e0e5253294f632251f5e53ca5fe22e17ab8e9b5f465f72012da1997a55f57213

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
submitted
30/04/2024, 18:24

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General

Target

2024-04-30_f5b8490492a06008dfa3ecc6ddf844a2_cryptolocker.exe
Size

41KB
MD5

f5b8490492a06008dfa3ecc6ddf844a2
SHA1

3fc4a141a6ebea7a740e4adbd704183e91e35c5c
SHA256

e0e5253294f632251f5e53ca5fe22e17ab8e9b5f465f72012da1997a55f57213
SHA512

4ef0fabfdbdd07ebd79eeca7d9bd62242c2c5995c369d4b1af6c7e7998cc87d1de9266b585e349bbfb49139d2d6b99cd8f8d875d083d7a2a9fcb14b6e0b910d0
SSDEEP

768:bIDOw9UiaCHfjnE0Sf88AvvP1oghYvm9/6DyE9xgyu:bIDOw9a0Dwo3P1ojvUSD79yyu

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000d000000023b24-12.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-1-5-21-2860750803-256193626-1801997576-1000\Control Panel\International\Geo\Nation	2024-04-30_f5b8490492a06008dfa3ecc6ddf844a2_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3196	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 2588 wrote to memory of 3196	2588	2024-04-30_f5b8490492a06008dfa3ecc6ddf844a2_cryptolocker.exe	83
PID 2588 wrote to memory of 3196	2588	2024-04-30_f5b8490492a06008dfa3ecc6ddf844a2_cryptolocker.exe	83
PID 2588 wrote to memory of 3196	2588	2024-04-30_f5b8490492a06008dfa3ecc6ddf844a2_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-04-30_f5b8490492a06008dfa3ecc6ddf844a2_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-30_f5b8490492a06008dfa3ecc6ddf844a2_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2588
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  PID:3196

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
41KB

MD5
cf2f5084dc4d75b713448cb167b21f3f

SHA1
c05a8012e5a6e974ea026adf76368595f7584d03

SHA256
240fd70bd3704243fc0b1739b4112f03cdd1c9d445c66b9b0dfe02daa707d1dd

SHA512
d1af07981e7a66b56d53277473fe96e0fb1d82741b2ec51a4af5c7429e46593b051717d3d5e020f17f5d782c25d96d599d5497d3acc94eceb53ad586e20d1ccd

Download Submit
memory/2588-0-0x0000000000760000-0x0000000000766000-memory.dmp

Filesize
24KB

Download
memory/2588-2-0x0000000002220000-0x0000000002226000-memory.dmp

Filesize
24KB

Download
memory/2588-1-0x0000000000760000-0x0000000000766000-memory.dmp

Filesize
24KB

Download
memory/3196-17-0x00000000005C0000-0x00000000005C6000-memory.dmp

Filesize
24KB

Download
memory/3196-23-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download