972ae2e878a7835c50d210d25aa655932af0a54603911ee8ddb49cc0de714565

Analysis

max time kernel
147s
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
27/04/2024, 05:20

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General

Target

2024-04-27_f2d8b12a72ca71c468c770dc70920ab0_cryptolocker.exe
Size

47KB
MD5

f2d8b12a72ca71c468c770dc70920ab0
SHA1

b5874a62b3f110326f5fad29e8b19eb97ffd8d70
SHA256

972ae2e878a7835c50d210d25aa655932af0a54603911ee8ddb49cc0de714565
SHA512

882635234cfd82c14fec4013a2b3355d5e01eeef52ec884c483e9b1e31183f0c9bd42dc1298364cfdb5e7608bccc798f0eaf9ee83db831ddbb50431032ec7fbd
SSDEEP

768:qmOKYQDf5XdrDmjr5tOOtEvwDpjAajFEitQbDmoSQCVUBJUkQqAHBIG05W2Mobpv:qmbhXDmjr5MOtEvwDpj5cDtKkQZQjv

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/3292-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3292-10-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000800000002325b-14.dat	CryptoLocker_rule2
behavioral2/memory/2208-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 2 IoCs

resource	yara_rule
behavioral2/memory/3292-10-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/2208-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/3292-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/3292-10-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/files/0x000800000002325b-14.dat	UPX
behavioral2/memory/2208-27-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

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	2024-04-27_f2d8b12a72ca71c468c770dc70920ab0_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2208	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 3292 wrote to memory of 2208	3292	2024-04-27_f2d8b12a72ca71c468c770dc70920ab0_cryptolocker.exe	92
PID 3292 wrote to memory of 2208	3292	2024-04-27_f2d8b12a72ca71c468c770dc70920ab0_cryptolocker.exe	92
PID 3292 wrote to memory of 2208	3292	2024-04-27_f2d8b12a72ca71c468c770dc70920ab0_cryptolocker.exe	92

C:\Users\Admin\AppData\Local\Temp\2024-04-27_f2d8b12a72ca71c468c770dc70920ab0_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-27_f2d8b12a72ca71c468c770dc70920ab0_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3292
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2208

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=1032 --field-trial-handle=2328,i,5873823382323802923,13134441441264702821,262144 --variations-seed-version /prefetch:8
1⤵
PID:1880

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
47KB

MD5
e12e3640661d537c8274096382b573d2

SHA1
ac122c039425519c39a2bd693509fbad919cc241

SHA256
70e5ec68a06c0021464d3c21689c0c3a84e020f3398d2ed1c0106f964188b3c7

SHA512
aadbcfdc999c422d253ce8b88b9d60f78316c4f91b8bb582a717b65fc67ed7898c827104b877e29024bcc65804dc998432cd1baa95d1c926cac8519daf1c7010

Download Submit
memory/2208-19-0x0000000000760000-0x0000000000766000-memory.dmp

Filesize
24KB

Download
memory/2208-25-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/2208-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3292-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3292-1-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/3292-2-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/3292-3-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/3292-10-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download