81e45c1e6d6a718624159e116e6daa8c1547f39bef7f56163303e7eca8abfae1

Analysis

max time kernel
122s
max time network
128s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
29-09-2024 14:21

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General

Target

uninstall.exe
Size

38KB
MD5

4d80cf1dcb4050035ababe91073376ed
SHA1

66479ddbc4426fb45a526d7a6fb1df1ad09eedde
SHA256

09511049b3b5d519bd9ad7fffe29fbae5bde288364e69cff6490a64d6e4f601e
SHA512

972bddb89968cb422c6e35aad471b3ca262a40169ff624a207d5a4053efd211251fa04f6381a34230163d0a22239897e751b24dbfa8390444ffe77b7d3c261cb
SSDEEP

768:c4wO7XBz+5Qm3W0tYdrQZHV4EWuWEUOg4jjfS3XJ3Tc8F1:PLXB65939tY6HBg4sXJ3TJ

Score

7^/10

discovery

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2216	Au_.exe

Loads dropped DLL 1 IoCs

pid	Process
2124	uninstall.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
behavioral25/files/0x00040000000191c8-2.dat	nsis_installer_1
behavioral25/files/0x00040000000191c8-2.dat	nsis_installer_2

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2216	Au_.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2124 wrote to memory of 2216	2124	uninstall.exe	30
PID 2124 wrote to memory of 2216	2124	uninstall.exe	30
PID 2124 wrote to memory of 2216	2124	uninstall.exe	30
PID 2124 wrote to memory of 2216	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⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: GetForegroundWindowSpam
  PID:2216

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
38KB

MD5
4d80cf1dcb4050035ababe91073376ed

SHA1
66479ddbc4426fb45a526d7a6fb1df1ad09eedde

SHA256
09511049b3b5d519bd9ad7fffe29fbae5bde288364e69cff6490a64d6e4f601e

SHA512
972bddb89968cb422c6e35aad471b3ca262a40169ff624a207d5a4053efd211251fa04f6381a34230163d0a22239897e751b24dbfa8390444ffe77b7d3c261cb

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