516d58a8d1145586eb6773da064bfe9593483d1cf4ccd36951864175de92e87d

Analysis

max time kernel
148s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
12-02-2024 19:25

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General

Target

2024-02-12_9dc8ef6d379870f63ad0f85f15959934_cryptolocker.exe
Size

45KB
MD5

9dc8ef6d379870f63ad0f85f15959934
SHA1

71b15b500aa5f8c33ad07ed03ef3c619454f0054
SHA256

516d58a8d1145586eb6773da064bfe9593483d1cf4ccd36951864175de92e87d
SHA512

1589cb3c2bebf003aa43484961f4b4b73c3a54b7ba54ceff281824ce672ac27aefdfe5c772222e1360dc822b12bcbae7375223843abbe534bf5caf83dc8fa744
SSDEEP

768:V6LsoEEeegiZPvEhHSG+gDYQtOOtEvwDpj/MLaHaMMm2X3rtLSvd8:V6QFElP6n+gMQMOtEvwDpjyaHaXvOvC

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_set1

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

2024-02-12_9dc8ef6d379870f63ad0f85f15959934_cryptolocker.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3803511929-1339359695-2191195476-1000\Control Panel\International\Geo\Nation	2024-02-12_9dc8ef6d379870f63ad0f85f15959934_cryptolocker.exe

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

2836 asih.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2836	asih.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-02-12_9dc8ef6d379870f63ad0f85f15959934_cryptolocker.exe

description	pid	process	target process
PID 836 wrote to memory of 2836	836	2024-02-12_9dc8ef6d379870f63ad0f85f15959934_cryptolocker.exe	asih.exe
PID 836 wrote to memory of 2836	836	2024-02-12_9dc8ef6d379870f63ad0f85f15959934_cryptolocker.exe	asih.exe
PID 836 wrote to memory of 2836	836	2024-02-12_9dc8ef6d379870f63ad0f85f15959934_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-02-12_9dc8ef6d379870f63ad0f85f15959934_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-12_9dc8ef6d379870f63ad0f85f15959934_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:836

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
2⤵
- Executes dropped EXE
PID:2836

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
45KB

MD5
c90c89ae22eec034bb84b8d185d9eb11

SHA1
53d43482da0afc2581a5a46808c406d02471acc1

SHA256
912119023fc98f9f703a482508c9c9a36bf237130e95b01a56f02ae513abfcd0

SHA512
ae34768698dca2ebaf47df8de8d70112cc7702b638870cdeb21946ae6bd65d0fcfd5c0f05dc21ffeb9ebde02aee8c41ef1a56daec561adba45ea1b0ee913e96a

Download Submit
memory/836-0-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/836-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/836-2-0x00000000006D0000-0x00000000006D6000-memory.dmp

Filesize
24KB

Download
memory/2836-17-0x00000000020F0000-0x00000000020F6000-memory.dmp

Filesize
24KB

Download
memory/2836-18-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download