c1f636b64501de80ea07ae94219559bb9fb40dbe584b570714945a6bffd4b04b

Analysis

max time kernel
151s
max time network
165s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
16/06/2024, 18:27

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General

Target

2024-06-16_32e38a5e45a1213a2fd87d685f9d8eb4_cryptolocker.exe
Size

47KB
MD5

32e38a5e45a1213a2fd87d685f9d8eb4
SHA1

b482ff4091fca8971099dd0e9b209eff821852f2
SHA256

c1f636b64501de80ea07ae94219559bb9fb40dbe584b570714945a6bffd4b04b
SHA512

dabb66da1ca6f54fc18abd4a8d877f114598ea5efe2bfcf489e035effb0579b4d616f293cef62a5d9f072dc65812dfabd9c4484b71a7a97372f272a0666a88c0
SSDEEP

384:e/4wODQkzonAYsju5N/surDQtOOtEvwDpjqIGROqS/WccJVJwi2B5oCCM8CLW2Vr:79inqyNR/QtOOtEvwDpjBKccJVODvy3m

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 3 IoCs

resource	yara_rule
behavioral2/memory/3696-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000900000002324b-13.dat	CryptoLocker_rule2
behavioral2/memory/3696-25-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral2/memory/3696-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000900000002324b-13.dat	CryptoLocker_set1
behavioral2/memory/3696-25-0x0000000000500000-0x000000000050F000-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-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	2024-06-16_32e38a5e45a1213a2fd87d685f9d8eb4_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1232	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 3696 wrote to memory of 1232	3696	2024-06-16_32e38a5e45a1213a2fd87d685f9d8eb4_cryptolocker.exe	92
PID 3696 wrote to memory of 1232	3696	2024-06-16_32e38a5e45a1213a2fd87d685f9d8eb4_cryptolocker.exe	92
PID 3696 wrote to memory of 1232	3696	2024-06-16_32e38a5e45a1213a2fd87d685f9d8eb4_cryptolocker.exe	92

C:\Users\Admin\AppData\Local\Temp\2024-06-16_32e38a5e45a1213a2fd87d685f9d8eb4_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-16_32e38a5e45a1213a2fd87d685f9d8eb4_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3696
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1232

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=1340 --field-trial-handle=2276,i,11674642242468042059,14711253743544118298,262144 --variations-seed-version /prefetch:8
1⤵
PID:1088

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
47KB

MD5
ad23261eac318090d0cf1b0bf399bc72

SHA1
75bbf5bd6cbc0aee49213eb54380f2421320807f

SHA256
21b7e17ca20d6a556c27de25d193190a019ee3cb1656bac90f69b564fcb95a64

SHA512
3df335cb2325b811cf43a4dad7e5f5fab566b0b604ebd27ba96b7068f7bdcfd34ddf27b0045bad63fd4ad3263f4065aea1861f6cc3d7998516bf76afaab4e540

Download Submit
memory/1232-18-0x0000000000590000-0x0000000000596000-memory.dmp

Filesize
24KB

Download
memory/1232-24-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/3696-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3696-1-0x00000000020D0000-0x00000000020D6000-memory.dmp

Filesize
24KB

Download
memory/3696-2-0x00000000020D0000-0x00000000020D6000-memory.dmp

Filesize
24KB

Download
memory/3696-3-0x0000000002100000-0x0000000002106000-memory.dmp

Filesize
24KB

Download
memory/3696-25-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download