a79452d99a609ea5b21c084672e13fd726c329dfa1d29d07a4288c9d9ad554bc

Analysis

max time kernel
136s
max time network
52s
platform
windows7_x64
resource
win7-20220901-en
resource tags

arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
submitted
24-11-2022 22:11

Target

0-255.pbf
Size

73KB
MD5

2b5e5142ea2c9322aeb61fd5dbd7c969
SHA1

b58544d7fa81ad0c026f5b5e49ac56ddfa228c02
SHA256

a79452d99a609ea5b21c084672e13fd726c329dfa1d29d07a4288c9d9ad554bc
SHA512

6944dea0008535ec8f7a0c3cb1e14327453d704607a741e4b8dbd9f6e387c39282707f795f9428bef2ff814fac055d5bfc8cb4c43f15a2968c60c4153ab4dc73
SSDEEP

1536:iTNjO5pO66eLfQ/qVezMOJAiCMDfAzCVE:cjSpOko/tMH/

Score

3^/10

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Modifies registry class 10 IoCs

Processes:

rundll32.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\pbf_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\.pbf\ = "pbf_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\pbf_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\pbf_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\pbf_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\pbf_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\MuiCache	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\pbf_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\.pbf	rundll32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

AcroRd32.exe

pid process

1064 AcroRd32.exe
1064 AcroRd32.exe
1064 AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

cmd.exerundll32.exe

description	pid	process	target process
PID 1720 wrote to memory of 636	1720	cmd.exe	rundll32.exe
PID 1720 wrote to memory of 636	1720	cmd.exe	rundll32.exe
PID 1720 wrote to memory of 636	1720	cmd.exe	rundll32.exe
PID 636 wrote to memory of 1064	636	rundll32.exe	AcroRd32.exe
PID 636 wrote to memory of 1064	636	rundll32.exe	AcroRd32.exe
PID 636 wrote to memory of 1064	636	rundll32.exe	AcroRd32.exe
PID 636 wrote to memory of 1064	636	rundll32.exe	AcroRd32.exe

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\0-255.pbf
1⤵
- Suspicious use of WriteProcessMemory
PID:1720
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\0-255.pbf
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:636
- - C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe
    "C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe" "C:\Users\Admin\AppData\Local\Temp\0-255.pbf"
    3⤵
    - Suspicious use of SetWindowsHookEx
    PID:1064

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

memory/636-76-0x0000000000000000-mapping.dmp

Download
memory/1064-81-0x0000000000000000-mapping.dmp

Download
memory/1064-82-0x00000000757A1000-0x00000000757A3000-memory.dmp

Filesize
8KB

Download
memory/1720-54-0x000007FEFC011000-0x000007FEFC013000-memory.dmp

Filesize
8KB

Download