5758aeeb21d4640832d2a01511340b74945f51326e2bf289a3ac8c6dac6f56c3

Analysis

max time kernel
142s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
22/05/2024, 14:37

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-05-22_367d12684409341016c43a333c878ed6_cryptolocker.exe
Size

36KB
MD5

367d12684409341016c43a333c878ed6
SHA1

27306e15eebcf0e9b526e9ccab77875fa44b5b33
SHA256

5758aeeb21d4640832d2a01511340b74945f51326e2bf289a3ac8c6dac6f56c3
SHA512

739f61f2f0d431a54e2ee3db8cc03e6fc59613578e1e5f5c645b941479beb8ae7ae74db28698ea932c46950a4c15639ac49fd2ddd0099fb6c112051a80c7b305
SSDEEP

384:btBYQg/WIEhUCSNyepEjYnDOAlzVol6U/zzo+tkq4l8tFFxE2B0qZvvy:btB9g/WItCSsAGjX7r3BTZvvy

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000800000002325b-13.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	2024-05-22_367d12684409341016c43a333c878ed6_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
4844	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 4408 wrote to memory of 4844	4408	2024-05-22_367d12684409341016c43a333c878ed6_cryptolocker.exe	90
PID 4408 wrote to memory of 4844	4408	2024-05-22_367d12684409341016c43a333c878ed6_cryptolocker.exe	90
PID 4408 wrote to memory of 4844	4408	2024-05-22_367d12684409341016c43a333c878ed6_cryptolocker.exe	90

C:\Users\Admin\AppData\Local\Temp\2024-05-22_367d12684409341016c43a333c878ed6_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-22_367d12684409341016c43a333c878ed6_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4408
- 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:4844

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=1328 --field-trial-handle=3060,i,1774866140584649235,8085848018931772189,262144 --variations-seed-version /prefetch:8
1⤵
PID:4532

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

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\gewos.exe

Filesize
36KB

MD5
6fc9cef2db5d10540bfba57c7522f5bb

SHA1
20f9fed7a6b013fecc29d8959ed45e09b0a951c8

SHA256
7f938d2c3f030cee13cdc4b28a975024b4e6d85a78a4cf94eb47acb067c4f69c

SHA512
e87a04914522e11c17a2fc9b5d496073349a2973d8ae2fd540ecd45f71806121ab53d56baa41e1dc535205bbcdaaf081c4a1d748435f7283f27bc561c574fb77

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

Filesize
185B

MD5
bdf6cd561621d858dff770d20911cc99

SHA1
1b4afe623a70e57028a50a80d1cfe3231d8f143c

SHA256
9d6525b5f17f5daa592cea66f79a60c0dab70b5b4fbf88e2117fb20e2ea4ded7

SHA512
b97d13689bc75dd205655b74713055c7f63709288aa91a45ecbbd75816e1d250e92b4fc54b3e145221f5f5e7282c7aeef895b70f1a38c9a6d6400b8da4776e34

Download Submit
memory/4408-0-0x0000000002350000-0x0000000002356000-memory.dmp

Filesize
24KB

Download
memory/4408-1-0x0000000002350000-0x0000000002356000-memory.dmp

Filesize
24KB

Download
memory/4408-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4844-18-0x0000000002090000-0x0000000002096000-memory.dmp

Filesize
24KB

Download