Analysis
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max time kernel
122s -
max time network
122s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
29/03/2024, 22:57
Static task
static1
Behavioral task
behavioral1
Sample
86fef9a0b3ebbc4c1ec52112056e6e21e79b6447bf28a8b1e13d2783fd120f9f.dll
Resource
win7-20240221-en
General
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Target
86fef9a0b3ebbc4c1ec52112056e6e21e79b6447bf28a8b1e13d2783fd120f9f.dll
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Size
348KB
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MD5
aef998d9264fb3854bc677b69ea2c036
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SHA1
3eb134a014c0bcc9edbfda27103b4dff13dd34ec
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SHA256
86fef9a0b3ebbc4c1ec52112056e6e21e79b6447bf28a8b1e13d2783fd120f9f
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SHA512
80a9d44c5989c53b43f5c35a033f6e4a4795c5a40336ffdc4e7759bb0b775f834e6bcd8186d6d13dcdf78c501e9fe0dd23ff1ecd84651c33a79d07b9419b3494
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SSDEEP
3072:cfRBoFWlyQNZhFGVl4LSz1RNeyOb2EqMGzs4VlS0q0Ebs:cpdHNr4Vl4LSz1RZOyEqMj4VlS0q0ks
Malware Config
Signatures
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UPX dump on OEP (original entry point) 3 IoCs
resource yara_rule behavioral1/memory/2180-14-0x0000000000400000-0x0000000000432000-memory.dmp UPX behavioral1/memory/2180-12-0x00000000003C0000-0x00000000003F2000-memory.dmp UPX behavioral1/memory/2180-25-0x0000000000400000-0x0000000000432000-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 2180 rundll32mgr.exe -
Loads dropped DLL 4 IoCs
pid Process 1852 rundll32.exe 1852 rundll32.exe 2180 rundll32mgr.exe 2180 rundll32mgr.exe -
resource yara_rule behavioral1/memory/2180-14-0x0000000000400000-0x0000000000432000-memory.dmp upx behavioral1/memory/2180-25-0x0000000000400000-0x0000000000432000-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 2604 2180 WerFault.exe 29 -
Suspicious use of WriteProcessMemory 11 IoCs
description pid Process procid_target PID 1508 wrote to memory of 1852 1508 rundll32.exe 28 PID 1508 wrote to memory of 1852 1508 rundll32.exe 28 PID 1508 wrote to memory of 1852 1508 rundll32.exe 28 PID 1508 wrote to memory of 1852 1508 rundll32.exe 28 PID 1508 wrote to memory of 1852 1508 rundll32.exe 28 PID 1508 wrote to memory of 1852 1508 rundll32.exe 28 PID 1508 wrote to memory of 1852 1508 rundll32.exe 28 PID 1852 wrote to memory of 2180 1852 rundll32.exe 29 PID 1852 wrote to memory of 2180 1852 rundll32.exe 29 PID 1852 wrote to memory of 2180 1852 rundll32.exe 29 PID 1852 wrote to memory of 2180 1852 rundll32.exe 29
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\86fef9a0b3ebbc4c1ec52112056e6e21e79b6447bf28a8b1e13d2783fd120f9f.dll,#11⤵
- Suspicious use of WriteProcessMemory
PID:1508 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\86fef9a0b3ebbc4c1ec52112056e6e21e79b6447bf28a8b1e13d2783fd120f9f.dll,#12⤵
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
PID:1852 -
C:\Windows\SysWOW64\rundll32mgr.exeC:\Windows\SysWOW64\rundll32mgr.exe3⤵
- Executes dropped EXE
- Loads dropped DLL
PID:2180 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 2180 -s 1804⤵
- Program crash
PID:2604
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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