e5c4711035eddb9b45b5807c77039f1a46a4104149a60d56f87a025dbbb3e314

Analysis

max time kernel
155s
max time network
166s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
23-05-2024 00:54

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General

Target

2024-05-23_d2929fd5ec045719da25e3b7c9acc67a_cryptolocker.exe
Size

41KB
MD5

d2929fd5ec045719da25e3b7c9acc67a
SHA1

4a22c4e81c3550b608653444eae3e82a170fb426
SHA256

e5c4711035eddb9b45b5807c77039f1a46a4104149a60d56f87a025dbbb3e314
SHA512

24ea2f500683c58be5753469aaf4e0d109812a0fb04e409dbabd440ed7e97a4d47078de6dd21ed70434994dc065b265b287923f04129eeda10bbe65030427fa0
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBaac4HKcfr9OrR:X6QFElP6n+gJQMOtEvwDpjBsYK6r0rR

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\asih.exe	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

Processes:

2024-05-23_d2929fd5ec045719da25e3b7c9acc67a_cryptolocker.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	2024-05-23_d2929fd5ec045719da25e3b7c9acc67a_cryptolocker.exe

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

5408 asih.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
5408	asih.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-05-23_d2929fd5ec045719da25e3b7c9acc67a_cryptolocker.exe

description	pid	process	target process
PID 3296 wrote to memory of 5408	3296	2024-05-23_d2929fd5ec045719da25e3b7c9acc67a_cryptolocker.exe	asih.exe
PID 3296 wrote to memory of 5408	3296	2024-05-23_d2929fd5ec045719da25e3b7c9acc67a_cryptolocker.exe	asih.exe
PID 3296 wrote to memory of 5408	3296	2024-05-23_d2929fd5ec045719da25e3b7c9acc67a_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-23_d2929fd5ec045719da25e3b7c9acc67a_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-23_d2929fd5ec045719da25e3b7c9acc67a_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3296

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
2⤵
- Executes dropped EXE
PID:5408

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4472 --field-trial-handle=2280,i,1836084024518340990,18250262151825427757,262144 --variations-seed-version /prefetch:8
1⤵
PID:5328

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\asih.exe
Filesize
41KB

MD5
8f13fd7391eef92840f54e9062c69e87

SHA1
2c0b200e76ab2bf00669d26609d90281fe430937

SHA256
778670654afcc51581d98da0838d5048b625dc7cd299e0d6963d640f6b26fc80

SHA512
e44d8c2729d4e76ef5fdcb19e1200c1f3439dcf04f1b81642472e6e3b4042c16920d0a8c8620406d9c076774b9fd73e6011704e522c77f6ada9a19de097ac399

Download Submit
memory/3296-0-0x0000000000680000-0x0000000000686000-memory.dmp

Filesize
24KB

Download
memory/3296-1-0x0000000000680000-0x0000000000686000-memory.dmp

Filesize
24KB

Download
memory/3296-2-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/5408-18-0x0000000002080000-0x0000000002086000-memory.dmp

Filesize
24KB

Download
memory/5408-17-0x00000000005B0000-0x00000000005B6000-memory.dmp

Filesize
24KB

Download