0ecfa9e9370f383a669aad9db9a28109c24226496b519e7383713c7c1deaf861

Analysis

max time kernel
119s
max time network
121s
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/pre-merge-commit.sample
Size

416B
MD5

39cb268e2a85d436b9eb6f47614c3cbc
SHA1

04c64e58bc25c149482ed45dbd79e40effb89eb7
SHA256

d3825a70337940ebbd0a5c072984e13245920cdf8898bd225c8d27a6dfc9cb53
SHA512

e4dc204494f5062efa3032b00c64707a4f38978040482501b3e085f071e3ee5a9737d537e6a52002ceb4ebe2bfe09e555c5d969581e80b3eba2a922015c67960

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

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

AcroRd32.exe

pid process

2480 AcroRd32.exe
Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

AcroRd32.exe

pid process

2480 AcroRd32.exe
2480 AcroRd32.exe

pid	process
2480	AcroRd32.exe

pid	process
2480	AcroRd32.exe
2480	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

cmd.exerundll32.exe

description	pid	process	target process
PID 2340 wrote to memory of 2524	2340	cmd.exe	rundll32.exe
PID 2340 wrote to memory of 2524	2340	cmd.exe	rundll32.exe
PID 2340 wrote to memory of 2524	2340	cmd.exe	rundll32.exe
PID 2524 wrote to memory of 2480	2524	rundll32.exe	AcroRd32.exe
PID 2524 wrote to memory of 2480	2524	rundll32.exe	AcroRd32.exe
PID 2524 wrote to memory of 2480	2524	rundll32.exe	AcroRd32.exe
PID 2524 wrote to memory of 2480	2524	rundll32.exe	AcroRd32.exe

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\Chronos\.git\hooks\pre-merge-commit.sample
1⤵
- Suspicious use of WriteProcessMemory
PID:2340

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\pre-merge-commit.sample
2⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:2524

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\pre-merge-commit.sample"
3⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
PID:2480

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
6e8dd80b0737bb2b66ae0dc7ad2644e3

SHA1
78e53951d4d81f80463dda1635676bf349ac65c9

SHA256
7fcc9a8a66de31a96aecb7a522f95fba38aef7b507dadec6b94a21a340878333

SHA512
d28de1c78c458392da9771f55c1fdfa7859266d04f7b07569e9039010df3e6dfd57efffe8827c919ce42c70fb561d47dc39b2225593918f64ee89895c9f445ed

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