Analysis
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max time kernel
32s -
max time network
16s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
29-03-2024 11:55
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
4123.dll
Resource
win7-20240221-en
windows7-x64
4 signatures
60 seconds
General
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Target
4123.dll
-
Size
48KB
-
MD5
f776deb4df137b37dcae5406c8f3a07a
-
SHA1
f6a31b594fca39c118927405fa4d14353b8fd49a
-
SHA256
93cc5e6a6b671d9b0124ade32ae8b09269de9f03c5c5e66347fbfc7a8c3b305e
-
SHA512
4077b4214b4683bb4776d470027e61fcc3cb3e78beb9377674e4a4de9115d52911e39cb29a566ab446c6962a252ce01020ffd616b5854a9d8230414262bfafe2
-
SSDEEP
768:fw2jnhaqqUgQeONXr27iLAkfP69FyfQZWBS:hjnEQeON727CA2G
Malware Config
Signatures
-
Nloader payload 4 IoCs
Processes:
resource yara_rule behavioral1/memory/2364-4-0x00000000001B0000-0x00000000001B6000-memory.dmp nloader behavioral1/memory/2364-3-0x00000000001C0000-0x00000000001C9000-memory.dmp nloader behavioral1/memory/2364-8-0x00000000001D0000-0x00000000001D7000-memory.dmp nloader behavioral1/memory/2364-12-0x00000000001F0000-0x00000000001F5000-memory.dmp nloader -
Program crash 1 IoCs
Processes:
WerFault.exepid pid_target process target process 2552 2364 WerFault.exe rundll32.exe -
Suspicious use of WriteProcessMemory 11 IoCs
Processes:
rundll32.exerundll32.exedescription pid process target process PID 2352 wrote to memory of 2364 2352 rundll32.exe rundll32.exe PID 2352 wrote to memory of 2364 2352 rundll32.exe rundll32.exe PID 2352 wrote to memory of 2364 2352 rundll32.exe rundll32.exe PID 2352 wrote to memory of 2364 2352 rundll32.exe rundll32.exe PID 2352 wrote to memory of 2364 2352 rundll32.exe rundll32.exe PID 2352 wrote to memory of 2364 2352 rundll32.exe rundll32.exe PID 2352 wrote to memory of 2364 2352 rundll32.exe rundll32.exe PID 2364 wrote to memory of 2552 2364 rundll32.exe WerFault.exe PID 2364 wrote to memory of 2552 2364 rundll32.exe WerFault.exe PID 2364 wrote to memory of 2552 2364 rundll32.exe WerFault.exe PID 2364 wrote to memory of 2552 2364 rundll32.exe WerFault.exe
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\4123.dll,#11⤵
- Suspicious use of WriteProcessMemory
PID:2352 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\4123.dll,#12⤵
- Suspicious use of WriteProcessMemory
PID:2364 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 2364 -s 4563⤵
- Program crash
PID:2552