flawedammyy | 1831806fc27d496f0f9dcfd8402724189deaeb5f8bcf0118f3d6484d0bdee9ed

Analysis

max time kernel
150s
max time network
147s
platform
windows7_x64
resource
win7-20230712-en
resource tags

arch:x64arch:x86image:win7-20230712-enlocale:en-usos:windows7-x64system
submitted
16-07-2023 09:05

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General

Target

tmp.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-1-5-21-1014134971-2480516131-292343513-1000\Control Panel\International\Geo\Nation	tmp.exe

Modifies data under HKEY_USERS 6 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy\Admin	tmp.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE	tmp.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy	tmp.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy\Admin\hr = 537d56736608796e5f5e4c10595357f17d978ce8b16b	tmp.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy\Admin\hr3 = a352d86f619c418c6dac513a7b2697fba8c5e7cabc12289b6ce4fcfe8be1cee67a83910ea94b6f76e52419186b47a52a2f94c8ae34f311f1c27a94c6028215d6df11d846	tmp.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	tmp.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2796	tmp.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
2796	tmp.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1664 wrote to memory of 2796	1664	tmp.exe	31
PID 1664 wrote to memory of 2796	1664	tmp.exe	31
PID 1664 wrote to memory of 2796	1664	tmp.exe	31
PID 1664 wrote to memory of 2796	1664	tmp.exe	31

C:\Users\Admin\AppData\Local\Temp\tmp.exe
"C:\Users\Admin\AppData\Local\Temp\tmp.exe"
1⤵
PID:1524

C:\Users\Admin\AppData\Local\Temp\tmp.exe
"C:\Users\Admin\AppData\Local\Temp\tmp.exe" -service -lunch
1⤵
- Suspicious use of WriteProcessMemory
PID:1664
- C:\Users\Admin\AppData\Local\Temp\tmp.exe
  "C:\Users\Admin\AppData\Local\Temp\tmp.exe"
  2⤵
  - Checks computer location settings
  - Modifies data under HKEY_USERS
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  PID:2796

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
49ddc3cda61f75fa5e73b58b8abc7c9b

SHA1
efb8cf72d1b9f11ebbc2fff027971b62a743f1ba

SHA256
d3d066b3ae1d1f21bfcb82578c2dcede3128ff45ebfb2984944f73ba689c7575

SHA512
36d9afc5a2b39ed842cb349394963e094d12354be2e9678033254b4cf15229530f7468f273b3625af4a147e57c1d5ded73285e17f92aac0ffa20c43f402fb392

Download Submit
C:\ProgramData\AMMYY\hr3

Filesize
68B

MD5
afe33cfd2c6e0cc32c0596c728b27665

SHA1
90b0d5b454b23db4f379625a575f731dc4f54ad1

SHA256
5906a7d5993cadb915ef410d4fded0bd10045ad628f3a37104b587422080a8bf

SHA512
23dfe8615154b4efb74e097d1f6ed1ec1479dbc1aef38a46b1a04bfb0a64a0504e0424b857d230dc82d63e269f89d70f40c880b5db1b4ed6ca3321c8b4f88e18

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

Filesize
271B

MD5
714f2508d4227f74b6adacfef73815d8

SHA1
a35c8a796e4453c0c09d011284b806d25bdad04c

SHA256
a5579945f23747541c0e80b79e79375d4ca44feafcd425ee9bd9302e35312480

SHA512
1171a6eac6d237053815a40c2bcc2df9f4209902d6157777377228f3b618cad50c88a9519444ed5c447cf744e4655272fb42dabb567df85b4b19b1a2f1d086d8

Download Submit