Analysis
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max time kernel
115s -
max time network
118s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
17/10/2024, 01:01
Static task
static1
Behavioral task
behavioral1
Sample
b4fb4635779ffd005dc23d9a661d459fec77b378acf66a03e52262ae0095e42dN.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
b4fb4635779ffd005dc23d9a661d459fec77b378acf66a03e52262ae0095e42dN.exe
Resource
win10v2004-20241007-en
General
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Target
b4fb4635779ffd005dc23d9a661d459fec77b378acf66a03e52262ae0095e42dN.exe
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Size
83KB
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MD5
60eafa19c7383f0fd224e93cafd94c70
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SHA1
cb1aa5f0b22273fb5912b9d6df076ed5e5ef631b
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SHA256
b4fb4635779ffd005dc23d9a661d459fec77b378acf66a03e52262ae0095e42d
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SHA512
058b00a1dfd6fbd9eca141eeb49c1f502ae599ca524f68fdd6c321309df7f2e0372d7f55e3cfb2122220226bdbba64460c2b0fc496df1cb0a3147c1a6588058d
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SSDEEP
768:qGHV45EDE477AZbUJx0rZGE3jCELoiMMj6hZ3nE+EXVmkDbjRL8Khc15Z6J1SkQ3:qG14P477AxUYrZGoC09k0SkTRHhWqPRU
Malware Config
Signatures
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Blocklisted process makes network request 3 IoCs
flow pid Process 22 3728 rundll32.exe 23 3728 rundll32.exe 24 3728 rundll32.exe -
Deletes itself 1 IoCs
pid Process 3912 kdejj.exe -
Executes dropped EXE 1 IoCs
pid Process 3912 kdejj.exe -
Loads dropped DLL 1 IoCs
pid Process 3728 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
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\EvtMgr = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\dlfgh\\ikfsksggq.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.
description ioc Process File opened (read-only) \??\b: rundll32.exe File opened (read-only) \??\g: rundll32.exe File opened (read-only) \??\l: rundll32.exe File opened (read-only) \??\o: rundll32.exe File opened (read-only) \??\p: 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) \??\v: rundll32.exe File opened (read-only) \??\w: rundll32.exe File opened (read-only) \??\x: rundll32.exe File opened (read-only) \??\y: rundll32.exe File opened (read-only) \??\z: rundll32.exe File opened (read-only) \??\k: rundll32.exe File opened (read-only) \??\t: rundll32.exe File opened (read-only) \??\a: rundll32.exe File opened (read-only) \??\e: rundll32.exe File opened (read-only) \??\h: rundll32.exe File opened (read-only) \??\i: rundll32.exe File opened (read-only) \??\j: rundll32.exe File opened (read-only) \??\m: rundll32.exe File opened (read-only) \??\n: rundll32.exe File opened (read-only) \??\u: 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.
description 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.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language PING.EXE Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language kdejj.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language rundll32.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language b4fb4635779ffd005dc23d9a661d459fec77b378acf66a03e52262ae0095e42dN.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.
pid Process 1900 cmd.exe 4028 PING.EXE -
Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
description 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
pid Process 4028 PING.EXE -
Suspicious behavior: EnumeratesProcesses 4 IoCs
pid Process 3728 rundll32.exe 3728 rundll32.exe 3728 rundll32.exe 3728 rundll32.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 3728 rundll32.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 2800 b4fb4635779ffd005dc23d9a661d459fec77b378acf66a03e52262ae0095e42dN.exe 3912 kdejj.exe -
Suspicious use of WriteProcessMemory 12 IoCs
description pid Process procid_target PID 2800 wrote to memory of 1900 2800 b4fb4635779ffd005dc23d9a661d459fec77b378acf66a03e52262ae0095e42dN.exe 86 PID 2800 wrote to memory of 1900 2800 b4fb4635779ffd005dc23d9a661d459fec77b378acf66a03e52262ae0095e42dN.exe 86 PID 2800 wrote to memory of 1900 2800 b4fb4635779ffd005dc23d9a661d459fec77b378acf66a03e52262ae0095e42dN.exe 86 PID 1900 wrote to memory of 4028 1900 cmd.exe 88 PID 1900 wrote to memory of 4028 1900 cmd.exe 88 PID 1900 wrote to memory of 4028 1900 cmd.exe 88 PID 1900 wrote to memory of 3912 1900 cmd.exe 92 PID 1900 wrote to memory of 3912 1900 cmd.exe 92 PID 1900 wrote to memory of 3912 1900 cmd.exe 92 PID 3912 wrote to memory of 3728 3912 kdejj.exe 93 PID 3912 wrote to memory of 3728 3912 kdejj.exe 93 PID 3912 wrote to memory of 3728 3912 kdejj.exe 93
Processes
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C:\Users\Admin\AppData\Local\Temp\b4fb4635779ffd005dc23d9a661d459fec77b378acf66a03e52262ae0095e42dN.exe"C:\Users\Admin\AppData\Local\Temp\b4fb4635779ffd005dc23d9a661d459fec77b378acf66a03e52262ae0095e42dN.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2800 -
C:\Windows\SysWOW64\cmd.execmd.exe /c ping 127.0.0.1 -n 2&c:\kdejj.exe "C:\Users\Admin\AppData\Local\Temp\b4fb4635779ffd005dc23d9a661d459fec77b378acf66a03e52262ae0095e42dN.exe"2⤵
- System Location Discovery: System Language Discovery
- System Network Configuration Discovery: Internet Connection Discovery
- Suspicious use of WriteProcessMemory
PID:1900 -
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:4028
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\??\c:\kdejj.exec:\kdejj.exe "C:\Users\Admin\AppData\Local\Temp\b4fb4635779ffd005dc23d9a661d459fec77b378acf66a03e52262ae0095e42dN.exe"3⤵
- Deletes itself
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3912 -
\??\c:\windows\SysWOW64\rundll32.exec:\windows\system32\rundll32.exe "c:\dlfgh\ikfsksggq.dll",init c:\kdejj.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:3728
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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
84KB
MD5559f0b46b1140e338193fb68b03f17cf
SHA174e34100a4c49fb0ea3107f4ca09d4b181f89b01
SHA25648040c5ae56da6a6fe490c56c363e3a68adaa930618a43bdd60caaf1cdc8a011
SHA512912a6cc4f99b8c8ed3f1dd37410ec9df5d419f23bcd31106f080b0e18338da3b8c84ebcaaa31b5f1199399e41163e86c7e7e6a07d5b740fa0932a4f7ebec8597
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Filesize
42KB
MD536e3fb5964d663272cf1169e1e1ca478
SHA158115e08b49505bcbbb5c88a28a86222ba18d5d4
SHA256c7c41689de030df0f78f471422fa2a6383b36e77c94e7f6f124a96feb3e27ed7
SHA512daff53b11aa400437a06287707a334a09661c1ef7d0fd8beaf1a874c79c16fe45bd1188343d0623e839d3ead5ea2dd90896e37ccf3b252c7220c74989a9ba442