Analysis
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max time kernel
150s -
max time network
136s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
10-11-2024 01:24
Static task
static1
Behavioral task
behavioral1
Sample
8408bd03b4305c3f9e8917541a2f06d789003acebca3332929630000301bedba.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
8408bd03b4305c3f9e8917541a2f06d789003acebca3332929630000301bedba.exe
Resource
win10v2004-20241007-en
General
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Target
8408bd03b4305c3f9e8917541a2f06d789003acebca3332929630000301bedba.exe
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Size
414KB
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MD5
456d433746127fea587949fe72d79c4e
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SHA1
3e710e3728e5754f1ad3c6386ec630df74834627
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SHA256
8408bd03b4305c3f9e8917541a2f06d789003acebca3332929630000301bedba
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SHA512
41f98ab230c4aa45c47e434c02e26e147ab67b787e9719e821ec5222f5d4eafd1b6bcc80f0e439c609d0d2e82e08d0a1b7381a209d6363f66acc2b14a776cc7e
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SSDEEP
6144:3w9D91dOrcN3ZGXNYFNmIkYvUIelVjjVtGRyFH4:gtRfJcNYFNm8UhlZGse
Malware Config
Signatures
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Blocklisted process makes network request 8 IoCs
Processes:
rundll32.exeflow pid process 15 4620 rundll32.exe 23 4620 rundll32.exe 24 4620 rundll32.exe 25 4620 rundll32.exe 39 4620 rundll32.exe 40 4620 rundll32.exe 44 4620 rundll32.exe 50 4620 rundll32.exe -
Deletes itself 1 IoCs
Processes:
wssnq.exepid process 932 wssnq.exe -
Executes dropped EXE 1 IoCs
Processes:
wssnq.exepid process 932 wssnq.exe -
Loads dropped DLL 1 IoCs
Processes:
rundll32.exepid process 4620 rundll32.exe -
Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Adds Run key to start application 2 TTPs 1 IoCs
Processes:
rundll32.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Dotx = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\Program Files\\yrese\\ocuex.dll\",Verify" rundll32.exe -
Enumerates connected drives 3 TTPs 23 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
Processes:
rundll32.exedescription ioc process File opened (read-only) \??\n: rundll32.exe File opened (read-only) \??\a: rundll32.exe File opened (read-only) \??\h: rundll32.exe File opened (read-only) \??\m: rundll32.exe File opened (read-only) \??\o: rundll32.exe File opened (read-only) \??\p: rundll32.exe File opened (read-only) \??\r: rundll32.exe File opened (read-only) \??\w: rundll32.exe File opened (read-only) \??\e: rundll32.exe File opened (read-only) \??\g: rundll32.exe File opened (read-only) \??\q: rundll32.exe File opened (read-only) \??\j: rundll32.exe File opened (read-only) \??\k: rundll32.exe File opened (read-only) \??\l: rundll32.exe File opened (read-only) \??\s: rundll32.exe File opened (read-only) \??\t: rundll32.exe File opened (read-only) \??\u: rundll32.exe File opened (read-only) \??\v: rundll32.exe File opened (read-only) \??\x: rundll32.exe File opened (read-only) \??\b: rundll32.exe File opened (read-only) \??\i: rundll32.exe File opened (read-only) \??\y: rundll32.exe File opened (read-only) \??\z: rundll32.exe -
Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs
Bootkits write to the MBR to gain persistence at a level below the operating system.
Processes:
rundll32.exedescription ioc process File opened for modification \??\PHYSICALDRIVE0 rundll32.exe -
Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
Processes:
rundll32.exepid process 4620 rundll32.exe -
Drops file in Program Files directory 2 IoCs
Processes:
wssnq.exedescription ioc process File opened for modification \??\c:\Program Files\yrese wssnq.exe File created \??\c:\Program Files\yrese\ocuex.dll wssnq.exe -
System Location Discovery: System Language Discovery 1 TTPs 5 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
Processes:
wssnq.exerundll32.exe8408bd03b4305c3f9e8917541a2f06d789003acebca3332929630000301bedba.execmd.exePING.EXEdescription ioc process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language wssnq.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language rundll32.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 8408bd03b4305c3f9e8917541a2f06d789003acebca3332929630000301bedba.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language cmd.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language PING.EXE -
System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs
Adversaries may check for Internet connectivity on compromised systems.
