15cc1b70175b7d6a987399c3a59695419a97164b5a467408f734b205939dd047

Analysis

max time kernel
146s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
25-06-2024 19:48

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General

Target

2024-06-25_791921951207ef8a89e90136f135e0a4_cryptolocker.exe
Size

34KB
MD5

791921951207ef8a89e90136f135e0a4
SHA1

71cfc8bc74d4d84f0a31d65448b9c0fa44db8f31
SHA256

15cc1b70175b7d6a987399c3a59695419a97164b5a467408f734b205939dd047
SHA512

b40bab32a81e908f628f44fbb82f616fea62fa3b2a60f2f9793b0773b153181ac9623900533a6dfbadf7314233c7e08f56155b6cc315726c216362f954165436
SSDEEP

384:bG74uGLLQRcsdeQ72ngEr4K7YmE8j60nrlwfjDUGTGXvJF3p:bG74zYcgT/Ekd0ryfjkb5

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/4036-0-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0009000000023540-13.dat	CryptoLocker_rule2
behavioral2/memory/4036-18-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4204-17-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4204-27-0x0000000008000000-0x000000000800A000-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-1-5-21-1181767204-2009306918-3718769404-1000\Control Panel\International\Geo\Nation	2024-06-25_791921951207ef8a89e90136f135e0a4_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4204	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 4036 wrote to memory of 4204	4036	2024-06-25_791921951207ef8a89e90136f135e0a4_cryptolocker.exe	88
PID 4036 wrote to memory of 4204	4036	2024-06-25_791921951207ef8a89e90136f135e0a4_cryptolocker.exe	88
PID 4036 wrote to memory of 4204	4036	2024-06-25_791921951207ef8a89e90136f135e0a4_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-06-25_791921951207ef8a89e90136f135e0a4_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-25_791921951207ef8a89e90136f135e0a4_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4036
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:4204

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=3628,i,13281073920029625837,8253721632651544158,262144 --variations-seed-version --mojo-platform-channel-handle=3888 /prefetch:8
1⤵
PID:4832

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
35KB

MD5
47ca8f9473b202b4cbdac48d12220d1f

SHA1
d3f1bd358cda84afcd76d6beb0435b5c78a2369d

SHA256
e87db28d478a38a25dcf60703d45c0f0cc7360fe7dac4a4c245d112e9ad878e7

SHA512
af4510731984ffcd1b4aa18a78a4a72adb3ba82cc241805ba4491ce1c0ac721dc245a3a7f1725fa74d4acd3456275c689950c2d02d5cdbaa939fe11ca5c2c447

Download Submit
memory/4036-0-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/4036-1-0x00000000005F0000-0x00000000005F6000-memory.dmp

Filesize
24KB

Download
memory/4036-2-0x00000000023C0000-0x00000000023C6000-memory.dmp

Filesize
24KB

Download
memory/4036-9-0x00000000005F0000-0x00000000005F6000-memory.dmp

Filesize
24KB

Download
memory/4036-18-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/4204-17-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/4204-20-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download
memory/4204-26-0x0000000002250000-0x0000000002256000-memory.dmp

Filesize
24KB

Download
memory/4204-27-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download