116f73fc7e931d9a76c2c958ca5e7bc53e8ab6364cc8f8d278817fd4b3997d27

Analysis

max time kernel
147s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
22-04-2024 07:33

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General

Target

2024-04-22_256bf52a32cac6531230d4bb8f9e6891_cryptolocker.exe
Size

33KB
MD5

256bf52a32cac6531230d4bb8f9e6891
SHA1

6ca6592f15724865ecda035df9e9578b364cbd49
SHA256

116f73fc7e931d9a76c2c958ca5e7bc53e8ab6364cc8f8d278817fd4b3997d27
SHA512

6464ec9dd105bc244ac7f50eb63b2c99053153b194658d561f2f0819da89f9f2844d36c819daf5c51a4dd3ab575856faafac00e13de2c2bdaafa9261d8c3e0fe
SSDEEP

768:bxNQIE0eBhkL2Fo1CCwgfjOg9Arbkzos5Po:bxNrC7kYo1Fxf2rYs

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0009000000023401-12.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-1-5-21-4084619521-2220719027-1909462854-1000\Control Panel\International\Geo\Nation	2024-04-22_256bf52a32cac6531230d4bb8f9e6891_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-4084619521-2220719027-1909462854-1000\Control Panel\International\Geo\Nation	pissa.exe

Executes dropped EXE 1 IoCs

pid	Process
4132	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 2424 wrote to memory of 4132	2424	2024-04-22_256bf52a32cac6531230d4bb8f9e6891_cryptolocker.exe	86
PID 2424 wrote to memory of 4132	2424	2024-04-22_256bf52a32cac6531230d4bb8f9e6891_cryptolocker.exe	86
PID 2424 wrote to memory of 4132	2424	2024-04-22_256bf52a32cac6531230d4bb8f9e6891_cryptolocker.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-04-22_256bf52a32cac6531230d4bb8f9e6891_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-22_256bf52a32cac6531230d4bb8f9e6891_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2424
- 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:4132

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
33KB

MD5
ed56ab467704ac9304771422703a4185

SHA1
17101e926d0ef6ad5e4bd098780b65dee2a82674

SHA256
5f60bf56fcae9f1ecb4bdf35f833d2b06ec160bafa7c540f96f38c2be9893e9a

SHA512
3574565cc4bb92c31fb3a91047f437d899db87ae8b9ae888aefbc09713f84e5e4a6c9b496d57ae0e3bcfb29ca8f852d6ce7b4502ecddde42b8119776a3c33be3

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

Filesize
261B

MD5
11bed1c06d8f4680de5154405be20365

SHA1
9c3095f1aa0b02924c23592d1e86673bb0081ca1

SHA256
bcc0582f122db6e61d2aa06628275f5b882c01ca037699427d0f68e48d744666

SHA512
050bb38ff33ab7e8e8aa647cffb26d2b0a54074340e79f0acf0db8f076c421505f1e4c1ce169d55aeacd4085ce258a78d24327c9393650642963beb130517da8

Download Submit
memory/2424-0-0x0000000000730000-0x0000000000736000-memory.dmp

Filesize
24KB

Download
memory/2424-1-0x0000000000730000-0x0000000000736000-memory.dmp

Filesize
24KB

Download
memory/2424-2-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download
memory/4132-17-0x0000000003010000-0x0000000003016000-memory.dmp

Filesize
24KB

Download
memory/4132-18-0x0000000002120000-0x0000000002126000-memory.dmp

Filesize
24KB

Download