Analysis
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max time kernel
122s -
max time network
127s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
29/03/2024, 20:18
Static task
static1
Behavioral task
behavioral1
Sample
3e7f64c33334217bb38d13c8d5f809cd1578d8959e52e64339750e8a4ac6e4dd.dll
Resource
win7-20240221-en
General
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Target
3e7f64c33334217bb38d13c8d5f809cd1578d8959e52e64339750e8a4ac6e4dd.dll
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Size
356KB
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MD5
beb87f3dbe2f6921ba90b7823c57e131
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SHA1
0c602edba024a68b042607323adfee52c38bd59c
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SHA256
3e7f64c33334217bb38d13c8d5f809cd1578d8959e52e64339750e8a4ac6e4dd
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SHA512
91f004ab1adbea64c9201859b04c58e577bbb5dc5473f11fa562805a039fe8245be8781adb3289dac61d8cc5d072479dbb1d99f14e835eff9a8600c8c0e8d98b
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SSDEEP
3072:0fJChtSplyQNZhFx6fLSz1RNeyOb2EqMGzs4VlS0q0Ep:0hRHNrT6fLSz1RZOyEqMj4VlS0q0K
Malware Config
Signatures
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UPX dump on OEP (original entry point) 3 IoCs
resource yara_rule behavioral1/memory/2888-11-0x0000000000400000-0x0000000000432000-memory.dmp UPX behavioral1/memory/2888-13-0x0000000000220000-0x0000000000252000-memory.dmp UPX behavioral1/memory/2888-23-0x0000000000400000-0x0000000000432000-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 2888 rundll32mgr.exe -
Loads dropped DLL 4 IoCs
pid Process 2720 rundll32.exe 2720 rundll32.exe 2888 rundll32mgr.exe 2888 rundll32mgr.exe -
resource yara_rule behavioral1/memory/2888-11-0x0000000000400000-0x0000000000432000-memory.dmp upx behavioral1/memory/2888-23-0x0000000000400000-0x0000000000432000-memory.dmp upx -
Drops file in System32 directory 1 IoCs
description ioc Process File created C:\Windows\SysWOW64\rundll32mgr.exe rundll32.exe -
Program crash 1 IoCs
pid pid_target Process procid_target 2764 2888 WerFault.exe 29 -
Suspicious use of WriteProcessMemory 11 IoCs
description pid Process procid_target PID 2460 wrote to memory of 2720 2460 rundll32.exe 28 PID 2460 wrote to memory of 2720 2460 rundll32.exe 28 PID 2460 wrote to memory of 2720 2460 rundll32.exe 28 PID 2460 wrote to memory of 2720 2460 rundll32.exe 28 PID 2460 wrote to memory of 2720 2460 rundll32.exe 28 PID 2460 wrote to memory of 2720 2460 rundll32.exe 28 PID 2460 wrote to memory of 2720 2460 rundll32.exe 28 PID 2720 wrote to memory of 2888 2720 rundll32.exe 29 PID 2720 wrote to memory of 2888 2720 rundll32.exe 29 PID 2720 wrote to memory of 2888 2720 rundll32.exe 29 PID 2720 wrote to memory of 2888 2720 rundll32.exe 29
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\3e7f64c33334217bb38d13c8d5f809cd1578d8959e52e64339750e8a4ac6e4dd.dll,#11⤵
- Suspicious use of WriteProcessMemory
PID:2460 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\3e7f64c33334217bb38d13c8d5f809cd1578d8959e52e64339750e8a4ac6e4dd.dll,#12⤵
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
PID:2720 -
C:\Windows\SysWOW64\rundll32mgr.exeC:\Windows\SysWOW64\rundll32mgr.exe3⤵
- Executes dropped EXE
- Loads dropped DLL
PID:2888 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 2888 -s 1804⤵
- Program crash
PID:2764
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Network
MITRE ATT&CK Matrix
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
157KB
MD52ad7467eeceedd64b8bd4f6e04c3cd49
SHA1d6c5d9878dc49ae9b531d61283609e207154a921
SHA2562aab17b2f18dfb70cd737b27b1a438ad8878889070a6e025b3684483054f60c9
SHA5127a647d4a8de90d11cd5afb82ace8354869af0893f28afcf9491d1d4de421315d9a394a5d3462d88c0eff6c5a7a4ed41897d8d0498b59b4b7428ddbb61786be2a