0df728a76eaae5006b0b61771d3bbbb36f0f90eda1c47135b0ec7f1a6e9516a1

Analysis

max time kernel
136s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
27-01-2024 05:32

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General

Target

2024-01-27_d125b26d982406f7a7f2b21474e12cee_cryptolocker.exe
Size

40KB
MD5

d125b26d982406f7a7f2b21474e12cee
SHA1

8345be87cba100a4a3fb29462492f134aafd1d55
SHA256

0df728a76eaae5006b0b61771d3bbbb36f0f90eda1c47135b0ec7f1a6e9516a1
SHA512

fe5899b6132f0c6f0042d0641ba0e76cf693d18107c5f2518e8173c1f39e1ecd17ea3f73624c1e04413007373e54b7e341d0ff6e026f4505abdc79f30855e83a
SSDEEP

768:bIDOw9UiaCHfjnE0Sf88AvvP1oghYvm9/6Dy8PE3:bIDOw9a0Dwo3P1ojvUSDhc3

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000600000002321b-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-1-5-21-3336304223-2978740688-3645194410-1000\Control Panel\International\Geo\Nation	2024-01-27_d125b26d982406f7a7f2b21474e12cee_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3848	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 1952 wrote to memory of 3848	1952	2024-01-27_d125b26d982406f7a7f2b21474e12cee_cryptolocker.exe	88
PID 1952 wrote to memory of 3848	1952	2024-01-27_d125b26d982406f7a7f2b21474e12cee_cryptolocker.exe	88
PID 1952 wrote to memory of 3848	1952	2024-01-27_d125b26d982406f7a7f2b21474e12cee_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-01-27_d125b26d982406f7a7f2b21474e12cee_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-27_d125b26d982406f7a7f2b21474e12cee_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1952
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  PID:3848

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
cf83026ab1c91cf8e4498f3f5a48026d

SHA1
03b168903016bc11b8d847d7b34843ac803666a8

SHA256
2c2ee119931b824de3850280e127ed100f5c80c156a9b6ec2bd2d7fb1c68bfdd

SHA512
442b2e6b180df8a81767ed92ee8c4b64a9c067de9cf248078884f35cffae086187eb95fa4374466706e70b31566034837e63aa1c2e55a97c6d3c9448758538b4

Download Submit
memory/1952-0-0x0000000002180000-0x0000000002186000-memory.dmp

Filesize
24KB

Download
memory/1952-1-0x0000000002180000-0x0000000002186000-memory.dmp

Filesize
24KB

Download
memory/1952-2-0x00000000021B0000-0x00000000021B6000-memory.dmp

Filesize
24KB

Download
memory/3848-17-0x0000000002070000-0x0000000002076000-memory.dmp

Filesize
24KB

Download
memory/3848-19-0x0000000002050000-0x0000000002056000-memory.dmp

Filesize
24KB

Download