38c4146af9972c6f781c81cb5f130944a52e976fc40e7752ccaf66908b4a9308

Analysis

max time kernel
119s
max time network
120s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
13-10-2024 04:43

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General

Target

uninstall.exe
Size

285KB
MD5

4851bd4633b39183bf6e5f2efa5b04d4
SHA1

1a3d31735a816597a6617c9f6cbb1fc60db3a5fa
SHA256

93ad5581ead8ae1b5a42377ac8011f132cf1034606567851e4e4280af4c4be61
SHA512

c375d8124663ceae89c95ee05aac1ae9f8e9312f1af6489f5a8c452ccf71b9826331c7b683995b6bbd0b3ccfe111c9341d4590185e6cede808d1f1d674767620
SSDEEP

6144:Ee34BqpeZH+zpyuuz6GZkDOJ/7OafSH5KmrWym09x1g:UaeZHkwuPikQ7lKH5p5H9x1g

Score

7^/10

discovery spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2400	Au_.exe

Loads dropped DLL 2 IoCs

pid	Process
1056	uninstall.exe
2400	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
behavioral13/files/0x000500000001a423-2.dat	nsis_installer_1
behavioral13/files/0x000500000001a423-2.dat	nsis_installer_2

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1056 wrote to memory of 2400	1056	uninstall.exe	31
PID 1056 wrote to memory of 2400	1056	uninstall.exe	31
PID 1056 wrote to memory of 2400	1056	uninstall.exe	31
PID 1056 wrote to memory of 2400	1056	uninstall.exe	31

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:1056
- 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:2400

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\nse2EF.tmp\aminsis.dll

Filesize
559KB

MD5
51ba1095f0ae45a2d444bea506cb9ad4

SHA1
038a5d53d055a6d440bd2c8864c2f51db206c5e5

SHA256
b620091bf9973e807e12155d2247a6d233b5d13ec38c426675470ab4b26f0539

SHA512
f5fe2dd0f19bcaab47540ceedbec71f7f7c5b833c8772c097594c458e5f1101fe9feb849812b65c175055f71dfb13f11c4ad94fef42cd66f247413e453de3361

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

Filesize
285KB

MD5
4851bd4633b39183bf6e5f2efa5b04d4

SHA1
1a3d31735a816597a6617c9f6cbb1fc60db3a5fa

SHA256
93ad5581ead8ae1b5a42377ac8011f132cf1034606567851e4e4280af4c4be61

SHA512
c375d8124663ceae89c95ee05aac1ae9f8e9312f1af6489f5a8c452ccf71b9826331c7b683995b6bbd0b3ccfe111c9341d4590185e6cede808d1f1d674767620

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