96c3a62d00ed6d8b28b955658b1fa53d7ccf5fe3cf831aa74ed47dcf3deaa0eb

Analysis

max time kernel
142s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
21-05-2024 15:41

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General

Target

2024-05-21_6d244256c1f21f31dfbc46cbaead4009_cryptolocker.exe
Size

52KB
MD5

6d244256c1f21f31dfbc46cbaead4009
SHA1

40db79418561cc3e9c2d6bbdfa343c3e416b1873
SHA256

96c3a62d00ed6d8b28b955658b1fa53d7ccf5fe3cf831aa74ed47dcf3deaa0eb
SHA512

37a9071d2135d3555351003e961bd2f4b57478069d797ef15c5253f3545c48cfe90ed5994e4ad8b44859da8482c772044758cd1b3cf717807fb052f947184d52
SSDEEP

768:79inqyNR/QtOOtEvwDpjBK/rJ+Nw8qn8pKIRszDr6aS:79mqyNhQMOtEvwDpjBxe8TpXRSDeaS

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 3 IoCs

Processes:

resource	yara_rule
behavioral2/memory/3176-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
C:\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_rule2
behavioral2/memory/3176-24-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

Processes:

resource	yara_rule
behavioral2/memory/3176-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
C:\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_set1
behavioral2/memory/3176-24-0x0000000000500000-0x000000000050F000-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

Processes:

2024-05-21_6d244256c1f21f31dfbc46cbaead4009_cryptolocker.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	2024-05-21_6d244256c1f21f31dfbc46cbaead4009_cryptolocker.exe

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

1932 asih.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
1932	asih.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-05-21_6d244256c1f21f31dfbc46cbaead4009_cryptolocker.exe

description	pid	process	target process
PID 3176 wrote to memory of 1932	3176	2024-05-21_6d244256c1f21f31dfbc46cbaead4009_cryptolocker.exe	asih.exe
PID 3176 wrote to memory of 1932	3176	2024-05-21_6d244256c1f21f31dfbc46cbaead4009_cryptolocker.exe	asih.exe
PID 3176 wrote to memory of 1932	3176	2024-05-21_6d244256c1f21f31dfbc46cbaead4009_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-21_6d244256c1f21f31dfbc46cbaead4009_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-21_6d244256c1f21f31dfbc46cbaead4009_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3176
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1932

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=3696 --field-trial-handle=3192,i,2785050981002401924,4037047756083432660,262144 --variations-seed-version /prefetch:8
1⤵
PID:4256

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
52KB

MD5
84c0e3e2370d2db81fbd09ea7b964a7e

SHA1
98e0dc8e51a492dc85bbaa3daebccc7074e9ed09

SHA256
2358ce91e2a2406d0ae026ec30cac3d2bd3238f571934f107a319558cba9cf42

SHA512
a710eee8b4c108640a32e8f5ac0e37fbdbf439c26023fbd60b28bfd0bcca836a6ae5f3933681b1eb96c742df2f9cba15d8ec957f8c9cb654b6f12d313ae2eb5d

Download Submit
memory/1932-18-0x00000000006D0000-0x00000000006D6000-memory.dmp

Filesize
24KB

Download
memory/1932-25-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/3176-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3176-1-0x00000000005F0000-0x00000000005F6000-memory.dmp

Filesize
24KB

Download
memory/3176-2-0x00000000005F0000-0x00000000005F6000-memory.dmp

Filesize
24KB

Download
memory/3176-3-0x0000000000610000-0x0000000000616000-memory.dmp

Filesize
24KB

Download
memory/3176-24-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download