e3903e8459973abdf936ba987a46b47d50776d06f2074b62618af4d201aee059

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
20/03/2024, 02:58

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General

Target

2024-03-20_c453f1e9c7cfb024a4c56dde3621b7ac_cryptolocker.exe
Size

48KB
MD5

c453f1e9c7cfb024a4c56dde3621b7ac
SHA1

4003adaacc98dadd4bcc1e498e6966917e72847e
SHA256

e3903e8459973abdf936ba987a46b47d50776d06f2074b62618af4d201aee059
SHA512

ac1ad0a1338b75ea2ffc1ef7bfbb0f448e58ef0a2f7b4b95efbbc22e431dd7f9d7bf50d73e4802410a9ff87f0d2340f3172f80e7718cef90c2c0ffa990de6a49
SSDEEP

768:B9inqyNR/QtOOtEvwDpjBK/rJ+Nw8qnTb1AP+:B9mqyNhQMOtEvwDpjBxe8S1A2

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/3564-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000400000001e980-13.dat	CryptoLocker_rule2
behavioral2/memory/3564-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2284-18-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/3564-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000400000001e980-13.dat	CryptoLocker_set1
behavioral2/memory/3564-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/2284-18-0x0000000000500000-0x000000000050F000-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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3270530367-132075249-2153716227-1000\Control Panel\International\Geo\Nation	2024-03-20_c453f1e9c7cfb024a4c56dde3621b7ac_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2284	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 3564 wrote to memory of 2284	3564	2024-03-20_c453f1e9c7cfb024a4c56dde3621b7ac_cryptolocker.exe	87
PID 3564 wrote to memory of 2284	3564	2024-03-20_c453f1e9c7cfb024a4c56dde3621b7ac_cryptolocker.exe	87
PID 3564 wrote to memory of 2284	3564	2024-03-20_c453f1e9c7cfb024a4c56dde3621b7ac_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-03-20_c453f1e9c7cfb024a4c56dde3621b7ac_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-20_c453f1e9c7cfb024a4c56dde3621b7ac_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3564
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2284

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
48KB

MD5
f375852ef6b546938ff736795e851c63

SHA1
a719843a0056a687d2897845d7e3b85a3059a36c

SHA256
4aa1bb311587f9418308f5a949650c2f8b31d3539056077b98d9aefa9f074af7

SHA512
2de182f1c2582834fef6d77ba54b962c134080def9b58c93581873a09d8a1226309041428764bd67b88d0026d398647ad915cad4c643f6c0ff21a7aab63f360a

Download Submit
memory/2284-18-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2284-20-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/2284-25-0x0000000000640000-0x0000000000646000-memory.dmp

Filesize
24KB

Download
memory/3564-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3564-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/3564-2-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/3564-3-0x00000000007D0000-0x00000000007D6000-memory.dmp

Filesize
24KB

Download
memory/3564-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download