flawedammyy | ee573647477339784dcef81024de1be1762833a20e5cc2b89a93e47d05b86b6a

Analysis

max time kernel
100s
max time network
17s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
06-08-2024 08:19

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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

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

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

pid	Process
2740	rh111.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1600 wrote to memory of 2740	1600	rh111.exe	30
PID 1600 wrote to memory of 2740	1600	rh111.exe	30
PID 1600 wrote to memory of 2740	1600	rh111.exe	30
PID 1600 wrote to memory of 2740	1600	rh111.exe	30

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:1724

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:1600
- 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:2740

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

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Downloads

C:\ProgramData\AMMYY\settings3.bin

Filesize
334B

MD5
7e8cc2f847e1678184e4964053f4aae6

SHA1
8f69235efee35098fc6a3f79c2e9a6b643969bcd

SHA256
5f0273a768c00ede085870791e3f8a5d9167842a214a2995e01aa2b03501e98c

SHA512
1aba181d0361d67155fec7bacda1322d9c57be393e92edf9987476e800611ad6f9f2076839caf218f400eb1690efe3bfdbf781536821affb6ffba78568b3f930

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads