flawedammyy | 7d9779e92331131d76ea6bdbb047ccea2201f4b5c1558c3944a2aa8f5b73b3cf

Analysis

max time kernel
150s
max time network
144s
platform
windows7_x64
resource
win7-20230220-en
resource tags

arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
submitted
30/03/2023, 07:17

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General

Target

Device/HarddiskVolume6/SUKUMARANS BACKUP/C Drive/Downloads/AA_v3.5.exe
Size

746KB
MD5

2cbf5657ffd8858a9597f296a60270c2
SHA1

b130611c92788337c4f6bb9e9454ff06eb409166
SHA256

9b3f4d6a9bae4d7f9cfe45e706db8fe4baef51ae12353941e8b1532b231e6eac
SHA512

06339a299c8c9ce55e9b96582e54e0bf9e04f894ceb47c07486adf8b0140c2a01fd0932207aca8112ee0b16ba8711fee9435e37339aafb94f167b5a736ee7d0b
SSDEEP

12288:6NgEvTkYGzXUMA7PTgM0YOg26y4RtcxcUwhqb3omaY80NP6gL:6XTszE7PTgM0YOgA4RtcbwhsSYFVL

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-1-5-21-1283023626-844874658-3193756055-1000\Control Panel\International\Geo\Nation	AA_v3.5.exe

Modifies data under HKEY_USERS 6 IoCs

description	ioc	Process
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy\Admin\hr3 = 14e13dc51a24fe018871fe0165d7670e35cb5817610574df099ff4d56f33f44f6103597d9c1e7051648ef959f31957fc82072ef201bf8a57a03c78bf605c3b292a3ba06f	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
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy\Admin\hr = 537d56736608796e5f5e4c105953376ec6b9a03db16b	AA_v3.5.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
1532	AA_v3.5.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
1532	AA_v3.5.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1576 wrote to memory of 1532	1576	AA_v3.5.exe	29
PID 1576 wrote to memory of 1532	1576	AA_v3.5.exe	29
PID 1576 wrote to memory of 1532	1576	AA_v3.5.exe	29
PID 1576 wrote to memory of 1532	1576	AA_v3.5.exe	29

C:\Users\Admin\AppData\Local\Temp\Device\HarddiskVolume6\SUKUMARANS BACKUP\C Drive\Downloads\AA_v3.5.exe
"C:\Users\Admin\AppData\Local\Temp\Device\HarddiskVolume6\SUKUMARANS BACKUP\C Drive\Downloads\AA_v3.5.exe"
1⤵
PID:1768

C:\Users\Admin\AppData\Local\Temp\Device\HarddiskVolume6\SUKUMARANS BACKUP\C Drive\Downloads\AA_v3.5.exe
"C:\Users\Admin\AppData\Local\Temp\Device\HarddiskVolume6\SUKUMARANS BACKUP\C Drive\Downloads\AA_v3.5.exe" -service -lunch
1⤵
- Suspicious use of WriteProcessMemory
PID:1576
- C:\Users\Admin\AppData\Local\Temp\Device\HarddiskVolume6\SUKUMARANS BACKUP\C Drive\Downloads\AA_v3.5.exe
  "C:\Users\Admin\AppData\Local\Temp\Device\HarddiskVolume6\SUKUMARANS BACKUP\C Drive\Downloads\AA_v3.5.exe"
  2⤵
  - Checks computer location settings
  - Modifies data under HKEY_USERS
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  PID:1532

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
8e43fc8f94ddfe6e2f4ef41fbc064bcc

SHA1
0ebde406361eca484726cd588db7c257e80a80f3

SHA256
0157e5557a2c9c5375c7aa3fb1e9f649d27ce287492a27ef1be5d62401489d18

SHA512
f6cd2476a8633c925457586b4780038a40eff66fa60ac2987db51cf90d5d728d6718c6c0c5f6faf603c0f9910dd40786907f0344ee1aa4738520518d3b998bd0

Download Submit
C:\ProgramData\AMMYY\hr3

Filesize
68B

MD5
3dbe023998d1d906de81dea6e53a6d64

SHA1
5a4f0bc35bb84f7b00032b41600945c3d21b5fdf

SHA256
fcd21a26eedca9b024c9e4751ecc9308cc9effc4152d7cacae1c7218fc69720e

SHA512
e74c3292238a6ecb15007a9ba9026f31fd310fb9424c7f4f4c468ba36eae74404424b8e0894e2dead1d97d30c2e1bd0936e610b4d4d797b2455a12f1e1371669

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

Filesize
271B

MD5
714f2508d4227f74b6adacfef73815d8

SHA1
a35c8a796e4453c0c09d011284b806d25bdad04c

SHA256
a5579945f23747541c0e80b79e79375d4ca44feafcd425ee9bd9302e35312480

SHA512
1171a6eac6d237053815a40c2bcc2df9f4209902d6157777377228f3b618cad50c88a9519444ed5c447cf744e4655272fb42dabb567df85b4b19b1a2f1d086d8

Download Submit