e949023c6529249970030134a0ba147e403c57246bedff048bfb532dc72559c3

Analysis

max time kernel
141s
max time network
157s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
01/02/2024, 20:38

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General

Target

2024-02-01_66b9e574fec7cd90d79b86c67417574e_cryptolocker.exe
Size

38KB
MD5

66b9e574fec7cd90d79b86c67417574e
SHA1

2019ba1ecf9482650469cced00571286e67fbf61
SHA256

e949023c6529249970030134a0ba147e403c57246bedff048bfb532dc72559c3
SHA512

437e0f81172af88e0e36b02eb7b1dc3d12d66437d27609372099e3ee1faed78e751701fcc98d38a02efe741aa30eb220b01b8b77a957d5c008ab854245cd9086
SSDEEP

768:V6LsoEEeegiZPvEhHSG+gDYQtOOtEvwDpjeJQLI3JnoehFOz:V6QFElP6n+gMQMOtEvwDpjeJQy1hoz

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000600000002323f-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000600000002323f-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-1-5-21-2398549320-3657759451-817663969-1000\Control Panel\International\Geo\Nation	2024-02-01_66b9e574fec7cd90d79b86c67417574e_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4384	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 3056 wrote to memory of 4384	3056	2024-02-01_66b9e574fec7cd90d79b86c67417574e_cryptolocker.exe	84
PID 3056 wrote to memory of 4384	3056	2024-02-01_66b9e574fec7cd90d79b86c67417574e_cryptolocker.exe	84
PID 3056 wrote to memory of 4384	3056	2024-02-01_66b9e574fec7cd90d79b86c67417574e_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-02-01_66b9e574fec7cd90d79b86c67417574e_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-01_66b9e574fec7cd90d79b86c67417574e_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3056
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4384

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
38KB

MD5
0e5e1201e5c0ad69e04b3b9c0c1e2210

SHA1
379a7f8490dc3a4cf6329fe47e57acbfaac7b875

SHA256
3094cf097f33999c8dc44c5e7c92ff4082ad7129a02a671d38a5135487ff5743

SHA512
4124bde8ef40210846f7cef472035ecc459d85c1baad32cf155f6136d5b176623e4bd310393982cd65a84f7d90fa64f88d68b942803553560ac9148d16b39d60

Download Submit
memory/3056-0-0x00000000005B0000-0x00000000005B6000-memory.dmp

Filesize
24KB

Download
memory/3056-1-0x00000000005B0000-0x00000000005B6000-memory.dmp

Filesize
24KB

Download
memory/3056-2-0x00000000006D0000-0x00000000006D6000-memory.dmp

Filesize
24KB

Download
memory/4384-17-0x0000000002070000-0x0000000002076000-memory.dmp

Filesize
24KB

Download
memory/4384-19-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download