0625daa264e5248023dcb1650620c492bc6a64fa3a4722c3be361eca774aa16c

Analysis

max time kernel
148s
max time network
160s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
06/03/2024, 09:38

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General

Target

2024-03-06_e551b36c9e613e67f2927a52a05daca1_cryptolocker.exe
Size

69KB
MD5

e551b36c9e613e67f2927a52a05daca1
SHA1

a246889746e714323033b4e8d505ffb04e250388
SHA256

0625daa264e5248023dcb1650620c492bc6a64fa3a4722c3be361eca774aa16c
SHA512

8ee0c8ae507c949f9a9b3e089834ea0dba1dd62b81c98632a72eab2b088ac6a378a022a4dc22bfbe23df0fef35fae7c63f71007aa11744ed24ecfe32f6fba7c5
SSDEEP

1536:Dk/xY0sllyGQMOtEvwDpjwycDtKkQZQRKb61vSbgZ3QzNKUHLS:DW60sllyWOtEvwDpjwF85k

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 3 IoCs

resource	yara_rule
behavioral2/memory/3260-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0007000000023255-13.dat	CryptoLocker_rule2
behavioral2/memory/3260-18-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral2/memory/3260-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0007000000023255-13.dat	CryptoLocker_set1
behavioral2/memory/3260-18-0x0000000000500000-0x000000000050B000-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-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	2024-03-06_e551b36c9e613e67f2927a52a05daca1_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1564	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 3260 wrote to memory of 1564	3260	2024-03-06_e551b36c9e613e67f2927a52a05daca1_cryptolocker.exe	98
PID 3260 wrote to memory of 1564	3260	2024-03-06_e551b36c9e613e67f2927a52a05daca1_cryptolocker.exe	98
PID 3260 wrote to memory of 1564	3260	2024-03-06_e551b36c9e613e67f2927a52a05daca1_cryptolocker.exe	98

C:\Users\Admin\AppData\Local\Temp\2024-03-06_e551b36c9e613e67f2927a52a05daca1_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-06_e551b36c9e613e67f2927a52a05daca1_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3260
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1564

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=2660 --field-trial-handle=2244,i,11878111470816612087,2265290141962607370,262144 --variations-seed-version /prefetch:8
1⤵
PID:1324

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
ed54c82250df81480c74d471a5ad2be2

SHA1
443bb62579a66242e9c4c0001a527e0d29ec8f28

SHA256
253113642e91d2fed1876a5c73c61a0fb82b8aab3f0bd25d8c95e83ca229bcba

SHA512
5ccddab6561ab9ea4614ef18908c0f550d97524f87ccd57e34adba4574add95b60724b52410849e0aa433e9d279e2179fb885b5f7889820f6f075bb0f11e5248

Download Submit
memory/1564-19-0x0000000000750000-0x0000000000756000-memory.dmp

Filesize
24KB

Download
memory/1564-20-0x0000000000730000-0x0000000000736000-memory.dmp

Filesize
24KB

Download
memory/3260-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/3260-1-0x00000000006F0000-0x00000000006F6000-memory.dmp

Filesize
24KB

Download
memory/3260-2-0x00000000006F0000-0x00000000006F6000-memory.dmp

Filesize
24KB

Download
memory/3260-3-0x0000000002240000-0x0000000002246000-memory.dmp

Filesize
24KB

Download
memory/3260-18-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download