Analysis
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max time kernel
149s -
max time network
152s -
platform
windows10-2004_x64 -
resource
win10v2004-20240412-en -
resource tags
arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system -
submitted
20-04-2024 07:14
Static task
static1
Behavioral task
behavioral1
Sample
139744649f9a32633bdf75d82805a37483702380c2012b0b9750bf2b150f3f2f.dll
Resource
win7-20231129-en
Behavioral task
behavioral2
Sample
139744649f9a32633bdf75d82805a37483702380c2012b0b9750bf2b150f3f2f.dll
Resource
win10v2004-20240412-en
General
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Target
139744649f9a32633bdf75d82805a37483702380c2012b0b9750bf2b150f3f2f.dll
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Size
240KB
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MD5
01e8485506b49cb98fe627c60f06819d
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SHA1
128293079a7573d1fab9c972bd2bc26878288c2d
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SHA256
139744649f9a32633bdf75d82805a37483702380c2012b0b9750bf2b150f3f2f
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SHA512
5a254ca43433537a2513b530b4f3bf142e50a7127f628da69b4f6edfdf9863412eebb811c87923479c14c282830419c6428a7ea90eab9649e263d628f10c14b2
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SSDEEP
6144:65r3lV6n42+3WSKhxD8RVo2rcaGKNqAwyotp2u:6C+3xWDY9IpKNTwyoz
Malware Config
Signatures
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Blocklisted process makes network request 7 IoCs
Processes:
rundll32.exeflow pid process 23 892 rundll32.exe 68 892 rundll32.exe 76 892 rundll32.exe 77 892 rundll32.exe 106 892 rundll32.exe 197 892 rundll32.exe 223 892 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-1-5-21-259785868-298165991-4178590326-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Platform = "C:\\Windows\\SysWOW64\\rundll32.exe \"C:\\Users\\Admin\\AppData\\Local\\Temp\\139744649f9a32633bdf75d82805a37483702380c2012b0b9750bf2b150f3f2f.dll\",Erase" 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) \??\i: rundll32.exe File opened (read-only) \??\k: rundll32.exe File opened (read-only) \??\n: rundll32.exe File opened (read-only) \??\r: rundll32.exe File opened (read-only) \??\t: rundll32.exe File opened (read-only) \??\u: rundll32.exe File opened (read-only) \??\e: rundll32.exe File opened (read-only) \??\g: rundll32.exe File opened (read-only) \??\z: rundll32.exe File opened (read-only) \??\w: rundll32.exe File opened (read-only) \??\b: rundll32.exe File opened (read-only) \??\m: rundll32.exe File opened (read-only) \??\q: rundll32.exe File opened (read-only) \??\s: rundll32.exe File opened (read-only) \??\l: rundll32.exe File opened (read-only) \??\p: rundll32.exe File opened (read-only) \??\j: rundll32.exe File opened (read-only) \??\o: rundll32.exe File opened (read-only) \??\v: 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) \??\h: 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 -
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 value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString rundll32.exe Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 rundll32.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
rundll32.exepid process 892 rundll32.exe 892 rundll32.exe 892 rundll32.exe 892 rundll32.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
rundll32.exedescription pid process Token: SeDebugPrivilege 892 rundll32.exe -
Suspicious use of WriteProcessMemory 3 IoCs
Processes:
rundll32.exedescription pid process target process PID 3132 wrote to memory of 892 3132 rundll32.exe rundll32.exe PID 3132 wrote to memory of 892 3132 rundll32.exe rundll32.exe PID 3132 wrote to memory of 892 3132 rundll32.exe rundll32.exe
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\139744649f9a32633bdf75d82805a37483702380c2012b0b9750bf2b150f3f2f.dll,#11⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\139744649f9a32633bdf75d82805a37483702380c2012b0b9750bf2b150f3f2f.dll,#12⤵
- Blocklisted process makes network request
- Adds Run key to start application
- Enumerates connected drives
- Writes to the Master Boot Record (MBR)
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Matrix ATT&CK v13
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
1