443e411cae6a2a4a6f0895f03033386dd6c6b2cc86107088935907a0d6cd0638

Analysis

max time kernel
143s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
25-03-2024 18:36

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-03-25_8e41718523009998f94b5d5c63276f24_cryptolocker.exe
Size

73KB
MD5

8e41718523009998f94b5d5c63276f24
SHA1

f3232e7f7efee7f3819231b5def47f3d71b43245
SHA256

443e411cae6a2a4a6f0895f03033386dd6c6b2cc86107088935907a0d6cd0638
SHA512

4fe2832d56d812838c3e349745aa773e983a19aca42cbee18096a27b98587ea4f7f9123b2eeb8b65187ed592f8c26f83484fdab6bd693573ea78c718ff390067
SSDEEP

1536:X6QFElP6n+gJQMOtEvwDpjBZYTjipvF2bx1rHsop:X6a+SOtEvwDpjBZYvQd25

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000800000002333c-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000800000002333c-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	2024-03-25_8e41718523009998f94b5d5c63276f24_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
916	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 3288 wrote to memory of 916	3288	2024-03-25_8e41718523009998f94b5d5c63276f24_cryptolocker.exe	97
PID 3288 wrote to memory of 916	3288	2024-03-25_8e41718523009998f94b5d5c63276f24_cryptolocker.exe	97
PID 3288 wrote to memory of 916	3288	2024-03-25_8e41718523009998f94b5d5c63276f24_cryptolocker.exe	97

C:\Users\Admin\AppData\Local\Temp\2024-03-25_8e41718523009998f94b5d5c63276f24_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-25_8e41718523009998f94b5d5c63276f24_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3288
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:916

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=4868 --field-trial-handle=2276,i,1205556100727695622,5044463180471657307,262144 --variations-seed-version /prefetch:8
1⤵
PID:4500

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

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
73KB

MD5
9dcca9ea5c1b8531c924ac3e94eda724

SHA1
80f10e8f4f21f123028712c53b50c53b94dec63c

SHA256
2648340a1443a0e81d4eb29dc1ca871dd1d079b59ca891f0fada725b4b3ebae4

SHA512
592c728c8c72e1a27612b3869632e8895dcc9f210c053a3b31cfa890803586fb74ea05e0c8043123b7d19abf5a7645788d6acdbce811600a1219b04c25fbd98e

Download Submit
memory/916-17-0x00000000006D0000-0x00000000006D6000-memory.dmp

Filesize
24KB

Download
memory/916-19-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/3288-0-0x00000000006E0000-0x00000000006E6000-memory.dmp

Filesize
24KB

Download
memory/3288-1-0x00000000006E0000-0x00000000006E6000-memory.dmp

Filesize
24KB

Download
memory/3288-2-0x00000000021B0000-0x00000000021B6000-memory.dmp

Filesize
24KB

Download