a552a577a8be7335a7edbf7feda09e5d8699975c600c5b855fd82d850774d2dc

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20231025-en
resource tags

arch:x64arch:x86image:win10v2004-20231025-enlocale:en-usos:windows10-2004-x64system
submitted
05/11/2023, 15:06

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General

Target

NEAS.2023-09-27_0f73e239ed79001ef35c0fbf6984c078_cryptolocker_JC.exe
Size

50KB
MD5

0f73e239ed79001ef35c0fbf6984c078
SHA1

e3939423fb9601adcc48b3621b92efb7dd8651b8
SHA256

a552a577a8be7335a7edbf7feda09e5d8699975c600c5b855fd82d850774d2dc
SHA512

c94c6408ecdfd0e9ea9fb5e8fee516941f9bd05d3b4d2f2a74be2d875922eca8778b7c5305b09def04bd5e752916e9659bd6cd02c61a3f46d66381ccd64c2cec
SSDEEP

768:bIDOw9UiaCHfjnE0Sfa7ilR0p9u6p4ICNBCXK9Xv+ag:bIDOw9a0DwitDZzclg

Score

7^/10

Malware Config

Signatures

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-1-5-21-177160434-2093019976-369403398-1000\Control Panel\International\Geo\Nation	NEAS.2023-09-27_0f73e239ed79001ef35c0fbf6984c078_cryptolocker_JC.exe

Executes dropped EXE 1 IoCs

pid	Process
4344	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 2612 wrote to memory of 4344	2612	NEAS.2023-09-27_0f73e239ed79001ef35c0fbf6984c078_cryptolocker_JC.exe	86
PID 2612 wrote to memory of 4344	2612	NEAS.2023-09-27_0f73e239ed79001ef35c0fbf6984c078_cryptolocker_JC.exe	86
PID 2612 wrote to memory of 4344	2612	NEAS.2023-09-27_0f73e239ed79001ef35c0fbf6984c078_cryptolocker_JC.exe	86

C:\Users\Admin\AppData\Local\Temp\NEAS.2023-09-27_0f73e239ed79001ef35c0fbf6984c078_cryptolocker_JC.exe
"C:\Users\Admin\AppData\Local\Temp\NEAS.2023-09-27_0f73e239ed79001ef35c0fbf6984c078_cryptolocker_JC.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2612
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  PID:4344

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
50KB

MD5
d3e67cfaa6146f9af29ee0ff45ad202f

SHA1
f1209a61dd4537b799beb78f701f19e37054f859

SHA256
ce1b6f6298bb0e6ba395afcca0c341677dec197e2fa6bed44fba600d8a243b18

SHA512
06951cd5b7cbdffd67461574139caffdcb2e98f3c679e886f521d796cdd50db281ecc7adb5e3b3f1e479cb54e6b9a1ca412f8de4c415accbb6eb20cd11b726ee

Download Submit
C:\Users\Admin\AppData\Local\Temp\lossy.exe

Filesize
50KB

MD5
d3e67cfaa6146f9af29ee0ff45ad202f

SHA1
f1209a61dd4537b799beb78f701f19e37054f859

SHA256
ce1b6f6298bb0e6ba395afcca0c341677dec197e2fa6bed44fba600d8a243b18

SHA512
06951cd5b7cbdffd67461574139caffdcb2e98f3c679e886f521d796cdd50db281ecc7adb5e3b3f1e479cb54e6b9a1ca412f8de4c415accbb6eb20cd11b726ee

Download Submit
C:\Users\Admin\AppData\Local\Temp\lossy.exe

Filesize
50KB

MD5
d3e67cfaa6146f9af29ee0ff45ad202f

SHA1
f1209a61dd4537b799beb78f701f19e37054f859

SHA256
ce1b6f6298bb0e6ba395afcca0c341677dec197e2fa6bed44fba600d8a243b18

SHA512
06951cd5b7cbdffd67461574139caffdcb2e98f3c679e886f521d796cdd50db281ecc7adb5e3b3f1e479cb54e6b9a1ca412f8de4c415accbb6eb20cd11b726ee

Download Submit
memory/2612-0-0x0000000002180000-0x0000000002186000-memory.dmp

Filesize
24KB

Download
memory/2612-1-0x0000000002180000-0x0000000002186000-memory.dmp

Filesize
24KB

Download
memory/2612-2-0x00000000021B0000-0x00000000021B6000-memory.dmp

Filesize
24KB

Download
memory/4344-17-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4344-18-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download