83dc190afa44e898c6f095119264b961d546941c48d90b954b855d58179f2434

Analysis

max time kernel
147s
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
22-05-2024 02:52

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General

Target

2024-05-22_e11098b1984a86d8d1d45df23e569c48_cryptolocker.exe
Size

50KB
MD5

e11098b1984a86d8d1d45df23e569c48
SHA1

b8127d4efe6f9be740dfa2eab64a883e356481f8
SHA256

83dc190afa44e898c6f095119264b961d546941c48d90b954b855d58179f2434
SHA512

3fa71b3fde564a94c0933454daa95ceb154e17e0cd967aeee76be1ed374cf5f21262b3e6f490b8c2d6c12a8af28afd3be345417a043bdde35a42559448363d52
SSDEEP

768:qmOKYQDf5XdrDmjr5tOOtEvwDpjAajFEitQbDmoSQCVUBJUkQqAHBIG05W2MoccN:qmbhXDmjr5MOtEvwDpj5cDtKkQZQ7

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4296-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
C:\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_rule2
behavioral2/memory/4296-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3380-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 2 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4296-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/3380-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4296-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
C:\Users\Admin\AppData\Local\Temp\asih.exe	UPX
behavioral2/memory/4296-26-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/3380-27-0x0000000000500000-0x0000000000510000-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

Processes:

2024-05-22_e11098b1984a86d8d1d45df23e569c48_cryptolocker.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	2024-05-22_e11098b1984a86d8d1d45df23e569c48_cryptolocker.exe

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

3380 asih.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
3380	asih.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-05-22_e11098b1984a86d8d1d45df23e569c48_cryptolocker.exe

description	pid	process	target process
PID 4296 wrote to memory of 3380	4296	2024-05-22_e11098b1984a86d8d1d45df23e569c48_cryptolocker.exe	asih.exe
PID 4296 wrote to memory of 3380	4296	2024-05-22_e11098b1984a86d8d1d45df23e569c48_cryptolocker.exe	asih.exe
PID 4296 wrote to memory of 3380	4296	2024-05-22_e11098b1984a86d8d1d45df23e569c48_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-22_e11098b1984a86d8d1d45df23e569c48_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-22_e11098b1984a86d8d1d45df23e569c48_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4296

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
2⤵
- Executes dropped EXE
PID:3380

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=3912 --field-trial-handle=2744,i,16362475727591565961,3676688664819797550,262144 --variations-seed-version /prefetch:8
1⤵
PID:3860

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

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Downloads

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

Filesize
50KB

MD5
82e14ab34df188f7bb871c6e0091e427

SHA1
7cd99a5abcbd8049cb6c29f712c2e322a0b2473e

SHA256
31f7a4721098673ac81058595901de653c168eaa84baefc4003d81007675ca3b

SHA512
32b6788de2a8a0548d165652caab058688508f30363b82e439068e806517718d7cb30e17de76e958d4193734afb8e43fdb7735ad6a5660031f3bcd5fe9a3f576

Download Submit
memory/3380-18-0x00000000020D0000-0x00000000020D6000-memory.dmp

Filesize
24KB

Download
memory/3380-19-0x00000000020F0000-0x00000000020F6000-memory.dmp

Filesize
24KB

Download
memory/3380-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4296-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4296-1-0x00000000005B0000-0x00000000005B6000-memory.dmp

Filesize
24KB

Download
memory/4296-2-0x00000000005B0000-0x00000000005B6000-memory.dmp

Filesize
24KB

Download
memory/4296-3-0x00000000005D0000-0x00000000005D6000-memory.dmp

Filesize
24KB

Download
memory/4296-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download