Analysis
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max time kernel
16s -
max time network
16s -
platform
windows7_x64 -
resource
win7-20240903-en -
resource tags
arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system -
submitted
05/10/2024, 01:53
Static task
static1
Behavioral task
behavioral1
Sample
b9d10140a4b19ca6327d7e319cf9bd88c897cdb7440b08bb9a82aebae1817e64N.dll
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
b9d10140a4b19ca6327d7e319cf9bd88c897cdb7440b08bb9a82aebae1817e64N.dll
Resource
win10v2004-20240802-en
General
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Target
b9d10140a4b19ca6327d7e319cf9bd88c897cdb7440b08bb9a82aebae1817e64N.dll
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Size
544KB
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MD5
003dbddc2b4d41825a920081a907eaf0
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SHA1
166ff4158ec03a589660017ed0ba35c0ca31e79e
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SHA256
b9d10140a4b19ca6327d7e319cf9bd88c897cdb7440b08bb9a82aebae1817e64
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SHA512
09fe14395b4a0b0cf2413403701d639f6a0b23224fc80f96177199b80fb92eaed5168cc0a91689111f7967f5044c7733a277b74f20553b281900cf1b44277f6f
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SSDEEP
12288:DhpUrEIZJqr1AkBWwNa5R0EYl795/amaX3QXaPKU5gqKQ:D/jG01NHXaPOvQ
Malware Config
Signatures
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Executes dropped EXE 1 IoCs
pid Process 2276 rundll32mgr.exe -
Loads dropped DLL 4 IoCs
pid Process 1860 rundll32.exe 1860 rundll32.exe 2276 rundll32mgr.exe 2276 rundll32mgr.exe -
Drops file in System32 directory 1 IoCs
description ioc Process File created C:\Windows\SysWOW64\rundll32mgr.exe rundll32.exe -
resource yara_rule behavioral1/memory/2276-13-0x0000000000400000-0x000000000042D000-memory.dmp upx behavioral1/memory/2276-19-0x0000000000400000-0x000000000042D000-memory.dmp upx -
Program crash 1 IoCs
pid pid_target Process procid_target 1880 1860 WerFault.exe 28 -
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 15 IoCs
description pid Process procid_target PID 2136 wrote to memory of 1860 2136 rundll32.exe 28 PID 2136 wrote to memory of 1860 2136 rundll32.exe 28 PID 2136 wrote to memory of 1860 2136 rundll32.exe 28 PID 2136 wrote to memory of 1860 2136 rundll32.exe 28 PID 2136 wrote to memory of 1860 2136 rundll32.exe 28 PID 2136 wrote to memory of 1860 2136 rundll32.exe 28 PID 2136 wrote to memory of 1860 2136 rundll32.exe 28 PID 1860 wrote to memory of 2276 1860 rundll32.exe 29 PID 1860 wrote to memory of 2276 1860 rundll32.exe 29 PID 1860 wrote to memory of 2276 1860 rundll32.exe 29 PID 1860 wrote to memory of 2276 1860 rundll32.exe 29 PID 1860 wrote to memory of 1880 1860 rundll32.exe 30 PID 1860 wrote to memory of 1880 1860 rundll32.exe 30 PID 1860 wrote to memory of 1880 1860 rundll32.exe 30 PID 1860 wrote to memory of 1880 1860 rundll32.exe 30
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\b9d10140a4b19ca6327d7e319cf9bd88c897cdb7440b08bb9a82aebae1817e64N.dll,#11⤵
- Suspicious use of WriteProcessMemory
PID:2136 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\b9d10140a4b19ca6327d7e319cf9bd88c897cdb7440b08bb9a82aebae1817e64N.dll,#12⤵
- Loads dropped DLL
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1860 -
C:\Windows\SysWOW64\rundll32mgr.exeC:\Windows\SysWOW64\rundll32mgr.exe3⤵
- Executes dropped EXE
- Loads dropped DLL
- System Location Discovery: System Language Discovery
PID:2276
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1860 -s 2323⤵
- Program crash
PID:1880
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
1.2MB
MD5d124f55b9393c976963407dff51ffa79
SHA12c7bbedd79791bfb866898c85b504186db610b5d
SHA256ea1e16247c848c8c171c4cd1fa17bc5a018a1fcb0c0dac25009066b6667b8eef
SHA512278fe3a4b1fbbe700e4f4483b610133e975e36e101455661d5197bd892a68839b9d555499040d200c92aefa9e3819380e395c0cd85d5fc845c6364d128a8cf06
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Filesize
1.1MB
MD59b98d47916ead4f69ef51b56b0c2323c
SHA1290a80b4ded0efc0fd00816f373fcea81a521330
SHA25696e0ae104c9662d0d20fdf59844c2d18334e5847b6c4fc7f8ce4b3b87f39887b
SHA51268b67021f228d8d71df4deb0b6388558b2f935a6aa466a12199cd37ada47ee588ea407b278d190d3a498b0ef3f5f1a2573a469b7ea5561ab2e7055c45565fe94
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Filesize
84KB
MD5797ea3998080a8d64bd071ac749c2285
SHA124e7d2db6d27265a936c72b16a14b31910a55df6
SHA256cc2bd6be44d951965e960882aa128f0aa18e805e33a4cf99952ca5387007a1a5
SHA5128656020cd52e46902058ce6eca6d823e8a84228cef10c30af05c48353c159e510baed333e19c29d25bd9e6e0a5bcdcfa1dcf053cf8544ad4bfe11392efdc088c