d9c497358e930776f160310d3536e01958c66ed39dca73e6e9730b2e7881b8dd

Analysis

max time kernel
150s
max time network
158s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
04/02/2024, 05:47

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General

Target

2024-02-04_af4f24a2df408b33620356d555fdf112_cryptolocker.exe
Size

74KB
MD5

af4f24a2df408b33620356d555fdf112
SHA1

d350d4f245790c0933b56de53b16dc14433c7c19
SHA256

d9c497358e930776f160310d3536e01958c66ed39dca73e6e9730b2e7881b8dd
SHA512

4caa8fc1e582a24a68ec07b4959dbf2b60640deae4f0c812bad88913eff3668f7b4e8ff30914070873ce6c21a87d730ccbf7d7fd9050caa1379b3de0027afa19
SSDEEP

1536:X6QFElP6n+gJQMOtEvwDpjBZYTjipvF2bx1c5:X6a+SOtEvwDpjBZYvQd2G

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000600000002321d-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000600000002321d-12.dat	CryptoLocker_set1

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-1-5-21-1815711207-1844170477-3539718864-1000\Control Panel\International\Geo\Nation	2024-02-04_af4f24a2df408b33620356d555fdf112_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2584	asih.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 3440 wrote to memory of 2584	3440	2024-02-04_af4f24a2df408b33620356d555fdf112_cryptolocker.exe	84
PID 3440 wrote to memory of 2584	3440	2024-02-04_af4f24a2df408b33620356d555fdf112_cryptolocker.exe	84
PID 3440 wrote to memory of 2584	3440	2024-02-04_af4f24a2df408b33620356d555fdf112_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-02-04_af4f24a2df408b33620356d555fdf112_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-04_af4f24a2df408b33620356d555fdf112_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3440
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2584

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\asih.exe

Filesize
74KB

MD5
be92a196463030bed2b53dd970c10072

SHA1
e88d9c9c07864582ccdb21488963ca645165e8b3

SHA256
7adb006552f3cef8ffb19c2a7ec3cd343654d33093131cfc8c6cfd4dec62c0c8

SHA512
d0e3cc71baa7c1785f0d7350b3f1c30036bdb3e64e4c297f0518eb4c3bee2018b74b9d73ec2b17240458f9e9d8f2f632ea840ede74ccab5920a13853b26073f3

Download Submit
memory/2584-18-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/2584-17-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/3440-1-0x00000000007F0000-0x00000000007F6000-memory.dmp

Filesize
24KB

Download
memory/3440-0-0x00000000007F0000-0x00000000007F6000-memory.dmp

Filesize
24KB

Download
memory/3440-2-0x0000000002240000-0x0000000002246000-memory.dmp

Filesize
24KB

Download