flawedammyy | 1831806fc27d496f0f9dcfd8402724189deaeb5f8bcf0118f3d6484d0bdee9ed

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
20/07/2023, 11:21

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General

Target

aa.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-1-5-21-2969888527-3102471180-2307688834-1000\Control Panel\International\Geo\Nation	aa.exe

Modifies data under HKEY_USERS 6 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	aa.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy\Admin	aa.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE	aa.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy	aa.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy\Admin\hr = 537d56736608796e5f5e4c10595347fda97db4e5b16b	aa.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy\Admin\hr3 = 05b1fe063bd524623324e508ec6344e2e04c856f1ef4bf532468b4976104d0f1e8ab95c4abefd511bfd6eae29fc9476306fcad892f45ca36a19280933d0b043640d2264d	aa.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2832	aa.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
2832	aa.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2280 wrote to memory of 2832	2280	aa.exe	29
PID 2280 wrote to memory of 2832	2280	aa.exe	29
PID 2280 wrote to memory of 2832	2280	aa.exe	29
PID 2280 wrote to memory of 2832	2280	aa.exe	29

C:\Users\Admin\AppData\Local\Temp\aa.exe
"C:\Users\Admin\AppData\Local\Temp\aa.exe"
1⤵
PID:1360

C:\Users\Admin\AppData\Local\Temp\aa.exe
"C:\Users\Admin\AppData\Local\Temp\aa.exe" -service -lunch
1⤵
- Suspicious use of WriteProcessMemory
PID:2280
- C:\Users\Admin\AppData\Local\Temp\aa.exe
  "C:\Users\Admin\AppData\Local\Temp\aa.exe"
  2⤵
  - Checks computer location settings
  - Modifies data under HKEY_USERS
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  PID:2832

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

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Downloads

C:\ProgramData\AMMYY\hr

Filesize
22B

MD5
f769ed72ee69c8659a0152693aacaefa

SHA1
f82b4bb31eaac7960349df21c71c03901918d285

SHA256
714892561c145f8e02ee7436a6335d459513b7bfe6b3e9d7c4e6dee24d1b73d3

SHA512
0995caba7f3040f01e35538d1339d9875045990a4ec9328bf5a8b54d8f8f243c1451edb0979affc043fca5a5d7540836050ddcf77c8258cc5ecd64ee4edb49ce

Download Submit
C:\ProgramData\AMMYY\hr3

Filesize
68B

MD5
6185640f34e6981518fa442ef41eb46a

SHA1
509bbb4139376d474fe7c26fc61ef2d321a973c7

SHA256
8d0dbd9c1856ea679f7ddd6964ffe38d0443eb3c4c765b8b74b4c1ed07f2dbd5

SHA512
ec8c8719ac6b60d7b271e36a0448b48d9803a3cbe304a21117d842322ef0c4685c9147f550e99fccaed8aaa52b0e535e0a0834510a005dd5b1bed5fb7c98cbf7

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

Filesize
271B

MD5
714f2508d4227f74b6adacfef73815d8

SHA1
a35c8a796e4453c0c09d011284b806d25bdad04c

SHA256
a5579945f23747541c0e80b79e79375d4ca44feafcd425ee9bd9302e35312480

SHA512
1171a6eac6d237053815a40c2bcc2df9f4209902d6157777377228f3b618cad50c88a9519444ed5c447cf744e4655272fb42dabb567df85b4b19b1a2f1d086d8

Download Submit