9be83a22321aae449837d4ed462bc7b09dac25a052379b33b3d369921353c438

Analysis

max time kernel
118s
max time network
120s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
01-10-2024 09:49

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General

Target

uninst.exe
Size

58KB
MD5

cbc28fc391e93383281b779f417fdf43
SHA1

b2f8134842b15db2c74f4c0337678b6cd1da5fd6
SHA256

5a2bda57dea74c2cd75a66ec8e168dba3f498a7d6c9a9d06c8c7b2c6aba5bb0c
SHA512

2a614cbf0fbf23b79dadf7b48af157c94a3327a166edfcb7e61238b786c6693b66b4ae3ab98c7e7b04145d42625103dad449d3999583da26f68e773e69216506
SSDEEP

1536:/QpQ5EP0ijnRTXJk2n2AznO0Ucs8c33sFlXi:/QIURTXJk2PO0nS3ii

Score

7^/10

discovery

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
996	Au_.exe

Executes dropped EXE 1 IoCs

pid	Process
996	Au_.exe

Loads dropped DLL 4 IoCs

pid	Process
2148	uninst.exe
996	Au_.exe
996	Au_.exe
996	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	Au_.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	uninst.exe

NSIS installer 2 IoCs

installer

resource	yara_rule
behavioral25/files/0x0005000000019227-2.dat	nsis_installer_1
behavioral25/files/0x0005000000019227-2.dat	nsis_installer_2

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2148 wrote to memory of 996	2148	uninst.exe	30
PID 2148 wrote to memory of 996	2148	uninst.exe	30
PID 2148 wrote to memory of 996	2148	uninst.exe	30
PID 2148 wrote to memory of 996	2148	uninst.exe	30
PID 2148 wrote to memory of 996	2148	uninst.exe	30
PID 2148 wrote to memory of 996	2148	uninst.exe	30
PID 2148 wrote to memory of 996	2148	uninst.exe	30

C:\Users\Admin\AppData\Local\Temp\uninst.exe
"C:\Users\Admin\AppData\Local\Temp\uninst.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2148
- 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
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  PID:996

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
58KB

MD5
cbc28fc391e93383281b779f417fdf43

SHA1
b2f8134842b15db2c74f4c0337678b6cd1da5fd6

SHA256
5a2bda57dea74c2cd75a66ec8e168dba3f498a7d6c9a9d06c8c7b2c6aba5bb0c

SHA512
2a614cbf0fbf23b79dadf7b48af157c94a3327a166edfcb7e61238b786c6693b66b4ae3ab98c7e7b04145d42625103dad449d3999583da26f68e773e69216506

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