bde140002420b5ee34e522ade10b4714321242d5734bc335e2ff43fb7c41c059

Analysis

max time kernel
150s
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, 05:44

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General

Target

2024-04-21_80358f471a357b16ee56ad806b0ec390_cryptolocker.exe
Size

30KB
MD5

80358f471a357b16ee56ad806b0ec390
SHA1

d5425261997e06c3f7fcdc57f56040992ba60191
SHA256

bde140002420b5ee34e522ade10b4714321242d5734bc335e2ff43fb7c41c059
SHA512

ee4b6d791e02202b8aeb0018ca6be5e3d0f37f0b044724863749eef590c2d5101ed7ccfe5b0fbc12126cefb416b9dfc06fb1d5df100e17258d0f4f105a9c1808
SSDEEP

384:bG74uGLLQRcsdeQ72ngEr4K7YmE8j60nrlwfjDUGTGS6:bG74zYcgT/Ekd0ryfj4

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/4568-0-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x001c00000001e97e-13.dat	CryptoLocker_rule2
behavioral2/memory/924-18-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4568-17-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/924-27-0x0000000008000000-0x000000000800A000-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-1-5-21-259785868-298165991-4178590326-1000\Control Panel\International\Geo\Nation	2024-04-21_80358f471a357b16ee56ad806b0ec390_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
924	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 924	4568	2024-04-21_80358f471a357b16ee56ad806b0ec390_cryptolocker.exe	86
PID 4568 wrote to memory of 924	4568	2024-04-21_80358f471a357b16ee56ad806b0ec390_cryptolocker.exe	86
PID 4568 wrote to memory of 924	4568	2024-04-21_80358f471a357b16ee56ad806b0ec390_cryptolocker.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-04-21_80358f471a357b16ee56ad806b0ec390_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-21_80358f471a357b16ee56ad806b0ec390_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:924

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
31KB

MD5
9fa1b43064eea4b245f94bf2d2e6f139

SHA1
ad654263de7cb1be139fef9cab25439865be0374

SHA256
1e922cd697ac88e6afd40e0ecc958c9caa3bf2f7b8b3bf46bde3a3fd1711bf0c

SHA512
6d720c873fb2ff2946af9ebd248c90511c7351d389d1b2806058083a027920fe456768177fe197f1d30e2e0f9093886c05d376c5e6455e0079c4f3785bc50d2a

Download Submit
memory/924-18-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/924-20-0x00000000022B0000-0x00000000022B6000-memory.dmp

Filesize
24KB

Download
memory/924-22-0x0000000002200000-0x0000000002206000-memory.dmp

Filesize
24KB

Download
memory/924-27-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/4568-0-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/4568-1-0x00000000021C0000-0x00000000021C6000-memory.dmp

Filesize
24KB

Download
memory/4568-2-0x00000000021C0000-0x00000000021C6000-memory.dmp

Filesize
24KB

Download
memory/4568-3-0x0000000003140000-0x0000000003146000-memory.dmp

Filesize
24KB

Download
memory/4568-17-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download