08a25a96ffe2af9b6cf405e211adb512a04b1f8c334663e2d9d9ddef9819309b

Analysis

max time kernel
150s
max time network
158s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
10/06/2024, 07:46

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General

Target

2024-06-10_a05377d588ace4c20c1099734ac4aa64_cryptolocker.exe
Size

44KB
MD5

a05377d588ace4c20c1099734ac4aa64
SHA1

045e6dcd255f5c9cec512f24f585b072065bd9bd
SHA256

08a25a96ffe2af9b6cf405e211adb512a04b1f8c334663e2d9d9ddef9819309b
SHA512

07f6c367177a47e04b7e12747c7e6fa8775c562de0608c64f6e723e158ed037252505a92127165bba10e06c979bd0858575d3d2848249346bf2a68faf4db3b90
SSDEEP

768:bCDOw9UiaKHfjnD0S16avdrQFiLjJvtAH0I:bCDOw9aMDooc+vAUI

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/3728-0-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0008000000023598-13.dat	CryptoLocker_rule2
behavioral2/memory/4364-17-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3728-18-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4364-27-0x0000000008000000-0x000000000800A000-memory.dmp	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-1-5-21-1181767204-2009306918-3718769404-1000\Control Panel\International\Geo\Nation	2024-06-10_a05377d588ace4c20c1099734ac4aa64_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4364	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 3728 wrote to memory of 4364	3728	2024-06-10_a05377d588ace4c20c1099734ac4aa64_cryptolocker.exe	89
PID 3728 wrote to memory of 4364	3728	2024-06-10_a05377d588ace4c20c1099734ac4aa64_cryptolocker.exe	89
PID 3728 wrote to memory of 4364	3728	2024-06-10_a05377d588ace4c20c1099734ac4aa64_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-06-10_a05377d588ace4c20c1099734ac4aa64_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-10_a05377d588ace4c20c1099734ac4aa64_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3728
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  PID:4364

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=4224,i,13544508926340531097,6671217806016090640,262144 --variations-seed-version --mojo-platform-channel-handle=4100 /prefetch:8
1⤵
PID:632

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
44KB

MD5
2c01273e75ca0e36ae1d4c6c5b9a3511

SHA1
40f2637e94521af1b1084007e0dc5b67f1e25ff8

SHA256
6a05d3393774a8114361e4eca6ea61df4a8499b5ca3c452f01a6d2bc4377bb44

SHA512
f48d31c5bf1bb9c12692336d008b5e3327ea10747bcee08c66d92682df1ddffa069fd1b901fd4449e6c369e584f226b59c4fd81ea06e536acd308c2e24e5f72b

Download Submit
memory/3728-0-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/3728-1-0x00000000021B0000-0x00000000021B6000-memory.dmp

Filesize
24KB

Download
memory/3728-2-0x00000000021B0000-0x00000000021B6000-memory.dmp

Filesize
24KB

Download
memory/3728-4-0x0000000002040000-0x0000000002046000-memory.dmp

Filesize
24KB

Download
memory/3728-18-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/4364-17-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/4364-20-0x0000000002070000-0x0000000002076000-memory.dmp

Filesize
24KB

Download
memory/4364-26-0x0000000002040000-0x0000000002046000-memory.dmp

Filesize
24KB

Download
memory/4364-27-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download