Analysis
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max time kernel
149s -
max time network
147s -
platform
windows7_x64 -
resource
win7-20240903-en -
resource tags
arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system -
submitted
10-11-2024 01:30
Static task
static1
Behavioral task
behavioral1
Sample
54fcac70431b432f35751c308c028ff35350b3cf3019a0bdd28d3d80b8db4ed8.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
54fcac70431b432f35751c308c028ff35350b3cf3019a0bdd28d3d80b8db4ed8.exe
Resource
win10v2004-20241007-en
General
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Target
54fcac70431b432f35751c308c028ff35350b3cf3019a0bdd28d3d80b8db4ed8.exe
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Size
410KB
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MD5
e62821ca3e227ea0dcf49df005e0b991
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SHA1
5051c0a586fadc90ae517d392fef451fd18d6f44
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SHA256
54fcac70431b432f35751c308c028ff35350b3cf3019a0bdd28d3d80b8db4ed8
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SHA512
03e9dcdaddf891ad81572a94c2c49688754695c59892a99fd4e0c783088e5fcd836cce229645e54a56dbbbff83bd87b28f3bc7422db24ff916dac4643e620eb4
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SSDEEP
6144:3w9D91dOrcN3ZGXNYFNmIkYvUIelVjjVtGRyFH4:gtRfJcNYFNm8UhlZGse
Malware Config
Signatures
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Blocklisted process makes network request 10 IoCs
Processes:
rundll32.exeflow pid process 4 2076 rundll32.exe 5 2076 rundll32.exe 6 2076 rundll32.exe 7 2076 rundll32.exe 8 2076 rundll32.exe 9 2076 rundll32.exe 10 2076 rundll32.exe 11 2076 rundll32.exe 13 2076 rundll32.exe 14 2076 rundll32.exe -
Deletes itself 1 IoCs
Processes:
yjqyxl.exepid process 836 yjqyxl.exe -
Executes dropped EXE 1 IoCs
Processes:
yjqyxl.exepid process 836 yjqyxl.exe -
Loads dropped DLL 6 IoCs
Processes:
cmd.exerundll32.exepid process 2848 cmd.exe 2848 cmd.exe 2076 rundll32.exe 2076 rundll32.exe 2076 rundll32.exe 2076 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-1-5-21-3290804112-2823094203-3137964600-1000\Software\Microsoft\Windows\CurrentVersion\Run\Dotx = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\Program Files\\hxpbs\\zrpcx.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) \??\h: rundll32.exe File opened (read-only) \??\o: rundll32.exe File opened (read-only) \??\z: rundll32.exe File opened (read-only) \??\j: rundll32.exe File opened (read-only) \??\l: rundll32.exe File opened (read-only) \??\n: rundll32.exe File opened (read-only) \??\r: rundll32.exe File opened (read-only) \??\w: rundll32.exe File opened (read-only) \??\u: rundll32.exe File opened (read-only) \??\x: rundll32.exe File opened (read-only) \??\y: rundll32.exe File opened (read-only) \??\a: rundll32.exe File opened (read-only) \??\e: rundll32.exe File opened (read-only) \??\i: rundll32.exe File opened (read-only) \??\m: rundll32.exe File opened (read-only) \??\q: rundll32.exe File opened (read-only) \??\t: rundll32.exe File opened (read-only) \??\v: rundll32.exe File opened (read-only) \??\b: rundll32.exe File opened (read-only) \??\g: rundll32.exe File opened (read-only) \??\k: rundll32.exe File opened (read-only) \??\p: rundll32.exe File opened (read-only) \??\s: 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 2076 rundll32.exe -
Drops file in Program Files directory 2 IoCs
Processes:
yjqyxl.exedescription ioc process File opened for modification \??\c:\Program Files\hxpbs yjqyxl.exe File created \??\c:\Program Files\hxpbs\zrpcx.dll yjqyxl.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:
54fcac70431b432f35751c308c028ff35350b3cf3019a0bdd28d3d80b8db4ed8.execmd.exePING.EXEyjqyxl.exerundll32.exedescription ioc process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 54fcac70431b432f35751c308c028ff35350b3cf3019a0bdd28d3d80b8db4ed8.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 yjqyxl.