708b685391ce3dae1cc0a0644135d85b694bd94077f803ee6518a8e331a01796

Analysis

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

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
15/06/2024, 14:35

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-06-15_b5a762993658cb569f29e629d44b9c4e_cryptolocker.exe
Size

53KB
MD5

b5a762993658cb569f29e629d44b9c4e
SHA1

f2ff37a29f0ba7c4f10ea3bfd45a30df34604280
SHA256

708b685391ce3dae1cc0a0644135d85b694bd94077f803ee6518a8e331a01796
SHA512

70597870570df93bd805afe067889e25b2a3a33f8a4bb2b90121f49fcb0fd4bbf232b6eb7cdc826fc3f8eb29a3cb97407f1cbe71055f93bf743b2913a6b68c99
SSDEEP

768:79inqyNR/QtOOtEvwDpjBK/rJ+Nw8qn8pKIRszDr6PR:79mqyNhQMOtEvwDpjBxe8TpXRSDePR

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/3152-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0009000000023598-13.dat	CryptoLocker_rule2
behavioral2/memory/3152-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3636-18-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/3152-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0009000000023598-13.dat	CryptoLocker_set1
behavioral2/memory/3152-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/3636-18-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

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	2024-06-15_b5a762993658cb569f29e629d44b9c4e_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3636	asih.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 3152 wrote to memory of 3636	3152	2024-06-15_b5a762993658cb569f29e629d44b9c4e_cryptolocker.exe	90
PID 3152 wrote to memory of 3636	3152	2024-06-15_b5a762993658cb569f29e629d44b9c4e_cryptolocker.exe	90
PID 3152 wrote to memory of 3636	3152	2024-06-15_b5a762993658cb569f29e629d44b9c4e_cryptolocker.exe	90

C:\Users\Admin\AppData\Local\Temp\2024-06-15_b5a762993658cb569f29e629d44b9c4e_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-15_b5a762993658cb569f29e629d44b9c4e_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3152
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3636

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=4168,i,13640054265074968359,8146127767143474550,262144 --variations-seed-version --mojo-platform-channel-handle=3896 /prefetch:8
1⤵
PID:2740

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

Loading Replay Monitor...

Downloads

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

Filesize
53KB

MD5
a7c5d7b1f219192b96c2cfec8bd3c740

SHA1
59eddde950cf9563a4566c3faf2a7feaab2075ba

SHA256
df3aae39a0f5de1242a2d39aa84c54b2e1aa0f1baa03cbad91283bd91d9a34c6

SHA512
a4ca82c4de5bc8b443a3a41397e61693e8f2927e3ba144bb7d0fb4d2fc67bbca1280eab7cad0afd4635c1aa2f6864767b687f0914e44122013d9cad2b4938537

Download Submit
memory/3152-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3152-1-0x0000000001FD0000-0x0000000001FD6000-memory.dmp

Filesize
24KB

Download
memory/3152-2-0x0000000002110000-0x0000000002116000-memory.dmp

Filesize
24KB

Download
memory/3152-9-0x0000000001FD0000-0x0000000001FD6000-memory.dmp

Filesize
24KB

Download
memory/3152-16-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3636-18-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3636-20-0x0000000001FF0000-0x0000000001FF6000-memory.dmp

Filesize
24KB

Download
memory/3636-26-0x0000000000730000-0x0000000000736000-memory.dmp

Filesize
24KB

Download