dc44140a6534e0bbfe6d5076674bdc8b4d2702fd685743570a1fb23d9c10b42a

Analysis

max time kernel
147s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
05/04/2024, 15:29

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General

Target

2024-04-05_25208668db8d0a2d5e95f2ab0e305c55_cryptolocker.exe
Size

32KB
MD5

25208668db8d0a2d5e95f2ab0e305c55
SHA1

45f7c755bba1d9abf916d541fbee12d575eba6f0
SHA256

dc44140a6534e0bbfe6d5076674bdc8b4d2702fd685743570a1fb23d9c10b42a
SHA512

8e9a4396a79cf66d1e08e097632267b89697bf9b05b755f862781842dd2212cfa42ea1b0668bf4245a6afe39c627ba9a3c18ce6384025570b493325f2026dbf8
SSDEEP

768:bxNQIE0eBhkL2Fo1CCwgfjOg9Arbkzos5HO:bxNrC7kYo1Fxf2rYa

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00080000000231fa-12.dat	CryptoLocker_rule2

Checks computer location settings 2 TTPs 2 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-1-5-21-3045580317-3728985860-206385570-1000\Control Panel\International\Geo\Nation	2024-04-05_25208668db8d0a2d5e95f2ab0e305c55_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\Control Panel\International\Geo\Nation	pissa.exe

Executes dropped EXE 1 IoCs

pid	Process
1920	pissa.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 5036 wrote to memory of 1920	5036	2024-04-05_25208668db8d0a2d5e95f2ab0e305c55_cryptolocker.exe	87
PID 5036 wrote to memory of 1920	5036	2024-04-05_25208668db8d0a2d5e95f2ab0e305c55_cryptolocker.exe	87
PID 5036 wrote to memory of 1920	5036	2024-04-05_25208668db8d0a2d5e95f2ab0e305c55_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-04-05_25208668db8d0a2d5e95f2ab0e305c55_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-05_25208668db8d0a2d5e95f2ab0e305c55_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:5036
- C:\Users\Admin\AppData\Local\Temp\pissa.exe
  "C:\Users\Admin\AppData\Local\Temp\pissa.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  PID:1920

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\pissa.exe

Filesize
32KB

MD5
6c9b69f75cdc245542b12b853e36b21d

SHA1
b4abb342ea7200ace8cbbf535b443876efa7acc9

SHA256
12d6622f95fa2e9484c88c04f0f06ccaa83ee7af69a9a378e18a52525faa09bb

SHA512
efcea6243ca33d0c0a6c337862ba0478e6358d6a0f3bc849b55dfaadcccd768c02c46d9d4ee7c12814b4bfda5a639ff7e93bde36589580b4c587ddc2a8ff3316

Download Submit
C:\Users\Admin\AppData\Local\Temp\pissec.exe

Filesize
261B

MD5
11bed1c06d8f4680de5154405be20365

SHA1
9c3095f1aa0b02924c23592d1e86673bb0081ca1

SHA256
bcc0582f122db6e61d2aa06628275f5b882c01ca037699427d0f68e48d744666

SHA512
050bb38ff33ab7e8e8aa647cffb26d2b0a54074340e79f0acf0db8f076c421505f1e4c1ce169d55aeacd4085ce258a78d24327c9393650642963beb130517da8

Download Submit
memory/1920-17-0x0000000002ED0000-0x0000000002ED6000-memory.dmp

Filesize
24KB

Download
memory/1920-18-0x00000000020A0000-0x00000000020A6000-memory.dmp

Filesize
24KB

Download
memory/5036-0-0x0000000002180000-0x0000000002186000-memory.dmp

Filesize
24KB

Download
memory/5036-1-0x0000000002180000-0x0000000002186000-memory.dmp

Filesize
24KB

Download
memory/5036-2-0x0000000003010000-0x0000000003016000-memory.dmp

Filesize
24KB

Download