e1900ae90b599303b2f75c7451c5dff971e784a8e6860f3bf4b7582a2980aa8f

Analysis

max time kernel
151s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
05/05/2024, 04:38

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General

Target

2024-05-05_a1c5414913a380796e287bb69a40553d_cryptolocker.exe
Size

32KB
MD5

a1c5414913a380796e287bb69a40553d
SHA1

f4d645ff8215b056a39fc0cb4b8e67914705bce2
SHA256

e1900ae90b599303b2f75c7451c5dff971e784a8e6860f3bf4b7582a2980aa8f
SHA512

497bd7bce347451bb738c8e326c6bd38de5bc8a099f472aa387cdc1c676406e4d5b05d7052410a14b31b80df647bfd02340091bc5833aa3dc44436ed47dea834
SSDEEP

384:bG74uGLLQRcsdeQ72ngEr4K7YmE8j60nrlwfjDUGTGXvJ:bG74zYcgT/Ekd0ryfjkJ

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/4596-0-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000f000000023230-13.dat	CryptoLocker_rule2
behavioral2/memory/4596-25-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/772-26-0x0000000008000000-0x000000000800A000-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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	2024-05-05_a1c5414913a380796e287bb69a40553d_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
772	hasfj.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 4596 wrote to memory of 772	4596	2024-05-05_a1c5414913a380796e287bb69a40553d_cryptolocker.exe	93
PID 4596 wrote to memory of 772	4596	2024-05-05_a1c5414913a380796e287bb69a40553d_cryptolocker.exe	93
PID 4596 wrote to memory of 772	4596	2024-05-05_a1c5414913a380796e287bb69a40553d_cryptolocker.exe	93

C:\Users\Admin\AppData\Local\Temp\2024-05-05_a1c5414913a380796e287bb69a40553d_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-05_a1c5414913a380796e287bb69a40553d_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4596
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:772

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=3956 --field-trial-handle=2356,i,13261194862334667799,7441241219475888176,262144 --variations-seed-version /prefetch:8
1⤵
PID:2716

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\hasfj.exe

Filesize
32KB

MD5
e5598a1a6df671b9dec4055c7552c2a0

SHA1
1c16a0579dc7eab9fcf26cf7fcc2f5886c79c86f

SHA256
64f1664cefcd82e83814365beb11f97ee052228d018f275a6ad76954414a7e6f

SHA512
bcfd57bd9771f1b2647e7f5004a6e44441d7fcc96d63c4c518cda00b398bc8e57bab61745b98f734358d005dc46d9ae3f59b414e7c00c9740f17cfc2821879d4

Download Submit
memory/772-18-0x00000000020A0000-0x00000000020A6000-memory.dmp

Filesize
24KB

Download
memory/772-19-0x0000000003010000-0x0000000003016000-memory.dmp

Filesize
24KB

Download
memory/772-26-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/4596-0-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/4596-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/4596-2-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/4596-3-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download
memory/4596-25-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download