Analysis
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max time kernel
149s -
max time network
141s -
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 19:05
Static task
static1
Behavioral task
behavioral1
Sample
10b23b9d0153a49243e378463e51cdbc3eac944e4fbd1de39992c6d72f7b72cc.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
10b23b9d0153a49243e378463e51cdbc3eac944e4fbd1de39992c6d72f7b72cc.exe
Resource
win10v2004-20241007-en
General
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Target
10b23b9d0153a49243e378463e51cdbc3eac944e4fbd1de39992c6d72f7b72cc.exe
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Size
416KB
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MD5
e1aa000f192ae32bdd6d7b598759c0d2
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SHA1
b483b94b4ca4f2cd430c10c2ff58a3c4e5529622
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SHA256
10b23b9d0153a49243e378463e51cdbc3eac944e4fbd1de39992c6d72f7b72cc
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SHA512
8b7f4a464097bf10cc9f29b454be7f460c9690f7b8e606c843f1069ea224fb095db7558b7befdf1c23dc7425b3112f3c2df1d0162760d5d4eee38190fff0294c
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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 15 2256 rundll32.exe 21 2256 rundll32.exe 22 2256 rundll32.exe 23 2256 rundll32.exe 37 2256 rundll32.exe 38 2256 rundll32.exe 42 2256 rundll32.exe 49 2256 rundll32.exe -
Deletes itself 1 IoCs
Processes:
zwskg.exepid process 4796 zwskg.exe -
Executes dropped EXE 1 IoCs
Processes:
zwskg.exepid process 4796 zwskg.exe -
Loads dropped DLL 1 IoCs
Processes:
rundll32.exepid process 2256 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-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Dotx = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\Program Files\\cnjqg\\jbavl.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) \??\j: rundll32.exe File opened (read-only) \??\k: rundll32.exe File opened (read-only) \??\t: rundll32.exe File opened (read-only) \??\z: rundll32.exe File opened (read-only) \??\e: 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) \??\q: rundll32.exe File opened (read-only) \??\s: rundll32.exe File opened (read-only) \??\u: rundll32.exe File opened (read-only) \??\v: rundll32.exe File opened (read-only) \??\h: rundll32.exe File opened (read-only) \??\y: rundll32.exe File opened (read-only) \??\w: rundll32.exe File opened (read-only) \??\b: rundll32.exe File opened (read-only) \??\g: rundll32.exe File opened (read-only) \??\i: rundll32.exe File opened (read-only) \??\m: rundll32.exe File opened (read-only) \??\o: rundll32.exe File opened (read-only) \??\r: rundll32.exe File opened (read-only) \??\x: rundll32.exe File opened (read-only) \??\a: 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 2256 rundll32.exe -
Drops file in Program Files directory 2 IoCs
Processes:
zwskg.exedescription ioc process File created \??\c:\Program Files\cnjqg\jbavl.dll zwskg.exe File opened for modification \??\c:\Program Files\cnjqg zwskg.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:
10b23b9d0153a49243e378463e51cdbc3eac944e4fbd1de39992c6d72f7b72cc.execmd.exePING.EXEzwskg.exerundll32.exedescription ioc process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 10b23b9d0153a49243e378463e51cdbc3eac944e4fbd1de39992c6d72f7b72cc.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 zwskg.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.
Processes:
cmd.exePING.EXEpid process 1248 cmd.exe 2376 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 64 IoCs
Processes:
