9c5ffc0f34db4bdb66898c2ea7e7c002d80e21910fb47ca95de7a683b3a36cb0

Analysis

max time kernel
152s
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
20/05/2024, 20:32

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General

Target

2024-05-20_d0e1f98d523b55f46232cce5abd6d9f3_cryptolocker.exe
Size

41KB
MD5

d0e1f98d523b55f46232cce5abd6d9f3
SHA1

ef9297868eacf93ffe85969acc4cf85996f4c9bf
SHA256

9c5ffc0f34db4bdb66898c2ea7e7c002d80e21910fb47ca95de7a683b3a36cb0
SHA512

d2875eeee75a8a2c69790144c1ae62f83216079c49ae480da8c8007b0cbb6fdceb62ac121482a4dbb6d622305ace4fc7b6f4761913ccbfd1d24cc6c5dc201e6f
SSDEEP

768:bIDOw9UiaCHfjnE0Sf88AvvP1oghYvm9/6DyE9xgym:bIDOw9a0Dwo3P1ojvUSD79yym

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0009000000023266-12.dat	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	2024-05-20_d0e1f98d523b55f46232cce5abd6d9f3_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2244	lossy.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 2260 wrote to memory of 2244	2260	2024-05-20_d0e1f98d523b55f46232cce5abd6d9f3_cryptolocker.exe	93
PID 2260 wrote to memory of 2244	2260	2024-05-20_d0e1f98d523b55f46232cce5abd6d9f3_cryptolocker.exe	93
PID 2260 wrote to memory of 2244	2260	2024-05-20_d0e1f98d523b55f46232cce5abd6d9f3_cryptolocker.exe	93

C:\Users\Admin\AppData\Local\Temp\2024-05-20_d0e1f98d523b55f46232cce5abd6d9f3_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-20_d0e1f98d523b55f46232cce5abd6d9f3_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2260
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  PID:2244

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=3996 --field-trial-handle=2280,i,1836084024518340990,18250262151825427757,262144 --variations-seed-version /prefetch:8
1⤵
PID:2532

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\lossy.exe

Filesize
41KB

MD5
a2e65aeba5b9965510e1b2062b242d55

SHA1
308867f7baae88a6533ff6e43eee36894f4c5fda

SHA256
c95ebf96ce742dbb910e2cb278a406bdcf74894481e4fae423201da9bbf6f143

SHA512
161e3d3be00ff471e3415f216b6eb138bab51723ec6ae2c306d0d379a0a5c823c8792997da022bd5559d9aebb0784c9cfd3bc286dee65b44f061bca2524d4cef

Download Submit
memory/2244-17-0x0000000002070000-0x0000000002076000-memory.dmp

Filesize
24KB

Download
memory/2244-23-0x0000000002040000-0x0000000002046000-memory.dmp

Filesize
24KB

Download
memory/2260-0-0x0000000002310000-0x0000000002316000-memory.dmp

Filesize
24KB

Download
memory/2260-1-0x0000000002310000-0x0000000002316000-memory.dmp

Filesize
24KB

Download
memory/2260-2-0x0000000002190000-0x0000000002196000-memory.dmp

Filesize
24KB

Download