a0ffd4b7147b329eb9f1a876cd6fc043be19002503f2734faffe1dbf9c6cd034

Analysis

max time kernel
150s
max time network
33s
platform
windows7_x64
resource
win7-20221111-en
resource tags

arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
submitted
13-12-2022 00:56

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General

Target

OnlineFix.json
Size

55B
MD5

51bd3de7ee7e70c96fe914e35be2e0ed
SHA1

fc1b6359e5fa6c9b8652bb583d736d381cf6b77a
SHA256

c8b63a63cde606dbec66a7ca1d2f4b455907551bdd920f922eafed91a95a602c
SHA512

1892e6ea3ede9ec37622a17b1ce3e7945539d1f659317500e7344aac63ade2c997a50a64479818e80dd4fdab63357c460282fdd3764e4f17cc12897b50e31f4c

Score

3^/10

Malware Config

Signatures

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

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000_CLASSES\json_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\MuiCache	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000_CLASSES\json_auto_file	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000_CLASSES\.json	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000_CLASSES\json_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000_CLASSES\json_auto_file\	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000_CLASSES\.json\ = "json_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000_CLASSES\json_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000_CLASSES\json_auto_file\shell\Read\command	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1424	AcroRd32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
1424	AcroRd32.exe
1424	AcroRd32.exe
1424	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2012 wrote to memory of 524	2012	cmd.exe	29
PID 2012 wrote to memory of 524	2012	cmd.exe	29
PID 2012 wrote to memory of 524	2012	cmd.exe	29
PID 524 wrote to memory of 1424	524	rundll32.exe	30
PID 524 wrote to memory of 1424	524	rundll32.exe	30
PID 524 wrote to memory of 1424	524	rundll32.exe	30
PID 524 wrote to memory of 1424	524	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\OnlineFix.json
1⤵
- Suspicious use of WriteProcessMemory
PID:2012
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\OnlineFix.json
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:524
- - 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\OnlineFix.json"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:1424

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1424-82-0x0000000075631000-0x0000000075633000-memory.dmp

Filesize
8KB

Download
memory/2012-54-0x000007FEFC201000-0x000007FEFC203000-memory.dmp

Filesize
8KB

Download