7de1910a924e1ad4bac24e566f09b9a5f57edba43f1f5458cfdf2d2f42196f25

Analysis

max time kernel
150s
max time network
147s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
23-05-2024 01:25

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General

Target

2024-05-23_487e15ea88ce8f82759ee4c9e9f810a7_cryptolocker.exe
Size

44KB
MD5

487e15ea88ce8f82759ee4c9e9f810a7
SHA1

2403aa395f1f99f1802a4050d7e157a75929502b
SHA256

7de1910a924e1ad4bac24e566f09b9a5f57edba43f1f5458cfdf2d2f42196f25
SHA512

20197e2c27c61438722c4e6e08a75083207d838dfebbcd176bfa70abc2b07031a395f655d9cc17f9fe4eb1fac39c0541dfd3d2427711370fde4d2e4530df58a3
SSDEEP

384:bm74uGLLQRcsdeQ72ngEr4K7YmE8jo0nrlwfjDUpEui0U3Tw:bm74zYcgT/Ekn0ryfjLuuw

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4908-0-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
C:\Users\Admin\AppData\Local\Temp\hasfj.exe	CryptoLocker_rule2
behavioral2/memory/4908-17-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2452-25-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2

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_487e15ea88ce8f82759ee4c9e9f810a7_cryptolocker.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\Control Panel\International\Geo\Nation	2024-05-23_487e15ea88ce8f82759ee4c9e9f810a7_cryptolocker.exe

Executes dropped EXE 1 IoCs

Processes:

hasfj.exe

pid process

2452 hasfj.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2452	hasfj.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-05-23_487e15ea88ce8f82759ee4c9e9f810a7_cryptolocker.exe

description	pid	process	target process
PID 4908 wrote to memory of 2452	4908	2024-05-23_487e15ea88ce8f82759ee4c9e9f810a7_cryptolocker.exe	hasfj.exe
PID 4908 wrote to memory of 2452	4908	2024-05-23_487e15ea88ce8f82759ee4c9e9f810a7_cryptolocker.exe	hasfj.exe
PID 4908 wrote to memory of 2452	4908	2024-05-23_487e15ea88ce8f82759ee4c9e9f810a7_cryptolocker.exe	hasfj.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-23_487e15ea88ce8f82759ee4c9e9f810a7_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-23_487e15ea88ce8f82759ee4c9e9f810a7_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4908

C:\Users\Admin\AppData\Local\Temp\hasfj.exe
"C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
2⤵
- Executes dropped EXE
PID:2452

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=3980,i,13281073920029625837,8253721632651544158,262144 --variations-seed-version --mojo-platform-channel-handle=4172 /prefetch:8
1⤵
PID:4464

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\hasfj.exe

Filesize
44KB

MD5
212d275b769f65221c61a89df3809817

SHA1
96f8a3c14539d0bd24c2f970417f820f0b12010e

SHA256
4606d5d0fcee414fe76ee52692cef66f31986f7267bc5c6db48edf1ed7cff1db

SHA512
5ee66f0f50932abfa6a8b28b6549b683ea6cc85deb3b292e36aa42fe1d02868735f7bac4b534f79bbfa2fc7445b225cbf241a34b193ddcd54c92d706890f2ea4

Download Submit
memory/2452-25-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/4908-0-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/4908-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/4908-2-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download
memory/4908-9-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/4908-17-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download