8043f91e1be73eb5a84d54907b171a14b8f74f8e4cccbcccb2cfe4165a1156d3

Analysis

max time kernel
168s
max time network
193s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
07/03/2024, 15:25

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General

Target

2024-03-07_38e1eb837c083e8a2ce3fc090f1c08d1_cryptolocker.exe
Size

36KB
MD5

38e1eb837c083e8a2ce3fc090f1c08d1
SHA1

085aa62007c9df3441cc5da4f235da4952111931
SHA256

8043f91e1be73eb5a84d54907b171a14b8f74f8e4cccbcccb2cfe4165a1156d3
SHA512

976554838dfac8b98a448fbf25a7746c9c41b2a91e6cc0a670734e17d677e133d37052bb4c1e5cf33350b096b511746a7ce04c917728824a12d74db32bfd1591
SSDEEP

768:vQz7yVEhs9+js1SQtOOtEvwDpjz9+4/UkRYzMAZ+7:vj+jsMQMOtEvwDpj5HcSYPw

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000800000002331c-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000800000002331c-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	2024-03-07_38e1eb837c083e8a2ce3fc090f1c08d1_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1472	misid.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 2912 wrote to memory of 1472	2912	2024-03-07_38e1eb837c083e8a2ce3fc090f1c08d1_cryptolocker.exe	96
PID 2912 wrote to memory of 1472	2912	2024-03-07_38e1eb837c083e8a2ce3fc090f1c08d1_cryptolocker.exe	96
PID 2912 wrote to memory of 1472	2912	2024-03-07_38e1eb837c083e8a2ce3fc090f1c08d1_cryptolocker.exe	96

C:\Users\Admin\AppData\Local\Temp\2024-03-07_38e1eb837c083e8a2ce3fc090f1c08d1_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-07_38e1eb837c083e8a2ce3fc090f1c08d1_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2912
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:1472

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=4492 --field-trial-handle=2272,i,11831746627654527593,10138103687018060346,262144 --variations-seed-version /prefetch:8
1⤵
PID:2612

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\misid.exe

Filesize
37KB

MD5
76f6f44bc25491f7fff03b71eb68543c

SHA1
372435d9390c2656409e0dc535b5733672c06e39

SHA256
b2708acc1948cf91f373eee73dc78be42e4544372fa8c7f7601e0086d20a044b

SHA512
04fbd62c281054964f989d426013e4bc20e839d24c44790394293a5fb6d3b0e42c17202ea99490bb327e61ae11fa848e481417e04bc713f0eb8247747c5cabe9

Download Submit
memory/1472-17-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/1472-19-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/2912-0-0x00000000006F0000-0x00000000006F6000-memory.dmp

Filesize
24KB

Download
memory/2912-1-0x00000000006F0000-0x00000000006F6000-memory.dmp

Filesize
24KB

Download
memory/2912-2-0x00000000021B0000-0x00000000021B6000-memory.dmp

Filesize
24KB

Download