AppData\Local\Temp\6f2258383b92bfaf425f49fc7a5901bfa97a334de49ce015cf65396125c13d20.exe
"C:\Users\Admin\AppData\Local\Temp\6f2258383b92bfaf425f49fc7a5901bfa97a334de49ce015cf65396125c13d20.exe"
1⤵
PID:2240

C:\Users\Admin\AppData\Local\Temp\6f2258383b92bfaf425f49fc7a5901bfa97a334de49ce015cf65396125c13d20.exe
"C:\Users\Admin\AppData\Local\Temp\6f2258383b92bfaf425f49fc7a5901bfa97a334de49ce015cf65396125c13d20.exe"
1⤵
- Checks computer location settings
- Modifies data under HKEY_USERS
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:2520

C:\Users\Admin\AppData\Local\Temp\6f2258383b92bfaf425f49fc7a5901bfa97a334de49ce015cf65396125c13d20.exe
"C:\Users\Admin\AppData\Local\Temp\6f2258383b92bfaf425f49fc7a5901bfa97a334de49ce015cf65396125c13d20.exe" -service -lunch
1⤵
- Suspicious use of WriteProcessMemory
PID:2032

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

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

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Downloads

C:\ProgramData\AMMYY\settings3.bin

Filesize
271B

MD5
714f2508d4227f74b6adacfef73815d8

SHA1
a35c8a796e4453c0c09d011284b806d25bdad04c

SHA256
a5579945f23747541c0e80b79e79375d4ca44feafcd425ee9bd9302e35312480

SHA512
1171a6eac6d237053815a40c2bcc2df9f4209902d6157777377228f3b618cad50c88a9519444ed5c447cf744e4655272fb42dabb567df85b4b19b1a2f1d086d8

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