Analysis
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max time kernel
142s -
max time network
151s -
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 20:22
Static task
static1
Behavioral task
behavioral1
Sample
1ef6359bccac00b5eaa6cbd8b98d93138706245da928acf387916641ec62c555.exe
Resource
win7-20240903-en
General
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Target
1ef6359bccac00b5eaa6cbd8b98d93138706245da928acf387916641ec62c555.exe
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Size
110KB
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MD5
ca38e342fb3a0d527044751178e4e3b0
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SHA1
124dfed2232e9c5d7cb0c7b7707cafd6034c8edf
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SHA256
1ef6359bccac00b5eaa6cbd8b98d93138706245da928acf387916641ec62c555
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SHA512
53eea7a657f0afc19f85f9a1b312843c5cdbea97590ff0b1678deed943a4e9626ac14b3f1d3bbe8b6949e89fb40f4dfbdeb5b92c5a377a3d07686d196fef6e71
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SSDEEP
3072:IK4RNx6nb4RoIw/XBSeral6oaE0HGnvXuEOrc0pTT:Il6XYeel6GGGVOh
Malware Config
Signatures
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Blocklisted process makes network request 8 IoCs
Processes:
rundll32.exeflow pid process 14 3656 rundll32.exe 20 3656 rundll32.exe 21 3656 rundll32.exe 22 3656 rundll32.exe 36 3656 rundll32.exe 37 3656 rundll32.exe 41 3656 rundll32.exe 47 3656 rundll32.exe -
ACProtect 1.3x - 1.4x DLL software 1 IoCs
Detects file using ACProtect software.
Processes:
resource yara_rule \??\c:\cmxir\jdfau.dll acprotect -
Deletes itself 1 IoCs
Processes:
lmyie.exepid process 1868 lmyie.exe -
Executes dropped EXE 1 IoCs
Processes:
lmyie.exepid process 1868 lmyie.exe -
Loads dropped DLL 1 IoCs
Processes:
rundll32.exepid process 3656 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-1-5-21-2437139445-1151884604-3026847218-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\EvtMgr = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\cmxir\\jdfau.dll\",init" 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) \??\q: rundll32.exe File opened (read-only) \??\v: rundll32.exe File opened (read-only) \??\y: rundll32.exe File opened (read-only) \??\b: rundll32.exe File opened (read-only) \??\g: 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) \??\p: rundll32.exe File opened (read-only) \??\r: rundll32.exe File opened (read-only) \??\s: rundll32.exe File opened (read-only) \??\e: rundll32.exe File opened (read-only) \??\x: 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) \??\a: rundll32.exe File opened (read-only) \??\k: rundll32.exe File opened (read-only) \??\u: rundll32.exe File opened (read-only) \??\w: rundll32.exe File opened (read-only) \??\z: 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 -
Processes:
resource yara_rule \??\c:\cmxir\jdfau.dll upx behavioral2/memory/3656-10-0x0000000010000000-0x0000000010024000-memory.dmp upx behavioral2/memory/3656-11-0x0000000010000000-0x0000000010024000-memory.dmp upx behavioral2/memory/3656-13-0x0000000010000000-0x0000000010024000-memory.dmp upx behavioral2/memory/3656-14-0x0000000010000000-0x0000000010024000-memory.dmp upx behavioral2/memory/3656-15-0x0000000010000000-0x0000000010024000-memory.dmp upx behavioral2/memory/3656-16-0x0000000010000000-0x0000000010024000-memory.dmp upx -
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:
