Analysis
-
max time kernel
149s -
max time network
150s -
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 01:27
Static task
static1
Behavioral task
behavioral1
Sample
e84af8607a3effb4c29eeee87926c47ce1f2867d88db46f2267a62d2b62b5845.exe
Resource
win7-20241010-en
Behavioral task
behavioral2
Sample
e84af8607a3effb4c29eeee87926c47ce1f2867d88db46f2267a62d2b62b5845.exe
Resource
win10v2004-20241007-en
General
-
Target
e84af8607a3effb4c29eeee87926c47ce1f2867d88db46f2267a62d2b62b5845.exe
-
Size
410KB
-
MD5
42ded6fecf6e261cae9b73ce58011db7
-
SHA1
579b5303fb2c127f8169936aa2e11dc5323c9afa
-
SHA256
e84af8607a3effb4c29eeee87926c47ce1f2867d88db46f2267a62d2b62b5845
-
SHA512
25d9eea0d589bf2d0f95723f791635ad8a4935048e53b7ec3416a10549120b2c8c874ff41c3861f4f987716bc0f75c5ac27a807c30f3e16d07a0d26578097d8a
-
SSDEEP
6144:3w9D91dOrcN3ZGXNYFNmIkYvUIelVjjVtGRyFH4:gtRfJcNYFNm8UhlZGse
Malware Config
Signatures
-
Blocklisted process makes network request 8 IoCs
Processes:
rundll32.exeflow pid process 14 3992 rundll32.exe 21 3992 rundll32.exe 23 3992 rundll32.exe 22 3992 rundll32.exe 37 3992 rundll32.exe 38 3992 rundll32.exe 41 3992 rundll32.exe 46 3992 rundll32.exe -
Deletes itself 1 IoCs
Processes:
ivzft.exepid process 244 ivzft.exe -
Executes dropped EXE 1 IoCs
Processes:
ivzft.exepid process 244 ivzft.exe -
Loads dropped DLL 1 IoCs
Processes:
rundll32.exepid process 3992 rundll32.exe -
Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
-
Adds Run key to start application 2 TTPs 1 IoCs
Processes:
rundll32.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Dotx = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\Program Files\\ikurvyr\\wjnnz.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) \??\y: rundll32.exe File opened (read-only) \??\k: rundll32.exe File opened (read-only) \??\s: rundll32.exe File opened (read-only) \??\j: rundll32.exe File opened (read-only) \??\g: rundll32.exe File opened (read-only) \??\i: rundll32.exe File opened (read-only) \??\l: rundll32.exe File opened (read-only) \??\o: rundll32.exe File opened (read-only) \??\p: rundll32.exe File opened (read-only) \??\t: rundll32.exe File opened (read-only) \??\v: 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) \??\n: rundll32.exe File opened (read-only) \??\q: rundll32.exe File opened (read-only) \??\r: rundll32.exe File opened (read-only) \??\u: rundll32.exe File opened (read-only) \??\w: rundll32.exe File opened (read-only) \??\b: rundll32.exe File opened (read-only) \??\e: rundll32.exe File opened (read-only) \??\x: 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 3992 rundll32.exe -
Drops file in Program Files directory 2 IoCs
Processes:
ivzft.exedescription ioc process File opened for modification \??\c:\Program Files\ikurvyr ivzft.exe File created \??\c:\Program Files\ikurvyr\wjnnz.dll ivzft.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:
ivzft.exerundll32.exee84af8607a3effb4c29eeee87926c47ce1f2867d88db46f2267a62d2b62b5845.execmd.exePING.EXEdescription ioc process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language ivzft.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language rundll32.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language e84af8607a3effb4c29eeee87926c47ce1f2867d88db46f2267a62d2b62b5845.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 4744 cmd.exe 3892 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
-
Suspicious behavior: EnumeratesProcesses 64 IoCs
Processes:
rundll32.exepid process 3992 rundll32.exe 3992 rundll32.exe 3992 rundll32.exe 3992 rundll32.exe 3992 rundll32.exe 3992 rundll32.exe 3992 rundll32.exe 3992 rundll32.exe 3992 rundll32.exe 3992 rundll32.exe 3992 rundll32.exe 3992 rundll32.exe 3992 rundll32.exe 3992 rundll32.exe 3992 rundll32.exe 3992 rundll32.exe 3992 rundll32.exe 3992 rundll32.exe 3992 rundll32.exe 3992 rundll32.exe 3992 rundll32.exe 3992 rundll32.exe 3992 rundll32.exe 3992 rundll32.exe 3992 rundll32.exe 3992 rundll32.exe 3992 rundll32.exe 3992 rundll32.exe 3992 rundll32.exe 3992 rundll32.exe 3992 rundll32.exe 3992 rundll32.exe 3992 rundll32.exe 3992 rundll32.exe 3992 rundll32.exe 3992 rundll32.exe 3992 rundll32.exe 3992 rundll32.exe 3992 rundll32.exe 3992 rundll32.exe 3992 rundll32.exe 3992 rundll32.exe 3992 rundll32.exe 3992 rundll32.exe 3992 rundll32.exe 3992 rundll32.exe 3992 rundll32.exe 3992 rundll32.exe 3992 rundll32.exe 3992 rundll32.exe 3992 rundll32.exe 3992 rundll32.exe 3992 rundll32.exe 3992 rundll32.exe 3992 rundll32.exe 3992 rundll32.exe 3992 rundll32.exe 3992 rundll32.exe 3992 rundll32.exe 3992 rundll32.exe 3992 rundll32.exe 3992 rundll32.exe 3992 rundll32.exe 3992 rundll32.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
rundll32.exedescription pid process Token: SeDebugPrivilege 3992 rundll32.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
Processes:
e84af8607a3effb4c29eeee87926c47ce1f2867d88db46f2267a62d2b62b5845.exeivzft.exepid process 4972 e84af8607a3effb4c29eeee87926c47ce1f2867d88db46f2267a62d2b62b5845.exe 244 ivzft.exe -
Suspicious use of WriteProcessMemory 12 IoCs
Processes:
e84af8607a3effb4c29eeee87926c47ce1f2867d88db46f2267a62d2b62b5845.execmd.exeivzft.exedescription pid process target process PID 4972 wrote to memory of 4744 4972 e84af8607a3effb4c29eeee87926c47ce1f2867d88db46f2267a62d2b62b5845.exe cmd.exe PID 4972 wrote to memory of 4744 4972 e84af8607a3effb4c29eeee87926c47ce1f2867d88db46f2267a62d2b62b5845.exe cmd.exe PID 4972 wrote to memory of 4744 4972 e84af8607a3effb4c29eeee87926c47ce1f2867d88db46f2267a62d2b62b5845.exe cmd.exe PID 4744 wrote to memory of 3892 4744 cmd.exe PING.EXE PID 4744 wrote to memory of 3892 4744 cmd.exe PING.EXE PID 4744 wrote to memory of 3892 4744 cmd.exe PING.EXE PID 4744 wrote to memory of 244 4744 cmd.exe ivzft.exe PID 4744 wrote to memory of 244 4744 cmd.exe ivzft.exe PID 4744 wrote to memory of 244 4744 cmd.exe ivzft.exe PID 244 wrote to memory of 3992 244 ivzft.exe rundll32.exe PID 244 wrote to memory of 3992 244 ivzft.exe rundll32.exe PID 244 wrote to memory of 3992 244 ivzft.exe rundll32.exe
Processes
-
C:\Users\Admin\AppData\Local\Temp\e84af8607a3effb4c29eeee87926c47ce1f2867d88db46f2267a62d2b62b5845.exe"C:\Users\Admin\AppData\Local\Temp\e84af8607a3effb4c29eeee87926c47ce1f2867d88db46f2267a62d2b62b5845.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4972 -
C:\Windows\SysWOW64\cmd.execmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\ivzft.exe "C:\Users\Admin\AppData\Local\Temp\e84af8607a3effb4c29eeee87926c47ce1f2867d88db46f2267a62d2b62b5845.exe"2⤵
- System Location Discovery: System Language Discovery
- System Network Configuration Discovery: Internet Connection Discovery
- Suspicious use of WriteProcessMemory
PID:4744 -
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:3892 -
C:\Users\Admin\AppData\Local\Temp\ivzft.exeC:\Users\Admin\AppData\Local\Temp\\ivzft.exe "C:\Users\Admin\AppData\Local\Temp\e84af8607a3effb4c29eeee87926c47ce1f2867d88db46f2267a62d2b62b5845.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:244 -
\??\c:\windows\SysWOW64\rundll32.exec:\windows\system32\rundll32.exe "c:\Program Files\ikurvyr\wjnnz.dll",Verify C:\Users\Admin\AppData\Local\Temp\ivzft.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:3992
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
-
Filesize
410KB
MD5d08eee4a8460d9c92780c4360921f35f
SHA1a6e3cd8442d030cba03daeea21f4e2ab7aa16a46
SHA256f206fda692c2e15751d8e61e4fe55e938ff9c775215094979c96e19ff07c626e
SHA512f1883171c6d98cff4e27ffbf71776a48708122abafe6ca5c6883b2b65e035dd705a907288be69eba39ccd7e02d5a22af06689d0e338e4548f82dd7f1242b8a5a
-
Filesize
228KB
MD5fa5b53d0f6597efc233f23b06d9be508
SHA1091979ab3072839272c36d3f240123ecda6325e7
SHA2564325197d1bf397aefcd445719aad8b6b0a56f7e6375bfa60605660027959a07e
SHA512509f1f74adf5cb3a59953109901008f9d108ace00ac1280d4e5d9b46ae3877f6c5ce0e14c3fc7909632eeaa6a4b6faa178f66c51d6a33fd2e847fff9d76a7058