rundll32.exepid process 2256 rundll32.exe 2256 rundll32.exe 2256 rundll32.exe 2256 rundll32.exe 2256 rundll32.exe 2256 rundll32.exe 2256 rundll32.exe 2256 rundll32.exe 2256 rundll32.exe 2256 rundll32.exe 2256 rundll32.exe 2256 rundll32.exe 2256 rundll32.exe 2256 rundll32.exe 2256 rundll32.exe 2256 rundll32.exe 2256 rundll32.exe 2256 rundll32.exe 2256 rundll32.exe 2256 rundll32.exe 2256 rundll32.exe 2256 rundll32.exe 2256 rundll32.exe 2256 rundll32.exe 2256 rundll32.exe 2256 rundll32.exe 2256 rundll32.exe 2256 rundll32.exe 2256 rundll32.exe 2256 rundll32.exe 2256 rundll32.exe 2256 rundll32.exe 2256 rundll32.exe 2256 rundll32.exe 2256 rundll32.exe 2256 rundll32.exe 2256 rundll32.exe 2256 rundll32.exe 2256 rundll32.exe 2256 rundll32.exe 2256 rundll32.exe 2256 rundll32.exe 2256 rundll32.exe 2256 rundll32.exe 2256 rundll32.exe 2256 rundll32.exe 2256 rundll32.exe 2256 rundll32.exe 2256 rundll32.exe 2256 rundll32.exe 2256 rundll32.exe 2256 rundll32.exe 2256 rundll32.exe 2256 rundll32.exe 2256 rundll32.exe 2256 rundll32.exe 2256 rundll32.exe 2256 rundll32.exe 2256 rundll32.exe 2256 rundll32.exe 2256 rundll32.exe 2256 rundll32.exe 2256 rundll32.exe 2256 rundll32.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
rundll32.exedescription pid process Token: SeDebugPrivilege 2256 rundll32.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
Processes:
10b23b9d0153a49243e378463e51cdbc3eac944e4fbd1de39992c6d72f7b72cc.exezwskg.exepid process 2648 10b23b9d0153a49243e378463e51cdbc3eac944e4fbd1de39992c6d72f7b72cc.exe 4796 zwskg.exe -
Suspicious use of WriteProcessMemory 12 IoCs
Processes:
10b23b9d0153a49243e378463e51cdbc3eac944e4fbd1de39992c6d72f7b72cc.execmd.exezwskg.exedescription pid process target process PID 2648 wrote to memory of 1248 2648 10b23b9d0153a49243e378463e51cdbc3eac944e4fbd1de39992c6d72f7b72cc.exe cmd.exe PID 2648 wrote to memory of 1248 2648 10b23b9d0153a49243e378463e51cdbc3eac944e4fbd1de39992c6d72f7b72cc.exe cmd.exe PID 2648 wrote to memory of 1248 2648 10b23b9d0153a49243e378463e51cdbc3eac944e4fbd1de39992c6d72f7b72cc.exe cmd.exe PID 1248 wrote to memory of 2376 1248 cmd.exe PING.EXE PID 1248 wrote to memory of 2376 1248 cmd.exe PING.EXE PID 1248 wrote to memory of 2376 1248 cmd.exe PING.EXE PID 1248 wrote to memory of 4796 1248 cmd.exe zwskg.exe PID 1248 wrote to memory of 4796 1248 cmd.exe zwskg.exe PID 1248 wrote to memory of 4796 1248 cmd.exe zwskg.exe PID 4796 wrote to memory of 2256 4796 zwskg.exe rundll32.exe PID 4796 wrote to memory of 2256 4796 zwskg.exe rundll32.exe PID 4796 wrote to memory of 2256 4796 zwskg.exe rundll32.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\10b23b9d0153a49243e378463e51cdbc3eac944e4fbd1de39992c6d72f7b72cc.exe"C:\Users\Admin\AppData\Local\Temp\10b23b9d0153a49243e378463e51cdbc3eac944e4fbd1de39992c6d72f7b72cc.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2648 -
C:\Windows\SysWOW64\cmd.execmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\zwskg.exe "C:\Users\Admin\AppData\Local\Temp\10b23b9d0153a49243e378463e51cdbc3eac944e4fbd1de39992c6d72f7b72cc.exe"2⤵
- System Location Discovery: System Language Discovery
- System Network Configuration Discovery: Internet Connection Discovery
- Suspicious use of WriteProcessMemory
PID:1248 -
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:2376 -
C:\Users\Admin\AppData\Local\Temp\zwskg.exeC:\Users\Admin\AppData\Local\Temp\\zwskg.exe "C:\Users\Admin\AppData\Local\Temp\10b23b9d0153a49243e378463e51cdbc3eac944e4fbd1de39992c6d72f7b72cc.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:4796 -
\??\c:\windows\SysWOW64\rundll32.exec:\windows\system32\rundll32.exe "c:\Program Files\cnjqg\jbavl.dll",Verify C:\Users\Admin\AppData\Local\Temp\zwskg.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:2256
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
416KB
MD51af432feda8aaec06e91ecfc9540eb05
SHA1cd1dde344d822a9365a03ba4e62c2e8f858a4506
SHA256dc6ff5ac7b31603fca60194faeac9f75b61c83757aaa3a1e4c05254cbb161127
SHA5123fcf041e7b7771250f985e4f6e7f9083c5707a436cee74e17325a04a82478610c7974624b50a694eeba4d30a9d2fe408a7fc944c793ca716fb3ec5f84e1c2236
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Filesize
228KB
MD571872008b2ea6bde3aa9e0dc98d1d868
SHA1311ea1d7f4d4c33b7c728969e0f041a98373ef46
SHA256b1b55d9e753ef4dd36b6b9fd362156a5e1e261ef5ebe8e0e33f72174ac0f1b0b
SHA512aa3c1aeeb6392134a6bada80d75e58d602a7162d93d730c6f6c61036b8822157ad02a32ac9d798dd340dc35a4711f81d4e2f7542554e62fee3de78e7ea857aa1