b4b7af3b6e87b484b8d9ddf0f4b857327ba2c1706f5f2186d2d54ed048a69fc1

Analysis

max time kernel
118s
max time network
119s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
17/05/2024, 13:58

Target

b4b7af3b6e87b484b8d9ddf0f4b857327ba2c1706f5f2186d2d54ed048a69fc1.dll
Size

223KB
MD5

b0d9f0f5963275b61c377875217f6a67
SHA1

4d69fd32bb4324cf49c3611d35048e2dd86e5473
SHA256

b4b7af3b6e87b484b8d9ddf0f4b857327ba2c1706f5f2186d2d54ed048a69fc1
SHA512

4e792ab9a723a8e6555b33b82a16978584cbc2eda7e4804b83ba72b50fe12772ce3b8f76366a98c3fa83c4fee565e34473e1e9f317c73b9992c27e04d7cd308c
SSDEEP

3072:6huf5AUWG7xJvK2agufAnAZdlGZxIOtY81fs2lQBV+UdE+rECWp7hKWe:ZBAUWG7DVagufYLIBV+UdvrEFp7hKWe

Score

7^/10

upx

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral1/files/0x000c000000013187-1.dat	acprotect

Loads dropped DLL 1 IoCs

pid	Process
2200	rundll32.exe

UPX packed file 3 IoCs

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

resource	yara_rule
behavioral1/files/0x000c000000013187-1.dat	upx
behavioral1/memory/2200-3-0x0000000000240000-0x0000000000270000-memory.dmp	upx
behavioral1/memory/2200-4-0x0000000000240000-0x0000000000270000-memory.dmp	upx

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\System\symsrv.dll	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1720 wrote to memory of 2200	1720	rundll32.exe	28
PID 1720 wrote to memory of 2200	1720	rundll32.exe	28
PID 1720 wrote to memory of 2200	1720	rundll32.exe	28
PID 1720 wrote to memory of 2200	1720	rundll32.exe	28
PID 1720 wrote to memory of 2200	1720	rundll32.exe	28
PID 1720 wrote to memory of 2200	1720	rundll32.exe	28
PID 1720 wrote to memory of 2200	1720	rundll32.exe	28

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\b4b7af3b6e87b484b8d9ddf0f4b857327ba2c1706f5f2186d2d54ed048a69fc1.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1720
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\b4b7af3b6e87b484b8d9ddf0f4b857327ba2c1706f5f2186d2d54ed048a69fc1.dll,#1
  2⤵
  - Loads dropped DLL
  - Drops file in Program Files directory
  PID:2200

\Program Files\Common Files\System\symsrv.dll

Filesize
67KB

MD5
7574cf2c64f35161ab1292e2f532aabf

SHA1
14ba3fa927a06224dfe587014299e834def4644f

SHA256
de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085

SHA512
4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

Download Submit
memory/2200-3-0x0000000000240000-0x0000000000270000-memory.dmp

Filesize
192KB

Download
memory/2200-4-0x0000000000240000-0x0000000000270000-memory.dmp

Filesize
192KB

Download