2a57393ee6c8be2e6f077f9fcadd9386024fa6371b42e715f459a76dbdc1f49d

General

Target

2024-02-01_1090360d26072732ac893b6045f3a6e9_cryptolocker.exe
Size

126KB
MD5

1090360d26072732ac893b6045f3a6e9
SHA1

464022f6d1bbac8637a97efe5e76f4da9177afd5
SHA256

2a57393ee6c8be2e6f077f9fcadd9386024fa6371b42e715f459a76dbdc1f49d
SHA512

ec5ec095473772f4bb5f013c94eb31777fd908a73c7683d91a769356287d9a9c37b9902e3745d17cfe701c027594153c86e7fa4067ccf1c66d796c5e15281a9d
SSDEEP

1536:vj+jsMQMOtEvwDpj5HwYYTjipvF2hBfIuBKLUYOVbvh//K:vCjsIOtEvwDpj5H9YvQd2RQ

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000a000000013a1a-21.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x000a000000013a1a-21.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2200	misid.exe

Loads dropped DLL 1 IoCs

pid	Process
2900	2024-02-01_1090360d26072732ac893b6045f3a6e9_cryptolocker.exe

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

System Information Discovery
T1082

Modifies system certificate store 2 TTPs 3 IoCs

Install Root Certificate

T1553.004

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349	misid.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349\Blob = 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	misid.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349\Blob = 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	misid.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2900 wrote to memory of 2200	2900	2024-02-01_1090360d26072732ac893b6045f3a6e9_cryptolocker.exe	24
PID 2900 wrote to memory of 2200	2900	2024-02-01_1090360d26072732ac893b6045f3a6e9_cryptolocker.exe	24
PID 2900 wrote to memory of 2200	2900	2024-02-01_1090360d26072732ac893b6045f3a6e9_cryptolocker.exe	24
PID 2900 wrote to memory of 2200	2900	2024-02-01_1090360d26072732ac893b6045f3a6e9_cryptolocker.exe	24

C:\Users\Admin\AppData\Local\Temp\2024-02-01_1090360d26072732ac893b6045f3a6e9_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-01_1090360d26072732ac893b6045f3a6e9_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2900
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  - Modifies system certificate store
  PID:2200

Network

DNS

bestccc.com

misid.exe

Remote address:

8.8.8.8:53

Request

bestccc.com

IN A

Response

bestccc.com

IN A

103.14.121.240
GET

https://bestccc.com/hr/ho2.exe

misid.exe

Remote address:

103.14.121.240:443

Request

GET /hr/ho2.exe HTTP/1.1
Accept: text/*, application/*
User-Agent: Updates downloader
Host: bestccc.com
Cache-Control: no-cache

Response

HTTP/1.1 200 OK

Date: Thu, 01 Feb 2024 09:03:13 GMT
Content-Type: application/octet-stream
Transfer-Encoding: chunked
Connection: close
Server: imunify360-webshield/1.21
Last-Modified: Thursday, 01-Feb-2024 09:03:13 GMT
Cache-Control: private, no-store, no-cache, must-revalidate, proxy-revalidate, max-age=0, s-maxage=0
cf-edge-cache: no-cache
DNS

www.microsoft.com

misid.exe

Remote address:

8.8.8.8:53

Request

www.microsoft.com

IN A

Response

www.microsoft.com

IN CNAME

www.microsoft.com-c-3.edgekey.net

www.microsoft.com-c-3.edgekey.net

IN CNAME

www.microsoft.com-c-3.edgekey.net.globalredir.akadns.net

www.microsoft.com-c-3.edgekey.net.globalredir.akadns.net

IN CNAME

e13678.dscb.akamaiedge.net

e13678.dscb.akamaiedge.net

IN A

2.17.5.133
DNS

crl.comodoca.com

misid.exe

Remote address:

8.8.8.8:53

Request

crl.comodoca.com

IN A

Response

crl.comodoca.com

IN CNAME

crl.comodoca.com.cdn.cloudflare.net

crl.comodoca.com.cdn.cloudflare.net

IN A

172.64.149.23

crl.comodoca.com.cdn.cloudflare.net

IN A

104.18.38.233
GET

http://crl.comodoca.com/cPanelIncCertificationAuthority.crl

misid.exe

Remote address:

