61d3e7a824489b33ea6e60c9138bf4d44128194cbd0dc28fe0adc56ccda78ae3

Analysis

max time kernel
119s
max time network
120s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
19-01-2025 14:44

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General

Target

uninst.exe
Size

42KB
MD5

fa21c1645b859f87cd1e959f85e6638e
SHA1

b59178cbe1e8fd2ac37198a4a39fed466caae3d8
SHA256

4c3617a752cd2fb6c61be4c0d3356e6f327d3469b36ec61fffcc2f5377d2aa12
SHA512

86647eb6db343129205e1723d32041d669d86805bd4840a6c0b350288010c3dc327b1a4cff12d9c913e255beaf6b9ea947a95b33ad3b371aa63b9938904f9ab3
SSDEEP

768:p1cVhpQI2EQK0iPDh84nScF15GYbWjXO3XJEFltdiOv5foji:XQpQ5EP0ijnRTXJ0IOhoi

Score

7^/10

discovery

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
2004	Au_.exe

Executes dropped EXE 1 IoCs

pid	Process
2004	Au_.exe

Loads dropped DLL 4 IoCs

pid	Process
1252	uninst.exe
2004	Au_.exe
2004	Au_.exe
2004	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
behavioral19/files/0x000500000001926b-2.dat	nsis_installer_1
behavioral19/files/0x000500000001926b-2.dat	nsis_installer_2

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1252 wrote to memory of 2004	1252	uninst.exe	30
PID 1252 wrote to memory of 2004	1252	uninst.exe	30
PID 1252 wrote to memory of 2004	1252	uninst.exe	30
PID 1252 wrote to memory of 2004	1252	uninst.exe	30
PID 1252 wrote to memory of 2004	1252	uninst.exe	30
PID 1252 wrote to memory of 2004	1252	uninst.exe	30
PID 1252 wrote to memory of 2004	1252	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:1252
- 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:2004

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
42KB

MD5
fa21c1645b859f87cd1e959f85e6638e

SHA1
b59178cbe1e8fd2ac37198a4a39fed466caae3d8

SHA256
4c3617a752cd2fb6c61be4c0d3356e6f327d3469b36ec61fffcc2f5377d2aa12

SHA512
86647eb6db343129205e1723d32041d669d86805bd4840a6c0b350288010c3dc327b1a4cff12d9c913e255beaf6b9ea947a95b33ad3b371aa63b9938904f9ab3

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