Analysis
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max time kernel
95s -
max time network
97s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
17-12-2024 20:05
Static task
static1
Behavioral task
behavioral1
Sample
7a1231044afd18c275a53097ee602857e522e47d9002e766b5dd53599fa3b3e8.dll
Resource
win7-20240903-en
General
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Target
7a1231044afd18c275a53097ee602857e522e47d9002e766b5dd53599fa3b3e8.dll
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Size
248KB
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MD5
7d4b0c996fe0a8f1bb1df08f6dbf6a40
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SHA1
f72736bdfdb999d2e1a4f30f7c61558415582e15
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SHA256
7a1231044afd18c275a53097ee602857e522e47d9002e766b5dd53599fa3b3e8
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SHA512
b2d64a5afd9b6b5c5e514463e0800d20984974738237be685a464a795c5c92bd6f212ba1c175b3f175d86b381b554fb1110e80271b9ac0e319eb1ef747bb712d
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SSDEEP
3072:taEZWj7MjLm4xNq5qg606u9YKuGmUKGOtdnVF8SYbQRtKX3lywX98qsQI+AX1:f2tvKXLViSYeKXVyl8I+AX1
Malware Config
Signatures
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Ramnit family
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Executes dropped EXE 1 IoCs
pid Process 3532 rundll32mgr.exe -
Loads dropped DLL 1 IoCs
pid Process 3532 rundll32mgr.exe -
Drops file in System32 directory 1 IoCs
description ioc Process File created C:\Windows\SysWOW64\rundll32mgr.exe rundll32.exe -
resource yara_rule behavioral2/memory/3532-5-0x0000000000400000-0x000000000042A000-memory.dmp upx -
Program crash 1 IoCs
pid pid_target Process procid_target 2736 3532 WerFault.exe 86 -
System Location Discovery: System Language Discovery 1 TTPs 2 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 rundll32.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language rundll32mgr.exe -
Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 4996 wrote to memory of 4900 4996 rundll32.exe 85 PID 4996 wrote to memory of 4900 4996 rundll32.exe 85 PID 4996 wrote to memory of 4900 4996 rundll32.exe 85 PID 4900 wrote to memory of 3532 4900 rundll32.exe 86 PID 4900 wrote to memory of 3532 4900 rundll32.exe 86 PID 4900 wrote to memory of 3532 4900 rundll32.exe 86
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\7a1231044afd18c275a53097ee602857e522e47d9002e766b5dd53599fa3b3e8.dll,#11⤵
- Suspicious use of WriteProcessMemory
PID:4996 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\7a1231044afd18c275a53097ee602857e522e47d9002e766b5dd53599fa3b3e8.dll,#12⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4900 -
C:\Windows\SysWOW64\rundll32mgr.exeC:\Windows\SysWOW64\rundll32mgr.exe3⤵
- Executes dropped EXE
- Loads dropped DLL
- System Location Discovery: System Language Discovery
PID:3532 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 3532 -s 4764⤵
- Program crash
PID:2736
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 3532 -ip 35321⤵PID:2648
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
1.6MB
MD54f3387277ccbd6d1f21ac5c07fe4ca68
SHA1e16506f662dc92023bf82def1d621497c8ab5890
SHA256767a3fc4a7a6818cdc3f0b99aaa95db694f6bcde719d2057a88b3d4df3d74fac
SHA5129da199ac69e3c0d4e0c6307e0ab8178f12cc25cb2f14c3511f6b64e6e60a925c860f3263cb38353a97b55a71ef4d27f8cb7fa3cfc08e7c1a349fd8d209dfa219
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Filesize
106KB
MD57657fcb7d772448a6d8504e4b20168b8
SHA184c7201f7e59cb416280fd69a2e7f2e349ec8242
SHA25654bc950d46a0d1aa72048a17c8275743209e6c17bdacfc4cb9601c9ce3ec9a71
SHA512786addd2a793bd4123625b22dc717d193246442ac97f1c3f4a763ec794b48e68051cd41097c0e9f7367e6914534f36eafccb109ab03dc793d68bf1522e7884e2