rundll32.exe1ef6359bccac00b5eaa6cbd8b98d93138706245da928acf387916641ec62c555.execmd.exePING.EXElmyie.exedescription ioc process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language rundll32.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 1ef6359bccac00b5eaa6cbd8b98d93138706245da928acf387916641ec62c555.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 lmyie.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 3508 cmd.exe 684 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 3656 rundll32.exe 3656 rundll32.exe 3656 rundll32.exe 3656 rundll32.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
rundll32.exedescription pid process Token: SeDebugPrivilege 3656 rundll32.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
Processes:
1ef6359bccac00b5eaa6cbd8b98d93138706245da928acf387916641ec62c555.exelmyie.exepid process 3956 1ef6359bccac00b5eaa6cbd8b98d93138706245da928acf387916641ec62c555.exe 1868 lmyie.exe -
Suspicious use of WriteProcessMemory 12 IoCs
Processes:
1ef6359bccac00b5eaa6cbd8b98d93138706245da928acf387916641ec62c555.execmd.exelmyie.exedescription pid process target process PID 3956 wrote to memory of 3508 3956 1ef6359bccac00b5eaa6cbd8b98d93138706245da928acf387916641ec62c555.exe cmd.exe PID 3956 wrote to memory of 3508 3956 1ef6359bccac00b5eaa6cbd8b98d93138706245da928acf387916641ec62c555.exe cmd.exe PID 3956 wrote to memory of 3508 3956 1ef6359bccac00b5eaa6cbd8b98d93138706245da928acf387916641ec62c555.exe cmd.exe PID 3508 wrote to memory of 684 3508 cmd.exe PING.EXE PID 3508 wrote to memory of 684 3508 cmd.exe PING.EXE PID 3508 wrote to memory of 684 3508 cmd.exe PING.EXE PID 3508 wrote to memory of 1868 3508 cmd.exe lmyie.exe PID 3508 wrote to memory of 1868 3508 cmd.exe lmyie.exe PID 3508 wrote to memory of 1868 3508 cmd.exe lmyie.exe PID 1868 wrote to memory of 3656 1868 lmyie.exe rundll32.exe PID 1868 wrote to memory of 3656 1868 lmyie.exe rundll32.exe PID 1868 wrote to memory of 3656 1868 lmyie.exe rundll32.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\1ef6359bccac00b5eaa6cbd8b98d93138706245da928acf387916641ec62c555.exe"C:\Users\Admin\AppData\Local\Temp\1ef6359bccac00b5eaa6cbd8b98d93138706245da928acf387916641ec62c555.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3956 -
C:\Windows\SysWOW64\cmd.execmd.exe /c ping 127.0.0.1 -n 2&c:\lmyie.exe "C:\Users\Admin\AppData\Local\Temp\1ef6359bccac00b5eaa6cbd8b98d93138706245da928acf387916641ec62c555.exe"2⤵
- System Location Discovery: System Language Discovery
- System Network Configuration Discovery: Internet Connection Discovery
- Suspicious use of WriteProcessMemory
PID:3508 -
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:684 -
\??\c:\lmyie.exec:\lmyie.exe "C:\Users\Admin\AppData\Local\Temp\1ef6359bccac00b5eaa6cbd8b98d93138706245da928acf387916641ec62c555.exe"3⤵
- Deletes itself
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1868 -
\??\c:\windows\SysWOW64\rundll32.exec:\windows\system32\rundll32.exe "c:\cmxir\jdfau.dll",init c:\lmyie.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:3656
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
46KB
MD542fe886bcb6460f7c2a46e21ecac5da6
SHA17d9a1c9fe17121cf61444da965f29e974a95ede2
SHA256b6bc7902da0250f6ca920b35b222f6a0fe62102caf05d2a1722c4d3b225a0a9e
SHA5123d1a7dc1d9ca8a4376302ba20df584ad59b98e0d3b18b06b22d7f5a455833ce124e412fc1922a3b704dcbafa31987cda3115c9a71dd6299683502cebae33567c
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Filesize
110KB
MD53945cf37e23a4b60e28f20fb20908211
SHA146e3dda6b3bf2233c605e420e0198251fd9dce88
SHA256d6026ff687073c8d1d36a8e1853459d69af2e71f6bf7c6ec970a41ab37966b42
SHA51232b618918e6eaf8cf75fddcd2ee9823ae59e8d5495c81d5aea44ccd77092e0281acf43e32c1ce0edeb350626f51a492522d03c154b1c5d7949aaf229aa26d11f