0668827bf73ca26678ab86c1b5d5cac0fa65bafb5e9debdee07c4ca1130124e8

Analysis

max time kernel
150s
max time network
158s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
04/04/2024, 19:52

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General

Target

2024-04-04_6fe93413814c0890223774c1e0dd07fc_cryptolocker.exe
Size

47KB
MD5

6fe93413814c0890223774c1e0dd07fc
SHA1

31ad86e19dcd2084e672829667d5a6016d128bd7
SHA256

0668827bf73ca26678ab86c1b5d5cac0fa65bafb5e9debdee07c4ca1130124e8
SHA512

6a58783c9b38852f42c99ef3e7867e57fecbe2618303429b1e8a1b761ee89a12a100526b963a44252b5430e7beeef68651be18c4e45fecbbe942cc11d30aaabb
SSDEEP

768:bgX4zYcgTEu6QOaryfjqDlC6JFbK37YbDu5z/hQcX/:bgGYcA/53GAA6y37nbL

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023231-12.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-1-5-21-557049126-2506969350-2798870634-1000\Control Panel\International\Geo\Nation	2024-04-04_6fe93413814c0890223774c1e0dd07fc_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1376	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 3784 wrote to memory of 1376	3784	2024-04-04_6fe93413814c0890223774c1e0dd07fc_cryptolocker.exe	88
PID 3784 wrote to memory of 1376	3784	2024-04-04_6fe93413814c0890223774c1e0dd07fc_cryptolocker.exe	88
PID 3784 wrote to memory of 1376	3784	2024-04-04_6fe93413814c0890223774c1e0dd07fc_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-04-04_6fe93413814c0890223774c1e0dd07fc_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-04_6fe93413814c0890223774c1e0dd07fc_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3784
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:1376

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
47KB

MD5
75f40438e855bfd0618bc362df303c8e

SHA1
e531b59413e35c87dd216fc838ee0d8a50223be4

SHA256
9d248d9671d621dc5cf2a252848fb0c7e415c02824212e8989d7d4ff80a2af08

SHA512
4b48ddd9a0064b8544d4199feffbc717ad3239ed2710988abfec9a0e5c0b28b0ae5bd1c22cfd93e27e17795b50b3779ec8ab0d3ab954834c35dd73154d3c85b2

Download Submit
memory/1376-17-0x0000000002280000-0x0000000002286000-memory.dmp

Filesize
24KB

Download
memory/1376-20-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download
memory/3784-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/3784-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/3784-2-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download