65a5ec5afa440563a609ea78d8debb7b521d9a97e1f4633a828f5a942b28ffde

Analysis

max time kernel
151s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
10/06/2024, 15:50

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General

Target

2024-06-10_4d38a3673f6f736f92d1f6726226b661_cryptolocker.exe
Size

32KB
MD5

4d38a3673f6f736f92d1f6726226b661
SHA1

c351a0dfdb17c4adbbce90a3247386cbc7ed10aa
SHA256

65a5ec5afa440563a609ea78d8debb7b521d9a97e1f4633a828f5a942b28ffde
SHA512

bb10e4f9bcb5d6a71eaf7fe852c0fa3156e4b499864279a9c37ff13cf6f1eaadbb7350fc96e9e3d125fd9f6286ff7527201a945a15e89f1c93c4bf7d706afb29
SSDEEP

384:bG74uGLLQRcsdeQ72ngEr4K7YmE8j60nrlwfjDUGTGOo9GcPUL3:bG74zYcgT/Ekd0ryfjoGcPo3

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/4504-0-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0008000000023288-13.dat	CryptoLocker_rule2
behavioral2/memory/4504-25-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2320-26-0x0000000008000000-0x000000000800A000-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	2024-06-10_4d38a3673f6f736f92d1f6726226b661_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2320	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 4504 wrote to memory of 2320	4504	2024-06-10_4d38a3673f6f736f92d1f6726226b661_cryptolocker.exe	91
PID 4504 wrote to memory of 2320	4504	2024-06-10_4d38a3673f6f736f92d1f6726226b661_cryptolocker.exe	91
PID 4504 wrote to memory of 2320	4504	2024-06-10_4d38a3673f6f736f92d1f6726226b661_cryptolocker.exe	91

C:\Users\Admin\AppData\Local\Temp\2024-06-10_4d38a3673f6f736f92d1f6726226b661_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-10_4d38a3673f6f736f92d1f6726226b661_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4504
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:2320

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=1416 --field-trial-handle=3240,i,13319578961094268484,16557498665191861597,262144 --variations-seed-version /prefetch:8
1⤵
PID:4184

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
33KB

MD5
0e58aa178f82be8c0a542ab58a7f10c5

SHA1
a27a54617859cc48d358cf75d2303090d9e475e5

SHA256
c79c75d5a5046b1d9b0e70eab3cb7f2b2192c02e0d6ba3bb7df146e4105a548c

SHA512
9ae7c7c42410743eeae9f32583410f340d68d5f4d8ce11bec2cecca15d83f36e76b43b66a96a591c7ab55efd7c6a0fca158219be5ee834dd3818e157d479b80d

Download Submit
memory/2320-19-0x0000000002280000-0x0000000002286000-memory.dmp

Filesize
24KB

Download
memory/2320-18-0x0000000002110000-0x0000000002116000-memory.dmp

Filesize
24KB

Download
memory/2320-26-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/4504-0-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/4504-1-0x0000000002260000-0x0000000002266000-memory.dmp

Filesize
24KB

Download
memory/4504-2-0x0000000002260000-0x0000000002266000-memory.dmp

Filesize
24KB

Download
memory/4504-3-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download
memory/4504-25-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download