87f384904add8574b7fb64030a7dafa8cebc825165553f01180e9dcb60bcfc69

Analysis

max time kernel
118s
max time network
122s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
24-12-2024 19:43

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General

Target

uninstall.exe
Size

199KB
MD5

6b76c5bf9f4851ca1ea09e9af10408bf
SHA1

2c2923750bcfa62b35c3f5ff30c41b7021bb3b2c
SHA256

732f723148b72727dac233138cfb937f9e4fe346a89dc10af3ace38ffadf46ab
SHA512

11c0b9e49f86db1e11ec614bc356d0cfb2b5c0fb0790ea3b1e9fdc47ee91d3addfcb783cf4a920898d1b8d941ee1c8a20ba8762216cbd56e0aae8d617d4e59a1
SSDEEP

3072:QQIURTXJFQY1YUYGYOWYYJYYYvSOYPDtRYc+OhM22:QsrkBV+522

Score

7^/10

discovery

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
1308	Au_.exe

Executes dropped EXE 1 IoCs

pid	Process
1308	Au_.exe

Loads dropped DLL 1 IoCs

pid	Process
2124	uninstall.exe

Drops desktop.ini file(s) 10 IoCs

description	ioc	Process
File opened for modification	C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Accessories\Tablet PC\Desktop.ini	Au_.exe
File opened for modification	C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Administrative Tools\desktop.ini	Au_.exe
File opened for modification	C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Maintenance\Desktop.ini	Au_.exe
File opened for modification	C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Accessories\Accessibility\Desktop.ini	Au_.exe
File opened for modification	C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Accessories\System Tools\Desktop.ini	Au_.exe
File opened for modification	C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Accessories\Windows PowerShell\desktop.ini	Au_.exe
File opened for modification	C:\ProgramData\Microsoft\Windows\Start Menu\Programs\desktop.ini	Au_.exe
File opened for modification	C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Games\Desktop.ini	Au_.exe
File opened for modification	C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup\desktop.ini	Au_.exe
File opened for modification	C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Accessories\Desktop.ini	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 2 IoCs

installer

resource	yara_rule
behavioral9/files/0x0006000000016dad-2.dat	nsis_installer_1
behavioral9/files/0x0006000000016dad-2.dat	nsis_installer_2

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2124 wrote to memory of 1308	2124	uninstall.exe	30
PID 2124 wrote to memory of 1308	2124	uninstall.exe	30
PID 2124 wrote to memory of 1308	2124	uninstall.exe	30
PID 2124 wrote to memory of 1308	2124	uninstall.exe	30
PID 2124 wrote to memory of 1308	2124	uninstall.exe	30
PID 2124 wrote to memory of 1308	2124	uninstall.exe	30
PID 2124 wrote to memory of 1308	2124	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:2124
- 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⤵
  - Deletes itself
  - Executes dropped EXE
  - Drops desktop.ini file(s)
  - System Location Discovery: System Language Discovery
  PID:1308

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

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

Filesize
199KB

MD5
6b76c5bf9f4851ca1ea09e9af10408bf

SHA1
2c2923750bcfa62b35c3f5ff30c41b7021bb3b2c

SHA256
732f723148b72727dac233138cfb937f9e4fe346a89dc10af3ace38ffadf46ab

SHA512
11c0b9e49f86db1e11ec614bc356d0cfb2b5c0fb0790ea3b1e9fdc47ee91d3addfcb783cf4a920898d1b8d941ee1c8a20ba8762216cbd56e0aae8d617d4e59a1

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