2acefa194f4b945ba52722c88c1aa8911baaf3750cf03c9dc458bbd42d4592db

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
11-05-2024 21:31

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General

Target

2024-05-11_d67c1e596fcbf78c4803cbec191f8b90_cryptolocker.exe
Size

32KB
MD5

d67c1e596fcbf78c4803cbec191f8b90
SHA1

433bcb8e1ed3006a0aab7177e0d1efa10c1edb0f
SHA256

2acefa194f4b945ba52722c88c1aa8911baaf3750cf03c9dc458bbd42d4592db
SHA512

eb66352e2f6b274685e7b011b32194c0c7a0c94b979f2c03045c1d31da418c122b3159c235c9f542ef88964ca1efae9aceac23d6cee6bb1dc60e3cd906fc6bb5
SSDEEP

384:bG74uGLLQRcsdeQ72ngEr4K7YmE8j60nrlwfjDUGTGOKvL:bG74zYcgT/Ekd0ryfjUvL

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/1012-0-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000600000002326f-13.dat	CryptoLocker_rule2
behavioral2/memory/536-17-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1012-18-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/536-27-0x0000000008000000-0x000000000800A000-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-1-5-21-2539840389-1261165778-1087677076-1000\Control Panel\International\Geo\Nation	2024-05-11_d67c1e596fcbf78c4803cbec191f8b90_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
536	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 1012 wrote to memory of 536	1012	2024-05-11_d67c1e596fcbf78c4803cbec191f8b90_cryptolocker.exe	83
PID 1012 wrote to memory of 536	1012	2024-05-11_d67c1e596fcbf78c4803cbec191f8b90_cryptolocker.exe	83
PID 1012 wrote to memory of 536	1012	2024-05-11_d67c1e596fcbf78c4803cbec191f8b90_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-05-11_d67c1e596fcbf78c4803cbec191f8b90_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-11_d67c1e596fcbf78c4803cbec191f8b90_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1012
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:536

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
32KB

MD5
00a50ee530fe2e309c323fd76a6bce0d

SHA1
3a8a05e6204c742913b70b28265a970bcbbb66e5

SHA256
6a12e7beb83baa46811535f432049fc786b6db5ade737cfabd45a02ae85a8ad6

SHA512
6465fcd7c48db3c7f091d55c1faf7af48f8944129d9e44b06143fccd1e9d57339ebdce53f01bf3d1a330a807ae4299a034f7ab406a0b4f86aedc31b6b317caf2

Download Submit
memory/536-17-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/536-20-0x0000000002180000-0x0000000002186000-memory.dmp

Filesize
24KB

Download
memory/536-26-0x0000000002110000-0x0000000002116000-memory.dmp

Filesize
24KB

Download
memory/536-27-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/1012-0-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/1012-1-0x0000000002160000-0x0000000002166000-memory.dmp

Filesize
24KB

Download
memory/1012-2-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/1012-9-0x0000000002160000-0x0000000002166000-memory.dmp

Filesize
24KB

Download
memory/1012-18-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download