71478ac5a1542e20efe00c65a2e126e39149c708d31782cc314dfba869a65a22

Analysis

max time kernel
150s
max time network
172s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
09/03/2024, 15:48

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General

Target

2024-03-09_e782b6767779f57926d114439b705315_cryptolocker.exe
Size

73KB
MD5

e782b6767779f57926d114439b705315
SHA1

5305933a939a89584d7a6a5e54ede6d804b1639b
SHA256

71478ac5a1542e20efe00c65a2e126e39149c708d31782cc314dfba869a65a22
SHA512

fc58a7518bb027d941851e2dc8f3bbdab8b0bf6a8396692fb97268573e241ae7835d01ffed6dbfdf47df494b9e7e6751ea1c072609013fce182b1e6c3541b39b
SSDEEP

1536:X6QFElP6n+gJQMOtEvwDpjBZYTjipvF2bx1UM:X6a+SOtEvwDpjBZYvQd2H

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000800000002330c-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000800000002330c-12.dat	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-1-5-21-1904519900-954640453-4250331663-1000\Control Panel\International\Geo\Nation	2024-03-09_e782b6767779f57926d114439b705315_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
5004	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 2040 wrote to memory of 5004	2040	2024-03-09_e782b6767779f57926d114439b705315_cryptolocker.exe	97
PID 2040 wrote to memory of 5004	2040	2024-03-09_e782b6767779f57926d114439b705315_cryptolocker.exe	97
PID 2040 wrote to memory of 5004	2040	2024-03-09_e782b6767779f57926d114439b705315_cryptolocker.exe	97

C:\Users\Admin\AppData\Local\Temp\2024-03-09_e782b6767779f57926d114439b705315_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-09_e782b6767779f57926d114439b705315_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2040
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:5004

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=3828 --field-trial-handle=2240,i,16875000905773190493,11379096115878622792,262144 --variations-seed-version /prefetch:8
1⤵
PID:4712

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
73KB

MD5
78c587ad8133483a5511937e7a6e5774

SHA1
959a6b5689971ddecde41302259ed0fd54fad05a

SHA256
a2e91b399956dd8cb758fa2b86d4d838115a010df9884b3520a29962668b21f3

SHA512
27e8b1c9708d2211fe4831f7429c8d6d2264fa269872e27ffaff2ec99b99e4df4e47bd7e219bc6be14afe8ba867ee79249e0d3ec6c77bc7ed6780368173bf88d

Download Submit
memory/2040-0-0x00000000006F0000-0x00000000006F6000-memory.dmp

Filesize
24KB

Download
memory/2040-1-0x00000000006F0000-0x00000000006F6000-memory.dmp

Filesize
24KB

Download
memory/2040-2-0x0000000000710000-0x0000000000716000-memory.dmp

Filesize
24KB

Download
memory/5004-17-0x00000000005D0000-0x00000000005D6000-memory.dmp

Filesize
24KB

Download
memory/5004-23-0x0000000000560000-0x0000000000566000-memory.dmp

Filesize
24KB

Download