9f2e53a3d30be257c7ccfb40a75960933dc2fb4c8412c07d4efe27a31593aec1

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
12/03/2024, 21:32

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General

Target

2024-03-12_760b02f89b42cdb9838e858c154b68a1_cryptolocker.exe
Size

57KB
MD5

760b02f89b42cdb9838e858c154b68a1
SHA1

5ccc70ab6116dd74bcd0e7172b25485e6720fd94
SHA256

9f2e53a3d30be257c7ccfb40a75960933dc2fb4c8412c07d4efe27a31593aec1
SHA512

f756e02bcad70a3a558615d516c1a10ff1496f4647ea2c318839af395571536d3c25382c549c538aadaafdcdd736d71cb79c5e1c99c551cdd03bb50c230ef86d
SSDEEP

1536:btB9g/xtCSKfxLIc//Xr+/AO/kIZ3ft2nVuTKB6nggOlHdUHF:btng54SMLr+/AO/kIhfoKMHdk

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000002325f-12.dat	CryptoLocker_rule2

Checks computer location settings 2 TTPs 2 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	2024-03-12_760b02f89b42cdb9838e858c154b68a1_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	gewos.exe

Executes dropped EXE 1 IoCs

pid	Process
3708	gewos.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 4116 wrote to memory of 3708	4116	2024-03-12_760b02f89b42cdb9838e858c154b68a1_cryptolocker.exe	101
PID 4116 wrote to memory of 3708	4116	2024-03-12_760b02f89b42cdb9838e858c154b68a1_cryptolocker.exe	101
PID 4116 wrote to memory of 3708	4116	2024-03-12_760b02f89b42cdb9838e858c154b68a1_cryptolocker.exe	101

C:\Users\Admin\AppData\Local\Temp\2024-03-12_760b02f89b42cdb9838e858c154b68a1_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-12_760b02f89b42cdb9838e858c154b68a1_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4116
- C:\Users\Admin\AppData\Local\Temp\gewos.exe
  "C:\Users\Admin\AppData\Local\Temp\gewos.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  PID:3708

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=1340 --field-trial-handle=2236,i,5367110156796017614,12594004256180761011,262144 --variations-seed-version /prefetch:8
1⤵
PID:4268

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\gewos.exe

Filesize
57KB

MD5
3fe262886314f83391011dfccb29268e

SHA1
1a75b6b3f3a60634e90dc39d88c1e27533409994

SHA256
4d8e5f1942b670bb18db4d21a87b4e4950367a61946ec2a5f50db948d33600ee

SHA512
094f11eb65284f84609869437a3f94e862f7239edd19a07756fdcb30c1d9acd9ffb5f253cf92dacc030a61cf626fd24fd02158fcacb8bb55b8a706eeed591963

Download Submit
memory/3708-20-0x0000000002090000-0x0000000002096000-memory.dmp

Filesize
24KB

Download
memory/4116-0-0x00000000022D0000-0x00000000022D6000-memory.dmp

Filesize
24KB

Download
memory/4116-1-0x00000000022D0000-0x00000000022D6000-memory.dmp

Filesize
24KB

Download
memory/4116-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download