1094890b2a5b8622cb91334bb97fc0107082a9ce9326d3776b0c3a6950e45485

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
21-04-2024 19:46

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General

Target

2024-04-21_1a27b4a1cb4d20738aefbfbd0e604346_cryptolocker.exe
Size

52KB
MD5

1a27b4a1cb4d20738aefbfbd0e604346
SHA1

6e15c91503d9e1352916eb6282c0aa4c6a7caaa7
SHA256

1094890b2a5b8622cb91334bb97fc0107082a9ce9326d3776b0c3a6950e45485
SHA512

9ad4d823708c729cb8b6b002053e6c16b023ccba745a7e1e890855a11be82987e6c8764f084f328ecc1d6399ffdff5a35b659631067b1fd324229f5f88206192
SSDEEP

768:bgX4zYcgTEu6QOaryfjqDlC6JFbK37Yl6dIKld5CS4Gjn:bgGYcA/53GAA6y37Q6dI+d5QGz

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000300000001e97c-12.dat	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-1-5-21-355664440-2199602304-1223909400-1000\Control Panel\International\Geo\Nation	2024-04-21_1a27b4a1cb4d20738aefbfbd0e604346_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3900	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 2644 wrote to memory of 3900	2644	2024-04-21_1a27b4a1cb4d20738aefbfbd0e604346_cryptolocker.exe	87
PID 2644 wrote to memory of 3900	2644	2024-04-21_1a27b4a1cb4d20738aefbfbd0e604346_cryptolocker.exe	87
PID 2644 wrote to memory of 3900	2644	2024-04-21_1a27b4a1cb4d20738aefbfbd0e604346_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-04-21_1a27b4a1cb4d20738aefbfbd0e604346_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-21_1a27b4a1cb4d20738aefbfbd0e604346_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2644
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:3900

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
52KB

MD5
bfb5f8911b4426d26899a77e69904be3

SHA1
9a91638afadc5d7010ba417cd08021a7c156735d

SHA256
9c06606012219c3401e27c324667c6c2c0906886a939ac9751ebdd48630bf298

SHA512
c4812bff0d89333be132c09c50734eb82c6e7b2268a226312bf1a885280f3538f5fb7954b0b1d94ff33d28a29b26987d7c23cd907fc994c1460a0e182a30a595

Download Submit
memory/2644-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/2644-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/2644-2-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download
memory/3900-17-0x0000000003010000-0x0000000003016000-memory.dmp

Filesize
24KB

Download
memory/3900-22-0x0000000002120000-0x0000000002126000-memory.dmp

Filesize
24KB

Download