795ff648bd79eb6e4dedfbd2d284b87da95da664479196449ea4836896db6c56

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
22-05-2024 19:01

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General

Target

20240521b712f54d1843f7f4991b919594c74fd8cryptolocker.exe
Size

43KB
MD5

b712f54d1843f7f4991b919594c74fd8
SHA1

b1cab6f6a500c6f1a1ac15ec7b49f34f9b5b15a5
SHA256

795ff648bd79eb6e4dedfbd2d284b87da95da664479196449ea4836896db6c56
SHA512

7b8b09f5252c06511c3b5f1c2916210950a383784e3bfaa45707c61791ecb29e13b3d3cbdc9f5b6e889012fe8b7156e1c1700f420f6a50370d6273f249ac603d
SSDEEP

768:bCDOw9UiaKHfjnD0S16avdrQFiLjJvtAydC:bCDOw9aMDooc+vAyU

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

Processes:

20240521b712f54d1843f7f4991b919594c74fd8cryptolocker.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\Control Panel\International\Geo\Nation	20240521b712f54d1843f7f4991b919594c74fd8cryptolocker.exe

Executes dropped EXE 1 IoCs

Processes:

lossy.exe

pid process

2568 lossy.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2568	lossy.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

20240521b712f54d1843f7f4991b919594c74fd8cryptolocker.exe

description	pid	process	target process
PID 3000 wrote to memory of 2568	3000	20240521b712f54d1843f7f4991b919594c74fd8cryptolocker.exe	lossy.exe
PID 3000 wrote to memory of 2568	3000	20240521b712f54d1843f7f4991b919594c74fd8cryptolocker.exe	lossy.exe
PID 3000 wrote to memory of 2568	3000	20240521b712f54d1843f7f4991b919594c74fd8cryptolocker.exe	lossy.exe

C:\Users\Admin\AppData\Local\Temp\20240521b712f54d1843f7f4991b919594c74fd8cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\20240521b712f54d1843f7f4991b919594c74fd8cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3000
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  PID:2568

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --field-trial-handle=4244,i,13035806169561352434,1332896185314862791,262144 --variations-seed-version --mojo-platform-channel-handle=3900 /prefetch:8
1⤵
PID:3628

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
43KB

MD5
43ce814b92fa066e24b9328130c05ea0

SHA1
92d63a4e7716694afcaa8a4ac47f493037b1b88d

SHA256
df686f7e0029687b436bb2f02d8ec31e300b8ccc46fbd78ed58961dd7940c54e

SHA512
51152128a087ad08e6c148de7227ac0fb9807abcdde805fe77c1e43f73eebb5d035fc7420b7f6c794435ca5707fb7583a8f5f098abe526732b6faa764d255a49

Download Submit
memory/2568-17-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/2568-20-0x00000000020F0000-0x00000000020F6000-memory.dmp

Filesize
24KB

Download
memory/2568-26-0x00000000020C0000-0x00000000020C6000-memory.dmp

Filesize
24KB

Download
memory/2568-27-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/3000-0-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/3000-1-0x00000000005C0000-0x00000000005C6000-memory.dmp

Filesize
24KB

Download
memory/3000-2-0x00000000005C0000-0x00000000005C6000-memory.dmp

Filesize
24KB

Download
memory/3000-3-0x0000000002060000-0x0000000002066000-memory.dmp

Filesize
24KB

Download
memory/3000-18-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download