1e4e508475486194728e0017d372c08910d54bb7a4fac63caab6cada91c7d5c4

Analysis

max time kernel
134s
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
02/06/2024, 02:27

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General

Target

2024-06-02_75756e0b12abc1b8d11ce801e0aa7373_cryptolocker.exe
Size

63KB
MD5

75756e0b12abc1b8d11ce801e0aa7373
SHA1

a09cd7221242343487ddb84932cb8b3ed76a7bf4
SHA256

1e4e508475486194728e0017d372c08910d54bb7a4fac63caab6cada91c7d5c4
SHA512

5c7c6a3cbb5b6e1ccd3ff3aa8e40282097d5d81808d3a598fd9159a42e9b9bb66f161cd3e8964d4e0397115dc947e431bd156d39e9edcb647fed9ebf306d9b58
SSDEEP

1536:btB9g/xtCSKfxLIc//Xr+/AO/kIZ3ft2nVuTKB6nggOlHdUHZnF7HG:btng54SMLr+/AO/kIhfoKMHdaE

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0005000000022975-12.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-1-5-21-1181767204-2009306918-3718769404-1000\Control Panel\International\Geo\Nation	2024-06-02_75756e0b12abc1b8d11ce801e0aa7373_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

pid	Process
2440	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 2800 wrote to memory of 2440	2800	2024-06-02_75756e0b12abc1b8d11ce801e0aa7373_cryptolocker.exe	93
PID 2800 wrote to memory of 2440	2800	2024-06-02_75756e0b12abc1b8d11ce801e0aa7373_cryptolocker.exe	93
PID 2800 wrote to memory of 2440	2800	2024-06-02_75756e0b12abc1b8d11ce801e0aa7373_cryptolocker.exe	93

C:\Users\Admin\AppData\Local\Temp\2024-06-02_75756e0b12abc1b8d11ce801e0aa7373_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-02_75756e0b12abc1b8d11ce801e0aa7373_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2800
- 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:2440

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=4584,i,17096020621006928097,15544233752327415349,262144 --variations-seed-version --mojo-platform-channel-handle=4360 /prefetch:8
1⤵
PID:2868

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
63KB

MD5
073bcbdbbc355cc4fe4a9fe08b98aeb5

SHA1
e0f868460ff69bc4395bc510a39826e5b7f773b7

SHA256
db4b053afb6dbccfc95a8755dc24f5f3191b3f04833ccc3c9e870bd092ae713a

SHA512
67e69bcc15a472150e96f0f52f630cf4e11109b097fb8c040986661420723bd939a67d7fbae00ca7a9cefca6449319520e8f18e3a88871fbaaa0bb903a56360a

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

Filesize
185B

MD5
3c7da3ade16389a994ebc17007daaad0

SHA1
a4f7c2e117ed2c68bf3a0fe5c676049ab04f8449

SHA256
10f6c251a3a0f0d2f4abae372d094d9873082c17c0137706500a809550fcd14e

SHA512
f6e651890ea62224251071faa264a5ecd8d41097521205cfbd45ed734e8d5730d8b7f6a2bfdcb3252718ec49262ecca67c24dafd149dbbe47b8f7636180d27dd

Download Submit
memory/2800-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/2800-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2800-8-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download