48012e1ba901ab6b720b5d0f31faa9cc120328bec0dd74c144968163f4bf9ba3

Analysis

max time kernel
165s
max time network
176s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
19-03-2024 20:26

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General

Target

2024-03-19_133ea4e0017ac7f3f08c701c5b924b96_cryptolocker.exe
Size

52KB
MD5

133ea4e0017ac7f3f08c701c5b924b96
SHA1

c36f09aa44894cfee08a85871dc878e3464fe0d3
SHA256

48012e1ba901ab6b720b5d0f31faa9cc120328bec0dd74c144968163f4bf9ba3
SHA512

e82d90ea306ef6ffa254b0e93d574c882d6746ff359f97d6a64a62503098369c0e7584748c85d1f65983981eb3751644c40d1922f2514a9f4d15ea58e5148275
SSDEEP

768:79inqyNR/QtOOtEvwDpjBK/rJ+Nw8qn8pKIRszW:79mqyNhQMOtEvwDpjBxe8TpXRSW

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 3 IoCs

resource	yara_rule
behavioral2/memory/2388-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0003000000022ea1-13.dat	CryptoLocker_rule2
behavioral2/memory/2388-25-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral2/memory/2388-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0003000000022ea1-13.dat	CryptoLocker_set1
behavioral2/memory/2388-25-0x0000000000500000-0x000000000050F000-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-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	2024-03-19_133ea4e0017ac7f3f08c701c5b924b96_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3268	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 2388 wrote to memory of 3268	2388	2024-03-19_133ea4e0017ac7f3f08c701c5b924b96_cryptolocker.exe	99
PID 2388 wrote to memory of 3268	2388	2024-03-19_133ea4e0017ac7f3f08c701c5b924b96_cryptolocker.exe	99
PID 2388 wrote to memory of 3268	2388	2024-03-19_133ea4e0017ac7f3f08c701c5b924b96_cryptolocker.exe	99

C:\Users\Admin\AppData\Local\Temp\2024-03-19_133ea4e0017ac7f3f08c701c5b924b96_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-19_133ea4e0017ac7f3f08c701c5b924b96_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2388
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3268

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=1348 --field-trial-handle=2280,i,716736634476467098,11449718822158202904,262144 --variations-seed-version /prefetch:8
1⤵
PID:4356

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\asih.exe

Filesize
53KB

MD5
93ca00105654b8cf46ae5e2c0423c011

SHA1
aa5b676046ea18bb6c7432ae67d531b4113c47df

SHA256
111966d6f807bc34cb7bb3b8f7f92fb004ddab6a7530aed5d97004ffcbc262bb

SHA512
1e171f630c54698e4e8f3c0ae055f861dbd42d6302751e78106c2732dafd915d3d3a476b71753bfac2b644d51b36acd19c2140cfbadab293e2ca1a71df9e9805

Download Submit
memory/2388-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2388-1-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download
memory/2388-2-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download
memory/2388-3-0x0000000000540000-0x0000000000546000-memory.dmp

Filesize
24KB

Download
memory/2388-25-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3268-18-0x00000000005B0000-0x00000000005B6000-memory.dmp

Filesize
24KB

Download
memory/3268-19-0x00000000005D0000-0x00000000005D6000-memory.dmp

Filesize
24KB

Download