Analysis
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max time kernel
149s -
max time network
151s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system -
submitted
11-06-2024 15:33
Static task
static1
Behavioral task
behavioral1
Sample
c000a71356f868de34b6a50dfb5bd5f79f71006171645fc8984b100aa373ab0b.exe
Resource
win7-20240508-en
Behavioral task
behavioral2
Sample
c000a71356f868de34b6a50dfb5bd5f79f71006171645fc8984b100aa373ab0b.exe
Resource
win10v2004-20240508-en
General
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Target
c000a71356f868de34b6a50dfb5bd5f79f71006171645fc8984b100aa373ab0b.exe
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Size
407KB
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MD5
2701aca13e64655f8e63d894b0bb53f4
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SHA1
2efd3f99b5ac3bcfe1915513b5549dc04bac854f
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SHA256
c000a71356f868de34b6a50dfb5bd5f79f71006171645fc8984b100aa373ab0b
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SHA512
62f9b9677a11984f6089bf567d2e15fe57cc4cc061b16cfff2be2e93eaa5acd93aef2e26e4a648eff53e99161d29d2aa0522452d92b86ed834d724112c522ed4
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SSDEEP
6144:3w9D91dOrcN3ZGXNYFNmIkYvUIelVjjVtGRyFH4u:gtRfJcNYFNm8UhlZGseu
Malware Config
Signatures
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Blocklisted process makes network request 8 IoCs
Processes:
rundll32.exeflow pid process 2 2096 rundll32.exe 7 2096 rundll32.exe 10 2096 rundll32.exe 9 2096 rundll32.exe 15 2096 rundll32.exe 16 2096 rundll32.exe 18 2096 rundll32.exe 19 2096 rundll32.exe -
Deletes itself 1 IoCs
Processes:
wbbxn.exepid process 1580 wbbxn.exe -
Executes dropped EXE 1 IoCs
Processes:
wbbxn.exepid process 1580 wbbxn.exe -
Loads dropped DLL 1 IoCs
Processes:
rundll32.exepid process 2096 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
Processes:
rundll32.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Dotx = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\Program Files\\azitmh\\ymxte.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) \??\z: rundll32.exe File opened (read-only) \??\k: rundll32.exe File opened (read-only) \??\l: rundll32.exe File opened (read-only) \??\w: rundll32.exe File opened (read-only) \??\r: rundll32.exe File opened (read-only) \??\v: rundll32.exe File opened (read-only) \??\x: rundll32.exe File opened (read-only) \??\e: rundll32.exe 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) \??\h: rundll32.exe File opened (read-only) \??\j: rundll32.exe File opened (read-only) \??\o: rundll32.exe File opened (read-only) \??\m: rundll32.exe File opened (read-only) \??\q: 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) \??\a: rundll32.exe File opened (read-only) \??\b: rundll32.exe File opened (read-only) \??\g: 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 2096 rundll32.exe -
Drops file in Program Files directory 2 IoCs
Processes:
wbbxn.exedescription ioc process File opened for modification \??\c:\Program Files\azitmh wbbxn.exe File created \??\c:\Program Files\azitmh\ymxte.dll wbbxn.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 2096 rundll32.exe 2096 rundll32.exe 2096 rundll32.exe 2096 rundll32.exe 2096 rundll32.exe 2096 rundll32.exe 2096 rundll32.exe 2096 rundll32.exe 2096 rundll32.exe 2096 rundll32.exe 2096 rundll32.exe 2096 rundll32.exe 2096 rundll32.exe 2096 rundll32.exe 2096 rundll32.exe 2096 rundll32.exe 2096 rundll32.exe 2096 rundll32.exe 2096 rundll32.exe 2096 rundll32.exe 2096 rundll32.exe 2096 rundll32.exe 2096 rundll32.exe 2096 rundll32.exe 2096 rundll32.exe 2096 rundll32.exe 2096 rundll32.exe 2096 rundll32.exe 2096 rundll32.exe 2096 rundll32.exe 2096 rundll32.exe 2096 rundll32.exe 2096 rundll32.exe 2096 rundll32.exe 2096 rundll32.exe 2096 rundll32.exe 2096 rundll32.exe 2096 rundll32.exe 2096 rundll32.exe 2096 rundll32.exe 2096 rundll32.exe 2096 rundll32.exe 2096 rundll32.exe 2096 rundll32.exe 2096 rundll32.exe 2096 rundll32.exe 2096 rundll32.exe 2096 rundll32.exe 2096 rundll32.exe 2096 rundll32.exe 2096 rundll32.exe 2096 rundll32.exe 2096 rundll32.exe 2096 rundll32.exe 2096 rundll32.exe 2096 rundll32.exe 2096 rundll32.exe 2096 rundll32.exe 2096 rundll32.exe 2096 rundll32.exe 2096 rundll32.exe 2096 rundll32.exe 2096 rundll32.exe 2096 rundll32.