76c7f77a8643e9a656b3edae1b5c54e4c1fcb2f573b6ec00b694f9016d8c1b92

Analysis

max time kernel
151s
max time network
158s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
01/06/2024, 21:00

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General

Target

2024-06-01_dbd5b29b98c982b33b39b18b83ecc111_cryptolocker.exe
Size

64KB
MD5

dbd5b29b98c982b33b39b18b83ecc111
SHA1

f6be0c98ea60cad9f6aa2d728205f34de61f195a
SHA256

76c7f77a8643e9a656b3edae1b5c54e4c1fcb2f573b6ec00b694f9016d8c1b92
SHA512

5019eaf0f8b4ed9cabb81c689371a94531279816781a1d636e40b74238ad763cc32d19c16e7c3bb086c5c62f28f5b5d5ce4a0d1a95e6ae618dbf8d63068646d3
SSDEEP

1536:qmbhXDmjr5MOtEvwDpj5cDtKkQZQRKb61vSbgtsiET:BbdDmjr+OtEvwDpjM8j

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/372-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000800000002326a-13.dat	CryptoLocker_rule2
behavioral2/memory/372-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2336-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 2 IoCs

resource	yara_rule
behavioral2/memory/372-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/2336-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/372-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/files/0x000800000002326a-13.dat	UPX
behavioral2/memory/372-26-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/2336-27-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

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	2024-06-01_dbd5b29b98c982b33b39b18b83ecc111_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2336	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 372 wrote to memory of 2336	372	2024-06-01_dbd5b29b98c982b33b39b18b83ecc111_cryptolocker.exe	91
PID 372 wrote to memory of 2336	372	2024-06-01_dbd5b29b98c982b33b39b18b83ecc111_cryptolocker.exe	91
PID 372 wrote to memory of 2336	372	2024-06-01_dbd5b29b98c982b33b39b18b83ecc111_cryptolocker.exe	91

C:\Users\Admin\AppData\Local\Temp\2024-06-01_dbd5b29b98c982b33b39b18b83ecc111_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-01_dbd5b29b98c982b33b39b18b83ecc111_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:372
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2336

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=4256 --field-trial-handle=2252,i,16022092570067181109,3235558581947505669,262144 --variations-seed-version /prefetch:8
1⤵
PID:2208

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
64KB

MD5
664b4327917c5c390a57593009c506eb

SHA1
0092a01037b5b5edcffeeebab3f8c92af7da37e8

SHA256
9a370f888609fb625d914a8f6cb7fa217f75477c632e37129a85753c6984a84f

SHA512
5a6c5b4015b3736c3ae3612cc57a197b57ef89de5b01ac11a0beb21a3ce25b874bd5d730d795030828b3cb1f911e7304c8c3e652d23888d21fa079cae9bcab24

Download Submit
memory/372-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/372-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/372-2-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/372-3-0x0000000002100000-0x0000000002106000-memory.dmp

Filesize
24KB

Download
memory/372-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2336-18-0x0000000001F50000-0x0000000001F56000-memory.dmp

Filesize
24KB

Download
memory/2336-19-0x0000000001F70000-0x0000000001F76000-memory.dmp

Filesize
24KB

Download
memory/2336-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download