Analysis
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max time kernel
149s -
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
16/10/2024, 00:29
Static task
static1
Behavioral task
behavioral1
Sample
55d72e541ff5d50ada69084e6a7746784caf8569e7e1576a71d3d03ea335ca5c.exe
Resource
win7-20241010-en
Behavioral task
behavioral2
Sample
55d72e541ff5d50ada69084e6a7746784caf8569e7e1576a71d3d03ea335ca5c.exe
Resource
win10v2004-20241007-en
General
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Target
55d72e541ff5d50ada69084e6a7746784caf8569e7e1576a71d3d03ea335ca5c.exe
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Size
414KB
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MD5
aea5688722a46cecd76528b7796ec87d
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SHA1
d03bf13043d96747e4b8dc01d05384e9fdbbbbc3
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SHA256
55d72e541ff5d50ada69084e6a7746784caf8569e7e1576a71d3d03ea335ca5c
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SHA512
2b3520efbd81bcfdd317c8f435e8dd0ab905169f581cdcf83befc5a9a1d145b3e31c799e3342a6bc7149af7a2262d2728efb8b1d39edec09937f9eec6563f124
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SSDEEP
6144:3w9D91dOrcN3ZGXNYFNmIkYvUIelVjjVtGRyFH4X:gtRfJcNYFNm8UhlZGseX
Malware Config
Signatures
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Blocklisted process makes network request 8 IoCs
flow pid Process 25 4480 rundll32.exe 34 4480 rundll32.exe 35 4480 rundll32.exe 36 4480 rundll32.exe 50 4480 rundll32.exe 51 4480 rundll32.exe 59 4480 rundll32.exe 73 4480 rundll32.exe -
Deletes itself 1 IoCs
pid Process 3068 ukoya.exe -
Executes dropped EXE 1 IoCs
pid Process 3068 ukoya.exe -
Loads dropped DLL 1 IoCs
pid Process 4480 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
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Dotx = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\Program Files\\nipyz\\pzvmf.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.
description ioc Process 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) \??\x: rundll32.exe File opened (read-only) \??\a: rundll32.exe File opened (read-only) \??\e: rundll32.exe File opened (read-only) \??\l: rundll32.exe File opened (read-only) \??\o: rundll32.exe File opened (read-only) \??\z: 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) \??\h: rundll32.exe File opened (read-only) \??\i: rundll32.exe File opened (read-only) \??\k: rundll32.exe File opened (read-only) \??\n: rundll32.exe File opened (read-only) \??\b: rundll32.exe File opened (read-only) \??\m: rundll32.exe File opened (read-only) \??\q: rundll32.exe File opened (read-only) \??\y: rundll32.exe File opened (read-only) \??\g: rundll32.exe File opened (read-only) \??\j: rundll32.exe File opened (read-only) \??\v: 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.
description ioc Process File opened for modification \??\PHYSICALDRIVE0 rundll32.exe -
Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
pid Process 4480 rundll32.exe -
Drops file in Program Files directory 2 IoCs
description ioc Process File opened for modification \??\c:\Program Files\nipyz ukoya.exe File created \??\c:\Program Files\nipyz\pzvmf.dll ukoya.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.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 55d72e541ff5d50ada69084e6a7746784caf8569e7e1576a71d3d03ea335ca5c.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language cmd.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language PING.EXE Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language ukoya.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language rundll32.exe -
System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs
Adversaries may check for Internet connectivity on compromised systems.
