a95bd73e6a5d85b0917df4e6ce4c407c6a9b677e9d3da2a998b0de804e91c2c8

Analysis

max time kernel
130s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
04/12/2022, 02:01

Target

a95bd73e6a5d85b0917df4e6ce4c407c6a9b677e9d3da2a998b0de804e91c2c8.dll
Size

180KB
MD5

f9a0fd9594d9b8573c53772bc15d11e0
SHA1

492c0faad24bcd6ca6a362edd2f21f624d1645bd
SHA256

a95bd73e6a5d85b0917df4e6ce4c407c6a9b677e9d3da2a998b0de804e91c2c8
SHA512

4e4a1a064c5518005647891576af1564db473f6d6b7335fcb5386dcb6bc581eadfd0a300129fbb545bbf2f5ed31cfcfd9e42c88b5b8f532b9197b297d3e75d3f
SSDEEP

3072:en4cV8gf2u41Z5tKlH7CzACLtRk3OwquXvz7+IGqEJuj:M4y8gOl2xMA2X5uX7VGjJuj

Score

8^/10

upx

Executes dropped EXE 1 IoCs

pid	Process
396	rundll32Srv.exe

UPX packed file 3 IoCs

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

resource	yara_rule
behavioral2/files/0x001b00000001d9f9-135.dat	upx
behavioral2/files/0x001b00000001d9f9-136.dat	upx
behavioral2/memory/396-137-0x0000000000400000-0x000000000045A000-memory.dmp	upx

Drops file in System32 directory 1 IoCs

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

Program crash 2 IoCs

pid	pid_target	Process	procid_target
1116	396	WerFault.exe	81
4908	396	WerFault.exe	81

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 3356 wrote to memory of 4872	3356	rundll32.exe	80
PID 3356 wrote to memory of 4872	3356	rundll32.exe	80
PID 3356 wrote to memory of 4872	3356	rundll32.exe	80
PID 4872 wrote to memory of 396	4872	rundll32.exe	81
PID 4872 wrote to memory of 396	4872	rundll32.exe	81
PID 4872 wrote to memory of 396	4872	rundll32.exe	81
PID 396 wrote to memory of 1116	396	rundll32Srv.exe	85
PID 396 wrote to memory of 1116	396	rundll32Srv.exe	85
PID 396 wrote to memory of 1116	396	rundll32Srv.exe	85

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\a95bd73e6a5d85b0917df4e6ce4c407c6a9b677e9d3da2a998b0de804e91c2c8.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3356
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\a95bd73e6a5d85b0917df4e6ce4c407c6a9b677e9d3da2a998b0de804e91c2c8.dll,#1
  2⤵
  - Drops file in System32 directory
  - Suspicious use of WriteProcessMemory
  PID:4872
- - C:\Windows\SysWOW64\rundll32Srv.exe
    C:\Windows\SysWOW64\rundll32Srv.exe
    3⤵
    - Executes dropped EXE
    - Suspicious use of WriteProcessMemory
    PID:396
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 396 -s 268
      4⤵
      Program crash
      PID:1116
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 396 -s 268
      4⤵
      Program crash
      PID:4908

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 396 -ip 396
1⤵
PID:532

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/396-137-0x0000000000400000-0x000000000045A000-memory.dmp

Filesize
360KB

Download
memory/4872-133-0x0000000010000000-0x000000001002E000-memory.dmp

Filesize
184KB

Download