534406336fe9e1327903cfa65232242275a725f41c7c6f1e7af15b68456e100a

Analysis

max time kernel
150s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
31/05/2024, 01:54

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General

Target

2024-05-31_e8bea4aa5a89e89eaf6b806fe7302950_cryptolocker.exe
Size

57KB
MD5

e8bea4aa5a89e89eaf6b806fe7302950
SHA1

f9b8ae10977bfaec8a1310fb66e45bad738e7eb2
SHA256

534406336fe9e1327903cfa65232242275a725f41c7c6f1e7af15b68456e100a
SHA512

9f5868732e79204264189491cd8f66bfb2747463111f1640e84c16f2f8248cb434ed1117929ff16da488251d2d1277381566e5f551466152126df9867194e724
SSDEEP

768:bIDOw9UiaCHfjnE0Sfa7ilR0p9u6p4ICNBCXK9XbTb8pu8:bIDOw9a0DwitDZzcTL8

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000c0000000233da-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-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation	2024-05-31_e8bea4aa5a89e89eaf6b806fe7302950_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2216	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 4700 wrote to memory of 2216	4700	2024-05-31_e8bea4aa5a89e89eaf6b806fe7302950_cryptolocker.exe	83
PID 4700 wrote to memory of 2216	4700	2024-05-31_e8bea4aa5a89e89eaf6b806fe7302950_cryptolocker.exe	83
PID 4700 wrote to memory of 2216	4700	2024-05-31_e8bea4aa5a89e89eaf6b806fe7302950_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-05-31_e8bea4aa5a89e89eaf6b806fe7302950_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-31_e8bea4aa5a89e89eaf6b806fe7302950_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4700
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  PID:2216

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
57KB

MD5
fdecc08d36abe4c962891c2b9247b374

SHA1
11c1d1d82ea9a0603149766c38cafc0b7e56405d

SHA256
d4f00f4c728aba06f37219968e439816d48e11be7831fac360eae26dc6c4647e

SHA512
a3572e57c1a6c5cedbe7ffab4cddb8f370c98b84c49a31f764f238a6a4d5fb687a105ad9895d977d92dcf00445f4103b49c63f83053e41e2387be19f42b3ff01

Download Submit
memory/2216-17-0x00000000006D0000-0x00000000006D6000-memory.dmp

Filesize
24KB

Download
memory/2216-23-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/4700-0-0x0000000001F40000-0x0000000001F46000-memory.dmp

Filesize
24KB

Download
memory/4700-8-0x0000000001F40000-0x0000000001F46000-memory.dmp

Filesize
24KB

Download
memory/4700-1-0x0000000001F60000-0x0000000001F66000-memory.dmp

Filesize
24KB

Download