4ea516767e1c58e97f4c10330f6ad2d77e4e48596a0cb21123ff630edb7b591e

Analysis

max time kernel
150s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
05-03-2024 12:56

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General

Target

2024-03-05_be1d0faad45f77f34af52bda964e214c_cryptolocker.exe
Size

38KB
MD5

be1d0faad45f77f34af52bda964e214c
SHA1

ef8580435a4737fb5f2c3da3b68e443a8cf6e634
SHA256

4ea516767e1c58e97f4c10330f6ad2d77e4e48596a0cb21123ff630edb7b591e
SHA512

1ef6da14eedcf0da2f8ff54d34034172a27c0d32da361e6de9272028f38ccc7cff33742e10de6985d46764a5ec464bcec349e1d8c4dfe1fee22e85b2e18e27a9
SSDEEP

768:V6LsoEEeegiZPvEhHSG+gDYQtOOtEvwDpj/MLam5ax9vE:V6QFElP6n+gMQMOtEvwDpjyaYa7M

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00080000000232eb-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x00080000000232eb-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-1-5-21-1904519900-954640453-4250331663-1000\Control Panel\International\Geo\Nation	2024-03-05_be1d0faad45f77f34af52bda964e214c_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1132	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 4224 wrote to memory of 1132	4224	2024-03-05_be1d0faad45f77f34af52bda964e214c_cryptolocker.exe	98
PID 4224 wrote to memory of 1132	4224	2024-03-05_be1d0faad45f77f34af52bda964e214c_cryptolocker.exe	98
PID 4224 wrote to memory of 1132	4224	2024-03-05_be1d0faad45f77f34af52bda964e214c_cryptolocker.exe	98

C:\Users\Admin\AppData\Local\Temp\2024-03-05_be1d0faad45f77f34af52bda964e214c_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-05_be1d0faad45f77f34af52bda964e214c_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4224
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1132

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=4172 --field-trial-handle=2588,i,14229658658073991926,6938034815163866135,262144 --variations-seed-version /prefetch:8
1⤵
PID:4416

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
38KB

MD5
5618ca9d33f9646b54e193034e804928

SHA1
98e775aaefdceeb1ea8d9a0abda1f343542696c7

SHA256
502d0aea48f455671fbc013d181b8553fbd48409b306d8e8921ac9f1a336290e

SHA512
33a2792b565acb805f2e6a86eef80d04e7ec6de32c71989f1748dabeb01ef1d4c9bd1fec60d10231a857ba35d1d87e26085a402b4adb8a2a2251b4366f734a51

Download Submit
memory/1132-20-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/4224-0-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download
memory/4224-1-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download
memory/4224-2-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download