flawedammyy | 42d60a91abadc88d18b8c2bddae09bc2b5d3f0c34759947f3990c9eb0eade31f

Analysis

max time kernel
151s
max time network
160s
platform
windows7_x64
resource
win7-20231020-en
resource tags

arch:x64arch:x86image:win7-20231020-enlocale:en-usos:windows7-x64system
submitted
01-12-2023 15:12

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General

Target

b5f65158f6713aa2fb7dd0b09d5f6dd39ae3cd1212ad330da207244d522aee20.exe
Size

726KB
MD5

d22d719495f23e38805bbea5df434abb
SHA1

3cfeeb974e65c0ba671d81459d2c6b694d5d4eaf
SHA256

b5f65158f6713aa2fb7dd0b09d5f6dd39ae3cd1212ad330da207244d522aee20
SHA512

d87670775d222b25b329377c8d26c2a4c88ce6b1aa1d6fc004b95ad93f377fd56fb03e709b4b61b26c4fcf06fe477e42afe9f9715884ea91699548b1e4d4a4c7
SSDEEP

12288:ozJUxbtiiTHRJuEkQO7EwC2ZwFRtAdRXRryd+sq1zsgp:o9oNTHRz/O7rT6FRteRXR2IsqXp

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-1-5-21-1154728922-3261336865-3456416385-1000\Control Panel\International\Geo\Nation	b5f65158f6713aa2fb7dd0b09d5f6dd39ae3cd1212ad330da207244d522aee20.exe

Modifies data under HKEY_USERS 6 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy\Admin	b5f65158f6713aa2fb7dd0b09d5f6dd39ae3cd1212ad330da207244d522aee20.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE	b5f65158f6713aa2fb7dd0b09d5f6dd39ae3cd1212ad330da207244d522aee20.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy	b5f65158f6713aa2fb7dd0b09d5f6dd39ae3cd1212ad330da207244d522aee20.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy\Admin\hr = 537d56736608796e5f5e4c10595327829e103c7bb26b	b5f65158f6713aa2fb7dd0b09d5f6dd39ae3cd1212ad330da207244d522aee20.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy\Admin\hr3 = 33a40e3a0febe0f5e4a3fb72ca457349c57c4603cb999c2d1d2e552b01357277a62e3d90ae270bb4f65a9e81b73fcfae267c54054217b27074242315675e4ae0fe387751	b5f65158f6713aa2fb7dd0b09d5f6dd39ae3cd1212ad330da207244d522aee20.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	b5f65158f6713aa2fb7dd0b09d5f6dd39ae3cd1212ad330da207244d522aee20.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2948	b5f65158f6713aa2fb7dd0b09d5f6dd39ae3cd1212ad330da207244d522aee20.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
2948	b5f65158f6713aa2fb7dd0b09d5f6dd39ae3cd1212ad330da207244d522aee20.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2772 wrote to memory of 2948	2772	b5f65158f6713aa2fb7dd0b09d5f6dd39ae3cd1212ad330da207244d522aee20.exe	29
PID 2772 wrote to memory of 2948	2772	b5f65158f6713aa2fb7dd0b09d5f6dd39ae3cd1212ad330da207244d522aee20.exe	29
PID 2772 wrote to memory of 2948	2772	b5f65158f6713aa2fb7dd0b09d5f6dd39ae3cd1212ad330da207244d522aee20.exe	29
PID 2772 wrote to memory of 2948	2772	b5f65158f6713aa2fb7dd0b09d5f6dd39ae3cd1212ad330da207244d522aee20.exe	29

C:\Users\Admin\AppData\Local\Temp\b5f65158f6713aa2fb7dd0b09d5f6dd39ae3cd1212ad330da207244d522aee20.exe
"C:\Users\Admin\AppData\Local\Temp\b5f65158f6713aa2fb7dd0b09d5f6dd39ae3cd1212ad330da207244d522aee20.exe"
1⤵
PID:1896

C:\Users\Admin\AppData\Local\Temp\b5f65158f6713aa2fb7dd0b09d5f6dd39ae3cd1212ad330da207244d522aee20.exe
"C:\Users\Admin\AppData\Local\Temp\b5f65158f6713aa2fb7dd0b09d5f6dd39ae3cd1212ad330da207244d522aee20.exe" -service -lunch
1⤵
- Suspicious use of WriteProcessMemory
PID:2772
- C:\Users\Admin\AppData\Local\Temp\b5f65158f6713aa2fb7dd0b09d5f6dd39ae3cd1212ad330da207244d522aee20.exe
  "C:\Users\Admin\AppData\Local\Temp\b5f65158f6713aa2fb7dd0b09d5f6dd39ae3cd1212ad330da207244d522aee20.exe"
  2⤵
  - Checks computer location settings
  - Modifies data under HKEY_USERS
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  PID:2948

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

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Downloads

C:\ProgramData\AMMYY\hr

Filesize
22B

MD5
66e367bb316b311a35dd46b3457c6023

SHA1
9b55e30d3f6113179d158395de888e21160f3fcc

SHA256
eeebb85254cbabb8b429cdc16f61de8fcba0c0415f0e71d0fc0d91e7963a03ff

SHA512
33ce7d150950c031f728e84a8e74d515a04340bd68ee8a5a8ea2200fd8e82306d8fec64a942ba2c62253ad0b7ef08f7f7005cf19b102a600add51d6364d3d44a

Download Submit
C:\ProgramData\AMMYY\hr3

Filesize
68B

MD5
922e7ec2506d63449987d9c99068adf4

SHA1
46f88283c607c56fac34469fdb14c6a89d74328e

SHA256
7625f69a8f2286bb3600b75514fa9e01965bf39c46b9da2fb6d9011b01c78028

SHA512
1fe8a81c49bf1b89b2df788585b579a28553a58b82a48caa1ed43141d7870b39c771cf6d1258e4d2a1a72f25ed7741b42052d9e874d94f85e8c28c6bfb8155bd

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

Filesize
271B

MD5
e4f7224ed356915816bebb715326d18a

SHA1
8b441bb4276212b9e774cba75fdbb723cb68af93

SHA256
74378574282fceda54a869e384dffdf9d7d202d5a1937d781fcc501d6115e93c

SHA512
5a7fc84ea39311ef5277aaf3fa0e207b6e095ec236ea877756da7849d38678b8e73a7bd5ea49ae51ae730adc2a56cd79dd0fc3be63bcbb58ae50f9f030140ba2

Download Submit