e1a9d6c60b6a186a637135605a0b9bec0f5a3499b2e88e9ac1a597118c373de2

Analysis

max time kernel
148s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
15/05/2024, 01:41

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General

Target

2024-05-15_ccdaa689cdd29ec34b7b506afca7a100_cryptolocker.exe
Size

44KB
MD5

ccdaa689cdd29ec34b7b506afca7a100
SHA1

b58ba1f071a99e260b69b965b394229718f31b32
SHA256

e1a9d6c60b6a186a637135605a0b9bec0f5a3499b2e88e9ac1a597118c373de2
SHA512

bae6db05476747cc2b55a671e7dec1041dcc945463e358acb640d310502554a6c06278a1185aa82a62fadd2de082a81f2715650cd2a397c4e888e9f46e1eab40
SSDEEP

384:bm74uGLLQRcsdeQ72ngEr4K7YmE8jo0nrlwfjDUpaSwB:bm74zYcgT/Ekn0ryfjR1B

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/1936-0-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000800000002348f-13.dat	CryptoLocker_rule2
behavioral2/memory/1732-17-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1936-18-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1732-27-0x0000000008000000-0x000000000800D000-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-1-5-21-3571316656-3665257725-2415531812-1000\Control Panel\International\Geo\Nation	2024-05-15_ccdaa689cdd29ec34b7b506afca7a100_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1732	hasfj.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 1936 wrote to memory of 1732	1936	2024-05-15_ccdaa689cdd29ec34b7b506afca7a100_cryptolocker.exe	82
PID 1936 wrote to memory of 1732	1936	2024-05-15_ccdaa689cdd29ec34b7b506afca7a100_cryptolocker.exe	82
PID 1936 wrote to memory of 1732	1936	2024-05-15_ccdaa689cdd29ec34b7b506afca7a100_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-05-15_ccdaa689cdd29ec34b7b506afca7a100_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-15_ccdaa689cdd29ec34b7b506afca7a100_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1936
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:1732

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\hasfj.exe

Filesize
44KB

MD5
905658e3c311f133f9290a2797f4b81b

SHA1
bf8e12b3e75fbbc86d217ced922210f436ca9f48

SHA256
4d61e9f2bef67db89b800bd349e85503d81a2e2b222619e7957a4e350f1e16d6

SHA512
01a300fb61a5b940da5e9f300ddbb70795480fd4b6337a7964e9a403b836704d4f22279ff5af705380d609dfd6b42d7473f284e7345f51ad91596fc0950d770e

Download Submit
memory/1732-17-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/1732-26-0x0000000002D60000-0x0000000002D66000-memory.dmp

Filesize
24KB

Download
memory/1732-20-0x0000000003010000-0x0000000003016000-memory.dmp

Filesize
24KB

Download
memory/1732-27-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/1936-0-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/1936-1-0x0000000002160000-0x0000000002166000-memory.dmp

Filesize
24KB

Download
memory/1936-9-0x0000000002160000-0x0000000002166000-memory.dmp

Filesize
24KB

Download
memory/1936-2-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download
memory/1936-18-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download