be23ba1629b95f90538753d5eca01909431fe880d1f8fca627ab036ca8dd02f0

Analysis

max time kernel
91s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20220901-en
resource tags

arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
submitted
04/12/2022, 01:57

Target

be23ba1629b95f90538753d5eca01909431fe880d1f8fca627ab036ca8dd02f0.dll
Size

180KB
MD5

d3cfeb2fff051c170cf1e874af3b6300
SHA1

5ec026d8bb6b1bb506ac1b484478c036a181021e
SHA256

be23ba1629b95f90538753d5eca01909431fe880d1f8fca627ab036ca8dd02f0
SHA512

4c43f4ea33aa7f4de561244dcc57cfb0d431ab3ab95c57529ff2a65e53be6e0055efb950ebc335be09c38dfdff50cee32841c38c5e801506ec94c1773af0af9d
SSDEEP

3072:wn4cV8gf2u41Z5tKlr78vicYq2tRtuNXF6Ge:q4y8gOl2578vicIUF6

Score

8^/10

upx

Executes dropped EXE 1 IoCs

pid	Process
4720	rundll32Srv.exe

UPX packed file 3 IoCs

Detects executables packed with UPX/modified UPX open source packer.

resource	yara_rule
behavioral2/files/0x0007000000022de8-135.dat	upx
behavioral2/files/0x0007000000022de8-134.dat	upx
behavioral2/memory/4720-136-0x0000000000400000-0x000000000045A000-memory.dmp	upx

Drops file in System32 directory 1 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\rundll32Srv.exe	rundll32.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3928	4720	WerFault.exe	83

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3248 wrote to memory of 1984	3248	rundll32.exe	82
PID 3248 wrote to memory of 1984	3248	rundll32.exe	82
PID 3248 wrote to memory of 1984	3248	rundll32.exe	82
PID 1984 wrote to memory of 4720	1984	rundll32.exe	83
PID 1984 wrote to memory of 4720	1984	rundll32.exe	83
PID 1984 wrote to memory of 4720	1984	rundll32.exe	83

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\be23ba1629b95f90538753d5eca01909431fe880d1f8fca627ab036ca8dd02f0.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3248
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\be23ba1629b95f90538753d5eca01909431fe880d1f8fca627ab036ca8dd02f0.dll,#1
  2⤵
  - Drops file in System32 directory
  - Suspicious use of WriteProcessMemory
  PID:1984
- - C:\Windows\SysWOW64\rundll32Srv.exe
    C:\Windows\SysWOW64\rundll32Srv.exe
    3⤵
    - Executes dropped EXE
    PID:4720
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4720 -s 268
      4⤵
      Program crash
      PID:3928

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 4720 -ip 4720
1⤵
PID:452

C:\Windows\SysWOW64\rundll32Srv.exe

Filesize
90KB

MD5
dba1231fa077c41836df91398093d5a8

SHA1
9bd1adff712907f1cbff38194e7229af5d9b2938

SHA256
10576d998ccc0c450ac3bb8199eda18f5dd01336101eb1cfe357f33b520b5f0a

SHA512
ec8f9d266a926010b94cb244e2ef90704a1209cafa18d80af9637fa81d56a929aa2a9d4ebbdd1b86a1d9cf632ddbd0f0f86e5894aa8248784518f2153e509a1f

Download Submit
C:\Windows\SysWOW64\rundll32Srv.exe

Filesize
90KB

MD5
dba1231fa077c41836df91398093d5a8

SHA1
9bd1adff712907f1cbff38194e7229af5d9b2938

SHA256
10576d998ccc0c450ac3bb8199eda18f5dd01336101eb1cfe357f33b520b5f0a

SHA512
ec8f9d266a926010b94cb244e2ef90704a1209cafa18d80af9637fa81d56a929aa2a9d4ebbdd1b86a1d9cf632ddbd0f0f86e5894aa8248784518f2153e509a1f

Download Submit
memory/4720-136-0x0000000000400000-0x000000000045A000-memory.dmp

Filesize
360KB

Download