8f97f2577a154925df8ea97ec44e35d8bbd6de3bdeabc4bd5aa93b2f26a87618

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
15-03-2024 17:42

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General

Target

2024-03-15_a053a5e46927a2047a9fb4c18d6cb97d_cryptolocker.exe
Size

29KB
MD5

a053a5e46927a2047a9fb4c18d6cb97d
SHA1

e8d1481f8cc64bdb85a3ab65c2ab543b67a97e6d
SHA256

8f97f2577a154925df8ea97ec44e35d8bbd6de3bdeabc4bd5aa93b2f26a87618
SHA512

1397a2f14618f5d541e7f075ecbd3e8134b0ef01d2d86305e34d1cedd8a8511a4dc98e0bc09c1f495883c1cc61a15fe5b0211433ed939aa50edc8647e68387e2
SSDEEP

384:bA74uGLLQRcsdeQ72ngEr4K7YmE8j60nrlwfjDUr766SJlkUA0:bA74zYcgT/Ekd0ryfjQRS4Ub

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000001e59e-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-1-5-21-399997616-3400990511-967324271-1000\Control Panel\International\Geo\Nation	2024-03-15_a053a5e46927a2047a9fb4c18d6cb97d_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
5036	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 4568 wrote to memory of 5036	4568	2024-03-15_a053a5e46927a2047a9fb4c18d6cb97d_cryptolocker.exe	89
PID 4568 wrote to memory of 5036	4568	2024-03-15_a053a5e46927a2047a9fb4c18d6cb97d_cryptolocker.exe	89
PID 4568 wrote to memory of 5036	4568	2024-03-15_a053a5e46927a2047a9fb4c18d6cb97d_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-03-15_a053a5e46927a2047a9fb4c18d6cb97d_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-15_a053a5e46927a2047a9fb4c18d6cb97d_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4568
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:5036

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
29KB

MD5
060256efa80ea279156b4e34c25db4d5

SHA1
69c67b93dc47471e36d9d9de090f8ba13ce3df28

SHA256
f9dd6f2f19a203d658988b48557799b4e8f2f98f8f254ac73a1438729b6e073d

SHA512
eb82d343847997559f6df272ad82a45658dc5adea905873952467b2c9cdeae1e182088b0d541d5a842d67875a60791707cc0e1f5706ddd209e3e919d29511947

Download Submit
memory/4568-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/4568-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/4568-2-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download
memory/5036-17-0x0000000002ED0000-0x0000000002ED6000-memory.dmp

Filesize
24KB

Download
memory/5036-19-0x00000000020A0000-0x00000000020A6000-memory.dmp

Filesize
24KB

Download