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
rundll32.exedescription pid process Token: SeDebugPrivilege 2096 rundll32.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
Processes:
c000a71356f868de34b6a50dfb5bd5f79f71006171645fc8984b100aa373ab0b.exewbbxn.exepid process 1780 c000a71356f868de34b6a50dfb5bd5f79f71006171645fc8984b100aa373ab0b.exe 1580 wbbxn.exe -
Suspicious use of WriteProcessMemory 12 IoCs
Processes:
c000a71356f868de34b6a50dfb5bd5f79f71006171645fc8984b100aa373ab0b.execmd.exewbbxn.exedescription pid process target process PID 1780 wrote to memory of 4468 1780 c000a71356f868de34b6a50dfb5bd5f79f71006171645fc8984b100aa373ab0b.exe cmd.exe PID 1780 wrote to memory of 4468 1780 c000a71356f868de34b6a50dfb5bd5f79f71006171645fc8984b100aa373ab0b.exe cmd.exe PID 1780 wrote to memory of 4468 1780 c000a71356f868de34b6a50dfb5bd5f79f71006171645fc8984b100aa373ab0b.exe cmd.exe PID 4468 wrote to memory of 1884 4468 cmd.exe PING.EXE PID 4468 wrote to memory of 1884 4468 cmd.exe PING.EXE PID 4468 wrote to memory of 1884 4468 cmd.exe PING.EXE PID 4468 wrote to memory of 1580 4468 cmd.exe wbbxn.exe PID 4468 wrote to memory of 1580 4468 cmd.exe wbbxn.exe PID 4468 wrote to memory of 1580 4468 cmd.exe wbbxn.exe PID 1580 wrote to memory of 2096 1580 wbbxn.exe rundll32.exe PID 1580 wrote to memory of 2096 1580 wbbxn.exe rundll32.exe PID 1580 wrote to memory of 2096 1580 wbbxn.exe rundll32.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\c000a71356f868de34b6a50dfb5bd5f79f71006171645fc8984b100aa373ab0b.exe"C:\Users\Admin\AppData\Local\Temp\c000a71356f868de34b6a50dfb5bd5f79f71006171645fc8984b100aa373ab0b.exe"1⤵
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1780 -
C:\Windows\SysWOW64\cmd.execmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\wbbxn.exe "C:\Users\Admin\AppData\Local\Temp\c000a71356f868de34b6a50dfb5bd5f79f71006171645fc8984b100aa373ab0b.exe"2⤵
- Suspicious use of WriteProcessMemory
PID:4468 -
C:\Windows\SysWOW64\PING.EXEping 127.0.0.1 -n 23⤵
- Runs ping.exe
PID:1884 -
C:\Users\Admin\AppData\Local\Temp\wbbxn.exeC:\Users\Admin\AppData\Local\Temp\\wbbxn.exe "C:\Users\Admin\AppData\Local\Temp\c000a71356f868de34b6a50dfb5bd5f79f71006171645fc8984b100aa373ab0b.exe"3⤵
- Deletes itself
- Executes dropped EXE
- Drops file in Program Files directory
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1580 -
\??\c:\windows\SysWOW64\rundll32.exec:\windows\system32\rundll32.exe "c:\Program Files\azitmh\ymxte.dll",Verify C:\Users\Admin\AppData\Local\Temp\wbbxn.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:2096
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
407KB
MD5bed3a3ed7cb17bb55c8a5e91baba3ed9
SHA12ad7a9805f77a771b8b9f744b63318244919dcbd
SHA25603edb86c05274d600222036585d2461ec6b7f1561006808e6f973c47446a9683
SHA51256532cab5bcfd341861ea8e823bd4930f8e846dfd3ad30a4e8428414acd0479151459ec1359174dd852d2886c0571a79bf4ee4ca1d2835a796b30a1ee0397813
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Filesize
228KB
MD517fb87ef8557e8d7e1521a158fa08c51
SHA11b0f1e567f06d63df4c65aa3abb5689acdbf7923
SHA256207042972d469c69dd56ee83fbd90dfb1be3a871dde1128a9620ce1ea6c57eda
SHA512ca176c450644e78f0866de161b4dd0cffab4bbf822c0268b4b76f95166c31fcd718bf1565b5466e4a809a6f08998ce41c3c4a8786ced45a396d8525427700116