8d48900f6f473f0762bbc7256bc53c3fff5ea72d02aaab023b8d77400c357bf6

Analysis

max time kernel
157s
max time network
170s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
01/07/2024, 20:23

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General

Target

2024-07-01_229617050744b0e1f74ea38e0f449331_cryptolocker.exe
Size

37KB
MD5

229617050744b0e1f74ea38e0f449331
SHA1

3ab8befa108fa071fce626b0d25c02cdd7dbfcad
SHA256

8d48900f6f473f0762bbc7256bc53c3fff5ea72d02aaab023b8d77400c357bf6
SHA512

ef1262f204f19797ae2970822ce1a8b4d0771738422e8cc3214ef31b24ff95eb175aba100350db4f7f678812a0aed865de27baf6c72acd49127b01ef8899a173
SSDEEP

768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkIT9:qDdFJy3QMOtEvwDpjjWMl7T9

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/2332-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2332-10-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000800000002324f-14.dat	CryptoLocker_rule2
behavioral2/memory/228-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/2332-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/2332-10-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000800000002324f-14.dat	CryptoLocker_set1
behavioral2/memory/228-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/2332-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/2332-10-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/files/0x000800000002324f-14.dat	UPX
behavioral2/memory/228-27-0x0000000000500000-0x0000000000510000-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	2024-07-01_229617050744b0e1f74ea38e0f449331_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
228	asih.exe

UPX packed file 4 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/2332-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/2332-10-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x000800000002324f-14.dat	upx
behavioral2/memory/228-27-0x0000000000500000-0x0000000000510000-memory.dmp	upx

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 2332 wrote to memory of 228	2332	2024-07-01_229617050744b0e1f74ea38e0f449331_cryptolocker.exe	92
PID 2332 wrote to memory of 228	2332	2024-07-01_229617050744b0e1f74ea38e0f449331_cryptolocker.exe	92
PID 2332 wrote to memory of 228	2332	2024-07-01_229617050744b0e1f74ea38e0f449331_cryptolocker.exe	92

C:\Users\Admin\AppData\Local\Temp\2024-07-01_229617050744b0e1f74ea38e0f449331_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-07-01_229617050744b0e1f74ea38e0f449331_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2332
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:228

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=3852 --field-trial-handle=3192,i,2785050981002401924,4037047756083432660,262144 --variations-seed-version /prefetch:8
1⤵
PID:2348

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
37KB

MD5
c230c4e8e3741ed7d6fe25fc151b5852

SHA1
06186239d6b31b6eccb346c9e902de1f1a2a17a5

SHA256
8a94790074ae332d32183a62f2f1dbc79c736700c89a21bd52337a09932cdd70

SHA512
cc50a07f7e5b7e17ac4d06e51cdacfde56b7f75d0761dab26f31bfdc659ca7f4c57d1f6d41c68a50a5ff52228ac634585f903fcbce7df0bd391a6ade15c66508

Download Submit
memory/228-19-0x0000000000620000-0x0000000000626000-memory.dmp

Filesize
24KB

Download
memory/228-20-0x0000000000750000-0x0000000000756000-memory.dmp

Filesize
24KB

Download
memory/228-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2332-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2332-1-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/2332-2-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/2332-3-0x0000000002060000-0x0000000002066000-memory.dmp

Filesize
24KB

Download
memory/2332-10-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download