flawedammyy | 54f47b3d009102576c0c59abffca99c2ecd890a2f0c7399e8df5f1af48206d94

Analysis

max time kernel
150s
max time network
140s
platform
windows7_x64
resource
win7-20240215-en
resource tags

arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
submitted
11-05-2024 11:11

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General

Target

AA_v3.exe
Size

755KB
MD5

11bc606269a161555431bacf37f7c1e4
SHA1

63c52b0ac68ab7464e2cd777442a5807db9b5383
SHA256

1831806fc27d496f0f9dcfd8402724189deaeb5f8bcf0118f3d6484d0bdee9ed
SHA512

0be867fce920d493d2a37f996627bceea87621ba4071ae4383dd4a24748eedf7dc5ca6db089217b82ec38870248c6840f785683bf359d1014c7109e7d46dd90f
SSDEEP

12288:XVFUEuNmwvGrw9i0aTGRGicBckyyFRtWY1i3FTsvOVV0gz:3UEUUw9RaTNicBrPFRtJ1iVTsC5z

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-1-5-21-2248906074-2862704502-246302768-1000\Control Panel\International\Geo\Nation	AA_v3.exe

Modifies data under HKEY_USERS 6 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy\Admin	AA_v3.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE	AA_v3.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy	AA_v3.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy\Admin\hr = 537d56736608796e5f5e4c105953e72af9c9dbfcb26b	AA_v3.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy\Admin\hr3 = 9002db2418bf6e76f1bc3fa2bbd29fb81e373b596d0ef7adf0789602eada41daeaa04a70010f5d00f98cfa47b3dc8470d3828818416487e0adb1f765dcfa0d7af24f1bfa	AA_v3.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	AA_v3.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2968	AA_v3.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
2968	AA_v3.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2912 wrote to memory of 2968	2912	AA_v3.exe	29
PID 2912 wrote to memory of 2968	2912	AA_v3.exe	29
PID 2912 wrote to memory of 2968	2912	AA_v3.exe	29
PID 2912 wrote to memory of 2968	2912	AA_v3.exe	29

C:\Users\Admin\AppData\Local\Temp\AA_v3.exe
"C:\Users\Admin\AppData\Local\Temp\AA_v3.exe"
1⤵
PID:2908

C:\Users\Admin\AppData\Local\Temp\AA_v3.exe
"C:\Users\Admin\AppData\Local\Temp\AA_v3.exe" -service -lunch
1⤵
- Suspicious use of WriteProcessMemory
PID:2912
- C:\Users\Admin\AppData\Local\Temp\AA_v3.exe
  "C:\Users\Admin\AppData\Local\Temp\AA_v3.exe"
  2⤵
  - Checks computer location settings
  - Modifies data under HKEY_USERS
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  PID:2968

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
8bdea9fde2953f310a0de53e77003e48

SHA1
b303fd688e3684dd5e26855362ea4d7a970dc159

SHA256
901ea6b4a27fd976a5fcdeff63a3fe889f0deb3b3f5a3d598f7adf9c972afed1

SHA512
1825ce19d306ab750e88fb570b527fc9668f1edea32918925feafbfb46b0bcec4133506aea54aab2480ca757ddfa7427fd9db6e2958b915479d804ff3eff03fb

Download Submit
C:\ProgramData\AMMYY\hr3

Filesize
68B

MD5
c1440d775df90666efdebf8fc23c4ba8

SHA1
dbac58329a10ac67ab67fd3a41fab1cd2bc32789

SHA256
3ef002d4ee81d6472c312fa4a6f924dadfdd3d697e32275fe0b1797b7527fbbd

SHA512
0cde369c87a42109cae1b868be721166a6085fd5200601118704c91341bd808367ac8db20a065bb29b856f8175984972f8ad46ea014a64bbd3c38e4f20bdd33e

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

Filesize
271B

MD5
714f2508d4227f74b6adacfef73815d8

SHA1
a35c8a796e4453c0c09d011284b806d25bdad04c

SHA256
a5579945f23747541c0e80b79e79375d4ca44feafcd425ee9bd9302e35312480

SHA512
1171a6eac6d237053815a40c2bcc2df9f4209902d6157777377228f3b618cad50c88a9519444ed5c447cf744e4655272fb42dabb567df85b4b19b1a2f1d086d8

Download Submit