fe09a898b65158aa653fd04cb2b573338b8bc831bc91db8ae8fac1db88939d4c

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
23/01/2024, 09:38

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General

Target

2024-01-23_2673660cb351427bb1131a17585fccf6_cryptolocker.exe
Size

41KB
MD5

2673660cb351427bb1131a17585fccf6
SHA1

b9b18d38a1ffa9be602dcd705966988129557e62
SHA256

fe09a898b65158aa653fd04cb2b573338b8bc831bc91db8ae8fac1db88939d4c
SHA512

fbac0ec98dca2f6d0fca0b84d4dae8af1322a35d3162eb51a332685f49af36d74c8dd0fc9a711ccb4ab5bad9d5ec69d6f700d21d3702ba594aec46846eece7af
SSDEEP

768:bxNQIE0eBhkL2Fo1CCwgfjOg1tsJ6zeen754XcwxbFqq10H:bxNrC7kYo1Fxf3s05rwxbFQH

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00080000000231e7-12.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	2024-01-23_2673660cb351427bb1131a17585fccf6_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3800	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 3628 wrote to memory of 3800	3628	2024-01-23_2673660cb351427bb1131a17585fccf6_cryptolocker.exe	88
PID 3628 wrote to memory of 3800	3628	2024-01-23_2673660cb351427bb1131a17585fccf6_cryptolocker.exe	88
PID 3628 wrote to memory of 3800	3628	2024-01-23_2673660cb351427bb1131a17585fccf6_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-01-23_2673660cb351427bb1131a17585fccf6_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-23_2673660cb351427bb1131a17585fccf6_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3628
- C:\Users\Admin\AppData\Local\Temp\pissa.exe
  "C:\Users\Admin\AppData\Local\Temp\pissa.exe"
  2⤵
  - Executes dropped EXE
  PID:3800

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
41KB

MD5
17649b87e54f85796825996458d27e2e

SHA1
cdf203b63d5c6e4e18b8c741c1adc109ee8dbd23

SHA256
59c7f6562513c3142c111301e21e6b3fe22fbc3cabdf1999311c6093c46a486d

SHA512
335b6c517e25b70cbcc2d0af3923290cc1b89254b97a081f4a56f2a8bdb415d34c130c9d406a8a0bc504b1dde1aa905d6de538c9f8ca63f4e78f57df3c893fe2

Download Submit
memory/3628-0-0x0000000002240000-0x0000000002246000-memory.dmp

Filesize
24KB

Download
memory/3628-2-0x0000000002280000-0x0000000002286000-memory.dmp

Filesize
24KB

Download
memory/3628-1-0x0000000002240000-0x0000000002246000-memory.dmp

Filesize
24KB

Download
memory/3800-17-0x00000000020D0000-0x00000000020D6000-memory.dmp

Filesize
24KB

Download
memory/3800-22-0x0000000002090000-0x0000000002096000-memory.dmp

Filesize
24KB

Download