b83824ec7ede22d0950983a6d7daaa2d07d7857c953a69d438aa59e91e3fedf8

Analysis

max time kernel
0s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
07/08/2024, 08:09

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General

Target

$0/uninstall.exe
Size

78KB
MD5

34166b45c2acef07ab15b95a16beaca2
SHA1

3e691cc27c0e5949c8cab8c9cd3582ba5fb43ed5
SHA256

11775363c88b507158086a80b3acb4dc33d17aca2a114c9da7b6de80fb904ad0
SHA512

889cdbf9420b0c733292ae75fb8431a3ff3638c91f99ba066d9d74ff97d46f35451b6da5bd6359d1cb04d4e9c979a2d9b64caa9aa33d0c80b6510cf2f030b1a5
SSDEEP

1536:PEkjY1zy214Qay0DGkJ7qAELVigJYJScpxVJlCd2/Dv:8kjAJ4dDGkJ+AI0HlJl/7

Score

7^/10

discovery

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
944	Au_.exe

Loads dropped DLL 2 IoCs

pid	Process
944	Au_.exe
944	Au_.exe

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 1 IoCs

installer

resource	yara_rule
behavioral8/files/0x0007000000023470-3.dat	nsis_installer_1

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2284 wrote to memory of 944	2284	uninstall.exe	81
PID 2284 wrote to memory of 944	2284	uninstall.exe	81
PID 2284 wrote to memory of 944	2284	uninstall.exe	81

C:\Users\Admin\AppData\Local\Temp\$0\uninstall.exe
"C:\Users\Admin\AppData\Local\Temp\$0\uninstall.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2284
- 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\$0\
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  PID:944

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

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:\Users\Admin\AppData\Local\Temp\nstB660.tmp\InstallOptions.dll

Filesize
13KB

MD5
d765c492c21689e3d9d61634371fd861

SHA1
ac200933671ae52c9d5544d0e2e8e9144d286c83

SHA256
551e6042dd494ea01549555ffc194ab9729da09058ec714eb368dd06642c9bbc

SHA512
9919a9e848c8f1e26c75d0d29207571e4b86a4140bd554743d2c1f8bd7f386fe4919345b163d89a5d907fb165e435ba0ac5f6b1101713636141f156a420e2e0f

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C:\Users\Admin\AppData\Local\Temp\nstB660.tmp\System.dll

Filesize
10KB

MD5
fe24766ba314f620d57d0cf7339103c0

SHA1
8641545f03f03ff07485d6ec4d7b41cbb898c269

SHA256
802ef71440f662f456bed6283a5ff78066af016897fe6bfd29cac6edc2967bbd

SHA512
60d36959895cebf29c4e7713e6d414980139c7aa4ed1c8c96fefb672c1263af0ce909fb409534355895649c0e8056635112efb0da2ba05694446aec2ca77e2e3

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C:\Users\Admin\AppData\Local\Temp\nstB660.tmp\ioSpecial.ini

Filesize
691B

MD5
c1bff3560338d12f4e975ba7f910a0f7

SHA1
cf3a676c4adf5b336e508542f782d07c94311dab

SHA256
6b66013729f923da289e441dd78131f72ff35b2b887553ba3cfb96810b6bac5c

SHA512
824afd387f05e38727f160fde96535c174fa2ac6db1b12a6e440f2e50c7d6bf1f88c72b3d25c60839ecec5bc8fa2a152538afd33f15c7c812d61bb2f4cbdeb8b

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

Filesize
78KB

MD5
34166b45c2acef07ab15b95a16beaca2

SHA1
3e691cc27c0e5949c8cab8c9cd3582ba5fb43ed5

SHA256
11775363c88b507158086a80b3acb4dc33d17aca2a114c9da7b6de80fb904ad0

SHA512
889cdbf9420b0c733292ae75fb8431a3ff3638c91f99ba066d9d74ff97d46f35451b6da5bd6359d1cb04d4e9c979a2d9b64caa9aa33d0c80b6510cf2f030b1a5

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