b97b918ee73c621376b9ede878d466cdf7eb8c9ba7ea7f670f044158da2d6091

Analysis

max time kernel
150s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
17-02-2024 15:29

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General

Target

2024-02-17_64923488ef7a9ca6258f1990f912a22b_cryptolocker.exe
Size

41KB
MD5

64923488ef7a9ca6258f1990f912a22b
SHA1

f1c52dfb7e8a4fbe740bcafd006fd24d49096941
SHA256

b97b918ee73c621376b9ede878d466cdf7eb8c9ba7ea7f670f044158da2d6091
SHA512

2734bc41bfb00b56a1f190282d474e334c3ba085e3e8a3b9c8835fb8a13bf4242339cc9eb78faf8c21626e3e2510b7646389c03db6557df4d4c940db1860793e
SSDEEP

384:bgX4uGLLQRcsdeQ7/nQu63Ag7YmecFanrlwfjDUkKDfWf0w3sp8u5co9+slGA:bgX4zYcgTEu6QOaryfjqDDw3sCu5b+sR

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000600000002321f-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-1-5-21-635608581-3370340891-292606865-1000\Control Panel\International\Geo\Nation	2024-02-17_64923488ef7a9ca6258f1990f912a22b_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4408	hasfj.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 1464 wrote to memory of 4408	1464	2024-02-17_64923488ef7a9ca6258f1990f912a22b_cryptolocker.exe	83
PID 1464 wrote to memory of 4408	1464	2024-02-17_64923488ef7a9ca6258f1990f912a22b_cryptolocker.exe	83
PID 1464 wrote to memory of 4408	1464	2024-02-17_64923488ef7a9ca6258f1990f912a22b_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-02-17_64923488ef7a9ca6258f1990f912a22b_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-17_64923488ef7a9ca6258f1990f912a22b_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1464
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:4408

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\hasfj.exe

Filesize
41KB

MD5
00d3bfa5e5013d9efeb63a4b0009a192

SHA1
328d4923cc647e46df8e5ce5637fcb52eed97da3

SHA256
5b073338491480c30ea42fde05306f7bd7e1b049389f5185d5817a82da0c4244

SHA512
ef990686b27af43d9b0ba5290dabb2ece282964e20f14895b749fbdf9620008ba871a7e752efb472ef8a864c816017251856cbd9aba0a063d9f484ce9834fd21

Download Submit
memory/1464-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/1464-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/1464-2-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download
memory/4408-18-0x0000000002D60000-0x0000000002D66000-memory.dmp

Filesize
24KB

Download
memory/4408-17-0x0000000002ED0000-0x0000000002ED6000-memory.dmp

Filesize
24KB

Download