2dd9ec4710d4d4c0752abc6af17df9fd665f0c5197028cf5efdbb067dc818691

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
21-05-2024 15:41

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General

Target

2024-05-21_6c95ead0ead69831fb83485d7f294c04_cryptolocker.exe
Size

46KB
MD5

6c95ead0ead69831fb83485d7f294c04
SHA1

6831c757a058b4aa5ea10353a72c47339fa05659
SHA256

2dd9ec4710d4d4c0752abc6af17df9fd665f0c5197028cf5efdbb067dc818691
SHA512

449da51c1b23583676ea744a93938cb4186450cdfaa2c8fa16d073bca2b6ae5f3125694df4dce5344635be0c34c1ec7f56d55936b5e614abca703f6cd40da89a
SSDEEP

768:P6LsoVEeegiZPvEhHSP+gp/QtOOtEvwDpjBBMLZdzuqpXsiE8Wq/DpkF:P6Q0ElP6G+gJQMOtEvwDpjB8WMl6

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

Processes:

resource	yara_rule
behavioral2/memory/3592-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
C:\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_rule2
behavioral2/memory/3628-16-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3592-18-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3628-27-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

Processes:

resource	yara_rule
behavioral2/memory/3592-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
C:\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_set1
behavioral2/memory/3628-16-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/memory/3592-18-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/memory/3628-27-0x0000000000500000-0x000000000050B000-memory.dmp	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:

2024-05-21_6c95ead0ead69831fb83485d7f294c04_cryptolocker.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2804150937-2146708401-419095071-1000\Control Panel\International\Geo\Nation	2024-05-21_6c95ead0ead69831fb83485d7f294c04_cryptolocker.exe

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

3628 asih.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
3628	asih.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-05-21_6c95ead0ead69831fb83485d7f294c04_cryptolocker.exe

description	pid	process	target process
PID 3592 wrote to memory of 3628	3592	2024-05-21_6c95ead0ead69831fb83485d7f294c04_cryptolocker.exe	asih.exe
PID 3592 wrote to memory of 3628	3592	2024-05-21_6c95ead0ead69831fb83485d7f294c04_cryptolocker.exe	asih.exe
PID 3592 wrote to memory of 3628	3592	2024-05-21_6c95ead0ead69831fb83485d7f294c04_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-21_6c95ead0ead69831fb83485d7f294c04_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-21_6c95ead0ead69831fb83485d7f294c04_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3592

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
2⤵
- Executes dropped EXE
PID:3628

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\asih.exe
Filesize
47KB

MD5
0e885fbc6684808c35028b1206648430

SHA1
93876eb01a278e98a578e1606ca5e88f16d2e5e0

SHA256
bba253b9cd4f15590fbf8bae345063d938c87057bfb115055675271c59244971

SHA512
e02e6fe940fa582b236d9d17c6d5e625a171af7e6ff2e6e3dd24a0fa4d6d6dcaa888953e909e8cb5f8b86dc5719315c3927ac9170382f6ed8e65752974eacf20

Download Submit
memory/3592-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/3592-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/3592-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/3592-9-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/3592-18-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/3628-16-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/3628-20-0x0000000001F60000-0x0000000001F66000-memory.dmp

Filesize
24KB

Download
memory/3628-26-0x00000000020D0000-0x00000000020D6000-memory.dmp

Filesize
24KB

Download
memory/3628-27-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download