2b86d881171d2c4605294f2482a01c12cb93555511e7762b36398e6893ef0eb9

Analysis

max time kernel
152s
max time network
133s
platform
windows7_x64
resource
win7-20230831-en
resource tags

arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system
submitted
18/09/2023, 09:53

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General

Target

RuntimeInitializeOnLoads.json
Size

1KB
MD5

dfe5007ac19c547b6a2ed601b50d0081
SHA1

a0727513903ae94a3d6b67517dc09660a6d69277
SHA256

12d74e2d1a45966b104aafe0a530edba39c6bb46bc45dfe40a7792812063f65c
SHA512

f0152c06958c88b5c72fdd736ad5c3b9d584bdcc67acb1be982d6fa86ddffb6114aad3e3c24c98b472d1945951e4df9abed94a86dcc560700cd11d0646b94780

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
Key created	\REGISTRY\USER\S-1-5-21-2180306848-1874213455-4093218721-1000_CLASSES\.json	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2180306848-1874213455-4093218721-1000_CLASSES\.json\ = "json_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2180306848-1874213455-4093218721-1000_CLASSES\json_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2180306848-1874213455-4093218721-1000_Classes\Local Settings	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2180306848-1874213455-4093218721-1000_CLASSES\json_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2180306848-1874213455-4093218721-1000_CLASSES\json_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2180306848-1874213455-4093218721-1000_CLASSES\json_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2180306848-1874213455-4093218721-1000_CLASSES\json_auto_file	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2180306848-1874213455-4093218721-1000_CLASSES\json_auto_file\shell\Read	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2792	AcroRd32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
2792	AcroRd32.exe
2792	AcroRd32.exe
2792	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2380 wrote to memory of 1556	2380	cmd.exe	29
PID 2380 wrote to memory of 1556	2380	cmd.exe	29
PID 2380 wrote to memory of 1556	2380	cmd.exe	29
PID 1556 wrote to memory of 2792	1556	rundll32.exe	30
PID 1556 wrote to memory of 2792	1556	rundll32.exe	30
PID 1556 wrote to memory of 2792	1556	rundll32.exe	30
PID 1556 wrote to memory of 2792	1556	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\RuntimeInitializeOnLoads.json
1⤵
- Suspicious use of WriteProcessMemory
PID:2380
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\RuntimeInitializeOnLoads.json
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:1556
- - 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\RuntimeInitializeOnLoads.json"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2792

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

Replay Monitor

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Downloads

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

Filesize
3KB

MD5
1ecd2023a5ba93265b3148378c98fe20

SHA1
043419bb03913a39793443546af0bcfa8d7dfcc9

SHA256
2f1fa495dd9b53b1850b128fc9f2e3c3f42ca9ed8c1d7486de85fedd66d95e54

SHA512
d17effa00a3e32303a33794509448e3232f8d67dbccb51ac6247af3d6b6bbcd9609ee287b99b9838c29808cc8987a24014123044d0eba2a812fe4a4ffdd06898

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