d0cb8f41efff3d1ff4e2d6d239ac573b1c7b75f49993d51af3318e10dd566765

Analysis

max time kernel
150s
max time network
122s
platform
windows7_x64
resource
win7-20230712-en
resource tags

arch:x64arch:x86image:win7-20230712-enlocale:en-usos:windows7-x64system
submitted
07/08/2023, 14:13

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General

Target

message.rpmsg
Size

268KB
MD5

ffb9fa9d502245b8aeff1560d2253ceb
SHA1

443e7983a9758bd15324a1c7429a3e6dda52481a
SHA256

847ce799872674b948331eb2291e667b4d55f40d33683bad0a298b0e53d2e363
SHA512

63e6854bfa39d80860d81818c4f744642c0dcb33fad4f1d1d4c29d6791dfaef244fd66feff0dd4234c81c1671e115b2544c6eef25dec4399adeac5e4466f40a8
SSDEEP

6144:ssmgBcxk/GH5CpE0fR4WdtaOw0rxF72CfC7T8FdNZUR5:s7xkuH5CpE0fO+bD2Cq7AN2j

Score

3^/10

Malware Config

Signatures

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

System Information Discovery
T1082

Modifies registry class 9 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-4159544280-4273523227-683900707-1000_CLASSES\rpmsg_auto_file\	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4159544280-4273523227-683900707-1000_CLASSES\.rpmsg\ = "rpmsg_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-4159544280-4273523227-683900707-1000_CLASSES\rpmsg_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-4159544280-4273523227-683900707-1000_CLASSES\rpmsg_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-4159544280-4273523227-683900707-1000_CLASSES\rpmsg_auto_file\shell\Read\command	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-4159544280-4273523227-683900707-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-4159544280-4273523227-683900707-1000_CLASSES\rpmsg_auto_file	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-4159544280-4273523227-683900707-1000_CLASSES\.rpmsg	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4159544280-4273523227-683900707-1000_CLASSES\rpmsg_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2908	AcroRd32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
2908	AcroRd32.exe
2908	AcroRd32.exe
2908	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2220 wrote to memory of 2876	2220	cmd.exe	29
PID 2220 wrote to memory of 2876	2220	cmd.exe	29
PID 2220 wrote to memory of 2876	2220	cmd.exe	29
PID 2876 wrote to memory of 2908	2876	rundll32.exe	30
PID 2876 wrote to memory of 2908	2876	rundll32.exe	30
PID 2876 wrote to memory of 2908	2876	rundll32.exe	30
PID 2876 wrote to memory of 2908	2876	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\message.rpmsg
1⤵
- Suspicious use of WriteProcessMemory
PID:2220
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\message.rpmsg
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2876
- - 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\message.rpmsg"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2908

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\Adobe\Acrobat\9.0\SharedDataEvents

Filesize
3KB

MD5
ce03efaf62adcb077756fdb3fb9d0ebb

SHA1
326b2c64b281c2f19e273c0bb98a7585b4f21c74

SHA256
b22801b1d58039e60efb89323b2afc002422d826c678f055cf11362a81021023

SHA512
32023fd1146ad6a660cc1f8ac4184e8a2e4ffcc67c32197fd480e8994fa00d6f9b34e2fb837069d6b5e37189c301a496cc5b6919da95982914e82b6eda91f16f

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