flawedammyy | 6f2258383b92bfaf425f49fc7a5901bfa97a334de49ce015cf65396125c13d20

General

Target

6f2258383b92bfaf425f49fc7a5901bfa97a334de49ce015cf65396125c13d20.exe
Size

746KB
MD5

f8cd52b70a11a1fb3f29c6f89ff971ec
SHA1

6a0c46818a6a10c2c5a98a0cce65fbaf95caa344
SHA256

6f2258383b92bfaf425f49fc7a5901bfa97a334de49ce015cf65396125c13d20
SHA512

987b6b288a454b6198d4e7f94b7bba67cafe37f9654cd3cd72134a85958efd2125596ae48e66a8ee49ee3f4199dac7f136e1831f2bf4015f25d2980f0b866abe
SSDEEP

12288:PUYpJqMH2OwlaUPcWWw5XZV8f64RteVpN5ETMasTjcP6gX:zpJJWOwlaUPcWWwRZb4Rt+N5WMasHoX

Score

10^/10

flawedammyy discovery trojan

Malware Config

Signatures

FlawedAmmyy RAT
Remote-access trojan based on leaked code for the Ammyy remote admin software.
trojan flawedammyy
Flawedammyy family
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-1-5-21-312935884-697965778-3955649944-1000\Control Panel\International\Geo\Nation	6f2258383b92bfaf425f49fc7a5901bfa97a334de49ce015cf65396125c13d20.exe

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	6f2258383b92bfaf425f49fc7a5901bfa97a334de49ce015cf65396125c13d20.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	6f2258383b92bfaf425f49fc7a5901bfa97a334de49ce015cf65396125c13d20.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	6f2258383b92bfaf425f49fc7a5901bfa97a334de49ce015cf65396125c13d20.exe

Modifies data under HKEY_USERS 6 IoCs

description	ioc	Process
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy\Admin\hr = 537d567366087c6658524c1752536724ed09f71fb36b	6f2258383b92bfaf425f49fc7a5901bfa97a334de49ce015cf65396125c13d20.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy\Admin\hr3 = 340b4de3b348c3034c90cc06956b44fdb7119895a75d7f134a82f569c155d8016d8f9873c23fb78f130f2c274471ec007c0667e871b9f8d70ad16859577fa729682d82f528816788080eee	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

pid	Process
2872	6f2258383b92bfaf425f49fc7a5901bfa97a334de49ce015cf65396125c13d20.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
2872	6f2258383b92bfaf425f49fc7a5901bfa97a334de49ce015cf65396125c13d20.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2848 wrote to memory of 2872	2848	6f2258383b92bfaf425f49fc7a5901bfa97a334de49ce015cf65396125c13d20.exe	32
PID 2848 wrote to memory of 2872	2848	6f2258383b92bfaf425f49fc7a5901bfa97a334de49ce015cf65396125c13d20.exe	32
PID 2848 wrote to memory of 2872	2848	6f2258383b92bfaf425f49fc7a5901bfa97a334de49ce015cf65396125c13d20.exe	32
PID 2848 wrote to memory of 2872	2848	6f2258383b92bfaf425f49fc7a5901bfa97a334de49ce015cf65396125c13d20.exe	32

C:\Users\Admin\AppData\Local\Temp\6f2258383b92bfaf425f49fc7a5901bfa97a334de49ce015cf65396125c13d20.exe
"C:\Users\Admin\AppData\Local\Temp\6f2258383b92bfaf425f49fc7a5901bfa97a334de49ce015cf65396125c13d20.exe"
1⤵
- System Location Discovery: System Language Discovery
PID:2708

C:\Users\Admin\AppData\Local\Temp\6f2258383b92bfaf425f49fc7a5901bfa97a334de49ce015cf65396125c13d20.exe
"C:\Users\Admin\AppData\Local\Temp\6f2258383b92bfaf425f49fc7a5901bfa97a334de49ce015cf65396125c13d20.exe" -service -lunch
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2848
- C:\Users\Admin\AppData\Local\Temp\6f2258383b92bfaf425f49fc7a5901bfa97a334de49ce015cf65396125c13d20.exe
  "C:\Users\Admin\AppData\Local\Temp\6f2258383b92bfaf425f49fc7a5901bfa97a334de49ce015cf65396125c13d20.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Modifies data under HKEY_USERS
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  PID:2872

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\ProgramData\AMMYY\hr

Filesize
22B

MD5
192a3c7bba65d245e8fea0cfb81bcaad

SHA1
1693465ee4965b376dc43234ff269a740ddd16a9

SHA256
f1284392c076d7190fc67b0bca65d563a2f307f0c7ee7b233091765d86f6068e

SHA512
22a2f2d1bcd950e43a46d993215792d0c422e42ddbd7d43ca13ed5b9499442a06a7a015be401e9105ad411591e9f81fc5ecf0c8647d5730bf06ed2c0d728e4e2

Download Submit
C:\ProgramData\AMMYY\hr3

Filesize
75B

MD5
74b9c8554fd0926b7c4db1440aec74f1

SHA1
6ca3dc9293d2fb5e9258ed1daba5516cd9f59433

SHA256
09a6a0e00772a7b08faaf7f60c86b4efcf7513c02da7aa1bf4f86a45d34685e9

SHA512
3c5231b7ce46f235e8ae1ac3751e264a0defd0b58d3aad78d0ccf4f448bdb51f0f76d11ef2c3cf66980492de190b0d00669a92cebc228e847d521a8ba1385553

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

Filesize
271B

MD5
714f2508d4227f74b6adacfef73815d8

SHA1
a35c8a796e4453c0c09d011284b806d25bdad04c

SHA256
a5579945f23747541c0e80b79e79375d4ca44feafcd425ee9bd9302e35312480

SHA512
1171a6eac6d237053815a40c2bcc2df9f4209902d6157777377228f3b618cad50c88a9519444ed5c447cf744e4655272fb42dabb567df85b4b19b1a2f1d086d8

Download Submit

Analysis

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