flawedammyy | 349f7e00ee29b349b00c32318cb9b829b162167702957295712d37ebbb2a7a9a

Analysis

max time kernel
150s
max time network
140s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
11-01-2024 12:28

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General

Target

AA_v3.exe
Size

722KB
MD5

45c9b54d66cbcc2de89f93e25f368a45
SHA1

2e5265f35f75a50c89e592e127bc80e1e45aa840
SHA256

349f7e00ee29b349b00c32318cb9b829b162167702957295712d37ebbb2a7a9a
SHA512

25c3f1ec6d2e233464090f584777b15f18acfd1cb12124c236680689545ec8208bc364d26d7202e38368dbec34cd824600afb51845df8c9de8c8e83fba8d8b1f
SSDEEP

12288:x2QKNGp2YPjE0d63iVg5Bfi781Rt1hpGqzdpW9eKVQvTPRpsbS5hEgK:xSIp2Ydd6SVcpz1RtXpGadsbShK

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-1-5-21-3470981204-343661084-3367201002-1000\Control Panel\International\Geo\Nation	AA_v3.exe

Modifies data under HKEY_USERS 6 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	AA_v3.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy\Admin	AA_v3.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE	AA_v3.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy	AA_v3.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy\Admin\hr = 537d56736608796e5f5e4c1059539707e494c11bb26b	AA_v3.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy\Admin\hr3 = 4d5eebb24f5281882770e2331ddaec2bed0e7b01772d8092f8e72f54882b08521245f2b97f81d009fc5d0080c69f7af300a9fd8b73041d9d05c71c9daf01181e97707fd7	AA_v3.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
3044	AA_v3.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
3044	AA_v3.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2740 wrote to memory of 3044	2740	AA_v3.exe	29
PID 2740 wrote to memory of 3044	2740	AA_v3.exe	29
PID 2740 wrote to memory of 3044	2740	AA_v3.exe	29
PID 2740 wrote to memory of 3044	2740	AA_v3.exe	29

C:\Users\Admin\AppData\Local\Temp\AA_v3.exe
"C:\Users\Admin\AppData\Local\Temp\AA_v3.exe"
1⤵
PID:2552

C:\Users\Admin\AppData\Local\Temp\AA_v3.exe
"C:\Users\Admin\AppData\Local\Temp\AA_v3.exe" -service -lunch
1⤵
- Suspicious use of WriteProcessMemory
PID:2740
- C:\Users\Admin\AppData\Local\Temp\AA_v3.exe
  "C:\Users\Admin\AppData\Local\Temp\AA_v3.exe"
  2⤵
  - Checks computer location settings
  - Modifies data under HKEY_USERS
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  PID:3044

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
b061e4dd45670dcf96936cdb195947f1

SHA1
4f8e9c4f9c4bddafa05a238560ce3e83f065bf77

SHA256
2f78224092c0034f661f6cd3d01e748c25fba57287fde74e13fc003d443ca4ec

SHA512
7f8dbe78edec5531c3164c22fa4f34ebbb85db9c107a945355f6563bdb5b34a3ef784b1ebf2f90493a8d6ffc04d2cf66476bd1075acc28827330e50ded4f8d64

Download Submit
C:\ProgramData\AMMYY\hr3

Filesize
68B

MD5
966d885882d3ba5d7cced11ac2680417

SHA1
fe20c1cc210f601f16a1cc4b3d7eb669463f1c25

SHA256
2c39ba05a1b408e6a85dc67e79877e8141f95a220418f66cfd6f9ea5a9191fff

SHA512
c25ad3609dc05073e257f7a0ee181973383a3ffee58d1ca1079f655dca36b8df76a0687cb564ef976790800cba0e61a812f812db643aab7bd6d2a16bd1f66bff

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

Filesize
270B

MD5
6910d9160b66c4395f587a279e80f132

SHA1
54949c04c8c0970aa5e2d3fb2912318daab97b98

SHA256
72d44ac6019d486fc1a58334ff8ed692de0a9ed96de3142638c71376ceade87c

SHA512
82967a8bdbad58f2a81d063c84294153dbdd86322d4b6e3631122530dc7f00fd209ed1d2b0683eb60f726fd3d6f93c7615bd1d0d1fa1f5441119d0e5007582b9

Download Submit