flawedammyy | 1831806fc27d496f0f9dcfd8402724189deaeb5f8bcf0118f3d6484d0bdee9ed

Analysis

max time kernel
150s
max time network
141s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
04-12-2024 16:23

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General

Target

file.exe
Size

755KB
MD5

11bc606269a161555431bacf37f7c1e4
SHA1

63c52b0ac68ab7464e2cd777442a5807db9b5383
SHA256

1831806fc27d496f0f9dcfd8402724189deaeb5f8bcf0118f3d6484d0bdee9ed
SHA512

0be867fce920d493d2a37f996627bceea87621ba4071ae4383dd4a24748eedf7dc5ca6db089217b82ec38870248c6840f785683bf359d1014c7109e7d46dd90f
SSDEEP

12288:XVFUEuNmwvGrw9i0aTGRGicBckyyFRtWY1i3FTsvOVV0gz:3UEUUw9RaTNicBrPFRtJ1iVTsC5z

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
Flawedammyy family
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-1-5-21-312935884-697965778-3955649944-1000\Control Panel\International\Geo\Nation	file.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	file.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	file.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	file.exe

Modifies data under HKEY_USERS 6 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	file.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy\Admin	file.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE	file.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy	file.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy\Admin\hr = 537d567366087c6658524c175253d7fb6bfc2019b36b	file.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy\Admin\hr3 = 1cd8d6dc2480b43e597f346efbb189da7741ca5d271affd9ea9c013a581f09ce0344e59d6f06abaa4de5f11f6a0ab52bfaab79336886f0753999e498febf6f780bd90f57cd271b4ababb35	file.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2700	file.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
2700	file.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2804 wrote to memory of 2700	2804	file.exe	32
PID 2804 wrote to memory of 2700	2804	file.exe	32
PID 2804 wrote to memory of 2700	2804	file.exe	32
PID 2804 wrote to memory of 2700	2804	file.exe	32

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- System Location Discovery: System Language Discovery
PID:2692

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe" -service -lunch
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2804
- C:\Users\Admin\AppData\Local\Temp\file.exe
  "C:\Users\Admin\AppData\Local\Temp\file.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:2700

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
38a0a7a62b19d13314fe91d420c3a553

SHA1
44298839c4ba1c4032827e97572645df8b8d7c41

SHA256
64cfc585c01dfe19f0278255080925fecae251745f0f9efbf67ccac25cbb4c3c

SHA512
83b253b7945c8f4924f1b84ae0948340dd0741e204d02325ae61d5124cd2295c643afde8979edbf56624e76bdf2e34b5ea77166439e1a62858d28d3dd43c1a93

Download Submit
C:\ProgramData\AMMYY\hr3

Filesize
75B

MD5
aeb8ff6008953703ca4b7f18a06f0be7

SHA1
500b06af2dc5e61762b05116ddba317e89fe2116

SHA256
bbc7de84655bf233f72b08c57e8319710a89040a485391c1c200cae50a683a01

SHA512
17156543eeaec39c41138e3cd55a0505ee38cf27a7a21520ea0798d34044acf9e919a8ce4d2d36d153097232e0cd9930c581a7564577f5ee403e30d495aaa742

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

Filesize
271B

MD5
714f2508d4227f74b6adacfef73815d8

SHA1
a35c8a796e4453c0c09d011284b806d25bdad04c

SHA256
a5579945f23747541c0e80b79e79375d4ca44feafcd425ee9bd9302e35312480

SHA512
1171a6eac6d237053815a40c2bcc2df9f4209902d6157777377228f3b618cad50c88a9519444ed5c447cf744e4655272fb42dabb567df85b4b19b1a2f1d086d8

Download Submit