0ecfa9e9370f383a669aad9db9a28109c24226496b519e7383713c7c1deaf861

Analysis

max time kernel
122s
max time network
126s
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/.git/hooks/push-to-checkout.sample
Size

2KB
MD5

c7ab00c7784efeadad3ae9b228d4b4db
SHA1

508240328c8b55f8157c93c43bf5e291e5d2fbcb
SHA256

a53d0741798b287c6dd7afa64aee473f305e65d3f49463bb9d7408ec3b12bf5f
SHA512

586efb6a206f73d8a94561266153a624e2753830bc431a283bed998c46ac00a9df4995ddfd0aa852b1a22b4672c80f2c33cee3fe2e3321e392ff4cef26dbf75e

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
Key created	\REGISTRY\USER\S-1-5-21-3787592910-3720486031-2929222812-1000_CLASSES\sample_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3787592910-3720486031-2929222812-1000_CLASSES\sample_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3787592910-3720486031-2929222812-1000_CLASSES\sample_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3787592910-3720486031-2929222812-1000_CLASSES\sample_auto_file\shell	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3787592910-3720486031-2929222812-1000_CLASSES\sample_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3787592910-3720486031-2929222812-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3787592910-3720486031-2929222812-1000_CLASSES\.sample	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3787592910-3720486031-2929222812-1000_CLASSES\.sample\ = "sample_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3787592910-3720486031-2929222812-1000_CLASSES\sample_auto_file\shell\Read\command	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

AcroRd32.exe

pid process

3016 AcroRd32.exe
Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

AcroRd32.exe

pid process

3016 AcroRd32.exe
3016 AcroRd32.exe

pid	process
3016	AcroRd32.exe

pid	process
3016	AcroRd32.exe
3016	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

cmd.exerundll32.exe

description	pid	process	target process
PID 2240 wrote to memory of 2688	2240	cmd.exe	rundll32.exe
PID 2240 wrote to memory of 2688	2240	cmd.exe	rundll32.exe
PID 2240 wrote to memory of 2688	2240	cmd.exe	rundll32.exe
PID 2688 wrote to memory of 3016	2688	rundll32.exe	AcroRd32.exe
PID 2688 wrote to memory of 3016	2688	rundll32.exe	AcroRd32.exe
PID 2688 wrote to memory of 3016	2688	rundll32.exe	AcroRd32.exe
PID 2688 wrote to memory of 3016	2688	rundll32.exe	AcroRd32.exe

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\Chronos\.git\hooks\push-to-checkout.sample
1⤵
- Suspicious use of WriteProcessMemory
PID:2240

C:\Windows\system32\rundll32.exe
"C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\Chronos\.git\hooks\push-to-checkout.sample
2⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:2688

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\.git\hooks\push-to-checkout.sample"
3⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
PID:3016

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
eaab3b1e5648ced46100448e097a482f

SHA1
70109172e6d8ceb879eb54db3e8ea13fa81b3221

SHA256
57dd4961afc44e07e19f797057f26b7f7f5ae87d732f84a12c058331e7e5a883

SHA512
d8fd22d89b40d4593500b822deec40d0b3ea9832c9f2f36c69f25b082f78e939d021ce0d4adbd68e9e2a39c1bcb7bb9a4d95636cac52bf927bd5783936c5b4db

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