Analysis
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max time kernel
119s -
max time network
120s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
09-11-2024 18:23
Static task
static1
Behavioral task
behavioral1
Sample
4ac2ac952a995a4186deb964a72742a3715d49eb231e63cffb80df77f089a363N.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
4ac2ac952a995a4186deb964a72742a3715d49eb231e63cffb80df77f089a363N.exe
Resource
win10v2004-20241007-en
General
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Target
4ac2ac952a995a4186deb964a72742a3715d49eb231e63cffb80df77f089a363N.exe
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Size
156KB
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MD5
f1e30b5c56068a829be80ab57f0f1090
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SHA1
34d616a76a1b9d96d1a48b27424a77c6701b4c80
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SHA256
4ac2ac952a995a4186deb964a72742a3715d49eb231e63cffb80df77f089a363
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SHA512
26070e1e45f6be2bf4617bc226e4b5e1b72aa68f939fbdbfa7616424d8e2dc6bdf870e3b204be726dab1e8b1b74250ccb77fefc4a7a6e934d3a264146b01609b
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SSDEEP
1536:+fxvtgixq7OstjzjW6ZdjtETzR77i11GAbRp0BGiEA0O0o1n:+HIa6KTdNAbzSGiN0OJ
Malware Config
Signatures
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Blocklisted process makes network request 8 IoCs
Processes:
rundll32.exeflow pid process 16 5020 rundll32.exe 22 5020 rundll32.exe 23 5020 rundll32.exe 24 5020 rundll32.exe 38 5020 rundll32.exe 39 5020 rundll32.exe 42 5020 rundll32.exe 49 5020 rundll32.exe -
Deletes itself 1 IoCs
Processes:
swyxl.exepid process 1996 swyxl.exe -
Executes dropped EXE 1 IoCs
Processes:
swyxl.exepid process 1996 swyxl.exe -
Loads dropped DLL 1 IoCs
Processes:
rundll32.exepid process 5020 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-1-5-21-4050598569-1597076380-177084960-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\EvtMgr = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\mjkczeb\\infmjdn.dll\",GetWindowClass" 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) \??\v: rundll32.exe File opened (read-only) \??\z: rundll32.exe File opened (read-only) \??\a: rundll32.exe File opened (read-only) \??\q: rundll32.exe File opened (read-only) \??\r: rundll32.exe File opened (read-only) \??\s: rundll32.exe File opened (read-only) \??\u: rundll32.exe File opened (read-only) \??\l: rundll32.exe File opened (read-only) \??\m: rundll32.exe File opened (read-only) \??\n: rundll32.exe File opened (read-only) \??\t: 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) \??\k: rundll32.exe File opened (read-only) \??\j: rundll32.exe File opened (read-only) \??\o: rundll32.exe File opened (read-only) \??\p: rundll32.exe File opened (read-only) \??\x: rundll32.exe File opened (read-only) \??\y: rundll32.exe File opened (read-only) \??\g: rundll32.exe File opened (read-only) \??\h: rundll32.exe File opened (read-only) \??\i: 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 -
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:
PING.EXEswyxl.exerundll32.exe4ac2ac952a995a4186deb964a72742a3715d49eb231e63cffb80df77f089a363N.execmd.exedescription ioc process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language PING.EXE Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language swyxl.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language rundll32.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 4ac2ac952a995a4186deb964a72742a3715d49eb231e63cffb80df77f089a363N.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language cmd.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 3888 cmd.exe 468 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 4 IoCs
Processes:
rundll32.exepid process 5020 rundll32.exe 5020 rundll32.exe 5020 rundll32.exe 5020 rundll32.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
rundll32.exedescription pid process Token: SeDebugPrivilege 5020 rundll32.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
Processes:
4ac2ac952a995a4186deb964a72742a3715d49eb231e63cffb80df77f089a363N.exeswyxl.exepid process 900 4ac2ac952a995a4186deb964a72742a3715d49eb231e63cffb80df77f089a363N.exe 1996 swyxl.exe -
Suspicious use of WriteProcessMemory 12 IoCs
Processes:
4ac2ac952a995a4186deb964a72742a3715d49eb231e63cffb80df77f089a363N.execmd.exeswyxl.exedescription pid process target process PID 900 wrote to memory of 3888 900 4ac2ac952a995a4186deb964a72742a3715d49eb231e63cffb80df77f089a363N.exe cmd.exe PID 900 wrote to memory of 3888 900 4ac2ac952a995a4186deb964a72742a3715d49eb231e63cffb80df77f089a363N.exe cmd.exe PID 900 wrote to memory of 3888 900 4ac2ac952a995a4186deb964a72742a3715d49eb231e63cffb80df77f089a363N.exe cmd.exe PID 3888 wrote to memory of 468 3888 cmd.exe PING.EXE PID 3888 wrote to memory of 468 3888 cmd.exe PING.EXE PID 3888 wrote to memory of 468 3888 cmd.exe PING.EXE PID 3888 wrote to memory of 1996 3888 cmd.exe swyxl.exe PID 3888 wrote to memory of 1996 3888 cmd.exe swyxl.exe PID 3888 wrote to memory of 1996 3888 cmd.exe swyxl.exe PID 1996 wrote to memory of 5020 1996 swyxl.exe rundll32.exe PID 1996 wrote to memory of 5020 1996 swyxl.exe rundll32.exe PID 1996 wrote to memory of 5020 1996 swyxl.exe rundll32.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\4ac2ac952a995a4186deb964a72742a3715d49eb231e63cffb80df77f089a363N.exe"C:\Users\Admin\AppData\Local\Temp\4ac2ac952a995a4186deb964a72742a3715d49eb231e63cffb80df77f089a363N.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:900 -
C:\Windows\SysWOW64\cmd.execmd.exe /c ping 127.0.0.1 -n 2&c:\swyxl.exe "C:\Users\Admin\AppData\Local\Temp\4ac2ac952a995a4186deb964a72742a3715d49eb231e63cffb80df77f089a363N.exe"2⤵
- System Location Discovery: System Language Discovery
- System Network Configuration Discovery: Internet Connection Discovery
- Suspicious use of WriteProcessMemory
PID:3888 -
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:468 -
\??\c:\swyxl.exec:\swyxl.exe "C:\Users\Admin\AppData\Local\Temp\4ac2ac952a995a4186deb964a72742a3715d49eb231e63cffb80df77f089a363N.exe"3⤵
- Deletes itself
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1996 -
\??\c:\windows\SysWOW64\rundll32.exec:\windows\system32\rundll32.exe "c:\mjkczeb\infmjdn.dll",GetWindowClass c:\swyxl.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)
- System Location Discovery: System Language Discovery
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:5020
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
156KB
MD5689ab57d641054d7d85554d930b272b0
SHA1be430d723d7e9e61668055e12dfd00716ed8b774
SHA256f779e5ba961278c4c63028e72d90addd425d224f8139e28a28f5b7248ae83ec2
SHA5121e78e42a98584935169d7ba943745c89851f8df84a53d1b36f9a0f5b3bea839d3af5eeef1cd7704ae6b9a962a287ba89c6e971f149f2fcebf504d86730c093fd
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Filesize
63KB
MD5bec93912524f50c6f7c943716c7ef02b
SHA169ba8f1dd5a7d6cd94d688c691406cbd54be4486
SHA256032570414587af2303431e8db5d5f4223e0147f4b63a2160b97d9a6ea531bd81
SHA51241fb8970e9007c789227740e81a483bda806470ce25476589a3dfceddaaa60b20d890c37b56f8be83defb2a5b774dbd6c2026fc259884e8acf2971b06041f6a6