Analysis
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max time kernel
149s -
max time network
149s -
platform
windows7_x64 -
resource
win7-20240419-en -
resource tags
arch:x64arch:x86image:win7-20240419-enlocale:en-usos:windows7-x64system -
submitted
11-06-2024 13:32
Static task
static1
Behavioral task
behavioral1
Sample
a936358d2c1bc40cada39b3467e78138161a5c4be44143d2c16c8e13acc2f147.exe
Resource
win7-20240419-en
Behavioral task
behavioral2
Sample
a936358d2c1bc40cada39b3467e78138161a5c4be44143d2c16c8e13acc2f147.exe
Resource
win10v2004-20240426-en
General
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Target
a936358d2c1bc40cada39b3467e78138161a5c4be44143d2c16c8e13acc2f147.exe
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Size
406KB
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MD5
7eaba6702a0f2b41ff07b8ba063a7f8a
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SHA1
84e4dbc9571f641252389f979b76f5e6bb3d8b5e
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SHA256
a936358d2c1bc40cada39b3467e78138161a5c4be44143d2c16c8e13acc2f147
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SHA512
c8b6dfe813fc8b5b413c62ffbbd64979200f32d17cf62ffe7026403377f15f0bf24de1e62294c12854efb67ecde7c29f288fd1d206a2cc51ffcd57a6e6eefe76
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SSDEEP
6144:3w9D91dOrcN3ZGXNYFNmIkYvUIelVjjVtGRyFH4R:gtRfJcNYFNm8UhlZGseR
Malware Config
Signatures
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Blocklisted process makes network request 10 IoCs
Processes:
rundll32.exeflow pid process 3 2204 rundll32.exe 6 2204 rundll32.exe 8 2204 rundll32.exe 9 2204 rundll32.exe 10 2204 rundll32.exe 11 2204 rundll32.exe 12 2204 rundll32.exe 13 2204 rundll32.exe 15 2204 rundll32.exe 16 2204 rundll32.exe -
Deletes itself 1 IoCs
Processes:
mumlltpsm.exepid process 2640 mumlltpsm.exe -
Executes dropped EXE 1 IoCs
Processes:
mumlltpsm.exepid process 2640 mumlltpsm.exe -
Loads dropped DLL 6 IoCs
Processes:
cmd.exerundll32.exepid process 2984 cmd.exe 2984 cmd.exe 2204 rundll32.exe 2204 rundll32.exe 2204 rundll32.exe 2204 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-1-5-21-481678230-3773327859-3495911762-1000\Software\Microsoft\Windows\CurrentVersion\Run\Dotx = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\Program Files\\ourga\\uhukfaz.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) \??\k: rundll32.exe File opened (read-only) \??\l: rundll32.exe File opened (read-only) \??\v: rundll32.exe File opened (read-only) \??\w: rundll32.exe File opened (read-only) \??\z: rundll32.exe File opened (read-only) \??\m: rundll32.exe File opened (read-only) \??\n: rundll32.exe File opened (read-only) \??\q: rundll32.exe File opened (read-only) \??\u: rundll32.exe File opened (read-only) \??\r: rundll32.exe File opened (read-only) \??\y: rundll32.exe File opened (read-only) \??\e: 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) \??\s: rundll32.exe File opened (read-only) \??\t: 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) \??\p: 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 2204 rundll32.exe -
Drops file in Program Files directory 2 IoCs
Processes:
mumlltpsm.exedescription ioc process File opened for modification \??\c:\Program Files\ourga mumlltpsm.exe File created \??\c:\Program Files\ourga\uhukfaz.dll mumlltpsm.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 2204 rundll32.exe 2204 rundll32.exe 2204 rundll32.exe 2204 rundll32.exe 2204 rundll32.exe 2204 rundll32.exe 2204 rundll32.exe 2204 rundll32.exe 2204 rundll32.exe 2204 rundll32.exe 2204 rundll32.exe 2204 rundll32.exe 2204 rundll32.exe 2204 rundll32.exe 2204 rundll32.exe 2204 rundll32.exe 2204 rundll32.exe 2204 rundll32.exe 2204 rundll32.exe 2204 rundll32.exe 2204 rundll32.exe 2204 rundll32.exe 2204 rundll32.exe 2204 rundll32.exe 2204 rundll32.exe 2204 rundll32.exe 2204 rundll32.exe 2204 rundll32.exe 2204 rundll32.exe 2204 rundll32.exe 2204 rundll32.exe 2204 rundll32.exe 2204 rundll32.exe 2204 rundll32.exe 2204 rundll32.exe 2204 rundll32.exe 2204 rundll32.exe 2204 rundll32.exe 2204 rundll32.exe 2204 rundll32.exe 2204 rundll32.exe 2204 rundll32.exe 2204 rundll32.exe 2204 rundll32.exe 2204 rundll32.exe 2204 rundll32.exe 2204 rundll32.exe 2204 rundll32.exe 2204 rundll32.exe 2204 rundll32.exe 2204 rundll32.exe 2204 rundll32.exe 2204 rundll32.exe 2204 rundll32.exe 2204 rundll32.exe 2204 rundll32.exe 2204 rundll32.exe 2204 rundll32.exe 2204 rundll32.exe 2204 rundll32.exe 2204 rundll32.exe 2204 rundll32.exe 2204 rundll32.exe 2204 rundll32.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
