167e69ad30fc65bd1f671655bb9d7b65f4576d6ac250424c27d0cb0be623d1a1

Analysis

max time kernel
125s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
06-09-2024 19:26

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General

Target

Uninstall.exe
Size

87KB
MD5

8df58f296e0b1a3d0e69fd804ef44c81
SHA1

ee37897fb20df46e6a9aba42976edab2dcd1a6b3
SHA256

727efe8953380a29b8837878bcb6a6e18c9702810914032808bc1d59f65c090d
SHA512

0e65753417725a785c5d591fa4eec797f9ca6b1f55d0d8f9103ed4bdc5e33f0a34246cd025708f550f018958b0a40d70093b5b64aa566082b6e4ff624eab049e
SSDEEP

1536:Tspe3RDckBV0DdkJOHR83d0cpdXwyNLIAW35pSkeVS9XaxIdPa6:Ta1DdkJoR85pdXnLIA8p3eVS9XT

Score

7^/10

discovery

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
4560	Au_.exe

Loads dropped DLL 2 IoCs

pid	Process
4560	Au_.exe
4560	Au_.exe

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
behavioral20/files/0x000b0000000234c9-3.dat	nsis_installer_1

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2068 wrote to memory of 4560	2068	Uninstall.exe	83
PID 2068 wrote to memory of 4560	2068	Uninstall.exe	83
PID 2068 wrote to memory of 4560	2068	Uninstall.exe	83

C:\Users\Admin\AppData\Local\Temp\Uninstall.exe
"C:\Users\Admin\AppData\Local\Temp\Uninstall.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2068
- 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:4560

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

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:\Users\Admin\AppData\Local\Temp\nsiB4E9.tmp\InstallOptions.dll

Filesize
12KB

MD5
3c19f79ce11facc2fc4d3351dbb263e0

SHA1
17f4bf4b18ea7700f70ac7d825dc997be0d25f71

SHA256
cfaba712ad640ce2b4890005ffcf03ed9e2a18a6cf9075295f3aaea1478896b9

SHA512
05c9ac861e4fed610171fcb5fad40abc30cbf90e9c7cb13c758f52cdff568af0fdd6af968db4fb143a748c77f21c353c7cffea28cbcbd2ad17157038ab490273

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C:\Users\Admin\AppData\Local\Temp\nsiB4E9.tmp\System.dll

Filesize
10KB

MD5
725145e8caa39635cab9899c47c72eda

SHA1
30478c907551bd920bf359638b091fc5c10b5a53

SHA256
1759e4f7777fb8c9ed356a7d4dc237a90e0760061685d44ea02d40ca9e359ceb

SHA512
de31286ea10321f762a3b6e7c6c82177d5b6f45a82adc936fcbbc23105708cbbbec903ba94ba94e7723e80f1828393e5395ef575b37136b19de7535e74e24547

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C:\Users\Admin\AppData\Local\Temp\nsiB4E9.tmp\ioSpecial.ini

Filesize
610B

MD5
6a755886bb81270737b884baf943981e

SHA1
bf89db6c22cda120fd783f8897826304a085345a

SHA256
f7850365c82941233961e00d4e5cffad3e1fe5f153538b3101ac54654d087df7

SHA512
c818adbfdfa93c7647872bd2433aff56599980bec2191469e4427ea0cd79b858ad69856c8d388d4c9e655be226552a730a476202a670b2c2397b87acd77c7723

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

Filesize
87KB

MD5
8df58f296e0b1a3d0e69fd804ef44c81

SHA1
ee37897fb20df46e6a9aba42976edab2dcd1a6b3

SHA256
727efe8953380a29b8837878bcb6a6e18c9702810914032808bc1d59f65c090d

SHA512
0e65753417725a785c5d591fa4eec797f9ca6b1f55d0d8f9103ed4bdc5e33f0a34246cd025708f550f018958b0a40d70093b5b64aa566082b6e4ff624eab049e

Download Submit