Analysis
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max time kernel
122s -
max time network
131s -
platform
windows7_x64 -
resource
win7-20231023-en -
resource tags
arch:x64arch:x86image:win7-20231023-enlocale:en-usos:windows7-x64system -
submitted
30-11-2023 03:09
Static task
static1
Behavioral task
behavioral1
Sample
b53546a6a0a077d785dc1264fe176cf385e89690a5ef6c656ba6429b4fc87083.dll
Resource
win7-20231023-en
General
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Target
b53546a6a0a077d785dc1264fe176cf385e89690a5ef6c656ba6429b4fc87083.dll
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Size
3.0MB
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MD5
620db58f837e307fd56c7633d4e4b7e4
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SHA1
cedd5323f79070d4e8284fba65fda0d6c3713e3a
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SHA256
b53546a6a0a077d785dc1264fe176cf385e89690a5ef6c656ba6429b4fc87083
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SHA512
a9fc9804a8a17b287a8295dfe64684e24fb618013373aaac0b95e35a1781c7949017ccb07362a269acddb6cda549f3cc34442d7cb703b0822f7171c3945470f1
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SSDEEP
49152:vFNDwsjARb30i4viSRuDVPTormjvBWBfh8Ea:91jziEcV7LX
Malware Config
Signatures
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Executes dropped EXE 1 IoCs
Processes:
rundll32mgr.exepid process 1616 rundll32mgr.exe -
Loads dropped DLL 4 IoCs
Processes:
rundll32.exerundll32mgr.exepid process 2868 rundll32.exe 2868 rundll32.exe 1616 rundll32mgr.exe 1616 rundll32mgr.exe -
Processes:
resource yara_rule behavioral1/memory/1616-23-0x0000000000400000-0x000000000042A000-memory.dmp upx -
Drops file in System32 directory 1 IoCs
Processes:
rundll32.exedescription ioc process File created C:\Windows\SysWOW64\rundll32mgr.exe rundll32.exe -
Program crash 1 IoCs
Processes:
WerFault.exepid pid_target process target process 2616 1616 WerFault.exe rundll32mgr.exe -
Suspicious use of WriteProcessMemory 11 IoCs
Processes:
rundll32.exerundll32.exedescription pid process target process PID 2988 wrote to memory of 2868 2988 rundll32.exe rundll32.exe PID 2988 wrote to memory of 2868 2988 rundll32.exe rundll32.exe PID 2988 wrote to memory of 2868 2988 rundll32.exe rundll32.exe PID 2988 wrote to memory of 2868 2988 rundll32.exe rundll32.exe PID 2988 wrote to memory of 2868 2988 rundll32.exe rundll32.exe PID 2988 wrote to memory of 2868 2988 rundll32.exe rundll32.exe PID 2988 wrote to memory of 2868 2988 rundll32.exe rundll32.exe PID 2868 wrote to memory of 1616 2868 rundll32.exe rundll32mgr.exe PID 2868 wrote to memory of 1616 2868 rundll32.exe rundll32mgr.exe PID 2868 wrote to memory of 1616 2868 rundll32.exe rundll32mgr.exe PID 2868 wrote to memory of 1616 2868 rundll32.exe rundll32mgr.exe
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\b53546a6a0a077d785dc1264fe176cf385e89690a5ef6c656ba6429b4fc87083.dll,#11⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\b53546a6a0a077d785dc1264fe176cf385e89690a5ef6c656ba6429b4fc87083.dll,#12⤵
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\rundll32mgr.exeC:\Windows\SysWOW64\rundll32mgr.exe3⤵
- Executes dropped EXE
- Loads dropped DLL
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1616 -s 1804⤵
- Program crash
Network
MITRE ATT&CK Matrix
Replay Monitor
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Downloads
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C:\Windows\SysWOW64\rundll32mgr.exeFilesize
184KB
MD51d92c741bc5b2d34dcd0a0265ab54275
SHA1a160982825420567c15f6c11f777cb4ccbe69bb8
SHA2563aab3cf37efd4c034da13a0d7ba8725f49a21d227e05f3bba91d8d36350f4a67
