flawedammyy | d0c08693a433c8a56813313ee2eb147c74ab8da375713f54412ddc4cf6619dd2

Analysis

max time kernel
150s
max time network
141s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
24-05-2024 13:05

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General

Target

AA_v3.5.exe
Size

746KB
MD5

2cbf5657ffd8858a9597f296a60270c2
SHA1

b130611c92788337c4f6bb9e9454ff06eb409166
SHA256

9b3f4d6a9bae4d7f9cfe45e706db8fe4baef51ae12353941e8b1532b231e6eac
SHA512

06339a299c8c9ce55e9b96582e54e0bf9e04f894ceb47c07486adf8b0140c2a01fd0932207aca8112ee0b16ba8711fee9435e37339aafb94f167b5a736ee7d0b
SSDEEP

12288:6NgEvTkYGzXUMA7PTgM0YOg26y4RtcxcUwhqb3omaY80NP6gL:6XTszE7PTgM0YOgA4RtcbwhsSYFVL

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:

AA_v3.5.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000\Control Panel\International\Geo\Nation	AA_v3.5.exe

Modifies data under HKEY_USERS 6 IoCs

Processes:

AA_v3.5.exe

description	ioc	process
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy\Admin\hr3 = 4d55e2fcdecbdd17c87c445dcc1b8185d6b3c8cc6a3ccb03eff13d570592004e8719d5d018591c4a15e23013e75c99a04bc502114a1f8d394eda4be233ca423138c7a740	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
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy	AA_v3.5.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy\Admin\hr = 537d56736608796e5f5e4c105953977d4c2b93f2b26b	AA_v3.5.exe

Suspicious use of FindShellTrayWindow 1 IoCs

Processes:

AA_v3.5.exe

pid process

2776 AA_v3.5.exe
Suspicious use of SendNotifyMessage 1 IoCs

Processes:

AA_v3.5.exe

pid process

2776 AA_v3.5.exe

pid	process
2776	AA_v3.5.exe

pid	process
2776	AA_v3.5.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

AA_v3.5.exe

description	pid	process	target process
PID 1676 wrote to memory of 2776	1676	AA_v3.5.exe	AA_v3.5.exe
PID 1676 wrote to memory of 2776	1676	AA_v3.5.exe	AA_v3.5.exe
PID 1676 wrote to memory of 2776	1676	AA_v3.5.exe	AA_v3.5.exe
PID 1676 wrote to memory of 2776	1676	AA_v3.5.exe	AA_v3.5.exe

C:\Users\Admin\AppData\Local\Temp\AA_v3.5.exe
"C:\Users\Admin\AppData\Local\Temp\AA_v3.5.exe"
1⤵
PID:2528

C:\Users\Admin\AppData\Local\Temp\AA_v3.5.exe
"C:\Users\Admin\AppData\Local\Temp\AA_v3.5.exe" -service -lunch
1⤵
- Suspicious use of WriteProcessMemory
PID:1676
- C:\Users\Admin\AppData\Local\Temp\AA_v3.5.exe
  "C:\Users\Admin\AppData\Local\Temp\AA_v3.5.exe"
  2⤵
  - Checks computer location settings
  - Modifies data under HKEY_USERS
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  PID:2776

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
16f74484c777ab16d8532d0f499a1b05

SHA1
ceeb988939192f09a9ce8871ff95fe3389df5781

SHA256
7a1bbfc921ae412e12ef1feb985ee65ff421e8e7aa2e4820ad4889fa08c0e390

SHA512
798cfab6da7b0f578db61f99d8c3b796aa0a8c6d49ea7c86ce4dd183eb6db7fd34dade12ad79a88eb889049bc43c841a88e4517811f846da57048e44b85c55bb

Download Submit
C:\ProgramData\AMMYY\hr3

Filesize
68B

MD5
9ce9d0ca6a6c2fd3875392354ccbd72e

SHA1
2c12a4d0c8371c1fdc15d58640bf31319f356b35

SHA256
9012c825f7fed9293888e0cf35853e6c501a0b100e6b9e8890b911ce08143dae

SHA512
4703be84a9238d10bcc3a1abd9368ab53527fc9f7933b4b6263c2fe15d8e28da7272b324b4b13cf96e29495ae77ee916cb5b9ce9fe1d8fa5bf384075eae731b4

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

Filesize
271B

MD5
714f2508d4227f74b6adacfef73815d8

SHA1
a35c8a796e4453c0c09d011284b806d25bdad04c

SHA256
a5579945f23747541c0e80b79e79375d4ca44feafcd425ee9bd9302e35312480

SHA512
1171a6eac6d237053815a40c2bcc2df9f4209902d6157777377228f3b618cad50c88a9519444ed5c447cf744e4655272fb42dabb567df85b4b19b1a2f1d086d8

Download Submit