679c9c7e336690ac6c011efc3b81619b0bbadbe3c6c66aa85c25f7bc6100f3b6

Analysis

max time kernel
150s
max time network
159s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
14/03/2024, 15:51

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General

Target

2024-03-14_c8b54b9a5696cba9aa572605b7be69f5_cryptolocker.exe
Size

42KB
MD5

c8b54b9a5696cba9aa572605b7be69f5
SHA1

aa0c189906106289b178db272c5db057883bbc8f
SHA256

679c9c7e336690ac6c011efc3b81619b0bbadbe3c6c66aa85c25f7bc6100f3b6
SHA512

094b027b5731dc15f567fa968c2a8c22cd2abd97cfed17dd2e2bc091e9629a439f75a9745557ec6f4f5cf4a31fcf85f462a952648e5b85e87f3fee2e57ec38ba
SSDEEP

768:V6LsoEEeegiZPvEhHSG+gDYQtOOtEvwDpj/MLam5aFr7YOzzb5:V6QFElP6n+gMQMOtEvwDpjyaYaFAY

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00030000000227e7-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x00030000000227e7-12.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	2024-03-14_c8b54b9a5696cba9aa572605b7be69f5_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2988	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 5104 wrote to memory of 2988	5104	2024-03-14_c8b54b9a5696cba9aa572605b7be69f5_cryptolocker.exe	98
PID 5104 wrote to memory of 2988	5104	2024-03-14_c8b54b9a5696cba9aa572605b7be69f5_cryptolocker.exe	98
PID 5104 wrote to memory of 2988	5104	2024-03-14_c8b54b9a5696cba9aa572605b7be69f5_cryptolocker.exe	98

C:\Users\Admin\AppData\Local\Temp\2024-03-14_c8b54b9a5696cba9aa572605b7be69f5_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-14_c8b54b9a5696cba9aa572605b7be69f5_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:5104
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2988

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=1032 --field-trial-handle=2180,i,12780723798465539942,12010519452607841069,262144 --variations-seed-version /prefetch:8
1⤵
PID:2264

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
42KB

MD5
cb6468a4251157f3f0b4273ac32dcc02

SHA1
6bc3779c616bf37d5d7d0b81794531bee804e712

SHA256
ef34f4d838e3d8192307f8111af1f1bff9d1b77b2276c51d32f2166f46ea0fd8

SHA512
0a8497453e40c000dee82c8dcf11a25c15dff3e83ad0444c471b4db766407c6f9787625277a1f32d55ba896e9a26596902ed31bd3aca112252ec30d43d1feec2

Download Submit
memory/2988-20-0x00000000021E0000-0x00000000021E6000-memory.dmp

Filesize
24KB

Download
memory/5104-0-0x00000000020D0000-0x00000000020D6000-memory.dmp

Filesize
24KB

Download
memory/5104-1-0x00000000020D0000-0x00000000020D6000-memory.dmp

Filesize
24KB

Download
memory/5104-2-0x00000000020F0000-0x00000000020F6000-memory.dmp

Filesize
24KB

Download