9f3afe05f4d11843a4f198acb4c18b977e3da845c263ae9534dc977075493227

Analysis

max time kernel
141s
max time network
133s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
21-05-2024 20:51

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General

Target

2024-05-21_5a19a480af7070879d3d32b4338d0b0b_cryptolocker.exe
Size

35KB
MD5

5a19a480af7070879d3d32b4338d0b0b
SHA1

5defe9381891e3c99ec108e7727d127a9ef4c492
SHA256

9f3afe05f4d11843a4f198acb4c18b977e3da845c263ae9534dc977075493227
SHA512

1bd6d12f3f672098be01c5916b40b9790ba3f647cc31f83e7fd4e38d7f0edb62cef21e218f27d4dd18ab5b335225774c6374eeded40f68832ae27cb8e3bc1382
SSDEEP

768:bxNQIE0eBhkL2Fo1CCwgfjOg9Arbkzos5Pp701:bxNrC7kYo1Fxf2rY1g

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

Processes:

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

Checks computer location settings 2 TTPs 2 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

2024-05-21_5a19a480af7070879d3d32b4338d0b0b_cryptolocker.exepissa.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\Control Panel\International\Geo\Nation	2024-05-21_5a19a480af7070879d3d32b4338d0b0b_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\Control Panel\International\Geo\Nation	pissa.exe

Executes dropped EXE 1 IoCs

Processes:

pissa.exe

pid process

4700 pissa.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
4700	pissa.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-05-21_5a19a480af7070879d3d32b4338d0b0b_cryptolocker.exe

description	pid	process	target process
PID 4004 wrote to memory of 4700	4004	2024-05-21_5a19a480af7070879d3d32b4338d0b0b_cryptolocker.exe	pissa.exe
PID 4004 wrote to memory of 4700	4004	2024-05-21_5a19a480af7070879d3d32b4338d0b0b_cryptolocker.exe	pissa.exe
PID 4004 wrote to memory of 4700	4004	2024-05-21_5a19a480af7070879d3d32b4338d0b0b_cryptolocker.exe	pissa.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-21_5a19a480af7070879d3d32b4338d0b0b_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-21_5a19a480af7070879d3d32b4338d0b0b_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4004

C:\Users\Admin\AppData\Local\Temp\pissa.exe
"C:\Users\Admin\AppData\Local\Temp\pissa.exe"
2⤵
- Checks computer location settings
- Executes dropped EXE
PID:4700

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 --field-trial-handle=4200,i,6166776566165096562,4582328833313060853,262144 --variations-seed-version --mojo-platform-channel-handle=3464 /prefetch:8
1⤵
PID:384

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\pissa.exe

Filesize
35KB

MD5
dee22a1f5df9bfbb4aef93c5de4ddb2f

SHA1
6396812ba965b2c3dbb83ad19bb19932ea73766a

SHA256
e90e6d41a8b437c74f6d4516bc4b506b6714625453f44dfb9723eaf4d191d2e7

SHA512
d4726b7953130cf19b6ca31cbe8244b7cb49ba4ba031813edd7ece9bfa4db2ff976da11d768a662d411c65bcc55112b85884dc96169163b78af5f4cd50ffa962

Download Submit
C:\Users\Admin\AppData\Local\Temp\pissec.exe

Filesize
261B

MD5
11bed1c06d8f4680de5154405be20365

SHA1
9c3095f1aa0b02924c23592d1e86673bb0081ca1

SHA256
bcc0582f122db6e61d2aa06628275f5b882c01ca037699427d0f68e48d744666

SHA512
050bb38ff33ab7e8e8aa647cffb26d2b0a54074340e79f0acf0db8f076c421505f1e4c1ce169d55aeacd4085ce258a78d24327c9393650642963beb130517da8

Download Submit
memory/4004-0-0x0000000002190000-0x0000000002196000-memory.dmp

Filesize
24KB

Download
memory/4004-1-0x0000000003010000-0x0000000003016000-memory.dmp

Filesize
24KB

Download
memory/4004-8-0x0000000002190000-0x0000000002196000-memory.dmp

Filesize
24KB

Download
memory/4700-23-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download