rundll32.exedescription pid process Token: SeDebugPrivilege 2204 rundll32.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
Processes:
a936358d2c1bc40cada39b3467e78138161a5c4be44143d2c16c8e13acc2f147.exemumlltpsm.exepid process 1648 a936358d2c1bc40cada39b3467e78138161a5c4be44143d2c16c8e13acc2f147.exe 2640 mumlltpsm.exe -
Suspicious use of WriteProcessMemory 19 IoCs
Processes:
a936358d2c1bc40cada39b3467e78138161a5c4be44143d2c16c8e13acc2f147.execmd.exemumlltpsm.exedescription pid process target process PID 1648 wrote to memory of 2984 1648 a936358d2c1bc40cada39b3467e78138161a5c4be44143d2c16c8e13acc2f147.exe cmd.exe PID 1648 wrote to memory of 2984 1648 a936358d2c1bc40cada39b3467e78138161a5c4be44143d2c16c8e13acc2f147.exe cmd.exe PID 1648 wrote to memory of 2984 1648 a936358d2c1bc40cada39b3467e78138161a5c4be44143d2c16c8e13acc2f147.exe cmd.exe PID 1648 wrote to memory of 2984 1648 a936358d2c1bc40cada39b3467e78138161a5c4be44143d2c16c8e13acc2f147.exe cmd.exe PID 2984 wrote to memory of 1228 2984 cmd.exe PING.EXE PID 2984 wrote to memory of 1228 2984 cmd.exe PING.EXE PID 2984 wrote to memory of 1228 2984 cmd.exe PING.EXE PID 2984 wrote to memory of 1228 2984 cmd.exe PING.EXE PID 2984 wrote to memory of 2640 2984 cmd.exe mumlltpsm.exe PID 2984 wrote to memory of 2640 2984 cmd.exe mumlltpsm.exe PID 2984 wrote to memory of 2640 2984 cmd.exe mumlltpsm.exe PID 2984 wrote to memory of 2640 2984 cmd.exe mumlltpsm.exe PID 2640 wrote to memory of 2204 2640 mumlltpsm.exe rundll32.exe PID 2640 wrote to memory of 2204 2640 mumlltpsm.exe rundll32.exe PID 2640 wrote to memory of 2204 2640 mumlltpsm.exe rundll32.exe PID 2640 wrote to memory of 2204 2640 mumlltpsm.exe rundll32.exe PID 2640 wrote to memory of 2204 2640 mumlltpsm.exe rundll32.exe PID 2640 wrote to memory of 2204 2640 mumlltpsm.exe rundll32.exe PID 2640 wrote to memory of 2204 2640 mumlltpsm.exe rundll32.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\a936358d2c1bc40cada39b3467e78138161a5c4be44143d2c16c8e13acc2f147.exe"C:\Users\Admin\AppData\Local\Temp\a936358d2c1bc40cada39b3467e78138161a5c4be44143d2c16c8e13acc2f147.exe"1⤵
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1648 -
C:\Windows\SysWOW64\cmd.execmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\mumlltpsm.exe "C:\Users\Admin\AppData\Local\Temp\a936358d2c1bc40cada39b3467e78138161a5c4be44143d2c16c8e13acc2f147.exe"2⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2984 -
C:\Windows\SysWOW64\PING.EXEping 127.0.0.1 -n 23⤵
- Runs ping.exe
PID:1228 -
C:\Users\Admin\AppData\Local\Temp\mumlltpsm.exeC:\Users\Admin\AppData\Local\Temp\\mumlltpsm.exe "C:\Users\Admin\AppData\Local\Temp\a936358d2c1bc40cada39b3467e78138161a5c4be44143d2c16c8e13acc2f147.exe"3⤵
- Deletes itself
- Executes dropped EXE
- Drops file in Program Files directory
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2640 -
\??\c:\windows\SysWOW64\rundll32.exec:\windows\system32\rundll32.exe "c:\Program Files\ourga\uhukfaz.dll",Verify C:\Users\Admin\AppData\Local\Temp\mumlltpsm.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:2204
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
228KB
MD54f1fd4bb8be6a930982fe19d1b20df5b
SHA16ead49dc3c3b65b6068f7d6c5af8b78ccc8f5fff
SHA256fd288afbf5024b589d4b691c03f6839bec49ef79755e9b36b393aff3e55ce9f4
SHA51274accffc2e6980e8c9ec7c0ce48a9fa7549e95c04d5eac875c1f75f154ba24fffba3803c34c28639a36ddd298e6045ee1266b26752308d9e11856c3d930ea4d0
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Filesize
406KB
MD53a2fff71ac82ea9515d022f6420f950b
SHA1ee6df0348584d021dbef6369aaf5f31921865293
SHA2563c668cf0d3c96553a2a8e6e1312bdaffcf17556bcaee4b2b23a7790dd5ba99ee
SHA512de95ac200d00391021eb702741072bc91024da9a93a2821676a53d8e31c1cb5ce0eb058617ae252f3e9e8cacd72b7c43fe5396573b659539c127bca55c7b74b3