flawedammyy | a396d3f96540a75df6cc663945667551822d6f33259f87dc6b4a369cfa858649

Analysis

max time kernel
150s
max time network
142s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
25-05-2024 10:05

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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 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-1-5-21-2297530677-1229052932-2803917579-1000\Control Panel\International\Geo\Nation	UzakYardim.exe

Modifies data under HKEY_USERS 6 IoCs

description	ioc	Process
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
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy\Admin\hr = 537d56736608796e5f5e4c105953a78fb21bc3f1b26b	UzakYardim.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy\Admin\hr3 = cae9586d4ba7c7430357c41ab4de2c15c8f3ea7429d02099c8095f4bbf98cbb93ef8323679d38a6678a77cf62ef2fc366a6b85820e40da68131ec51d4ad1b4e0cfe71dba	UzakYardim.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
280	UzakYardim.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
280	UzakYardim.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2956 wrote to memory of 280	2956	UzakYardim.exe	29
PID 2956 wrote to memory of 280	2956	UzakYardim.exe	29
PID 2956 wrote to memory of 280	2956	UzakYardim.exe	29
PID 2956 wrote to memory of 280	2956	UzakYardim.exe	29

C:\Users\Admin\AppData\Local\Temp\dll\UzakYardim.exe
"C:\Users\Admin\AppData\Local\Temp\dll\UzakYardim.exe"
1⤵
PID:2944

C:\Users\Admin\AppData\Local\Temp\dll\UzakYardim.exe
"C:\Users\Admin\AppData\Local\Temp\dll\UzakYardim.exe" -service -lunch
1⤵
- Suspicious use of WriteProcessMemory
PID:2956
- C:\Users\Admin\AppData\Local\Temp\dll\UzakYardim.exe
  "C:\Users\Admin\AppData\Local\Temp\dll\UzakYardim.exe"
  2⤵
  - Checks computer location settings
  - Modifies data under HKEY_USERS
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  PID:280

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\hr

Filesize
22B

MD5
9ffc002d432dbdb60671b1674a318f7f

SHA1
86203b1f0e583421179e847177346a98ea7892f7

SHA256
bbadbebe91946eb669d4f54c8db0d4362b3f244b37a127ab078f37d5446c0054

SHA512
b80b8ac519ea2232f5c35a803ed106979416d5911de77acbc7d90f120aa786946a97251f38e620d36844985bd529d03800697dba0f5ba295cddfc1f81f7bf284

Download Submit
C:\ProgramData\AMMYY\hr3

Filesize
68B

MD5
2a0337fc8eb315be10a79af6f9929fd7

SHA1
acdddbce15dfc133715c3204b50b0945d1f9305d

SHA256
6a41c17ac3c57fb6c4677c73ba1663975291037d55405c77a82e382828f7c6b8

SHA512
300cb37678c87c90adfe427e1ec05ff7978db5e553cc61b009d3f9b2ae3b7f6395229e46659abd801414181c02383172948a5ff680cdfb5c3f4e5c93c6975fbd

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

Filesize
331B

MD5
c5b80443bc31f2f5c1d2e384c3b82961

SHA1
445a99fa06484d216276b9284eedf25483780216

SHA256
cc8225e7412000f34a92f118af842d585d575498f36fe772dedad9f88c1fe5ad

SHA512
eae9247b9a1abbf8822ce65dbfd2db9b59a57367c7885614b89b8608688753e0c71fc8c955eb1493ef4dd7ba952760ff3476e05d9c177fb40661765a9e408d97

Download Submit