2b899a12cbd95a19c545d4a48dc60402c1d257065f796567a37b3be1de934db3

Analysis

max time kernel
133s
max time network
127s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
23-05-2024 02:30

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General

Target

2024-05-23_585ac44aeff6f32486739fe3a57bd067_cryptolocker.exe
Size

36KB
MD5

585ac44aeff6f32486739fe3a57bd067
SHA1

0d3397fddf2803f3ab35f1469e1c0271c6c9b906
SHA256

2b899a12cbd95a19c545d4a48dc60402c1d257065f796567a37b3be1de934db3
SHA512

50775a49f990dcf3974aebdb15bd319f454525a7a9a652ccea72c46cf56738608aea3ba53242152c26ede690142d52b5d529bb69889d008b1c238de5227150f8
SSDEEP

384:btBYQg/WIEhUCSNyepEjYnDOAlzVol6U/zzo+tkq4l8tFFxE2B0qvoLUZ61V/:btB9g/WItCSsAGjX7r3BTmUQ1V/

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

Processes:

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

Processes:

2024-05-23_585ac44aeff6f32486739fe3a57bd067_cryptolocker.exegewos.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\Control Panel\International\Geo\Nation	2024-05-23_585ac44aeff6f32486739fe3a57bd067_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\Control Panel\International\Geo\Nation	gewos.exe

Executes dropped EXE 1 IoCs

Processes:

gewos.exe

pid process

1116 gewos.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
1116	gewos.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-05-23_585ac44aeff6f32486739fe3a57bd067_cryptolocker.exe

description	pid	process	target process
PID 2868 wrote to memory of 1116	2868	2024-05-23_585ac44aeff6f32486739fe3a57bd067_cryptolocker.exe	gewos.exe
PID 2868 wrote to memory of 1116	2868	2024-05-23_585ac44aeff6f32486739fe3a57bd067_cryptolocker.exe	gewos.exe
PID 2868 wrote to memory of 1116	2868	2024-05-23_585ac44aeff6f32486739fe3a57bd067_cryptolocker.exe	gewos.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-23_585ac44aeff6f32486739fe3a57bd067_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-23_585ac44aeff6f32486739fe3a57bd067_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2868
- 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:1116

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=4256,i,18168883380598738769,14202261231630113808,262144 --variations-seed-version --mojo-platform-channel-handle=1036 /prefetch:8
1⤵
PID:2060

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
37KB

MD5
49249c263d411ff41ecc5498423c6dd7

SHA1
85251c811aeb1caac0b9498163f697b7129d6e4d

SHA256
d8b5c3d80dd029a49e6c03d3d835d15fd26cb0518f3652e1e26900708f344451

SHA512
c78726ed776062ce84ae776f6d9cd589c5763812b5e14e73906ae53516307273a75a6973fc6d70aa018bf14799039696abf7f18c28c3e27cafc4628cfc421ebc

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

Filesize
185B

MD5
0a4576972fc4ff4ebe55a293241a41e7

SHA1
aa50fc48aa5712f741ca970b0b414a940363867e

SHA256
46248c2c9e4900101456b2e60817b6c9473d3366fd3c04c82d769277b550970a

SHA512
21429bf1028634e1bd4f9c6ca041428bbc9404d813ff61acb5e269fe8edf5a474a975f857821f16d02bb621de26f22870f8f894002c289b35e53d11d33a5541f

Download Submit
memory/1116-25-0x0000000002350000-0x0000000002356000-memory.dmp

Filesize
24KB

Download
memory/2868-0-0x00000000020D0000-0x00000000020D6000-memory.dmp

Filesize
24KB

Download
memory/2868-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2868-8-0x00000000020D0000-0x00000000020D6000-memory.dmp

Filesize
24KB

Download