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 16:34

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General

Target

AA_v3.5.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

Processes:

AA_v3.5.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3408354897-1169622894-3874090110-1000\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\hr = 537d56736608796e5f5e4c105953472f572d60e4b16b	AA_v3.5.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy\Admin\hr3 = 05cb9972100efce8857a0f4b9e97706ae62fe39302e7fa1496f9d89280ef294b7dd376b68d8ba77c9c62b514710f894678f223c0066acc8b2d2e722d36da6a5e51072b4b	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

Suspicious use of FindShellTrayWindow 1 IoCs

Processes:

AA_v3.5.exe

pid	Process
2324	AA_v3.5.exe

Suspicious use of SendNotifyMessage 1 IoCs

Processes:

AA_v3.5.exe

pid	Process
2324	AA_v3.5.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

AA_v3.5.exe

description	pid	Process	procid_target
PID 2896 wrote to memory of 2324	2896	AA_v3.5.exe	29
PID 2896 wrote to memory of 2324	2896	AA_v3.5.exe	29
PID 2896 wrote to memory of 2324	2896	AA_v3.5.exe	29
PID 2896 wrote to memory of 2324	2896	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:1196

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:2896
- 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:2324

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
605ffb9fca5bf25d3433552a540ba088

SHA1
013405628608cda20d5d0e8640ecf80009ecb91b

SHA256
01daad3e2f1c8030cbbd4877048aa291438acfc372b835e22d6c68077b033802

SHA512
2fb2883c2eab050c6c86c35510b4501479713edc4ac8c4738a8bbc1b93d48f13b1c80ac521f2c4f8744f5485868bdedb57040ddf44c3d42e03fa0f9788e26b1c

Download Submit
C:\ProgramData\AMMYY\hr3

Filesize
68B

MD5
04886fad5a11376b6e8d3adb05421eb6

SHA1
eb3d4a280793966cc0059bc435c7e29cb4c3771e

SHA256
cc425e85851d516b3f509846744bb50cc3168dbbb70e2622e1e9f3cab0409f91

SHA512
455e0a83f89540bc24044d5cb44f53a133ac5b43170bc078593e7a3a9587dfc60a0cf8fd259ced80de0c79c2ca4d19d5af2533e8b6dc65baa29c1c3f6902c1cb

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

Filesize
271B

MD5
714f2508d4227f74b6adacfef73815d8

SHA1
a35c8a796e4453c0c09d011284b806d25bdad04c

SHA256
a5579945f23747541c0e80b79e79375d4ca44feafcd425ee9bd9302e35312480

SHA512
1171a6eac6d237053815a40c2bcc2df9f4209902d6157777377228f3b618cad50c88a9519444ed5c447cf744e4655272fb42dabb567df85b4b19b1a2f1d086d8

Download Submit