4458db20eae5b73025267cc6b0b6d92ca75df40c87583d917a2ed20949b771b7

Analysis

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

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
12/10/2024, 06:24

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General

Target

uninstall.exe
Size

295KB
MD5

a9a20fcbce48f111e658e7d65640b335
SHA1

c61a745391d6c7bd370f3fd9ae4e3aeface70994
SHA256

8091f6554680e1c0bce5faddb093083dfb07ff10f639e7c03a169cf6249e2e1a
SHA512

81bc93c459a80ed197fd9b7c23243aa9110a2e12d4a3a0573e1671b1427e66145dcab56b892be74f5edbd57f3bb4bbfcc25cc31ab8a515f3c29187331c45a9d5
SSDEEP

6144:Ee34vGjKTK0HVkUEYA2q5NbrWN83gQwwDuzMn6yDkvE39kojTxDtEI:2GjeKuVnvon+N83LwwiAn6KkM33nxDl

Score

7^/10

discovery spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2708	Au_.exe

Loads dropped DLL 2 IoCs

pid	Process
2776	uninstall.exe
2708	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

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

resource	yara_rule
behavioral17/files/0x000500000001962a-2.dat	nsis_installer_1
behavioral17/files/0x000500000001962a-2.dat	nsis_installer_2

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2776 wrote to memory of 2708	2776	uninstall.exe	30
PID 2776 wrote to memory of 2708	2776	uninstall.exe	30
PID 2776 wrote to memory of 2708	2776	uninstall.exe	30
PID 2776 wrote to memory of 2708	2776	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:2776
- 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:2708

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

Replay Monitor

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Downloads

\Users\Admin\AppData\Local\Temp\nstE44.tmp\aminsis.dll

Filesize
567KB

MD5
f346047b13f37f79c462e59a6319faa1

SHA1
ce9e7cb9719000a69b463fe024c81229e322279f

SHA256
e78e0e61707cabec8383f1e74da9db8e0fa123a3a7b36f0080d70fbaed6f7453

SHA512
429209cc489ba9ac2d62055b128efb3cded3e31f966c7cdb1aee592ec7a54ab090526705fa2519498d92eb4bc2efa141cd83adc6c251b793388ad1208b172167

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

Filesize
295KB

MD5
a9a20fcbce48f111e658e7d65640b335

SHA1
c61a745391d6c7bd370f3fd9ae4e3aeface70994

SHA256
8091f6554680e1c0bce5faddb093083dfb07ff10f639e7c03a169cf6249e2e1a

SHA512
81bc93c459a80ed197fd9b7c23243aa9110a2e12d4a3a0573e1671b1427e66145dcab56b892be74f5edbd57f3bb4bbfcc25cc31ab8a515f3c29187331c45a9d5

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