11c8085ec0bfc6dac3254f7f4c34b7a82f62f6970c65ec063d50db7d527e5be0

Analysis

max time kernel
186s
max time network
199s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
04/12/2022, 02:31

Target

11c8085ec0bfc6dac3254f7f4c34b7a82f62f6970c65ec063d50db7d527e5be0.dll
Size

180KB
MD5

cd67d3e20a6763b2380627b747d5f450
SHA1

37c49e5454bddd0fc8da6c64974f753f2061e83a
SHA256

11c8085ec0bfc6dac3254f7f4c34b7a82f62f6970c65ec063d50db7d527e5be0
SHA512

e80205c50b62213188c3096aacb73293184f114ebbdf02e9f9cf97122780f7a164a609862586665d49bae29d2a8c4dd8b5f6a646556ed055a2453dc7b8f8f617
SSDEEP

3072:Cn4cV8gf2u41Z5tKlI1I+hcj0B/pTBpwtqrFZz63vB24FXnHKP:I4y8gOl2+6A20BtXfWvBlFXnHKP

Score

8^/10

upx

Executes dropped EXE 1 IoCs

pid	Process
1524	rundll32Srv.exe

UPX packed file 3 IoCs

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

resource	yara_rule
behavioral2/files/0x0006000000022e59-135.dat	upx
behavioral2/files/0x0006000000022e59-136.dat	upx
behavioral2/memory/1524-137-0x0000000000400000-0x000000000045B000-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
544	1524	WerFault.exe	83
4600	1524	WerFault.exe	83

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2896 wrote to memory of 3792	2896	rundll32.exe	82
PID 2896 wrote to memory of 3792	2896	rundll32.exe	82
PID 2896 wrote to memory of 3792	2896	rundll32.exe	82
PID 3792 wrote to memory of 1524	3792	rundll32.exe	83
PID 3792 wrote to memory of 1524	3792	rundll32.exe	83
PID 3792 wrote to memory of 1524	3792	rundll32.exe	83
PID 1524 wrote to memory of 544	1524	rundll32Srv.exe	85
PID 1524 wrote to memory of 544	1524	rundll32Srv.exe	85
PID 1524 wrote to memory of 544	1524	rundll32Srv.exe	85

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\11c8085ec0bfc6dac3254f7f4c34b7a82f62f6970c65ec063d50db7d527e5be0.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2896
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\11c8085ec0bfc6dac3254f7f4c34b7a82f62f6970c65ec063d50db7d527e5be0.dll,#1
  2⤵
  - Drops file in System32 directory
  - Suspicious use of WriteProcessMemory
  PID:3792
- - C:\Windows\SysWOW64\rundll32Srv.exe
    C:\Windows\SysWOW64\rundll32Srv.exe
    3⤵
    - Executes dropped EXE
    - Suspicious use of WriteProcessMemory
    PID:1524
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1524 -s 268
      4⤵
      Program crash
      PID:544
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1524 -s 268
      4⤵
      Program crash
      PID:4600

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 204 -p 1524 -ip 1524
1⤵
PID:1052

C:\Windows\SysWOW64\rundll32Srv.exe

Filesize
90KB

MD5
91b07c6f70654a26ca1cd8cde6fb2a7e

SHA1
789629859ed76191432fd7ab40cfa0487b580a6e

SHA256
37417b870c644d70c09c773b828dbb451e33d4e74df2f66d9698ae090d240d15

SHA512
077b62709e40c66304429acae5cccb953affa59791f2139d0b0e3e8a4610d38aa5dd6a44d9c857220245a9e746fb980a5dd0966d8b2795313ca7b6deeafd1dd2

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

Filesize
90KB

MD5
91b07c6f70654a26ca1cd8cde6fb2a7e

SHA1
789629859ed76191432fd7ab40cfa0487b580a6e

SHA256
37417b870c644d70c09c773b828dbb451e33d4e74df2f66d9698ae090d240d15

SHA512
077b62709e40c66304429acae5cccb953affa59791f2139d0b0e3e8a4610d38aa5dd6a44d9c857220245a9e746fb980a5dd0966d8b2795313ca7b6deeafd1dd2

Download Submit
memory/1524-137-0x0000000000400000-0x000000000045B000-memory.dmp

Filesize
364KB

Download
memory/3792-133-0x0000000010000000-0x000000001002E000-memory.dmp

Filesize
184KB

Download
memory/3792-138-0x0000000010000000-0x000000001002E000-memory.dmp

Filesize
184KB

Download