53a7a90847e1cb294d0ae044581c675b131e2e7500d7dcc0117c51a45e81ff06

Analysis

max time kernel
145s
max time network
157s
platform
windows10-2004_x64
resource
win10v2004-20240221-en
resource tags

arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
submitted
24/02/2024, 20:26

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General

Target

2024-02-24_4c24d7f10ee9513ba1c1bb831e1ace60_cryptolocker.exe
Size

45KB
MD5

4c24d7f10ee9513ba1c1bb831e1ace60
SHA1

50d39f8c529894f83c4349acefb2ceb73831be3a
SHA256

53a7a90847e1cb294d0ae044581c675b131e2e7500d7dcc0117c51a45e81ff06
SHA512

fddb007364d918d32a40e6346e11273a9144ade22d98686dcb399adbd24aaf8da97fe8de819d2200add3dbda1fc9f2a11cdcb63a4d874eddb02f2af5f6a6ccf4
SSDEEP

768:wHGGaSawqnwjRQ6ESlmFOsPoOdQtOOtEvwDpjm6j4AYsqSh+DETkedm+My1j5H:YGzl5wjRQBBOsP1QMOtEvwDpjl39+D+L

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 3 IoCs

resource	yara_rule
behavioral2/memory/2540-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x00070000000230ff-13.dat	CryptoLocker_rule2
behavioral2/memory/2540-18-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral2/memory/2540-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x00070000000230ff-13.dat	CryptoLocker_set1
behavioral2/memory/2540-18-0x0000000000500000-0x000000000050B000-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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3844919115-497234255-166257750-1000\Control Panel\International\Geo\Nation	2024-02-24_4c24d7f10ee9513ba1c1bb831e1ace60_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4324	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 2540 wrote to memory of 4324	2540	2024-02-24_4c24d7f10ee9513ba1c1bb831e1ace60_cryptolocker.exe	85
PID 2540 wrote to memory of 4324	2540	2024-02-24_4c24d7f10ee9513ba1c1bb831e1ace60_cryptolocker.exe	85
PID 2540 wrote to memory of 4324	2540	2024-02-24_4c24d7f10ee9513ba1c1bb831e1ace60_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-02-24_4c24d7f10ee9513ba1c1bb831e1ace60_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-24_4c24d7f10ee9513ba1c1bb831e1ace60_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2540
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4324

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
46KB

MD5
c2600f89ef2318b1867f5683c5375ba6

SHA1
8c943c2852dfc6e5a46e105fc33b801cb1cc0f9f

SHA256
6aff97a5531211502e46b4b8d04bfdda393c93bcfe35dd5c33846aa952fac3eb

SHA512
b2780a6312bf54cf90efca9683d63c01951bd72677071d88322f8c5fc1a42f2baba6b20b3f301f75d1cf73f34097b3569bb418963bb35bb0a45f010ac62b136c

Download Submit
memory/2540-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2540-1-0x0000000000880000-0x0000000000886000-memory.dmp

Filesize
24KB

Download
memory/2540-2-0x0000000000880000-0x0000000000886000-memory.dmp

Filesize
24KB

Download
memory/2540-3-0x0000000002240000-0x0000000002246000-memory.dmp

Filesize
24KB

Download
memory/2540-18-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/4324-20-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/4324-19-0x00000000006D0000-0x00000000006D6000-memory.dmp

Filesize
24KB

Download