3accf8c0ba5162627886e10268f1f7c8a5d9fbf7bd5cac200a5d10289b5fa156

Analysis

max time kernel
115s
max time network
145s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
10/04/2024, 15:29

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General

Target

2024-04-10_788f6e9a323f911368bf765edce4ca5d_cryptolocker.exe
Size

37KB
MD5

788f6e9a323f911368bf765edce4ca5d
SHA1

13c2cd61353f4efd8a5c65b703bc18f6ee2fa1a6
SHA256

3accf8c0ba5162627886e10268f1f7c8a5d9fbf7bd5cac200a5d10289b5fa156
SHA512

d9ef4cea97f3fccbe70e6cb6fca2f57c0f8246d09bf5ecf128510ee529e5943d8473193962337422680ed81de98604b3a332f639cd2a0a387c88f411a79c185c
SSDEEP

384:btBYQg/WIEhUCSNyepEjYnDOAlzVol6U/zzo+tkq4XDIwNiJXxXunRSyHmYvV8B:btB9g/WItCSsAGjX7e9N0hunRvGIV8B

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023339-12.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-1-5-21-1904519900-954640453-4250331663-1000\Control Panel\International\Geo\Nation	2024-04-10_788f6e9a323f911368bf765edce4ca5d_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1904519900-954640453-4250331663-1000\Control Panel\International\Geo\Nation	gewos.exe

Executes dropped EXE 1 IoCs

pid	Process
1640	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 4844 wrote to memory of 1640	4844	2024-04-10_788f6e9a323f911368bf765edce4ca5d_cryptolocker.exe	95
PID 4844 wrote to memory of 1640	4844	2024-04-10_788f6e9a323f911368bf765edce4ca5d_cryptolocker.exe	95
PID 4844 wrote to memory of 1640	4844	2024-04-10_788f6e9a323f911368bf765edce4ca5d_cryptolocker.exe	95

C:\Users\Admin\AppData\Local\Temp\2024-04-10_788f6e9a323f911368bf765edce4ca5d_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-10_788f6e9a323f911368bf765edce4ca5d_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4844
- 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:1640

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=4076 --field-trial-handle=2972,i,4036376905309803364,5412922217215781933,262144 --variations-seed-version /prefetch:8
1⤵
PID:3336

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
7cfaabae1f9ccd0e5fe6d808a640a2a4

SHA1
69748fc0de05cfcf027500b55dff0c97723f66cc

SHA256
7aca8aa1818baad79e6dd72a2d116ac01338340d82ee20eaf4ca38301e4897f8

SHA512
8af164792b853333de5b2017bbe10e7c1251eaf6a1555e1387860d439d3f5e12dd9ab36dcdd5c7d6765d98871029ff2f8da37a55849709214be8d5865a35a204

Download Submit
memory/1640-20-0x0000000002120000-0x0000000002126000-memory.dmp

Filesize
24KB

Download
memory/4844-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/4844-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/4844-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download