b1fd0e9d75588f9c6bdc3adb67699d212c8bc21827553c0e91ef0a2a57fd353f

Analysis

max time kernel
118s
max time network
125s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
29-11-2024 13:49

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General

Target

uninstall.exe
Size

289KB
MD5

f3ba0317b5aa56574ed8f6c776b31367
SHA1

7d4adf56931e75db6e23312df1978d450d247840
SHA256

0c7f513acd9a120065b1e3ea28ed1d3cb5a0b00832b88e5c79effb892857edab
SHA512

8c110cfb2dd03d6bdeaa38de69e8c7de2d4f354cead15c74072877b6ed9ff680a29b4ec7a089cf798eb2f0821de68eac0800ba7a273c7f9e84d0983708d0b043
SSDEEP

6144:Ue34ADRg4l8ai5PQtTZ763J8eWW43YLYjn5uO7D32fuCa7Bm8:tDq4OaQQTYJ8eP4/L5uO7D3f5BF

Score

7^/10

discovery spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

Processes:

Au_.exe

pid	Process
2760	Au_.exe

Loads dropped DLL 2 IoCs

Processes:

uninstall.exeAu_.exe

pid	Process
2656	uninstall.exe
2760	Au_.exe

Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 2 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:

uninstall.exeAu_.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	uninstall.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Au_.exe

NSIS installer 2 IoCs

installer

Processes:

resource	yara_rule
behavioral13/files/0x000500000001a063-5.dat	nsis_installer_1
behavioral13/files/0x000500000001a063-5.dat	nsis_installer_2

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

uninstall.exe

description	pid	Process	procid_target
PID 2656 wrote to memory of 2760	2656	uninstall.exe	30
PID 2656 wrote to memory of 2760	2656	uninstall.exe	30
PID 2656 wrote to memory of 2760	2656	uninstall.exe	30
PID 2656 wrote to memory of 2760	2656	uninstall.exe	30

C:\Users\Admin\AppData\Local\Temp\uninstall.exe
"C:\Users\Admin\AppData\Local\Temp\uninstall.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2656
- C:\Users\Admin\AppData\Local\Temp\~nsu.tmp\Au_.exe
  "C:\Users\Admin\AppData\Local\Temp\~nsu.tmp\Au_.exe" _?=C:\Users\Admin\AppData\Local\Temp\
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  PID:2760

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\~nsu.tmp\Au_.exe

Filesize
289KB

MD5
f3ba0317b5aa56574ed8f6c776b31367

SHA1
7d4adf56931e75db6e23312df1978d450d247840

SHA256
0c7f513acd9a120065b1e3ea28ed1d3cb5a0b00832b88e5c79effb892857edab

SHA512
8c110cfb2dd03d6bdeaa38de69e8c7de2d4f354cead15c74072877b6ed9ff680a29b4ec7a089cf798eb2f0821de68eac0800ba7a273c7f9e84d0983708d0b043

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\Users\Admin\AppData\Local\Temp\nsy37D3.tmp\aminsis.dll

Filesize
567KB

MD5
450753ad96785a240a39deccab3af0d0

SHA1
21c544064d2ffa6444508268ce258a330d459fc5

SHA256
1c371dcc6c3428ea98fb0d2dcb612b4ebc731f3ed72e683c8e33058cd2a952d3

SHA512
c41b834f4228b7668316095569c836b4e0d55c5fbf310c65b0e0453ef0e74a3ce8f9357cea90b80f6590f85dd7708eeb4eec27518811ea4aab20c0e7f5643dab

Download Submit