0b701ba7c405ddefeea0c5748d816f697ba9fa7c30cedbc2fc5a607f7defc674

Analysis

max time kernel
153s
max time network
159s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
02/06/2024, 13:55

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General

Target

2024-06-02_dd9992cbe0e967903b16b31879b24685_cryptolocker.exe
Size

42KB
MD5

dd9992cbe0e967903b16b31879b24685
SHA1

848e4443b50a360cf95e8d740d25e7138601d5b8
SHA256

0b701ba7c405ddefeea0c5748d816f697ba9fa7c30cedbc2fc5a607f7defc674
SHA512

ebce38117929896b910b0c5f556bec4e95c13c3964f9b23497bfe41c4645c7f3c6db5e3c6793aa6f979369c382e4dcf302730e7d63b9b30b77a5d91574a855ad
SSDEEP

768:bCDOw9UiaKHfjnD0S16avdrQFiLjJvtAqAa:bCDOw9aMDooc+vAqAa

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/3968-0-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0008000000023237-13.dat	CryptoLocker_rule2
behavioral2/memory/576-17-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3968-26-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/576-27-0x0000000008000000-0x000000000800A000-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-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	2024-06-02_dd9992cbe0e967903b16b31879b24685_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
576	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 3968 wrote to memory of 576	3968	2024-06-02_dd9992cbe0e967903b16b31879b24685_cryptolocker.exe	90
PID 3968 wrote to memory of 576	3968	2024-06-02_dd9992cbe0e967903b16b31879b24685_cryptolocker.exe	90
PID 3968 wrote to memory of 576	3968	2024-06-02_dd9992cbe0e967903b16b31879b24685_cryptolocker.exe	90

C:\Users\Admin\AppData\Local\Temp\2024-06-02_dd9992cbe0e967903b16b31879b24685_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-02_dd9992cbe0e967903b16b31879b24685_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3968
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  PID:576

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 --mojo-platform-channel-handle=4072 --field-trial-handle=1928,i,13242902252791919845,10377620236057253993,262144 --variations-seed-version /prefetch:8
1⤵
PID:3212

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
42KB

MD5
a91b917c4a912e538304b167e333ab7f

SHA1
000aa85bfaf706639e96cf2c53dbb3fce38dd570

SHA256
769d3903866c406873a95bdfc76885d98200d7fed8de166cb1433049ff783166

SHA512
210b9548ca6e60e9b6eae724ada71b69dd6dd4ab7a08e0774cdaa8fad9885970e6dcf5ae06b1cd2b1fd8f0937bb064071a2e80d431dd50a48d6bb9f7889b3d4e

Download Submit
memory/576-17-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/576-19-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/576-20-0x0000000002060000-0x0000000002066000-memory.dmp

Filesize
24KB

Download
memory/576-27-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/3968-0-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/3968-1-0x0000000002300000-0x0000000002306000-memory.dmp

Filesize
24KB

Download
memory/3968-2-0x0000000002300000-0x0000000002306000-memory.dmp

Filesize
24KB

Download
memory/3968-3-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download
memory/3968-26-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download