da73f10919192c094a0e2d60c294bcdefa72f0cd23412e22e5bc3fd3495a4006

Analysis

max time kernel
139s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
18/02/2024, 23:00

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General

Target

2024-02-18_9eb6c3e2e97f5ac9abee10319bf8a2b8_cryptolocker.exe
Size

50KB
MD5

9eb6c3e2e97f5ac9abee10319bf8a2b8
SHA1

5d5ca11bee5e7915b796f3915a355327050fb5c0
SHA256

da73f10919192c094a0e2d60c294bcdefa72f0cd23412e22e5bc3fd3495a4006
SHA512

4ce7238c7b340f72a17da6bb6e14c1ea838a39dfef23f611b9538ef3965ef54d8da5ac134dc1ffc3ccef7df510bbb426ce484070eeaf98d66c56dc30a8a224a4
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/BtOOtEvwDpjBVaD3E09vbEd6:X6QFElP6n+gJBMOtEvwDpjBtE5

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023118-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023118-12.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-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation	2024-02-18_9eb6c3e2e97f5ac9abee10319bf8a2b8_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1856	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 4612 wrote to memory of 1856	4612	2024-02-18_9eb6c3e2e97f5ac9abee10319bf8a2b8_cryptolocker.exe	84
PID 4612 wrote to memory of 1856	4612	2024-02-18_9eb6c3e2e97f5ac9abee10319bf8a2b8_cryptolocker.exe	84
PID 4612 wrote to memory of 1856	4612	2024-02-18_9eb6c3e2e97f5ac9abee10319bf8a2b8_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-02-18_9eb6c3e2e97f5ac9abee10319bf8a2b8_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-18_9eb6c3e2e97f5ac9abee10319bf8a2b8_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4612
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1856

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
50KB

MD5
8eb189a1855ea38b487e7d35b7eb893d

SHA1
cf52ef30f1ab1594577990a419a260085bcacebe

SHA256
513b726d128f5525412dafafe7b8181b20548fca2476af5ac15ce655c0f6a67a

SHA512
3956f42c2bd1e94b76190b751673db5dbf6e098ab268aff3abcc26c36a5caf4d52f95cb2aeb559529df46fe8f6c532e6f9eab084a4fa311f1eb5730139c6c25c

Download Submit
memory/1856-17-0x00000000021C0000-0x00000000021C6000-memory.dmp

Filesize
24KB

Download
memory/1856-18-0x0000000002060000-0x0000000002066000-memory.dmp

Filesize
24KB

Download
memory/4612-0-0x0000000002280000-0x0000000002286000-memory.dmp

Filesize
24KB

Download
memory/4612-1-0x0000000002280000-0x0000000002286000-memory.dmp

Filesize
24KB

Download
memory/4612-2-0x0000000002190000-0x0000000002196000-memory.dmp

Filesize
24KB

Download