891d5d73fa7652cb96bf902c0c4517065c437f830001b5c839342738e2211a41

Analysis

max time kernel
148s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
24/01/2024, 01:32

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General

Target

2024-01-24_d99545cde9cd93c9840e3a5998b766f7_cryptolocker.exe
Size

46KB
MD5

d99545cde9cd93c9840e3a5998b766f7
SHA1

a57062c4a85073c445e8cf30a4e9fd775a73e542
SHA256

891d5d73fa7652cb96bf902c0c4517065c437f830001b5c839342738e2211a41
SHA512

072057427f052a72458dfa6961fc9a9f0d64f6d9d264c137cdf6529287ea75dd37c2584aac5eabecd6515768fe24e616f4d86d015774bb7f9cc24bea725ebb3a
SSDEEP

768:V6LsoEEeegiZPvEhHSG+gDYQtOOtEvwDpj/MLaHaMMm2X30E3aq:V6QFElP6n+gMQMOtEvwDpjyaHaXmq

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023212-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023212-12.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-1-5-21-1497073144-2389943819-3385106915-1000\Control Panel\International\Geo\Nation	2024-01-24_d99545cde9cd93c9840e3a5998b766f7_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2168	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 4960 wrote to memory of 2168	4960	2024-01-24_d99545cde9cd93c9840e3a5998b766f7_cryptolocker.exe	88
PID 4960 wrote to memory of 2168	4960	2024-01-24_d99545cde9cd93c9840e3a5998b766f7_cryptolocker.exe	88
PID 4960 wrote to memory of 2168	4960	2024-01-24_d99545cde9cd93c9840e3a5998b766f7_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-01-24_d99545cde9cd93c9840e3a5998b766f7_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-24_d99545cde9cd93c9840e3a5998b766f7_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4960
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2168

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
46KB

MD5
77c5ef8916d34223949fb810edbbca87

SHA1
a51c5035ddfd362f2cc0da127e77d9dd9dfeebcd

SHA256
56bace7e9b020efd7ae40bc123674559e0ffb895fe7d86a9660c2ff51a41643e

SHA512
1d7c7cb4f4d9d37ed95b31712c9d661c02c1113f35314a2ee567939b1bd4887a61453290528fb34571e21e43b84d1ff1023fb06e3d839e4dd6579635aa9146aa

Download Submit
memory/2168-17-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/2168-19-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4960-0-0x00000000006F0000-0x00000000006F6000-memory.dmp

Filesize
24KB

Download
memory/4960-1-0x00000000006F0000-0x00000000006F6000-memory.dmp

Filesize
24KB

Download
memory/4960-2-0x00000000021B0000-0x00000000021B6000-memory.dmp

Filesize
24KB

Download