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 12:29
Static task
static1
Behavioral task
behavioral1
Sample
13bb7979d20c85394c2576859e34d73d87343b1c9dfeedd0ddea399fab472368.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
13bb7979d20c85394c2576859e34d73d87343b1c9dfeedd0ddea399fab472368.exe
Resource
win10v2004-20240508-en
General
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Target
13bb7979d20c85394c2576859e34d73d87343b1c9dfeedd0ddea399fab472368.exe
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Size
407KB
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MD5
87de50af2be2c65124dd39f215bee7d3
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SHA1
d59f6bb4171b6663f4a52d847cb1f53cd26d24d0
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SHA256
13bb7979d20c85394c2576859e34d73d87343b1c9dfeedd0ddea399fab472368
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SHA512
906af19c2ba2f8f24db3b4266c751a8c15dd8a0ff873d9adf9eb01da83dfef5f199093a5994db059e38c4ce835616d9133cfd2b7f9911cbcc7b6a21f4832d436
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SSDEEP
6144:3w9D91dOrcN3ZGXNYFNmIkYvUIelVjjVtGRyFH4:gtRfJcNYFNm8UhlZGse
Malware Config
Signatures
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Blocklisted process makes network request 8 IoCs
Processes:
rundll32.exeflow pid process 2 1076 rundll32.exe 7 1076 rundll32.exe 8 1076 rundll32.exe 9 1076 rundll32.exe 15 1076 rundll32.exe 16 1076 rundll32.exe 17 1076 rundll32.exe 18 1076 rundll32.exe -
Deletes itself 1 IoCs
Processes:
dudlx.exepid process 2856 dudlx.exe -
Executes dropped EXE 1 IoCs
Processes:
dudlx.exepid process 2856 dudlx.exe -
Loads dropped DLL 1 IoCs
Processes:
rundll32.exepid process 1076 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-1-5-21-1337824034-2731376981-3755436523-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Dotx = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\Program Files\\xhxft\\gibsl.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) \??\b: rundll32.exe File opened (read-only) \??\e: rundll32.exe File opened (read-only) \??\k: rundll32.exe File opened (read-only) \??\m: rundll32.exe File opened (read-only) \??\o: rundll32.exe File opened (read-only) \??\w: rundll32.exe File opened (read-only) \??\y: rundll32.exe File opened (read-only) \??\h: rundll32.exe File opened (read-only) \??\j: rundll32.exe File opened (read-only) \??\q: rundll32.exe File opened (read-only) \??\v: rundll32.exe File opened (read-only) \??\x: rundll32.exe File opened (read-only) \??\a: 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) \??\n: rundll32.exe File opened (read-only) \??\p: rundll32.exe File opened (read-only) \??\u: rundll32.exe File opened (read-only) \??\r: rundll32.exe File opened (read-only) \??\s: rundll32.exe File opened (read-only) \??\t: 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 1076 rundll32.exe -
Drops file in Program Files directory 2 IoCs
Processes:
dudlx.exedescription ioc process File opened for modification \??\c:\Program Files\xhxft dudlx.exe File created \??\c:\Program Files\xhxft\gibsl.dll dudlx.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 1076 rundll32.exe 1076 rundll32.exe 1076 rundll32.exe 1076 rundll32.exe 1076 rundll32.exe 1076 rundll32.exe 1076 rundll32.exe 1076 rundll32.exe 1076 rundll32.exe 1076 rundll32.exe 1076 rundll32.exe 1076 rundll32.exe 1076 rundll32.exe 1076 rundll32.exe 1076 rundll32.exe 1076 rundll32.exe 1076 rundll32.exe 1076 rundll32.exe 1076 rundll32.exe 1076 rundll32.exe 1076 rundll32.exe 1076 rundll32.exe 1076 rundll32.exe 1076 rundll32.exe 1076 rundll32.exe 1076 rundll32.exe 1076 rundll32.exe 1076 rundll32.exe 1076 rundll32.exe 1076 rundll32.exe 1076 rundll32.exe 1076 rundll32.exe 1076 rundll32.exe 1076 rundll32.exe 1076 rundll32.exe 1076 rundll32.exe 1076 rundll32.exe 1076 rundll32.exe 1076 rundll32.exe 1076 rundll32.exe 1076 rundll32.exe 1076 rundll32.exe 1076 rundll32.exe 1076 rundll32.exe 1076 rundll32.exe 1076 rundll32.exe 1076 rundll32.exe 1076 rundll32.exe 1076 rundll32.exe 1076 rundll32.exe 1076 rundll32.exe 1076 rundll32.exe 1076 rundll32.exe 1076 rundll32.exe 1076 rundll32.exe 1076 rundll32.exe 1076 rundll32.exe 1076 rundll32.exe 1076 rundll32.exe 1076 rundll32.exe 1076 rundll32.exe 1076 rundll32.exe 1076 rundll32.exe 1076 rundll32.