b251ff81131c396642cf36021b798e141c22fadd0a3b7ed5260e93535065c032

Analysis

max time kernel
150s
max time network
147s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
19/02/2024, 11:31

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General

Target

2024-02-19_3bda04f6a1d6d3542c6246d5654718b5_cryptolocker.exe
Size

40KB
MD5

3bda04f6a1d6d3542c6246d5654718b5
SHA1

37dacbb9c972a32fcc2a60531ebe686aa842d17e
SHA256

b251ff81131c396642cf36021b798e141c22fadd0a3b7ed5260e93535065c032
SHA512

20049f08b06172f061bcda8799b231a77916cadb3fcf27bc55ace1ab80c6a162551f6df686055e68edda0cef334613a1cab6fad4699837f813ba4b94b05e39f6
SSDEEP

768:bIDOw9UiaCHfjnE0Sf88AvvP1oghYvm9/6Dy8POKJ:bIDOw9a0Dwo3P1ojvUSDhr

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x001000000002315e-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-1-5-21-1232405761-1209240240-3206092754-1000\Control Panel\International\Geo\Nation	2024-02-19_3bda04f6a1d6d3542c6246d5654718b5_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3468	lossy.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 2208 wrote to memory of 3468	2208	2024-02-19_3bda04f6a1d6d3542c6246d5654718b5_cryptolocker.exe	85
PID 2208 wrote to memory of 3468	2208	2024-02-19_3bda04f6a1d6d3542c6246d5654718b5_cryptolocker.exe	85
PID 2208 wrote to memory of 3468	2208	2024-02-19_3bda04f6a1d6d3542c6246d5654718b5_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-02-19_3bda04f6a1d6d3542c6246d5654718b5_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-19_3bda04f6a1d6d3542c6246d5654718b5_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2208
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  PID:3468

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\lossy.exe

Filesize
40KB

MD5
7459d91ca5fbf38295945717bf01d288

SHA1
3658d8223eed323dbbe6240d7c9efdf5856a10b1

SHA256
da6baa83659d9a2f7956cf9439140c0cc2746c90b53dd7c9be1c88d369729c03

SHA512
1a2320da4e3d7c188274fd5cdf3e77359bc45e9d69c25c25044a7007d50b6085b4bcfe1f824a9ebead5004ed3f40c8ab757797af285af602766959ec6424558e

Download Submit
memory/2208-0-0x0000000002270000-0x0000000002276000-memory.dmp

Filesize
24KB

Download
memory/2208-1-0x0000000002270000-0x0000000002276000-memory.dmp

Filesize
24KB

Download
memory/2208-2-0x0000000002170000-0x0000000002176000-memory.dmp

Filesize
24KB

Download
memory/3468-17-0x0000000000500000-0x0000000000506000-memory.dmp

Filesize
24KB

Download
memory/3468-18-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download