b9749e2a157f33aeff5033bb98391323c6a19201b54126f608b5cfc3e2c3f6e9

Analysis

max time kernel
120s
max time network
94s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
21-09-2024 02:56

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General

Target

b9749e2a157f33aeff5033bb98391323c6a19201b54126f608b5cfc3e2c3f6e9N.exe
Size

84KB
MD5

9a194b9f88e6d733e2a76f89877b5730
SHA1

69b478edb21f9747e478ee5a5765fadff58fcf59
SHA256

b9749e2a157f33aeff5033bb98391323c6a19201b54126f608b5cfc3e2c3f6e9
SHA512

0c66ec0efeb8c361e12abea61b90844d422ec2b8a9fbff45c01a2725faf617a372766785204a5cd83850ce0867d07d3cef56812a47c19f91bf67d8744c9192b2
SSDEEP

768:sv6nMfqt+K48h8jlc8ebdtF5EmpW/p/hxRSH9NxIkL9v/Q6sWDdR2iRv:sv8I8ujcZKmpSFhxRSHdL9bsSn2iRv

Score

10^/10

discovery evasion persistence

Malware Config

Signatures

Modifies visiblity of hidden/system files in Explorer 2 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	woeluc.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\Control Panel\International\Geo\Nation	b9749e2a157f33aeff5033bb98391323c6a19201b54126f608b5cfc3e2c3f6e9N.exe

Executes dropped EXE 1 IoCs

pid	Process
4604	woeluc.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\woeluc = "C:\\Users\\Admin\\woeluc.exe"	woeluc.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2016	1152	WerFault.exe	81

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	b9749e2a157f33aeff5033bb98391323c6a19201b54126f608b5cfc3e2c3f6e9N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	woeluc.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
4604	woeluc.exe
4604	woeluc.exe
4604	woeluc.exe
4604	woeluc.exe
4604	woeluc.exe
4604	woeluc.exe
4604	woeluc.exe
4604	woeluc.exe
4604	woeluc.exe
4604	woeluc.exe
4604	woeluc.exe
4604	woeluc.exe
4604	woeluc.exe
4604	woeluc.exe
4604	woeluc.exe
4604	woeluc.exe
4604	woeluc.exe
4604	woeluc.exe
4604	woeluc.exe
4604	woeluc.exe
4604	woeluc.exe
4604	woeluc.exe
4604	woeluc.exe
4604	woeluc.exe
4604	woeluc.exe
4604	woeluc.exe
4604	woeluc.exe
4604	woeluc.exe
4604	woeluc.exe
4604	woeluc.exe
4604	woeluc.exe
4604	woeluc.exe
4604	woeluc.exe
4604	woeluc.exe
4604	woeluc.exe
4604	woeluc.exe
4604	woeluc.exe
4604	woeluc.exe
4604	woeluc.exe
4604	woeluc.exe
4604	woeluc.exe
4604	woeluc.exe
4604	woeluc.exe
4604	woeluc.exe
4604	woeluc.exe
4604	woeluc.exe
4604	woeluc.exe
4604	woeluc.exe
4604	woeluc.exe
4604	woeluc.exe
4604	woeluc.exe
4604	woeluc.exe
4604	woeluc.exe
4604	woeluc.exe
4604	woeluc.exe
4604	woeluc.exe
4604	woeluc.exe
4604	woeluc.exe
4604	woeluc.exe
4604	woeluc.exe
4604	woeluc.exe
4604	woeluc.exe
4604	woeluc.exe
4604	woeluc.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1152	b9749e2a157f33aeff5033bb98391323c6a19201b54126f608b5cfc3e2c3f6e9N.exe
4604	woeluc.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1152 wrote to memory of 4604	1152	b9749e2a157f33aeff5033bb98391323c6a19201b54126f608b5cfc3e2c3f6e9N.exe	84
PID 1152 wrote to memory of 4604	1152	b9749e2a157f33aeff5033bb98391323c6a19201b54126f608b5cfc3e2c3f6e9N.exe	84
PID 1152 wrote to memory of 4604	1152	b9749e2a157f33aeff5033bb98391323c6a19201b54126f608b5cfc3e2c3f6e9N.exe	84

C:\Users\Admin\AppData\Local\Temp\b9749e2a157f33aeff5033bb98391323c6a19201b54126f608b5cfc3e2c3f6e9N.exe
"C:\Users\Admin\AppData\Local\Temp\b9749e2a157f33aeff5033bb98391323c6a19201b54126f608b5cfc3e2c3f6e9N.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1152
- C:\Users\Admin\woeluc.exe
  "C:\Users\Admin\woeluc.exe"
  2⤵
  - Modifies visiblity of hidden/system files in Explorer
  - Executes dropped EXE
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of SetWindowsHookEx
  PID:4604
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1152 -s 1472
  2⤵
  - Program crash
  PID:2016

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 1152 -ip 1152
1⤵
PID:660

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\woeluc.exe

Filesize
84KB

MD5
e163cffad1d5405c9b7b9e64948034f8

SHA1
cd56762784cc4020ce5d670ffb3c88bbef1b0ae0

SHA256
9cfe159d993461e381f10dd4ef547c42321b65b19150e2089dd20361325ea0ad

SHA512
af49a22125de8d19ece4ac2ffd194efcd28e9af2610e52b6ad3f1ddbe1b1a06238cf298b8211b1e704047253ec55f298ce8fa1f7ed513d40deccdf5824c27f59

Download Submit
memory/1152-0-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/1152-37-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/4604-33-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/4604-38-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download