74c4c9f6856223aa4d708bcde0710433082ccd2403b7d13766e2fdd6721ff960

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
21-05-2024 19:23

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General

Target

2024-05-21_039272ba85d880c708f0d6bbde07a17b_cryptolocker.exe
Size

49KB
MD5

039272ba85d880c708f0d6bbde07a17b
SHA1

4c3123fce9ee9406b2be696033a17e9143eec1b5
SHA256

74c4c9f6856223aa4d708bcde0710433082ccd2403b7d13766e2fdd6721ff960
SHA512

67e877c4900e5a7d022d48f299be2865625a596fd813110aa1fb37628d767398a5620736583516271b4f15afd6ab4b18d5576fbf9fc4897808778c32918db9a7
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/BtOOtEvwDpjBVaD3E09vdXfc:X6QFElP6n+gJBMOtEvwDpjBtEdXfc

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\asih.exe	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_039272ba85d880c708f0d6bbde07a17b_cryptolocker.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\Control Panel\International\Geo\Nation	2024-05-21_039272ba85d880c708f0d6bbde07a17b_cryptolocker.exe

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

1772 asih.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
1772	asih.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-05-21_039272ba85d880c708f0d6bbde07a17b_cryptolocker.exe

description	pid	process	target process
PID 3592 wrote to memory of 1772	3592	2024-05-21_039272ba85d880c708f0d6bbde07a17b_cryptolocker.exe	asih.exe
PID 3592 wrote to memory of 1772	3592	2024-05-21_039272ba85d880c708f0d6bbde07a17b_cryptolocker.exe	asih.exe
PID 3592 wrote to memory of 1772	3592	2024-05-21_039272ba85d880c708f0d6bbde07a17b_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-21_039272ba85d880c708f0d6bbde07a17b_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-21_039272ba85d880c708f0d6bbde07a17b_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3592

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
2⤵
- Executes dropped EXE
PID:1772

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 --field-trial-handle=4444,i,16710585221322798697,8586257254049248207,262144 --variations-seed-version --mojo-platform-channel-handle=3452 /prefetch:8
1⤵
PID:1792

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
49KB

MD5
1e06c5bd4384691adcbb02e53d950c50

SHA1
d2467e9e0562d6696dc57b22f69c6f47059abda7

SHA256
a0ef7ffdfad9878f25e6b3e364456475147fa29e55a25f502d444e50d300aead

SHA512
ebee32cf67987053cf84ad92f9f8db5ef793a3183364e7ee594b7342ed68d97ddc51a8839bb291e03350e980a364b76b59a4ca6d1d2ee28f7e366219fffa1523

Download Submit
memory/1772-23-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/1772-17-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/3592-0-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/3592-1-0x00000000006D0000-0x00000000006D6000-memory.dmp

Filesize
24KB

Download
memory/3592-8-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download