eedc61defd42486a3759d2157f87c097706a841e3a3b1907036340b5de81c248

Analysis

max time kernel
146s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
18-03-2024 23:27

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General

Target

2024-03-18_59f3090db19abfbf3024f92781651739_cryptolocker.exe
Size

97KB
MD5

59f3090db19abfbf3024f92781651739
SHA1

9d1d902a6d22565dd736c12a2775d85a5f9bc0dd
SHA256

eedc61defd42486a3759d2157f87c097706a841e3a3b1907036340b5de81c248
SHA512

ed05e5349972e286ed2c710bbf44b7754b97786f45b3bfea7da9349896ab71e62112781ca5024beff653199b2025cb9fd38c5338862ac2eafe15f468ad422470
SSDEEP

1536:V6QFElP6n+gMQMOtEvwDpjQGYQbN/PKwNgpQb6+:V6a+pOtEvwDpjtzT

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000b000000023227-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000b000000023227-12.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-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	2024-03-18_59f3090db19abfbf3024f92781651739_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
404	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 2616 wrote to memory of 404	2616	2024-03-18_59f3090db19abfbf3024f92781651739_cryptolocker.exe	97
PID 2616 wrote to memory of 404	2616	2024-03-18_59f3090db19abfbf3024f92781651739_cryptolocker.exe	97
PID 2616 wrote to memory of 404	2616	2024-03-18_59f3090db19abfbf3024f92781651739_cryptolocker.exe	97

C:\Users\Admin\AppData\Local\Temp\2024-03-18_59f3090db19abfbf3024f92781651739_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-18_59f3090db19abfbf3024f92781651739_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2616
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:404

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=5956 --field-trial-handle=2256,i,6670388345726423024,18382795228658886258,262144 --variations-seed-version /prefetch:8
1⤵
PID:224

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
98KB

MD5
32c3220d5b89808e8b4b7d50a46678cb

SHA1
417f5c9261144d6638510b4dda7dde8543c474c7

SHA256
4642190942263e4bca8cfe6f61792bdd365861bbdc6af59415d7bdbb6a6d1ae8

SHA512
db33920e06921c2bb926d206f70a5c1373166a4f5a326c65846a0132ab97f98df1913fc0e57170d42065192ed2971fcf8c8e4bf549084a5120a48310b7358f70

Download Submit
memory/404-17-0x00000000005C0000-0x00000000005C6000-memory.dmp

Filesize
24KB

Download
memory/404-20-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/2616-0-0x0000000000620000-0x0000000000626000-memory.dmp

Filesize
24KB

Download
memory/2616-1-0x0000000000620000-0x0000000000626000-memory.dmp

Filesize
24KB

Download
memory/2616-2-0x0000000002070000-0x0000000002076000-memory.dmp

Filesize
24KB

Download