9f8ac42c6b88e50d04f8c0f2c45afd9387997345f4617280d057df7f03363bca

Analysis

max time kernel
95s
max time network
145s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
05/12/2024, 05:06

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General

Target

uninst.exe
Size

59KB
MD5

34f6d44a2d291218eea56b97d44a9d50
SHA1

c61543a79a94691ee5a56106e55f3c61c40796b6
SHA256

f7109f2743afb1026c740da41952824e1a96600a1deebed4393d59eb0a53de9e
SHA512

a830f72b1c1250c3c8e94a35ab095cd0fa85021cd5862662753877802dca0a80b178a8d678b8295c87d70b10132f307556791d90c5058159447702cfc9cefaab
SSDEEP

768:7e3PFaDVyOQgljLDKRJyM3BmsHzSB4us/wJJajCP8nn3gYRNBy/04bfznLNC/ML/:K3cpyORJLuB4P4AJJpYRN4DvThqtHK

Score

8^/10

discovery

Malware Config

Signatures

Drops file in Drivers directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system32\drivers\etc\hosts	Au_.exe
File opened for modification	C:\Windows\SysWOW64\drivers\	Au_.exe

Deletes itself 1 IoCs

pid	Process
3252	Au_.exe

Executes dropped EXE 1 IoCs

pid	Process
3252	Au_.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\	Au_.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\Tasks\	Au_.exe
File opened for modification	C:\Windows\	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	uninst.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Au_.exe

NSIS installer 2 IoCs

installer

resource	yara_rule
behavioral26/files/0x0007000000023cb4-4.dat	nsis_installer_1
behavioral26/files/0x0007000000023cb4-4.dat	nsis_installer_2

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2564 wrote to memory of 3252	2564	uninst.exe	82
PID 2564 wrote to memory of 3252	2564	uninst.exe	82
PID 2564 wrote to memory of 3252	2564	uninst.exe	82

C:\Users\Admin\AppData\Local\Temp\uninst.exe
"C:\Users\Admin\AppData\Local\Temp\uninst.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2564
- 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⤵
  - Drops file in Drivers directory
  - Deletes itself
  - Executes dropped EXE
  - Drops file in System32 directory
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  PID:3252

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\~nsu.tmp\Au_.exe

Filesize
59KB

MD5
34f6d44a2d291218eea56b97d44a9d50

SHA1
c61543a79a94691ee5a56106e55f3c61c40796b6

SHA256
f7109f2743afb1026c740da41952824e1a96600a1deebed4393d59eb0a53de9e

SHA512
a830f72b1c1250c3c8e94a35ab095cd0fa85021cd5862662753877802dca0a80b178a8d678b8295c87d70b10132f307556791d90c5058159447702cfc9cefaab

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