Analysis
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max time kernel
149s -
max time network
144s -
platform
windows7_x64 -
resource
win7-20240220-en -
resource tags
arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system -
submitted
21-04-2024 05:14
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
7576a800e85b76777146dd52b8b78cbde9f5f7a734f2771f2eb90ae80b027096.exe
Resource
win7-20240220-en
windows7-x64
16 signatures
150 seconds
Behavioral task
behavioral2
Sample
7576a800e85b76777146dd52b8b78cbde9f5f7a734f2771f2eb90ae80b027096.exe
Resource
win10v2004-20240412-en
windows10-2004-x64
16 signatures
150 seconds
General
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Target
7576a800e85b76777146dd52b8b78cbde9f5f7a734f2771f2eb90ae80b027096.exe
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Size
404KB
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MD5
6808748746348fdcabf4b6621da83793
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SHA1
dd8ad45fd81ac59a951a050425b7cabd52adb63e
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SHA256
7576a800e85b76777146dd52b8b78cbde9f5f7a734f2771f2eb90ae80b027096
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SHA512
fc474060d9cb39928ef365728990c60b1e1ed59b059ce266ab2788fe5462f7f9beba8570944e882a6aaeaecbbf866add5dadedd387d54aabdb00b56bfcfc2351
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SSDEEP
6144:3w9D91dOrcN3ZGXNYFNmIkYvUIelVjjVtGRyFH4R:gtRfJcNYFNm8UhlZGseR
Score
8/10
Malware Config
Signatures
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Blocklisted process makes network request 10 IoCs
flow pid Process 3 2012 rundll32.exe 5 2012 rundll32.exe 8 2012 rundll32.exe 9 2012 rundll32.exe 10 2012 rundll32.exe 13 2012 rundll32.exe 14 2012 rundll32.exe 15 2012 rundll32.exe 17 2012 rundll32.exe 18 2012 rundll32.exe -
Deletes itself 1 IoCs
pid Process 1728 mczipwj.exe -
Executes dropped EXE 1 IoCs
pid Process 1728 mczipwj.exe -
Loads dropped DLL 6 IoCs
pid Process 2296 cmd.exe 2296 cmd.exe 2012 rundll32.exe 2012 rundll32.exe 2012 rundll32.exe 2012 rundll32.exe -
Reads user/profile data of web browsers 2 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-1-5-21-2721934792-624042501-2768869379-1000\Software\Microsoft\Windows\CurrentVersion\Run\Dotx = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\Program Files\\evskhhe\\nigok.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) \??\i: rundll32.exe File opened (read-only) \??\n: rundll32.exe File opened (read-only) \??\p: rundll32.exe File opened (read-only) \??\a: rundll32.exe File opened (read-only) \??\b: rundll32.exe File opened (read-only) \??\e: rundll32.exe File opened (read-only) \??\g: rundll32.exe File opened (read-only) \??\h: rundll32.exe File opened (read-only) \??\r: rundll32.exe File opened (read-only) \??\t: rundll32.exe File opened (read-only) \??\u: rundll32.exe File opened (read-only) \??\x: rundll32.exe File opened (read-only) \??\l: rundll32.exe File opened (read-only) \??\o: rundll32.exe File opened (read-only) \??\s: rundll32.exe File opened (read-only) \??\v: rundll32.exe File opened (read-only) \??\z: rundll32.exe File opened (read-only) \??\y: rundll32.exe File opened (read-only) \??\j: rundll32.exe File opened (read-only) \??\k: rundll32.exe File opened (read-only) \??\m: rundll32.exe File opened (read-only) \??\q: rundll32.exe File opened (read-only) \??\w: 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 2012 rundll32.exe -
Drops file in Program Files directory 2 IoCs
description ioc Process File created \??\c:\Program Files\evskhhe\nigok.dll mczipwj.exe File opened for modification \??\c:\Program Files\evskhhe mczipwj.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 2352 PING.EXE -
Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 2012 rundll32.exe 2012 rundll32.exe 2012 rundll32.exe 2012 rundll32.exe 2012 rundll32.exe 2012 rundll32.exe 2012 rundll32.exe 2012 rundll32.exe 2012 rundll32.exe 2012 rundll32.exe 2012 rundll32.exe 2012 rundll32.exe 2012 rundll32.exe 2012 rundll32.exe 2012 rundll32.exe 2012 rundll32.exe 2012 rundll32.exe 2012 rundll32.exe 2012 rundll32.exe 2012 rundll32.exe 2012 rundll32.exe 2012 rundll32.exe 2012 rundll32.exe 2012 rundll32.exe 2012 rundll32.exe 2012 rundll32.exe 2012 rundll32.exe 2012 rundll32.exe 2012 rundll32.exe 2012 rundll32.exe 2012 rundll32.exe 2012 rundll32.exe 2012 rundll32.exe 2012 rundll32.exe 2012 rundll32.exe 2012 rundll32.exe 2012 rundll32.exe 2012 rundll32.exe 2012 rundll32.exe 2012 rundll32.exe 2012 rundll32.exe 2012 rundll32.exe 2012 rundll32.exe 2012 rundll32.exe 2012 rundll32.exe 2012 rundll32.exe 2012 rundll32.exe 2012 rundll32.exe 2012 rundll32.exe 2012 rundll32.exe 2012 rundll32.exe 2012 rundll32.exe 2012 rundll32.exe 2012 rundll32.exe 2012 rundll32.exe 2012 rundll32.exe 2012 rundll32.exe 2012 rundll32.exe 2012 rundll32.exe 2012 rundll32.exe 2012 rundll32.exe 2012 rundll32.exe 2012 rundll32.exe 2012 rundll32.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 2012 rundll32.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 2192 7576a800e85b76777146dd52b8b78cbde9f5f7a734f2771f2eb90ae80b027096.exe 1728 mczipwj.exe -
Suspicious use of WriteProcessMemory 19 IoCs
description pid Process procid_target PID 2192 wrote to memory of 2296 2192 7576a800e85b76777146dd52b8b78cbde9f5f7a734f2771f2eb90ae80b027096.exe 28 PID 2192 wrote to memory of 2296 2192 7576a800e85b76777146dd52b8b78cbde9f5f7a734f2771f2eb90ae80b027096.exe 28 PID 2192 wrote to memory of 2296 2192 7576a800e85b76777146dd52b8b78cbde9f5f7a734f2771f2eb90ae80b027096.exe 28 PID 2192 wrote to memory of 2296 2192 7576a800e85b76777146dd52b8b78cbde9f5f7a734f2771f2eb90ae80b027096.exe 28 PID 2296 wrote to memory of 2352 2296 cmd.exe 30 PID 2296 wrote to memory of 2352 2296 cmd.exe 30 PID 2296 wrote to memory of 2352 2296 cmd.exe 30 PID 2296 wrote to memory of 2352 2296 cmd.exe 30 PID 2296 wrote to memory of 1728 2296 cmd.exe 31 PID 2296 wrote to memory of 1728 2296 cmd.exe 31 PID 2296 wrote to memory of 1728 2296 cmd.exe 31 PID 2296 wrote to memory of 1728 2296 cmd.exe 31 PID 1728 wrote to memory of 2012 1728 mczipwj.exe 32 PID 1728 wrote to memory of 2012 1728 mczipwj.exe 32 PID 1728 wrote to memory of 2012 1728 mczipwj.exe 32 PID 1728 wrote to memory of 2012 1728 mczipwj.exe 32 PID 1728 wrote to memory of 2012 1728 mczipwj.exe 32 PID 1728 wrote to memory of 2012 1728 mczipwj.exe 32 PID 1728 wrote to memory of 2012 1728 mczipwj.exe 32
Processes
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C:\Users\Admin\AppData\Local\Temp\7576a800e85b76777146dd52b8b78cbde9f5f7a734f2771f2eb90ae80b027096.exe"C:\Users\Admin\AppData\Local\Temp\7576a800e85b76777146dd52b8b78cbde9f5f7a734f2771f2eb90ae80b027096.exe"1⤵
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2192 -
C:\Windows\SysWOW64\cmd.execmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\mczipwj.exe "C:\Users\Admin\AppData\Local\Temp\7576a800e85b76777146dd52b8b78cbde9f5f7a734f2771f2eb90ae80b027096.exe"2⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2296 -
C:\Windows\SysWOW64\PING.EXEping 127.0.0.1 -n 23⤵
- Runs ping.exe
PID:2352
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C:\Users\Admin\AppData\Local\Temp\mczipwj.exeC:\Users\Admin\AppData\Local\Temp\\mczipwj.exe "C:\Users\Admin\AppData\Local\Temp\7576a800e85b76777146dd52b8b78cbde9f5f7a734f2771f2eb90ae80b027096.exe"3⤵
- Deletes itself
- Executes dropped EXE
- Drops file in Program Files directory
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1728 -
\??\c:\windows\SysWOW64\rundll32.exec:\windows\system32\rundll32.exe "c:\Program Files\evskhhe\nigok.dll",Verify C:\Users\Admin\AppData\Local\Temp\mczipwj.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
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2012
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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
1Replay Monitor
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Downloads
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Filesize
228KB
MD5d0c77923518986dfb80b667c7d09ee0f
SHA11d4f2e5fd15f90fb2b1da807844ff80b9319522c
SHA256da96f8f5948798a1732503a53f075eda6c7b28d63ecfcfdb5a07ad1e3106cf59
SHA512042ad19af2684d91586311d569b453e6bafe2020d78105d6ff77ff089593e6dbc6c4b719f467f8fce40d648a7f8a15b4bc7206513b107e2d9e94d65ef8659bcd
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Filesize
404KB
MD5fe2a38caa39af6943f196fe24f55f6aa
SHA1cb0cf0e46982080291944a936d43ad15178ae00f
SHA2569c337826b3a38d2577e1d9881a21bd4fbc6bd103d99aa3321e64904691bde49b
SHA512243304cce7ca44e74117dcbb27e123c88dbda3bd60d0b6b710c1b52232663ce804e5d29b6162b93628e5d566e13be0fd49761cbfc1d02bca305529019402d752