d88e7ba95fe4380c3a4222c9e6b96027a386586c7ca6e4269c12167284ddbd9e

Analysis

max time kernel
134s
max time network
124s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
22-05-2024 02:26

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General

Target

2024-05-22_24a1dffe6c2a4df238e41fb4e6cdb5ed_cryptolocker.exe
Size

34KB
MD5

24a1dffe6c2a4df238e41fb4e6cdb5ed
SHA1

a7cbbc02d631423f2347a9247ba8b28c96fac8cb
SHA256

d88e7ba95fe4380c3a4222c9e6b96027a386586c7ca6e4269c12167284ddbd9e
SHA512

5a114687d9acdd5d67778cef6a7074e81c1b607fec3820a9683f96e1b50b57104fb8898bcff1d647f3c35554bac18723552a2424488d758a84e830723cc4778a
SSDEEP

768:bxNQIE0eBhkL2Fo1CCwgfjOg9Arbkzos5M4gX:bxNrC7kYo1Fxf2rYA3X

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\pissa.exe	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

Processes:

2024-05-22_24a1dffe6c2a4df238e41fb4e6cdb5ed_cryptolocker.exepissa.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1162180587-977231257-2194346871-1000\Control Panel\International\Geo\Nation	2024-05-22_24a1dffe6c2a4df238e41fb4e6cdb5ed_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1162180587-977231257-2194346871-1000\Control Panel\International\Geo\Nation	pissa.exe

Executes dropped EXE 1 IoCs

Processes:

pissa.exe

pid process

4360 pissa.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
4360	pissa.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-05-22_24a1dffe6c2a4df238e41fb4e6cdb5ed_cryptolocker.exe

description	pid	process	target process
PID 3804 wrote to memory of 4360	3804	2024-05-22_24a1dffe6c2a4df238e41fb4e6cdb5ed_cryptolocker.exe	pissa.exe
PID 3804 wrote to memory of 4360	3804	2024-05-22_24a1dffe6c2a4df238e41fb4e6cdb5ed_cryptolocker.exe	pissa.exe
PID 3804 wrote to memory of 4360	3804	2024-05-22_24a1dffe6c2a4df238e41fb4e6cdb5ed_cryptolocker.exe	pissa.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-22_24a1dffe6c2a4df238e41fb4e6cdb5ed_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-22_24a1dffe6c2a4df238e41fb4e6cdb5ed_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3804

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:4360

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\pissa.exe
Filesize
35KB

MD5
650e7255dfd71ccc16c6e8001833a00b

SHA1
13893417803fd74cc0a387ff7f024183e44e1aee

SHA256
bee6be98b07bdacb217d8f590a841891e738cda206346931d2b80443bcc2d0b4

SHA512
9a461b42bd9e16a3dcee8c801457de1d6aead2993347d0141289b5ec2825cb02a3aa7c2d6bce7ebd86c424698347639f5748e3300fb387fa6e11b3aadbbb8533

Download Submit
C:\Users\Admin\AppData\Local\Temp\pissec.exe
Filesize
261B

MD5
11bed1c06d8f4680de5154405be20365

SHA1
9c3095f1aa0b02924c23592d1e86673bb0081ca1

SHA256
bcc0582f122db6e61d2aa06628275f5b882c01ca037699427d0f68e48d744666

SHA512
050bb38ff33ab7e8e8aa647cffb26d2b0a54074340e79f0acf0db8f076c421505f1e4c1ce169d55aeacd4085ce258a78d24327c9393650642963beb130517da8

Download Submit
memory/3804-0-0x0000000002250000-0x0000000002256000-memory.dmp

Filesize
24KB

Download
memory/3804-7-0x0000000002250000-0x0000000002256000-memory.dmp

Filesize
24KB

Download
memory/3804-1-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download
memory/4360-17-0x0000000003010000-0x0000000003016000-memory.dmp

Filesize
24KB

Download
memory/4360-23-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download