afc334399b3e3b44fb28b0f069c134ccf4149da03e4e187fe3036b40e1061d50

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
29/02/2024, 03:45

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General

Target

2024-02-29_67781002f7b29b76a50c9b8262ff79f5_cryptolocker.exe
Size

53KB
MD5

67781002f7b29b76a50c9b8262ff79f5
SHA1

ee98e5b0231e73feb33998113b01ddf23e8e8a33
SHA256

afc334399b3e3b44fb28b0f069c134ccf4149da03e4e187fe3036b40e1061d50
SHA512

2f5db463ce9002396700ddcf2c31d40db89770a583ecdafc20d60e0ac176d3946cde7a2b2538b02e3c024085cc20aafc4166326f44c0bea0065fef2f1407b0e5
SSDEEP

768:bIDOw9UiaCHfjnE0Sfa7ilR0p9u6p4ICNBCXK9XbTbmhTY:bIDOw9a0DwitDZzcTh

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00080000000232f6-12.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-1-5-21-1904519900-954640453-4250331663-1000\Control Panel\International\Geo\Nation	2024-02-29_67781002f7b29b76a50c9b8262ff79f5_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3052	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 4140 wrote to memory of 3052	4140	2024-02-29_67781002f7b29b76a50c9b8262ff79f5_cryptolocker.exe	88
PID 4140 wrote to memory of 3052	4140	2024-02-29_67781002f7b29b76a50c9b8262ff79f5_cryptolocker.exe	88
PID 4140 wrote to memory of 3052	4140	2024-02-29_67781002f7b29b76a50c9b8262ff79f5_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-02-29_67781002f7b29b76a50c9b8262ff79f5_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-29_67781002f7b29b76a50c9b8262ff79f5_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4140
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  PID:3052

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
53KB

MD5
c65d5bbe45e9cf2d5a3b3c3c36b82dac

SHA1
1b49976d2bc9ba4860956394798a24395e7a1157

SHA256
5de0c1f271bb738e56111716815eb7656c0e3a9383499121d5aaabf9a416e8c1

SHA512
288921a02f982e437483d0e28faefe770964c52b5004259193091a8ddef9c48a7e618a6517c4a073b0eef0e9751d8878984a95b4cc7b2c3a80b3dd46b257512c

Download Submit
memory/3052-17-0x00000000020E0000-0x00000000020E6000-memory.dmp

Filesize
24KB

Download
memory/3052-19-0x00000000020C0000-0x00000000020C6000-memory.dmp

Filesize
24KB

Download
memory/4140-0-0x0000000002280000-0x0000000002286000-memory.dmp

Filesize
24KB

Download
memory/4140-1-0x0000000002280000-0x0000000002286000-memory.dmp

Filesize
24KB

Download
memory/4140-2-0x0000000002170000-0x0000000002176000-memory.dmp

Filesize
24KB

Download