SHA5121da728dba6383e0e9fc51370f8fb782a15e724b57b952d952e4c719f81d517a56035b1e9496da3d7f9bf79af0a4bd5caa8a351ca60f40d637da3648224944b94
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C:\Windows\SysWOW64\rundll32mgr.exeFilesize
184KB
MD51d92c741bc5b2d34dcd0a0265ab54275
SHA1a160982825420567c15f6c11f777cb4ccbe69bb8
SHA2563aab3cf37efd4c034da13a0d7ba8725f49a21d227e05f3bba91d8d36350f4a67
SHA5121da728dba6383e0e9fc51370f8fb782a15e724b57b952d952e4c719f81d517a56035b1e9496da3d7f9bf79af0a4bd5caa8a351ca60f40d637da3648224944b94
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\Users\Admin\AppData\Local\Temp\~TM5061.tmpFilesize
1.2MB
MD5d124f55b9393c976963407dff51ffa79
SHA12c7bbedd79791bfb866898c85b504186db610b5d
SHA256ea1e16247c848c8c171c4cd1fa17bc5a018a1fcb0c0dac25009066b6667b8eef
SHA512278fe3a4b1fbbe700e4f4483b610133e975e36e101455661d5197bd892a68839b9d555499040d200c92aefa9e3819380e395c0cd85d5fc845c6364d128a8cf06
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\Users\Admin\AppData\Local\Temp\~TM50DF.tmpFilesize
1.1MB
MD59b98d47916ead4f69ef51b56b0c2323c
SHA1290a80b4ded0efc0fd00816f373fcea81a521330
SHA25696e0ae104c9662d0d20fdf59844c2d18334e5847b6c4fc7f8ce4b3b87f39887b
SHA51268b67021f228d8d71df4deb0b6388558b2f935a6aa466a12199cd37ada47ee588ea407b278d190d3a498b0ef3f5f1a2573a469b7ea5561ab2e7055c45565fe94
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\Windows\SysWOW64\rundll32mgr.exeFilesize
184KB
MD51d92c741bc5b2d34dcd0a0265ab54275
SHA1a160982825420567c15f6c11f777cb4ccbe69bb8
SHA2563aab3cf37efd4c034da13a0d7ba8725f49a21d227e05f3bba91d8d36350f4a67
SHA5121da728dba6383e0e9fc51370f8fb782a15e724b57b952d952e4c719f81d517a56035b1e9496da3d7f9bf79af0a4bd5caa8a351ca60f40d637da3648224944b94
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\Windows\SysWOW64\rundll32mgr.exeFilesize
184KB
MD51d92c741bc5b2d34dcd0a0265ab54275
SHA1a160982825420567c15f6c11f777cb4ccbe69bb8
SHA2563aab3cf37efd4c034da13a0d7ba8725f49a21d227e05f3bba91d8d36350f4a67
SHA5121da728dba6383e0e9fc51370f8fb782a15e724b57b952d952e4c719f81d517a56035b1e9496da3d7f9bf79af0a4bd5caa8a351ca60f40d637da3648224944b94
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memory/1616-20-0x00000000773F0000-0x00000000773F1000-memory.dmpFilesize
4KB
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memory/1616-16-0x0000000000220000-0x000000000024A000-memory.dmpFilesize
168KB
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memory/1616-19-0x00000000773EF000-0x00000000773F1000-memory.dmpFilesize
8KB
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memory/1616-21-0x00000000773F0000-0x00000000773F2000-memory.dmpFilesize
8KB
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memory/1616-23-0x0000000000400000-0x000000000042A000-memory.dmpFilesize
168KB
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memory/1616-22-0x00000000753E0000-0x00000000754F0000-memory.dmpFilesize
1.1MB
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memory/1616-24-0x00000000753E0000-0x00000000754F0000-memory.dmpFilesize
1.1MB
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memory/1616-26-0x00000000753E0000-0x00000000754F0000-memory.dmpFilesize
1.1MB
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memory/2868-13-0x00000000745A0000-0x00000000749D5000-memory.dmpFilesize
4.2MB
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memory/2868-15-0x0000000074160000-0x0000000074595000-memory.dmpFilesize
4.2MB
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memory/2868-9-0x0000000074160000-0x0000000074595000-memory.dmpFilesize
4.2MB
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memory/2868-2-0x00000000745A0000-0x00000000749D5000-memory.dmpFilesize
4.2MB