4a15ccbc084a594e940e863a362017f86226f517f21d449e8ec5addae06bf63e

Analysis

max time kernel
140s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
12-02-2024 20:22

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General

Target

2024-02-12_1070753561a271bc37b133c4eabf5ea9_cryptolocker.exe
Size

54KB
MD5

1070753561a271bc37b133c4eabf5ea9
SHA1

2af66cce76bba205029126e7c9a4c0f1a5e208ed
SHA256

4a15ccbc084a594e940e863a362017f86226f517f21d449e8ec5addae06bf63e
SHA512

618be14a769cd76b179ca53eed2029814ac5436ce63af16627518c34102566a17f7dcda172a603fbcaa4bc6800e7eff52ccbe27de66ee0ca239c1b359953d172
SSDEEP

768:79inqyNR/QtOOtEvwDpjBK/iVTab3GRuv3VylSV/CdMFbp:79mqyNhQMOtEvwDpjBPY7xv3g8ZFbp

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 3 IoCs

Processes:

resource	yara_rule
behavioral2/memory/5108-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
C:\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_rule2
behavioral2/memory/5108-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

Processes:

resource	yara_rule
behavioral2/memory/5108-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
C:\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_set1
behavioral2/memory/5108-17-0x0000000000500000-0x000000000050F000-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:

2024-02-12_1070753561a271bc37b133c4eabf5ea9_cryptolocker.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation	2024-02-12_1070753561a271bc37b133c4eabf5ea9_cryptolocker.exe

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

3140 asih.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
3140	asih.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-02-12_1070753561a271bc37b133c4eabf5ea9_cryptolocker.exe

description	pid	process	target process
PID 5108 wrote to memory of 3140	5108	2024-02-12_1070753561a271bc37b133c4eabf5ea9_cryptolocker.exe	asih.exe
PID 5108 wrote to memory of 3140	5108	2024-02-12_1070753561a271bc37b133c4eabf5ea9_cryptolocker.exe	asih.exe
PID 5108 wrote to memory of 3140	5108	2024-02-12_1070753561a271bc37b133c4eabf5ea9_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-02-12_1070753561a271bc37b133c4eabf5ea9_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-12_1070753561a271bc37b133c4eabf5ea9_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:5108

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
2⤵
- Executes dropped EXE
PID:3140

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
54KB

MD5
128da5bad7184572050df0df273ec866

SHA1
35edefea74d6dd0ac3ea61038066297996977402

SHA256
62f2ced8fec5cbb5a0cff7f4f13859c331d25d19ff3703d7b112804226dc2be1

SHA512
a02cd70c56e1dc17601546cb233a98e790ca1ffabaaf60a79d5a6182dd0294e366b6e715006dad2aeba313b647f64b98bce7fdd6361ceec24c9061578d279e80

Download Submit
memory/3140-19-0x0000000000570000-0x0000000000576000-memory.dmp

Filesize
24KB

Download
memory/3140-20-0x0000000002070000-0x0000000002076000-memory.dmp

Filesize
24KB

Download
memory/5108-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/5108-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/5108-2-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/5108-3-0x0000000000810000-0x0000000000816000-memory.dmp

Filesize
24KB

Download
memory/5108-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download