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 2848 cmd.exe 1636 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 2076 rundll32.exe 2076 rundll32.exe 2076 rundll32.exe 2076 rundll32.exe 2076 rundll32.exe 2076 rundll32.exe 2076 rundll32.exe 2076 rundll32.exe 2076 rundll32.exe 2076 rundll32.exe 2076 rundll32.exe 2076 rundll32.exe 2076 rundll32.exe 2076 rundll32.exe 2076 rundll32.exe 2076 rundll32.exe 2076 rundll32.exe 2076 rundll32.exe 2076 rundll32.exe 2076 rundll32.exe 2076 rundll32.exe 2076 rundll32.exe 2076 rundll32.exe 2076 rundll32.exe 2076 rundll32.exe 2076 rundll32.exe 2076 rundll32.exe 2076 rundll32.exe 2076 rundll32.exe 2076 rundll32.exe 2076 rundll32.exe 2076 rundll32.exe 2076 rundll32.exe 2076 rundll32.exe 2076 rundll32.exe 2076 rundll32.exe 2076 rundll32.exe 2076 rundll32.exe 2076 rundll32.exe 2076 rundll32.exe 2076 rundll32.exe 2076 rundll32.exe 2076 rundll32.exe 2076 rundll32.exe 2076 rundll32.exe 2076 rundll32.exe 2076 rundll32.exe 2076 rundll32.exe 2076 rundll32.exe 2076 rundll32.exe 2076 rundll32.exe 2076 rundll32.exe 2076 rundll32.exe 2076 rundll32.exe 2076 rundll32.exe 2076 rundll32.exe 2076 rundll32.exe 2076 rundll32.exe 2076 rundll32.exe 2076 rundll32.exe 2076 rundll32.exe 2076 rundll32.exe 2076 rundll32.exe 2076 rundll32.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
rundll32.exedescription pid process Token: SeDebugPrivilege 2076 rundll32.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
Processes:
54fcac70431b432f35751c308c028ff35350b3cf3019a0bdd28d3d80b8db4ed8.exeyjqyxl.exepid process 2288 54fcac70431b432f35751c308c028ff35350b3cf3019a0bdd28d3d80b8db4ed8.exe 836 yjqyxl.exe -
Suspicious use of WriteProcessMemory 19 IoCs
Processes:
54fcac70431b432f35751c308c028ff35350b3cf3019a0bdd28d3d80b8db4ed8.execmd.exeyjqyxl.exedescription pid process target process PID 2288 wrote to memory of 2848 2288 54fcac70431b432f35751c308c028ff35350b3cf3019a0bdd28d3d80b8db4ed8.exe cmd.exe PID 2288 wrote to memory of 2848 2288 54fcac70431b432f35751c308c028ff35350b3cf3019a0bdd28d3d80b8db4ed8.exe cmd.exe PID 2288 wrote to memory of 2848 2288 54fcac70431b432f35751c308c028ff35350b3cf3019a0bdd28d3d80b8db4ed8.exe cmd.exe PID 2288 wrote to memory of 2848 2288 54fcac70431b432f35751c308c028ff35350b3cf3019a0bdd28d3d80b8db4ed8.exe cmd.exe PID 2848 wrote to memory of 1636 2848 cmd.exe PING.EXE PID 2848 wrote to memory of 1636 2848 cmd.exe PING.EXE PID 2848 wrote to memory of 1636 2848 cmd.exe PING.EXE PID 2848 wrote to memory of 1636 2848 cmd.exe PING.EXE PID 2848 wrote to memory of 836 2848 cmd.exe yjqyxl.exe PID 2848 wrote to memory of 836 2848 cmd.exe yjqyxl.exe PID 2848 wrote to memory of 836 2848 cmd.exe yjqyxl.exe PID 2848 wrote to memory of 836 2848 cmd.exe yjqyxl.exe PID 836 wrote to memory of 2076 836 yjqyxl.exe rundll32.exe PID 836 wrote to memory of 2076 836 yjqyxl.exe rundll32.exe PID 836 wrote to memory of 2076 836 yjqyxl.exe rundll32.exe PID 836 wrote to memory of 2076 836 yjqyxl.exe rundll32.exe PID 836 wrote to memory of 2076 836 yjqyxl.exe rundll32.exe PID 836 wrote to memory of 2076 836 yjqyxl.exe rundll32.exe PID 836 wrote to memory of 2076 836 yjqyxl.exe rundll32.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\54fcac70431b432f35751c308c028ff35350b3cf3019a0bdd28d3d80b8db4ed8.exe"C:\Users\Admin\AppData\Local\Temp\54fcac70431b432f35751c308c028ff35350b3cf3019a0bdd28d3d80b8db4ed8.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2288 -
C:\Windows\SysWOW64\cmd.execmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\yjqyxl.exe "C:\Users\Admin\AppData\Local\Temp\54fcac70431b432f35751c308c028ff35350b3cf3019a0bdd28d3d80b8db4ed8.exe"2⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- System Network Configuration Discovery: Internet Connection Discovery
- Suspicious use of WriteProcessMemory
PID:2848 -
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:1636 -
C:\Users\Admin\AppData\Local\Temp\yjqyxl.exeC:\Users\Admin\AppData\Local\Temp\\yjqyxl.exe "C:\Users\Admin\AppData\Local\Temp\54fcac70431b432f35751c308c028ff35350b3cf3019a0bdd28d3d80b8db4ed8.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:836 -
\??\c:\windows\SysWOW64\rundll32.exec:\windows\system32\rundll32.exe "c:\Program Files\hxpbs\zrpcx.dll",Verify C:\Users\Admin\AppData\Local\Temp\yjqyxl.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:2076
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
228KB
MD5405e56ca9e961d17de9f38e00a6662f5
SHA145c8a78f34708a54ed985b5f4d3efa39f7a1a531
SHA256936fc593b0e0b7103d7a88c5a07f2c1788746a30fad11b90ad50f88b06c58997
SHA5121aea9da8bab8eff05f9513e9fd6b6b108585cb79d86a48f00517b9a986752254ff911630a43894e3c609e95059b69b0878efa79e1d6653849c7008df702e259f
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Filesize
410KB
MD5ca17d04a2d757e93e467a201b1f41512
SHA116afb6de935de33f1d2f4d09d1d1bf9c707aa47e
SHA25631c6cb71fae7303aaa69d0cd4adee29dfbc8c1c2f76f0d22804521c5cc1d58b2
SHA512885a0e2e8f331ced3513a707cc9a2f19abfbad925e41220b59348cb82a54ff35032871aee73c355d5742ad24bbb476aa7b77a43edad64a7b97a2acebcbbf6fca