9a361eab8dfdf612f22a20bc2b51bff4cf3e5644ca4480ed7542810d1e89fd50

Analysis

max time kernel
152s
max time network
166s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
14/02/2024, 07:34

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General

Target

2024-02-14_4719986590c98ad7be4e61022cc6a549_cryptolocker.exe
Size

69KB
MD5

4719986590c98ad7be4e61022cc6a549
SHA1

7ea69783aa4cd54e6642c071d414c5bfc7ef0174
SHA256

9a361eab8dfdf612f22a20bc2b51bff4cf3e5644ca4480ed7542810d1e89fd50
SHA512

47fbef659525aa744518ec6ee9d30c6a968ef9ed78194b2a056253206645aecc7ac71ef6b86049f9d3b53a09773ce19f4b1e3a4a7d713b4ada3d4ea19801bb0b
SSDEEP

1536:Dk/xY0sllyGQMOtEvwDpjwycDtKkQZQRKb61vSbgZ3QzNKUNM:DW60sllyWOtEvwDpjwF85I

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/4932-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0007000000023212-13.dat	CryptoLocker_rule2
behavioral2/memory/4932-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3032-18-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/4932-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0007000000023212-13.dat	CryptoLocker_set1
behavioral2/memory/4932-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/memory/3032-18-0x0000000000500000-0x000000000050B000-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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2398549320-3657759451-817663969-1000\Control Panel\International\Geo\Nation	2024-02-14_4719986590c98ad7be4e61022cc6a549_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3032	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 4932 wrote to memory of 3032	4932	2024-02-14_4719986590c98ad7be4e61022cc6a549_cryptolocker.exe	83
PID 4932 wrote to memory of 3032	4932	2024-02-14_4719986590c98ad7be4e61022cc6a549_cryptolocker.exe	83
PID 4932 wrote to memory of 3032	4932	2024-02-14_4719986590c98ad7be4e61022cc6a549_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-02-14_4719986590c98ad7be4e61022cc6a549_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-14_4719986590c98ad7be4e61022cc6a549_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4932
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3032

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
69KB

MD5
8b11b65f57084bae3f41f4cdd80e390c

SHA1
be9d257a3b0a9cc3df50638187fcafe71199b69b

SHA256
75eef8576d26b70277f939627dbd6724ada810f89962ed177e26b048cea499fd

SHA512
e501f600e6d8d69c10d391bf0b043e242c2c1171f8575dfdf95090782bbf62e280ea6c05459d28ff6813c3605b8864c6c3f1123231bf347995653c0f7ea785ae

Download Submit
memory/3032-18-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/3032-20-0x0000000000590000-0x0000000000596000-memory.dmp

Filesize
24KB

Download
memory/3032-26-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/4932-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/4932-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/4932-2-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/4932-3-0x0000000000860000-0x0000000000866000-memory.dmp

Filesize
24KB

Download
memory/4932-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download