Processes:
cmd.exePING.EXEpid process 4844 cmd.exe 4080 PING.EXE -
Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
rundll32.exedescription ioc process Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString rundll32.exe -
Runs ping.exe 1 TTPs 1 IoCs
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Suspicious behavior: EnumeratesProcesses 64 IoCs
Processes:
rundll32.exepid process 4620 rundll32.exe 4620 rundll32.exe 4620 rundll32.exe 4620 rundll32.exe 4620 rundll32.exe 4620 rundll32.exe 4620 rundll32.exe 4620 rundll32.exe 4620 rundll32.exe 4620 rundll32.exe 4620 rundll32.exe 4620 rundll32.exe 4620 rundll32.exe 4620 rundll32.exe 4620 rundll32.exe 4620 rundll32.exe 4620 rundll32.exe 4620 rundll32.exe 4620 rundll32.exe 4620 rundll32.exe 4620 rundll32.exe 4620 rundll32.exe 4620 rundll32.exe 4620 rundll32.exe 4620 rundll32.exe 4620 rundll32.exe 4620 rundll32.exe 4620 rundll32.exe 4620 rundll32.exe 4620 rundll32.exe 4620 rundll32.exe 4620 rundll32.exe 4620 rundll32.exe 4620 rundll32.exe 4620 rundll32.exe 4620 rundll32.exe 4620 rundll32.exe 4620 rundll32.exe 4620 rundll32.exe 4620 rundll32.exe 4620 rundll32.exe 4620 rundll32.exe 4620 rundll32.exe 4620 rundll32.exe 4620 rundll32.exe 4620 rundll32.exe 4620 rundll32.exe 4620 rundll32.exe 4620 rundll32.exe 4620 rundll32.exe 4620 rundll32.exe 4620 rundll32.exe 4620 rundll32.exe 4620 rundll32.exe 4620 rundll32.exe 4620 rundll32.exe 4620 rundll32.exe 4620 rundll32.exe 4620 rundll32.exe 4620 rundll32.exe 4620 rundll32.exe 4620 rundll32.exe 4620 rundll32.exe 4620 rundll32.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
rundll32.exedescription pid process Token: SeDebugPrivilege 4620 rundll32.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
Processes:
8408bd03b4305c3f9e8917541a2f06d789003acebca3332929630000301bedba.exewssnq.exepid process 4680 8408bd03b4305c3f9e8917541a2f06d789003acebca3332929630000301bedba.exe 932 wssnq.exe -
Suspicious use of WriteProcessMemory 12 IoCs
Processes:
8408bd03b4305c3f9e8917541a2f06d789003acebca3332929630000301bedba.execmd.exewssnq.exedescription pid process target process PID 4680 wrote to memory of 4844 4680 8408bd03b4305c3f9e8917541a2f06d789003acebca3332929630000301bedba.exe cmd.exe PID 4680 wrote to memory of 4844 4680 8408bd03b4305c3f9e8917541a2f06d789003acebca3332929630000301bedba.exe cmd.exe PID 4680 wrote to memory of 4844 4680 8408bd03b4305c3f9e8917541a2f06d789003acebca3332929630000301bedba.exe cmd.exe PID 4844 wrote to memory of 4080 4844 cmd.exe PING.EXE PID 4844 wrote to memory of 4080 4844 cmd.exe PING.EXE PID 4844 wrote to memory of 4080 4844 cmd.exe PING.EXE PID 4844 wrote to memory of 932 4844 cmd.exe wssnq.exe PID 4844 wrote to memory of 932 4844 cmd.exe wssnq.exe PID 4844 wrote to memory of 932 4844 cmd.exe wssnq.exe PID 932 wrote to memory of 4620 932 wssnq.exe rundll32.exe PID 932 wrote to memory of 4620 932 wssnq.exe rundll32.exe PID 932 wrote to memory of 4620 932 wssnq.exe rundll32.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\8408bd03b4305c3f9e8917541a2f06d789003acebca3332929630000301bedba.exe"C:\Users\Admin\AppData\Local\Temp\8408bd03b4305c3f9e8917541a2f06d789003acebca3332929630000301bedba.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4680 -
C:\Windows\SysWOW64\cmd.execmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\wssnq.exe "C:\Users\Admin\AppData\Local\Temp\8408bd03b4305c3f9e8917541a2f06d789003acebca3332929630000301bedba.exe"2⤵
- System Location Discovery: System Language Discovery
- System Network Configuration Discovery: Internet Connection Discovery
- Suspicious use of WriteProcessMemory
PID:4844 -
C:\Windows\SysWOW64\PING.EXEping 127.0.0.1 -n 23⤵
- System Location Discovery: System Language Discovery
- System Network Configuration Discovery: Internet Connection Discovery
- Runs ping.exe
PID:4080 -
C:\Users\Admin\AppData\Local\Temp\wssnq.exeC:\Users\Admin\AppData\Local\Temp\\wssnq.exe "C:\Users\Admin\AppData\Local\Temp\8408bd03b4305c3f9e8917541a2f06d789003acebca3332929630000301bedba.exe"3⤵
- Deletes itself
- Executes dropped EXE
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:932 -
\??\c:\windows\SysWOW64\rundll32.exec:\windows\system32\rundll32.exe "c:\Program Files\yrese\ocuex.dll",Verify C:\Users\Admin\AppData\Local\Temp\wssnq.exe4⤵
- Blocklisted process makes network request
- Loads dropped DLL
- Adds Run key to start application
- Enumerates connected drives
- Writes to the Master Boot Record (MBR)
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4620
Network
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Pre-OS Boot
1Bootkit
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
1Credentials In Files
1Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
414KB
MD5815d51f0ea3fd573720425a23ac17766
SHA1c6cfa5dc046fd1daff22a278be08a15f6e50bf88
SHA2567595d4ef16cad57966ac45acc39b231e1eda86ef2c353f9daee0bb2276673541
SHA512a850d5f64b2087da9fb532fd83c964ce462ca82f3958de2b5ae0304b404b1c530371699c9a0005256ab21559218395475c88c21f731aec229b78b1e278a68570
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Filesize
228KB
MD5cc7f8ec52b6667038816d8da493d879d
SHA1c1f1e0a9334a724b240a986b6440a34c6f55faf6
SHA256030dafe0c4e3479527f7803144841537ffdde9ab95a5bd92bd2261d0f3448d9f
SHA512b59a7b15760f5f6574de644a23164a905ea387aed002c9a72566bae1d4c0038246f6fcfbbe6610389bfe6aa9f198fa1e541f85957323eff4963b1fbb4cd2f694