1a99f0c671beef9bced656a074813ee1fe9e9ceea3eaf85ac9be023c8c58312f

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240611-en
resource tags

arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
submitted
16/06/2024, 11:55

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General

Target

2024-06-16_4534f030f7eb6d347614bd7e52b55775_cryptolocker.exe
Size

48KB
MD5

4534f030f7eb6d347614bd7e52b55775
SHA1

d2f0de3c18d98c53451b0c21e408212777c23cc7
SHA256

1a99f0c671beef9bced656a074813ee1fe9e9ceea3eaf85ac9be023c8c58312f
SHA512

148b4477368e1ab873489c836b6ece9f7f7bb5a2be4b7cb9501202cc033a0b44a91723ffcf930533cbe7a4871fb1e0bf9f979cc0fad1e58d30221f322e68735a
SSDEEP

384:e/4wODQkzonAYsju5N/surDQtOOtEvwDpjqIGROqS/WccJVJwi2B5oCCM8CLW2Vv:79inqyNR/QtOOtEvwDpjBKccJVODvy36

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/4564-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x00090000000235a4-13.dat	CryptoLocker_rule2
behavioral2/memory/4564-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3412-18-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/4564-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x00090000000235a4-13.dat	CryptoLocker_set1
behavioral2/memory/4564-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/3412-18-0x0000000000500000-0x000000000050F000-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-1-5-21-3665033694-1447845302-680750983-1000\Control Panel\International\Geo\Nation	2024-06-16_4534f030f7eb6d347614bd7e52b55775_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3412	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 4564 wrote to memory of 3412	4564	2024-06-16_4534f030f7eb6d347614bd7e52b55775_cryptolocker.exe	89
PID 4564 wrote to memory of 3412	4564	2024-06-16_4534f030f7eb6d347614bd7e52b55775_cryptolocker.exe	89
PID 4564 wrote to memory of 3412	4564	2024-06-16_4534f030f7eb6d347614bd7e52b55775_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-06-16_4534f030f7eb6d347614bd7e52b55775_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-16_4534f030f7eb6d347614bd7e52b55775_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4564
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3412

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 --field-trial-handle=4236,i,1400471177590024469,587385956640537806,262144 --variations-seed-version --mojo-platform-channel-handle=4112 /prefetch:8
1⤵
PID:208

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
48KB

MD5
38e11426045f453d557b7f4e145ba79a

SHA1
f8a655818a3a464920df08774fdc5feda8a1361c

SHA256
68cfaea3283ddb76a111b2f3a39a1b5588b53f4ab31324a9b90afbb6c6b1f3f0

SHA512
55652b05ef38ea4e5a659324a70ed1959e32c1d7b5bb1ef094083fa729d717eead37814d32f3221f8c52c7b97d017b1a9923807d2e74cc7f4c2cc40cd0b405b4

Download Submit
memory/3412-18-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3412-20-0x00000000007D0000-0x00000000007D6000-memory.dmp

Filesize
24KB

Download
memory/3412-26-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/4564-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/4564-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4564-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/4564-9-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4564-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download