44135731c1706d4a349cd14c1fcd1bd7949079d463e69fed2d5c75929cb11608

Analysis

max time kernel
118s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
28/04/2024, 15:23

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General

Target

2024-04-28_0adea8ac326f571649bd9e246e47e177_cryptolocker.exe
Size

31KB
MD5

0adea8ac326f571649bd9e246e47e177
SHA1

80c8f2f722766e1972c1c9ef759cd23d222d8685
SHA256

44135731c1706d4a349cd14c1fcd1bd7949079d463e69fed2d5c75929cb11608
SHA512

9f03ae39a776a587a5edd79fbc343c8709b1bf1098dbef1a121f3052b019be1a39960ac6b704dc4f426a99fb22380f2eff7e2f3b331f073954fc68ea6212c139
SSDEEP

384:bG74uGLLQRcsdeQ72ngEr4K7YmE8j60nrlwfjDUGTGSp:bG74zYcgT/Ekd0ryfjP

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/4076-0-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000b00000002324f-13.dat	CryptoLocker_rule2
behavioral2/memory/4076-24-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/832-26-0x0000000008000000-0x000000000800A000-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	2024-04-28_0adea8ac326f571649bd9e246e47e177_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
832	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 4076 wrote to memory of 832	4076	2024-04-28_0adea8ac326f571649bd9e246e47e177_cryptolocker.exe	91
PID 4076 wrote to memory of 832	4076	2024-04-28_0adea8ac326f571649bd9e246e47e177_cryptolocker.exe	91
PID 4076 wrote to memory of 832	4076	2024-04-28_0adea8ac326f571649bd9e246e47e177_cryptolocker.exe	91

C:\Users\Admin\AppData\Local\Temp\2024-04-28_0adea8ac326f571649bd9e246e47e177_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-28_0adea8ac326f571649bd9e246e47e177_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4076
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:832

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=4264 --field-trial-handle=2656,i,16940681401824032220,151921362336696246,262144 --variations-seed-version /prefetch:8
1⤵
PID:4152

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
31KB

MD5
bb09420a950eb8729c06f8fac81c7e2f

SHA1
008af559eb12abfadab840745c9df7faf17b860b

SHA256
d9eb5675cad08e07e7b95c7364230ac4a2e44b32e5dbc1914dbf438f304d7dad

SHA512
dc726e865925e5cb6c3ee6c74ba0a5d51e70614345d8929741153bd2ffba9d865f7a37f947c5298fffb33cb15337725950518b16b894194bef3c2ae44095df34

Download Submit
memory/832-18-0x0000000003010000-0x0000000003016000-memory.dmp

Filesize
24KB

Download
memory/832-25-0x0000000002090000-0x0000000002096000-memory.dmp

Filesize
24KB

Download
memory/832-26-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/4076-0-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/4076-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/4076-2-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/4076-3-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download
memory/4076-24-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download