553486bcf77b152fed3dc65e08fc5f3e32c15997b36aa9edd3b04a207261156a

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
14/05/2024, 23:27

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General

Target

2024-05-14_8f5fa79534bc61521169d81755a49bb5_cryptolocker.exe
Size

45KB
MD5

8f5fa79534bc61521169d81755a49bb5
SHA1

dfa11ebe336dd345c6b9a3009bb112f77eb26e0c
SHA256

553486bcf77b152fed3dc65e08fc5f3e32c15997b36aa9edd3b04a207261156a
SHA512

f23f10c3c17e3c4a3b869e83e4161041b228f03f99ebe97ee1b1a8b1d5cbe6beced0da452649b646f33aa36ccc51c03c15e0f0eae9a8d01e5aa16191afa74650
SSDEEP

768:P6LsoVEeegiZPvEhHSP+gp/QtOOtEvwDpjBBMLZdzuqpXsiE8Wq/DpkHo:P6Q0ElP6G+gJQMOtEvwDpjB8WMlso

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/4808-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000900000002351c-13.dat	CryptoLocker_rule2
behavioral2/memory/1848-16-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4808-18-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1848-27-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral2/memory/4808-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000900000002351c-13.dat	CryptoLocker_set1
behavioral2/memory/1848-16-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4808-18-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/memory/1848-27-0x0000000000500000-0x000000000050B000-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-1-5-21-1181767204-2009306918-3718769404-1000\Control Panel\International\Geo\Nation	2024-05-14_8f5fa79534bc61521169d81755a49bb5_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1848	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 4808 wrote to memory of 1848	4808	2024-05-14_8f5fa79534bc61521169d81755a49bb5_cryptolocker.exe	90
PID 4808 wrote to memory of 1848	4808	2024-05-14_8f5fa79534bc61521169d81755a49bb5_cryptolocker.exe	90
PID 4808 wrote to memory of 1848	4808	2024-05-14_8f5fa79534bc61521169d81755a49bb5_cryptolocker.exe	90

C:\Users\Admin\AppData\Local\Temp\2024-05-14_8f5fa79534bc61521169d81755a49bb5_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-14_8f5fa79534bc61521169d81755a49bb5_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4808
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1848

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 --field-trial-handle=4176,i,5711962389779687290,1245653010537220991,262144 --variations-seed-version --mojo-platform-channel-handle=4140 /prefetch:8
1⤵
PID:3484

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
45KB

MD5
74e2025f14208a8b74b5c747c2a2f72f

SHA1
026e1575673c4eb64fe81a87a6ad59b3d077b242

SHA256
53123325994c06d868bc6d705f7710082acb8ab835893a428fb2ea60e9198fb3

SHA512
c7eee51d15b89fd7f2684c14d037435fba21431cf9930f65df1523f7e5a1f08446c4ac1b31556fabe0efab675962c8d5de6185ec327960785ac2e09090516eb8

Download Submit
memory/1848-16-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/1848-20-0x0000000000860000-0x0000000000866000-memory.dmp

Filesize
24KB

Download
memory/1848-26-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/1848-27-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/4808-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/4808-1-0x0000000001F60000-0x0000000001F66000-memory.dmp

Filesize
24KB

Download
memory/4808-2-0x0000000002090000-0x0000000002096000-memory.dmp

Filesize
24KB

Download
memory/4808-9-0x0000000001F60000-0x0000000001F66000-memory.dmp

Filesize
24KB

Download
memory/4808-18-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download