pid Process 3608 cmd.exe 3716 PING.EXE -
Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
description 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
pid Process 3716 PING.EXE -
Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 4480 rundll32.exe 4480 rundll32.exe 4480 rundll32.exe 4480 rundll32.exe 4480 rundll32.exe 4480 rundll32.exe 4480 rundll32.exe 4480 rundll32.exe 4480 rundll32.exe 4480 rundll32.exe 4480 rundll32.exe 4480 rundll32.exe 4480 rundll32.exe 4480 rundll32.exe 4480 rundll32.exe 4480 rundll32.exe 4480 rundll32.exe 4480 rundll32.exe 4480 rundll32.exe 4480 rundll32.exe 4480 rundll32.exe 4480 rundll32.exe 4480 rundll32.exe 4480 rundll32.exe 4480 rundll32.exe 4480 rundll32.exe 4480 rundll32.exe 4480 rundll32.exe 4480 rundll32.exe 4480 rundll32.exe 4480 rundll32.exe 4480 rundll32.exe 4480 rundll32.exe 4480 rundll32.exe 4480 rundll32.exe 4480 rundll32.exe 4480 rundll32.exe 4480 rundll32.exe 4480 rundll32.exe 4480 rundll32.exe 4480 rundll32.exe 4480 rundll32.exe 4480 rundll32.exe 4480 rundll32.exe 4480 rundll32.exe 4480 rundll32.exe 4480 rundll32.exe 4480 rundll32.exe 4480 rundll32.exe 4480 rundll32.exe 4480 rundll32.exe 4480 rundll32.exe 4480 rundll32.exe 4480 rundll32.exe 4480 rundll32.exe 4480 rundll32.exe 4480 rundll32.exe 4480 rundll32.exe 4480 rundll32.exe 4480 rundll32.exe 4480 rundll32.exe 4480 rundll32.exe 4480 rundll32.exe 4480 rundll32.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 4480 rundll32.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 832 55d72e541ff5d50ada69084e6a7746784caf8569e7e1576a71d3d03ea335ca5c.exe 3068 ukoya.exe -
Suspicious use of WriteProcessMemory 12 IoCs
description pid Process procid_target PID 832 wrote to memory of 3608 832 55d72e541ff5d50ada69084e6a7746784caf8569e7e1576a71d3d03ea335ca5c.exe 85 PID 832 wrote to memory of 3608 832 55d72e541ff5d50ada69084e6a7746784caf8569e7e1576a71d3d03ea335ca5c.exe 85 PID 832 wrote to memory of 3608 832 55d72e541ff5d50ada69084e6a7746784caf8569e7e1576a71d3d03ea335ca5c.exe 85 PID 3608 wrote to memory of 3716 3608 cmd.exe 87 PID 3608 wrote to memory of 3716 3608 cmd.exe 87 PID 3608 wrote to memory of 3716 3608 cmd.exe 87 PID 3608 wrote to memory of 3068 3608 cmd.exe 90 PID 3608 wrote to memory of 3068 3608 cmd.exe 90 PID 3608 wrote to memory of 3068 3608 cmd.exe 90 PID 3068 wrote to memory of 4480 3068 ukoya.exe 91 PID 3068 wrote to memory of 4480 3068 ukoya.exe 91 PID 3068 wrote to memory of 4480 3068 ukoya.exe 91
Processes
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C:\Users\Admin\AppData\Local\Temp\55d72e541ff5d50ada69084e6a7746784caf8569e7e1576a71d3d03ea335ca5c.exe"C:\Users\Admin\AppData\Local\Temp\55d72e541ff5d50ada69084e6a7746784caf8569e7e1576a71d3d03ea335ca5c.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:832 -
C:\Windows\SysWOW64\cmd.execmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\ukoya.exe "C:\Users\Admin\AppData\Local\Temp\55d72e541ff5d50ada69084e6a7746784caf8569e7e1576a71d3d03ea335ca5c.exe"2⤵
- System Location Discovery: System Language Discovery
- System Network Configuration Discovery: Internet Connection Discovery
- Suspicious use of WriteProcessMemory
PID:3608 -
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:3716
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C:\Users\Admin\AppData\Local\Temp\ukoya.exeC:\Users\Admin\AppData\Local\Temp\\ukoya.exe "C:\Users\Admin\AppData\Local\Temp\55d72e541ff5d50ada69084e6a7746784caf8569e7e1576a71d3d03ea335ca5c.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:3068 -
\??\c:\windows\SysWOW64\rundll32.exec:\windows\system32\rundll32.exe "c:\Program Files\nipyz\pzvmf.dll",Verify C:\Users\Admin\AppData\Local\Temp\ukoya.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:4480
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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
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Downloads
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Filesize
415KB
MD5cc8d46b403a9b940be027b45189e4636
SHA13f95905e6b2420618156099871868529ddfc798c
SHA25671c02316defde871368d1084d0fa0eb03d7a84ffe697ff9fe18d460b88f78437
SHA512a7ca7d232ef05f1ffea10e10e3396b96cebaf7cdb4b70fb57950719d21ddbcb0311ec3d6f37643027a46c68d44ebad3e39394bf32bb231bb31c460be6246c147
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Filesize
228KB
MD5935ca88d0dd1afd784a372e7dd3c6489
SHA18f60743a13967284a53786edea827b0f6f37aa65
SHA25629bd7931118b13a2aed8c4888623b2d419fc70f01665fba405c704db5e46bd3e
SHA512667ae817c2f598e31e4a2609591a1f561ca506f47dfc87f2e416654f2fcc192f9bafbd393458c9c1b7e87ed40ba06ccd8b5e634ed9ddf12a1b857ecb22038cb5