00881244eb57ff7f2f80b7b7b18805873f972532d352d291155297b0ec389473

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
03-06-2024 06:25

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General

Target

2024-06-03_20bc54965e33a62a5a428e9487b29c95_cryptolocker.exe
Size

35KB
MD5

20bc54965e33a62a5a428e9487b29c95
SHA1

facc30b10cf94998c8dde4e735c19dc6902a1fa5
SHA256

00881244eb57ff7f2f80b7b7b18805873f972532d352d291155297b0ec389473
SHA512

b98dc49071b8b88c56b62b69b3e803cb36e6bb511ceb3800a1bdd0fae61880668c1e5ca083f708667e01e91dc3a322b94d8eb9debe33f799163ecc9fc09e92fe
SSDEEP

768:bxNQIE0eBhkL2Fo1CCwgfjOg9Arbkzos5YT:bxNrC7kYo1Fxf2rYo

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00080000000233ec-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-1-5-21-2539840389-1261165778-1087677076-1000\Control Panel\International\Geo\Nation	2024-06-03_20bc54965e33a62a5a428e9487b29c95_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2539840389-1261165778-1087677076-1000\Control Panel\International\Geo\Nation	pissa.exe

Executes dropped EXE 1 IoCs

pid	Process
3348	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 2420 wrote to memory of 3348	2420	2024-06-03_20bc54965e33a62a5a428e9487b29c95_cryptolocker.exe	82
PID 2420 wrote to memory of 3348	2420	2024-06-03_20bc54965e33a62a5a428e9487b29c95_cryptolocker.exe	82
PID 2420 wrote to memory of 3348	2420	2024-06-03_20bc54965e33a62a5a428e9487b29c95_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-06-03_20bc54965e33a62a5a428e9487b29c95_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-03_20bc54965e33a62a5a428e9487b29c95_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2420
- 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:3348

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
35KB

MD5
1b148995998eab42c46e3a017c882e20

SHA1
a54dbc7ead891f7d64ba1a770fe322dcefe8433f

SHA256
d49a6de05fa9d605ef0d923e22418c617de302e23b62c3018678fecbd8f11ddb

SHA512
a896365124b07e27f0da6f5bdfc81c177eaae8eb44833ac9620dbea21f621d04074b08af888db19057b307b50067b8a2cb152b6a394e390e9a7cd8d4a8ec6f8f

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

Filesize
261B

MD5
11bed1c06d8f4680de5154405be20365

SHA1
9c3095f1aa0b02924c23592d1e86673bb0081ca1

SHA256
bcc0582f122db6e61d2aa06628275f5b882c01ca037699427d0f68e48d744666

SHA512
050bb38ff33ab7e8e8aa647cffb26d2b0a54074340e79f0acf0db8f076c421505f1e4c1ce169d55aeacd4085ce258a78d24327c9393650642963beb130517da8

Download Submit
memory/2420-0-0x0000000002120000-0x0000000002126000-memory.dmp

Filesize
24KB

Download
memory/2420-1-0x0000000003010000-0x0000000003016000-memory.dmp

Filesize
24KB

Download
memory/2420-8-0x0000000002120000-0x0000000002126000-memory.dmp

Filesize
24KB

Download
memory/3348-17-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download
memory/3348-23-0x00000000020A0000-0x00000000020A6000-memory.dmp

Filesize
24KB

Download