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
rundll32.exedescription pid process Token: SeDebugPrivilege 1076 rundll32.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
Processes:
13bb7979d20c85394c2576859e34d73d87343b1c9dfeedd0ddea399fab472368.exedudlx.exepid process 1292 13bb7979d20c85394c2576859e34d73d87343b1c9dfeedd0ddea399fab472368.exe 2856 dudlx.exe -
Suspicious use of WriteProcessMemory 12 IoCs
Processes:
13bb7979d20c85394c2576859e34d73d87343b1c9dfeedd0ddea399fab472368.execmd.exedudlx.exedescription pid process target process PID 1292 wrote to memory of 5048 1292 13bb7979d20c85394c2576859e34d73d87343b1c9dfeedd0ddea399fab472368.exe cmd.exe PID 1292 wrote to memory of 5048 1292 13bb7979d20c85394c2576859e34d73d87343b1c9dfeedd0ddea399fab472368.exe cmd.exe PID 1292 wrote to memory of 5048 1292 13bb7979d20c85394c2576859e34d73d87343b1c9dfeedd0ddea399fab472368.exe cmd.exe PID 5048 wrote to memory of 3872 5048 cmd.exe PING.EXE PID 5048 wrote to memory of 3872 5048 cmd.exe PING.EXE PID 5048 wrote to memory of 3872 5048 cmd.exe PING.EXE PID 5048 wrote to memory of 2856 5048 cmd.exe dudlx.exe PID 5048 wrote to memory of 2856 5048 cmd.exe dudlx.exe PID 5048 wrote to memory of 2856 5048 cmd.exe dudlx.exe PID 2856 wrote to memory of 1076 2856 dudlx.exe rundll32.exe PID 2856 wrote to memory of 1076 2856 dudlx.exe rundll32.exe PID 2856 wrote to memory of 1076 2856 dudlx.exe rundll32.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\13bb7979d20c85394c2576859e34d73d87343b1c9dfeedd0ddea399fab472368.exe"C:\Users\Admin\AppData\Local\Temp\13bb7979d20c85394c2576859e34d73d87343b1c9dfeedd0ddea399fab472368.exe"1⤵
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1292 -
C:\Windows\SysWOW64\cmd.execmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\dudlx.exe "C:\Users\Admin\AppData\Local\Temp\13bb7979d20c85394c2576859e34d73d87343b1c9dfeedd0ddea399fab472368.exe"2⤵
- Suspicious use of WriteProcessMemory
PID:5048 -
C:\Windows\SysWOW64\PING.EXEping 127.0.0.1 -n 23⤵
- Runs ping.exe
PID:3872 -
C:\Users\Admin\AppData\Local\Temp\dudlx.exeC:\Users\Admin\AppData\Local\Temp\\dudlx.exe "C:\Users\Admin\AppData\Local\Temp\13bb7979d20c85394c2576859e34d73d87343b1c9dfeedd0ddea399fab472368.exe"3⤵
- Deletes itself
- Executes dropped EXE
- Drops file in Program Files directory
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2856 -
\??\c:\windows\SysWOW64\rundll32.exec:\windows\system32\rundll32.exe "c:\Program Files\xhxft\gibsl.dll",Verify C:\Users\Admin\AppData\Local\Temp\dudlx.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:1076
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
MD513448c7c48b4d74b7fd34258788d2ad5
SHA13ad3289ef529a276dddbc9e5f21d5f523adb913e
SHA25636db552ead93290f025151bc054db037af859529b89a41075c2cb3b9a3a73726
SHA512171208055c3d8a12ce9d3399b5e90ab7137e7c68168de3ec2d7084d917a3172ea84bcdc96453ffb787241a73722caffc6a4e7a2e88b9cdfeb6602f15b1ba874e
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Filesize
228KB
MD548da8d3e799903873f5adbfd2b4368b9
SHA138fb343b2a4d6814fe9586f5320c2d8a579d7d69
SHA25659567d477f40987311589b12ac58a5a5b136fbfdd6a3e1ca3155b9d702fb4da7
SHA512c80bf89c96174a5ff73bc5771e25439800c98c4ecbbe4b94f3c321285f596eb7bf7924a8586fb5aac2fd176a1a5f2cfde5cb785d47a293cbf3077a180794ee2d