0ecfa9e9370f383a669aad9db9a28109c24226496b519e7383713c7c1deaf861

Analysis

max time kernel
119s
max time network
120s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
22-03-2024 17:01

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General

Target

Chronos/src/utils/__pycache__/closeDMs.cpython-310.pyc
Size

776B
MD5

421533b39871c8251104f76e3549cb04
SHA1

d250322a7c7ab45cf3f187427246f542d28d596f
SHA256

30fdd4a528812880a908ac5f14f206a7c85e53b5007bb4d7eff8f9aeecbbc464
SHA512

db6ac395f836f0843a801136ee60426ffad0593ce2edf13c1c3985ae68f738060e920516f940b258c40f7307793439e6ec0ca9a4611524367a6597e137c27ca4

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

Processes:

rundll32.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000_CLASSES\pyc_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000_CLASSES\pyc_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000_CLASSES\pyc_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000_CLASSES\.pyc	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000_CLASSES\pyc_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000_CLASSES\pyc_auto_file\shell\Read\command	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000_Classes\Local Settings	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000_CLASSES\.pyc\ = "pyc_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000_CLASSES\pyc_auto_file\shell	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

AcroRd32.exe

pid process

2156 AcroRd32.exe
Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

AcroRd32.exe

pid process

2156 AcroRd32.exe
2156 AcroRd32.exe

pid	process
2156	AcroRd32.exe

pid	process
2156	AcroRd32.exe
2156	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

cmd.exerundll32.exe

description	pid	process	target process
PID 1808 wrote to memory of 2636	1808	cmd.exe	rundll32.exe
PID 1808 wrote to memory of 2636	1808	cmd.exe	rundll32.exe
PID 1808 wrote to memory of 2636	1808	cmd.exe	rundll32.exe
PID 2636 wrote to memory of 2156	2636	rundll32.exe	AcroRd32.exe
PID 2636 wrote to memory of 2156	2636	rundll32.exe	AcroRd32.exe
PID 2636 wrote to memory of 2156	2636	rundll32.exe	AcroRd32.exe
PID 2636 wrote to memory of 2156	2636	rundll32.exe	AcroRd32.exe

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\Chronos\src\utils\__pycache__\closeDMs.cpython-310.pyc
1⤵
- Suspicious use of WriteProcessMemory
PID:1808

C:\Windows\system32\rundll32.exe
"C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\Chronos\src\utils\__pycache__\closeDMs.cpython-310.pyc
2⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:2636

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\Chronos\src\utils\__pycache__\closeDMs.cpython-310.pyc"
3⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
PID:2156

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
3c17a460630e9201fd3b451d8e605464

SHA1
a5454b5d6642f396fa62de4161a9b2ac48cd3877

SHA256
2ffcd25d44d05a2e5e7713c790b0262f88edd98114cfba8e54439b75f15d1345

SHA512
d198a08264adb9b515739db98866f87d10b4be5e534614b0d3e49718be4851165d8ea8da75db982dbf0a393d6785608f3f6c34cb507eee60db92a8e669598d18

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