2792165d4775f9fc083aba6750479eadefce959156566072a07cac0a4fdef283

Analysis

max time kernel
150s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
08/06/2024, 16:53

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General

Target

2024-06-08_26f2756e7dec93751911b2523fc1ed13_cryptolocker.exe
Size

44KB
MD5

26f2756e7dec93751911b2523fc1ed13
SHA1

76ed2e05bbf1e3864cce1714e1e744188b26e3b1
SHA256

2792165d4775f9fc083aba6750479eadefce959156566072a07cac0a4fdef283
SHA512

e5731e15032e6c95e2ed7699a1d92075649e541e19e94b835becd438c9f81644b717854f7ac3940391b8d34704b16acab3f2641f106f3164dfc60b159d072eb8
SSDEEP

768:bCDOw9UiaKHfjnD0S16avdrQFiLjJvtAyda:bCDOw9aMDooc+vAyM

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/3332-0-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0007000000023278-13.dat	CryptoLocker_rule2
behavioral2/memory/3332-17-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1088-26-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2

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-1-5-21-3558294865-3673844354-2255444939-1000\Control Panel\International\Geo\Nation	2024-06-08_26f2756e7dec93751911b2523fc1ed13_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1088	lossy.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 3332 wrote to memory of 1088	3332	2024-06-08_26f2756e7dec93751911b2523fc1ed13_cryptolocker.exe	82
PID 3332 wrote to memory of 1088	3332	2024-06-08_26f2756e7dec93751911b2523fc1ed13_cryptolocker.exe	82
PID 3332 wrote to memory of 1088	3332	2024-06-08_26f2756e7dec93751911b2523fc1ed13_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-06-08_26f2756e7dec93751911b2523fc1ed13_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-08_26f2756e7dec93751911b2523fc1ed13_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3332
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  PID:1088

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\lossy.exe

Filesize
44KB

MD5
ceb40339942f25228bcb132dd286e2e4

SHA1
284cd23d70b2e621d3a0ae37c1d739e7077cfe0f

SHA256
5175b1b9b09909cd66f4e0f616a85cd2dbe7be5617f5ba9ebd4992864e83f6a9

SHA512
1814ddc6020aa4d36b1326b14e624d2a734fc18430b105337163663f514bf1034e950537dd915525600c3cac3a58e71719ad1ed55a7590c97018250b85820e19

Download Submit
memory/1088-19-0x00000000020C0000-0x00000000020C6000-memory.dmp

Filesize
24KB

Download
memory/1088-20-0x00000000020E0000-0x00000000020E6000-memory.dmp

Filesize
24KB

Download
memory/1088-26-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/3332-0-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/3332-1-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/3332-2-0x00000000005C0000-0x00000000005C6000-memory.dmp

Filesize
24KB

Download
memory/3332-9-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/3332-17-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download