d06a3c727ddcb990176927874132dcdd6143cff44695f606540cc9d7c12041b0

Analysis

max time kernel
152s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20240221-en
resource tags

arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
submitted
22/02/2024, 17:34

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General

Target

2024-02-22_471d53fe701869fedf68910e1d0db319_cryptolocker.exe
Size

146KB
MD5

471d53fe701869fedf68910e1d0db319
SHA1

87c5c57ebe8a20d750aad16fda26db3fd572511c
SHA256

d06a3c727ddcb990176927874132dcdd6143cff44695f606540cc9d7c12041b0
SHA512

97a955ec6820dcf1e2d79fedafc44918dafd9d0abcf968628c906a5e3ee1002884df4782ec99c45587316572ec249d13ad596682c649d84a5eee3274ec3be8f7
SSDEEP

1536:V6QFElP6n+gMQMOtEvwDpjQGYQbxGYQbxGYQbPlooHPPFyL:V6a+pOtEvwDpjt22a

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000002320a-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000002320a-12.dat	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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3538781373-1545967067-4263767959-1000\Control Panel\International\Geo\Nation	2024-02-22_471d53fe701869fedf68910e1d0db319_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4452	asih.exe

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

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1148 wrote to memory of 4452	1148	2024-02-22_471d53fe701869fedf68910e1d0db319_cryptolocker.exe	88
PID 1148 wrote to memory of 4452	1148	2024-02-22_471d53fe701869fedf68910e1d0db319_cryptolocker.exe	88
PID 1148 wrote to memory of 4452	1148	2024-02-22_471d53fe701869fedf68910e1d0db319_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-02-22_471d53fe701869fedf68910e1d0db319_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-22_471d53fe701869fedf68910e1d0db319_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1148
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4452

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
147KB

MD5
cff46c00097feb7cf07c4da514a8efc4

SHA1
b3af3fef36d88b9476be66a45deaf874439a61ba

SHA256
08954d9d0228519bc61ea8f51cca42a7dae8c63bfd14ec4242e46d1a8f6b9c7e

SHA512
2f75c9f156e41b502b715891f5490ae0587a8f30720b2d7664eba5b61859558005b4b92e33ac6121404187b2c4e35f40eb0a828a49874903ab1f8a5e1028a696

Download Submit
memory/1148-0-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/1148-1-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/1148-2-0x0000000000600000-0x0000000000606000-memory.dmp

Filesize
24KB

Download
memory/4452-17-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/4452-21-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download