flawedammyy | 43bba98a64dd96cf0571f3d6dceafdc549cc3767a1beab6fe4a6e1fd3ddd3153

Analysis

max time kernel
150s
max time network
146s
platform
windows7_x64
resource
win7-20230712-en
resource tags

arch:x64arch:x86image:win7-20230712-enlocale:en-usos:windows7-x64system
submitted
19-07-2023 10:42

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General

Target

AA_v3.5.exe
Size

751KB
MD5

5686a7032e37087f0fd082a04f727aad
SHA1

341fee5256dcc259a3a566ca8f0260eb1e60d730
SHA256

43bba98a64dd96cf0571f3d6dceafdc549cc3767a1beab6fe4a6e1fd3ddd3153
SHA512

0ebd95b20ef54d047fdaec37cfb10e2c39ea9d63fa28d6a6848ec11b34a4c4ec5f7a8a430d81670461203b9e675ac4a32cac3da4a1c471f16e8d003c6dea3345
SSDEEP

12288:oPO1fNZApVuCN7e/yalnM4RtjLDXcbOAS3snvVgbgJ:om1fN6pkCNa/yaq4RtjXcu3sSEJ

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-1-5-21-3408354897-1169622894-3874090110-1000\Control Panel\International\Geo\Nation	AA_v3.5.exe

Modifies data under HKEY_USERS 6 IoCs

description	ioc	Process
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
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy\Admin\hr = 537d56736608796e5f5e4c10595307405ce865e5b16b	AA_v3.5.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy\Admin\hr3 = c3ad326c84d1d4114052f9e5c02033cddb79244465fc635f3a1d542e72adb53db29f90f913b3f29c3b4ccc662d72e1b24ad0aadfaa9a47be44570530b23089b238164838	AA_v3.5.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeBackupPrivilege	2452	AA_v3.5.exe
Token: SeRestorePrivilege	2452	AA_v3.5.exe
Token: SeBackupPrivilege	2452	AA_v3.5.exe
Token: SeRestorePrivilege	2452	AA_v3.5.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2452	AA_v3.5.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
2452	AA_v3.5.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2168 wrote to memory of 2452	2168	AA_v3.5.exe	29
PID 2168 wrote to memory of 2452	2168	AA_v3.5.exe	29
PID 2168 wrote to memory of 2452	2168	AA_v3.5.exe	29
PID 2168 wrote to memory of 2452	2168	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:1996

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:2168
- 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 AdjustPrivilegeToken
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  PID:2452

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
de487ca28e577a2dd1478a6dd8202b33

SHA1
cfe8eab23156a7533e84e524e208f7f51c8bff1a

SHA256
1d67b912e10f63996fd52d7b92db7be0abcc2107376bbf274038c08769c7183d

SHA512
dc4e535c79a9edc674fabfa0f4898692049f5e0c9bc57b36485b313b3bec129d095c1aed0744c1ec610d94957e9465c83b05d7bdf1e2932a628730155a98cdcb

Download Submit
C:\ProgramData\AMMYY\hr3

Filesize
68B

MD5
2ca35bc74e2c9836d2eb2afcdd618ae4

SHA1
9de328cdb2063513db122839471c6964b1231396

SHA256
e8b428fa6e3183aa8e2d3968964646971939c9bb7419005809179b5c36f5c58e

SHA512
302a3652c752cec2094cde19f296d509a049586d9430fb26ce47d806a1f84626634a422841b53c1437c6a3e6e2fe2f98fefd580bd0520cdc1e3823dcc589b5be

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

Filesize
271B

MD5
714f2508d4227f74b6adacfef73815d8

SHA1
a35c8a796e4453c0c09d011284b806d25bdad04c

SHA256
a5579945f23747541c0e80b79e79375d4ca44feafcd425ee9bd9302e35312480

SHA512
1171a6eac6d237053815a40c2bcc2df9f4209902d6157777377228f3b618cad50c88a9519444ed5c447cf744e4655272fb42dabb567df85b4b19b1a2f1d086d8

Download Submit