2c1d60024c85cf33e6b8938c5f90f5adadc216d8683a8194637a146ab295134f

Analysis

max time kernel
137s
max time network
146s
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 14:24

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General

Target

2024-02-18_15ddb3554537fe25d6df043f2731f24c_cryptolocker.exe
Size

43KB
MD5

15ddb3554537fe25d6df043f2731f24c
SHA1

f481757f36be76b829668fef7d6c320845404c44
SHA256

2c1d60024c85cf33e6b8938c5f90f5adadc216d8683a8194637a146ab295134f
SHA512

8d20cd495b12d19c16159b15682cfa8f253c8320cf3929c68f7be107c5ea8f97ec300a9fbfaa9a6ae499ff73f2d13ca124168bd211bc2871af1338e24657be6f
SSDEEP

768:bxNQIE0eBhkL2Fo1CCwgfjOg1tsJ6zeen754XcwxbFp1Yvb9w/:bxNrC7kYo1Fxf3s05rwxbF7Yvbo

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0010000000023153-12.dat	CryptoLocker_rule2

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-1-5-21-1497073144-2389943819-3385106915-1000\Control Panel\International\Geo\Nation	2024-02-18_15ddb3554537fe25d6df043f2731f24c_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4972	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 3724 wrote to memory of 4972	3724	2024-02-18_15ddb3554537fe25d6df043f2731f24c_cryptolocker.exe	85
PID 3724 wrote to memory of 4972	3724	2024-02-18_15ddb3554537fe25d6df043f2731f24c_cryptolocker.exe	85
PID 3724 wrote to memory of 4972	3724	2024-02-18_15ddb3554537fe25d6df043f2731f24c_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-02-18_15ddb3554537fe25d6df043f2731f24c_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-18_15ddb3554537fe25d6df043f2731f24c_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3724
- C:\Users\Admin\AppData\Local\Temp\pissa.exe
  "C:\Users\Admin\AppData\Local\Temp\pissa.exe"
  2⤵
  - Executes dropped EXE
  PID:4972

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
43KB

MD5
a0e882e0de07f74fa032764a2f7c1e35

SHA1
4d25219c8426f3e8df4265d6adf4a0ef07dcd311

SHA256
afdb75fb8778553504b5d5e6903ae695441814bfa204f3c5eee7368cf0d23ab6

SHA512
ec8b5c702d298d8cd28847fda9fef682208af65c4b61c531912c505c927a3cbcceeb5205b23eba0301318d5ce075065d73b275f6cbcf7efadedf1920d0d2b625

Download Submit
memory/3724-0-0x0000000002190000-0x0000000002196000-memory.dmp

Filesize
24KB

Download
memory/3724-1-0x0000000002190000-0x0000000002196000-memory.dmp

Filesize
24KB

Download
memory/3724-2-0x0000000003010000-0x0000000003016000-memory.dmp

Filesize
24KB

Download
memory/4972-23-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download