flawedammyy | ee573647477339784dcef81024de1be1762833a20e5cc2b89a93e47d05b86b6a

Analysis

max time kernel
120s
max time network
121s
platform
windows7_x64
resource
win7-20240705-en
resource tags

arch:x64arch:x86image:win7-20240705-enlocale:en-usos:windows7-x64system
submitted
05-08-2024 22:37

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

rh111.exe
Size

798KB
MD5

90aadf2247149996ae443e2c82af3730
SHA1

050b7eba825412b24e3f02d76d7da5ae97e10502
SHA256

ee573647477339784dcef81024de1be1762833a20e5cc2b89a93e47d05b86b6a
SHA512

eec32bb82b230dd309c29712e72d4469250e651449e127479d178eddbafd5a46ec8048a753bc2c1a0fdf1dc3ed72a9453ca66fb49cbf0f95a12704e5427182be
SSDEEP

24576:Uj0JJ4p/A4npt3XojeQG5EtzRtO7GvmDguXd:UjoJ4u4zojegylDN

Score

10^/10

flawedammyy bootkit discovery persistence trojan

Malware Config

Signatures

FlawedAmmyy RAT
Remote-access trojan based on leaked code for the Ammyy remote admin software.
trojan flawedammyy
Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs
Bootkits write to the MBR to gain persistence at a level below the operating system.
bootkit persistence

Bootkit
T1542.003

Processes:

rh111.exe

description ioc process

File opened for modification \??\PhysicalDrive0 rh111.exe

description	ioc	process
File opened for modification	\??\PhysicalDrive0	rh111.exe

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

Processes:

rh111.exerh111.exerh111.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rh111.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rh111.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rh111.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

rh111.exe

pid process

2800 rh111.exe

pid	process
2800	rh111.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

rh111.exe

description	pid	process	target process
PID 2768 wrote to memory of 2800	2768	rh111.exe	rh111.exe
PID 2768 wrote to memory of 2800	2768	rh111.exe	rh111.exe
PID 2768 wrote to memory of 2800	2768	rh111.exe	rh111.exe
PID 2768 wrote to memory of 2800	2768	rh111.exe	rh111.exe

C:\Users\Admin\AppData\Local\Temp\rh111.exe
"C:\Users\Admin\AppData\Local\Temp\rh111.exe"
1⤵
- Writes to the Master Boot Record (MBR)
- System Location Discovery: System Language Discovery
PID:2724

C:\Users\Admin\AppData\Local\Temp\rh111.exe
"C:\Users\Admin\AppData\Local\Temp\rh111.exe" -service -lunch
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2768
- C:\Users\Admin\AppData\Local\Temp\rh111.exe
  "C:\Users\Admin\AppData\Local\Temp\rh111.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: GetForegroundWindowSpam
  PID:2800

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Pre-OS Boot

T1542

Bootkit

T1542.003

Privilege Escalation

Defense Evasion

Pre-OS Boot

T1542

Bootkit

T1542.003

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\ProgramData\AMMYY\settings3.bin

Filesize
327B

MD5
006d1c6da8e538cc9ffe408d951a6584

SHA1
40968b80fe53fa2909bf290e846efdebdb3fa04a

SHA256
9944f7617e1d4dedaddd29b0a4aeb024752c4db24ca0f6ac34d405a5c01fea85

SHA512
ee994df50cc57840a3b27ad8c4bd2d8311a3274b87733b14f2390e8af93be61496f14e601331e6d14020f2cdb8195935d2629add2320cda833c725407cbdaae0

Download Submit