8e769e8c8fdd8ee323d41223fb1b0a01a7b81d608931fbaa44f93713cac61745

Analysis

max time kernel
148s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
15/04/2024, 11:42

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General

Target

2024-04-15_6409de6ec0952f0445d63163e70d08b3_cryptolocker.exe
Size

50KB
MD5

6409de6ec0952f0445d63163e70d08b3
SHA1

424ef9eae4bb8d9a221d13d5c29f9bb1c3965ed7
SHA256

8e769e8c8fdd8ee323d41223fb1b0a01a7b81d608931fbaa44f93713cac61745
SHA512

372348a976a93e706d2999d9dfea70cc88617c73daf9bdc21ce229d3f741a873375714807145a7ff3637a6f80571190e2044279e6a8b5b5445fde7b3a071e6c5
SSDEEP

768:79inqyNR/QtOOtEvwDpjBK/rJ+Nw8qnTHGfg:79mqyNhQMOtEvwDpjBxe8GGfg

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 3 IoCs

resource	yara_rule
behavioral2/memory/2380-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x001c00000001e97e-13.dat	CryptoLocker_rule2
behavioral2/memory/2380-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral2/memory/2380-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x001c00000001e97e-13.dat	CryptoLocker_set1
behavioral2/memory/2380-17-0x0000000000500000-0x000000000050F000-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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-259785868-298165991-4178590326-1000\Control Panel\International\Geo\Nation	2024-04-15_6409de6ec0952f0445d63163e70d08b3_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3220	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 2380 wrote to memory of 3220	2380	2024-04-15_6409de6ec0952f0445d63163e70d08b3_cryptolocker.exe	84
PID 2380 wrote to memory of 3220	2380	2024-04-15_6409de6ec0952f0445d63163e70d08b3_cryptolocker.exe	84
PID 2380 wrote to memory of 3220	2380	2024-04-15_6409de6ec0952f0445d63163e70d08b3_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-04-15_6409de6ec0952f0445d63163e70d08b3_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-15_6409de6ec0952f0445d63163e70d08b3_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2380
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3220

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
50KB

MD5
ecd5b762d9b9ae541f0e126915372251

SHA1
8c0dcac656e50987521d346e80f0d51d7c83bd9d

SHA256
dede36263a67355081d6abe90a7947385bd81dbbb69904fcb6acf1a3c7b42582

SHA512
aabad6b4afca9fb0baf5d2b0a9c0a39c37a72b36721ee2d69fd6d512b9ed3719fe982ee26ecf19b29d1b095f1c9b86810bc14c1323c457c75faddbde829efb65

Download Submit
memory/2380-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2380-1-0x0000000002190000-0x0000000002196000-memory.dmp

Filesize
24KB

Download
memory/2380-2-0x0000000002190000-0x0000000002196000-memory.dmp

Filesize
24KB

Download
memory/2380-3-0x00000000021B0000-0x00000000021B6000-memory.dmp

Filesize
24KB

Download
memory/2380-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3220-19-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/3220-25-0x00000000004C0000-0x00000000004C6000-memory.dmp

Filesize
24KB

Download