flawedammyy | 65d4e85c117014155b266f2785d05bac7530bfd3eff04d2804cc831e464962f6

Analysis

max time kernel
150s
max time network
144s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
26-08-2024 15:20

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General

Target

dll/UzakYardim.exe
Size

740KB
MD5

10a524d7ac94678ae286b065421647db
SHA1

b538e3f113817c8237419310ef47817d1d961fa9
SHA256

55daa062650d42e0feabc5ae1c3e4a7f68d4f8a3c69be375a0abc7bf3e1efad4
SHA512

928b0e712e604a5ba9580ff6ecadbdf77e2fda6847b11366ce929281ae8e5e3a633073ff07176989ddcb5f8387c6f7c061729af99b61a23a319ddeb7d63ace1b
SSDEEP

12288:pUYpJqMH2OwlaUPcWWw5XZV8f64RteVpN5ETMasTjmgvPi:ZpJJWOwlaUPcWWwRZb4Rt+N5WMasHDy

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

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-1-5-21-3450744190-3404161390-554719085-1000\Control Panel\International\Geo\Nation	UzakYardim.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	UzakYardim.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	UzakYardim.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	UzakYardim.exe

Modifies data under HKEY_USERS 6 IoCs

description	ioc	Process
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy\Admin\hr = 537d567366087c695f594c16545327d228a883a8b26b	UzakYardim.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy\Admin\hr3 = 33afa561877072c67d3b71518c9cd468b9cd58502b0ae0e6e6ad8fd3e10b15a5844e9c4cc3dcc8166a4f5a4a7994f562a4622ac0066acc8b2d2e722d36daa1c7ae23e3fd	UzakYardim.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	UzakYardim.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy\Admin	UzakYardim.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE	UzakYardim.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy	UzakYardim.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2948	UzakYardim.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
2948	UzakYardim.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2776 wrote to memory of 2948	2776	UzakYardim.exe	32
PID 2776 wrote to memory of 2948	2776	UzakYardim.exe	32
PID 2776 wrote to memory of 2948	2776	UzakYardim.exe	32
PID 2776 wrote to memory of 2948	2776	UzakYardim.exe	32

C:\Users\Admin\AppData\Local\Temp\dll\UzakYardim.exe
"C:\Users\Admin\AppData\Local\Temp\dll\UzakYardim.exe"
1⤵
- System Location Discovery: System Language Discovery
PID:2700

C:\Users\Admin\AppData\Local\Temp\dll\UzakYardim.exe
"C:\Users\Admin\AppData\Local\Temp\dll\UzakYardim.exe" -service -lunch
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2776
- C:\Users\Admin\AppData\Local\Temp\dll\UzakYardim.exe
  "C:\Users\Admin\AppData\Local\Temp\dll\UzakYardim.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:2948

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

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\ProgramData\AMMYY\hr

Filesize
22B

MD5
828f4e7549d15c71a04a57283757b0ab

SHA1
90a711a1574e24d8d2da2be59ce7f1dfa9cfb68f

SHA256
b8a5fd0a7daeb2abc987c910ebdb5250f571df02feec6bed73c99354c2ecfa0d

SHA512
40f45a3c374a6e141ef4d2ecd14d499e2fa8fb8774705e694865ce36aa7cb646768aa973f0fa2f14c94107bb7d07a27686bbb478e796cda6da795b2358f40e9b

Download Submit
C:\ProgramData\AMMYY\hr3

Filesize
68B

MD5
345dd8ab6468a64d99e1ab5d615c6a1d

SHA1
04b5029d7b6e3ac64e7db463179a2c798045ffb3

SHA256
d35ec422d46d5b5bec60992f758dd96bb5981d30322f62945eeab810a781bcab

SHA512
f19a1394c5cf2c5eceff1f88763e7e2f094bc587824911a5ab2dd719dad4de9682270476debaca9bdfc53a0b02b1d97ffbde63b792ceb9d15e0fe0dd06d4ae6a

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

Filesize
331B

MD5
c5b80443bc31f2f5c1d2e384c3b82961

SHA1
445a99fa06484d216276b9284eedf25483780216

SHA256
cc8225e7412000f34a92f118af842d585d575498f36fe772dedad9f88c1fe5ad

SHA512
eae9247b9a1abbf8822ce65dbfd2db9b59a57367c7885614b89b8608688753e0c71fc8c955eb1493ef4dd7ba952760ff3476e05d9c177fb40661765a9e408d97

Download Submit