flawedammyy | 43bba98a64dd96cf0571f3d6dceafdc549cc3767a1beab6fe4a6e1fd3ddd3153

Analysis

max time kernel
150s
max time network
143s
platform
windows7_x64
resource
win7-20230712-en
resource tags

arch:x64arch:x86image:win7-20230712-enlocale:en-usos:windows7-x64system
submitted
19-07-2023 11:34

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

AA_v3.5.exe
Size

751KB
MD5

5686a7032e37087f0fd082a04f727aad
SHA1

341fee5256dcc259a3a566ca8f0260eb1e60d730
SHA256

43bba98a64dd96cf0571f3d6dceafdc549cc3767a1beab6fe4a6e1fd3ddd3153
SHA512

0ebd95b20ef54d047fdaec37cfb10e2c39ea9d63fa28d6a6848ec11b34a4c4ec5f7a8a430d81670461203b9e675ac4a32cac3da4a1c471f16e8d003c6dea3345
SSDEEP

12288:oPO1fNZApVuCN7e/yalnM4RtjLDXcbOAS3snvVgbgJ:om1fN6pkCNa/yaq4RtjXcu3sSEJ

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-1-5-21-4219371764-2579186923-3390623117-1000\Control Panel\International\Geo\Nation	AA_v3.5.exe

Modifies data under HKEY_USERS 7 IoCs

Processes:

AA_v3.5.exe

description	ioc	Process
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
Key created	\REGISTRY\USER\.DEFAULT\Software\Ammyy\Admin	AA_v3.5.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Ammyy\Admin\hr = 537d56736608796e5f5e4c105953c742ea6671e5b16b	AA_v3.5.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Ammyy\Admin\hr3 = 07e953a6b825e23310fb4e5aab09c5c7323aae8b647331e9bdd553aca819ea06e38c5c8742978ef9b86f765cba0b542fa9a13433a268db56c9f59b377f521942698aefe8	AA_v3.5.exe

Suspicious use of FindShellTrayWindow 1 IoCs

Processes:

AA_v3.5.exe

pid	Process
1636	AA_v3.5.exe

Suspicious use of SendNotifyMessage 1 IoCs

Processes:

AA_v3.5.exe

pid	Process
1636	AA_v3.5.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

AA_v3.5.exe

description	pid	Process	procid_target
PID 2688 wrote to memory of 1636	2688	AA_v3.5.exe	29
PID 2688 wrote to memory of 1636	2688	AA_v3.5.exe	29
PID 2688 wrote to memory of 1636	2688	AA_v3.5.exe	29
PID 2688 wrote to memory of 1636	2688	AA_v3.5.exe	29

C:\Users\Admin\AppData\Local\Temp\AA_v3.5.exe
"C:\Users\Admin\AppData\Local\Temp\AA_v3.5.exe"
1⤵
PID:2236

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:2688
- 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:1636

Network

MITRE ATT&CK Enterprise v6

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

Loading Replay Monitor...

Downloads

C:\ProgramData\AMMYY\hr

Filesize
22B

MD5
99839b41ff5830aae204a75c7c634a0c

SHA1
673707ad25a6e17027359ef04dc09a7ff812139d

SHA256
52a450bda3d6e536e6c98d30092e10d7b721de66bc6383d602ac702d7bd6b7f2

SHA512
9aa436c130f652208cb62c0cfad955b44986022ea59fbdafe137bcab7fc604d6e028eb970df576c92c15e2b7828a0868617048994811416cbd3944bdbe5a6fb2

Download Submit
C:\ProgramData\AMMYY\hr3

Filesize
68B

MD5
96639b6ca989b087a6575e0430e1b763

SHA1
75715323b082d53cb7de0e12fe9a4579204fcbd3

SHA256
f1723781faae57e7c7ecf9f7cb96f1b073e4d5074d12af75afcfc110b4c487bf

SHA512
070ab0d5b46d54a49619ea381e4a95ca470cecaf5c7dd3688136533295019b3c8590053cc781efa3511b8160cb72c2f0c53dccb074da414da501b547e3d4c58c

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

Filesize
271B

MD5
714f2508d4227f74b6adacfef73815d8

SHA1
a35c8a796e4453c0c09d011284b806d25bdad04c

SHA256
a5579945f23747541c0e80b79e79375d4ca44feafcd425ee9bd9302e35312480

SHA512
1171a6eac6d237053815a40c2bcc2df9f4209902d6157777377228f3b618cad50c88a9519444ed5c447cf744e4655272fb42dabb567df85b4b19b1a2f1d086d8

Download Submit