45b5b444fb9c51207474a3d3baa9062056ce5f44d4f092930fc68e06da6f8faa

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
18-08-2024 03:27

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General

Target

Uninstall.exe
Size

89KB
MD5

9111cd15ae20e9466f9f849b7af57ca1
SHA1

416420588d49d2a12ad61b6bac94a22be1e1c7fb
SHA256

226324be5f0a18c000a6ee22f7083eb4997a10b5778e274fd86ed876e94ad8fd
SHA512

ffc4bbe5be308fa36a33678616025a6af3d7ae4b15eaa6991d082ba8d89a1fb5c39bd961f776aff532f2aec88238b699eea20dfa1132a5ce80da32f3613f0b48
SSDEEP

1536:sUqBWUSFNrdN90DukJrXVXmXeUv+yLPrulXytFDOpFAM:PGW3B+DukJrF2OorLDulibE

Score

7^/10

discovery

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
876	Au_.exe

Loads dropped DLL 3 IoCs

pid	Process
876	Au_.exe
876	Au_.exe
876	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
behavioral14/files/0x000800000002341f-3.dat	nsis_installer_1

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1900 wrote to memory of 876	1900	Uninstall.exe	85
PID 1900 wrote to memory of 876	1900	Uninstall.exe	85
PID 1900 wrote to memory of 876	1900	Uninstall.exe	85

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:1900
- 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:876

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\nsd9C50.tmp\InstallOptions.dll

Filesize
12KB

MD5
29459d9ee2bce32ed937fb1f965f9d5e

SHA1
8fff45ed45f3af8f8c248eba9a1c02c9c5fc911d

SHA256
ad07968b7d93ef19e10e1deb52e0c912e96dde30c0a49a0239daf176fd4c9ef5

SHA512
d4ef4eadb0f53e7086a1d242bf7f745ad79d83d9ecbfaa283cf0dd499271a804589a575040bb20d5c98e86197cc65ca05ab1a358c556ea82a3e297d0255015a6

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C:\Users\Admin\AppData\Local\Temp\nsd9C50.tmp\System.dll

Filesize
10KB

MD5
05e52213cfa17dee760186462a9645ed

SHA1
f6d5e82080bbba65db7d54e89250c95af833aae3

SHA256
d9d3ffa4c7d7a152f435f4777e72aa1b6a6c0555f277e59eedebc587c3b66ba5

SHA512
586eea0bec6345b437667ce528bc2396427dd444a396456e38046a8962e92a52e7ee62b9f6c97f41bc1fb4a1b3905a302d6f7055e26b84e60709ba3b416ad172

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C:\Users\Admin\AppData\Local\Temp\nsd9C50.tmp\ioSpecial.ini

Filesize
634B

MD5
6b5bfbd2fa736a8e09c989aaa8913d92

SHA1
d9b3589bdcec78e74e4601341a368a6f04b73510

SHA256
09e9cb84d9d783c299698e0bab57f62580678b5291da9c63888cdb01994421e2

SHA512
a96ecc38a6e71fdea088cef82ad4b6f81085e0923c597ce8705f67fbcad4ff947e6b41c4e45c0d99bc292151c2c91896ea4d2d4fe389bd3bef9785877ddf9bb8

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

Filesize
89KB

MD5
9111cd15ae20e9466f9f849b7af57ca1

SHA1
416420588d49d2a12ad61b6bac94a22be1e1c7fb

SHA256
226324be5f0a18c000a6ee22f7083eb4997a10b5778e274fd86ed876e94ad8fd

SHA512
ffc4bbe5be308fa36a33678616025a6af3d7ae4b15eaa6991d082ba8d89a1fb5c39bd961f776aff532f2aec88238b699eea20dfa1132a5ce80da32f3613f0b48

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