172.64.149.23:80

Request

GET /cPanelIncCertificationAuthority.crl HTTP/1.1
Connection: Keep-Alive
Accept: */*
User-Agent: Microsoft-CryptoAPI/6.1
Host: crl.comodoca.com

Response

HTTP/1.1 200 OK

Date: Thu, 01 Feb 2024 09:03:35 GMT
Content-Type: application/pkix-crl
Content-Length: 59932
Connection: keep-alive
Last-Modified: Wed, 31 Jan 2024 16:54:53 GMT
ETag: "65ba7b5d-ea1c"
X-CCACDN-Mirror-ID: mscrl2
Cache-Control: max-age=14400, s-maxage=3600
Expires: Wed, 07 Feb 2024 16:54:53 GMT
X-CCACDN-Proxy-ID: mcdpinlb3
X-Frame-Options: SAMEORIGIN
CF-Cache-Status: HIT
Age: 3127
Accept-Ranges: bytes
Server: cloudflare
CF-RAY: 84e905a56cf86389-LHR

103.14.121.240:443

https://bestccc.com/hr/ho2.exe

tls, http

misid.exe

1.2kB
3.7kB
10
9

HTTP Request

GET https://bestccc.com/hr/ho2.exe

HTTP Response

200
172.64.149.23:80

http://crl.comodoca.com/cPanelIncCertificationAuthority.crl

http

misid.exe

1.4kB
62.3kB
27
47

HTTP Request

GET http://crl.comodoca.com/cPanelIncCertificationAuthority.crl

HTTP Response

200

8.8.8.8:53

bestccc.com

dns

misid.exe

57 B
73 B
1
1

DNS Request

bestccc.com

DNS Response

103.14.121.240
8.8.8.8:53

www.microsoft.com

dns

misid.exe

63 B
230 B
1
1

DNS Request

www.microsoft.com

DNS Response

2.17.5.133
8.8.8.8:53

crl.comodoca.com

dns

misid.exe

62 B
143 B
1
1

DNS Request

crl.comodoca.com

DNS Response

172.64.149.23

104.18.38.233

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Subvert Trust Controls

1

T1553

Install Root Certificate

1

T1553.004

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015

Filesize
65KB

MD5
ac05d27423a85adc1622c714f2cb6184

SHA1
b0fe2b1abddb97837ea0195be70ab2ff14d43198

SHA256
c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d

SHA512
6d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d

Download Submit
C:\Users\Admin\AppData\Local\Temp\TarD4F.tmp

Filesize
171KB

MD5
9c0c641c06238516f27941aa1166d427

SHA1
64cd549fb8cf014fcd9312aa7a5b023847b6c977

SHA256
4276af3669a141a59388bc56a87f6614d9a9bdddf560636c264219a7eb11256f

SHA512
936ed0c0b0a7ff8e606b1cc4175a1f9b3699748ccbba1c3aff96203033d2e9edabf090e5148370df42fbfc4e31d7229493706ff24f19ff42ff7bef74a6baad06

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

Filesize
126KB

MD5
d45041de7efd3aa0d0e572f2f1dd29b2

SHA1
c5c093c28eeaacf59315e369abe04ba5578daea0

SHA256
24a8576b5ed2e3140777fd7a12e6d0bee5bbb59bdbe11665dd390f4ff7aa287a

SHA512
f376c49d00625abc7f419c6684aa1d1608b43af4b2d4b33edefea08a1d9502c34f801ee79dc88405131bb9c7d6f93fdd0ccfbbd54221dca50ca4efcd095876c8

Download Submit
memory/2200-15-0x0000000000480000-0x0000000000486000-memory.dmp

Filesize
24KB

Download
memory/2200-22-0x0000000000440000-0x0000000000446000-memory.dmp

Filesize
24KB

Download
memory/2900-1-0x00000000004A0000-0x00000000004A6000-memory.dmp

Filesize
24KB

Download
memory/2900-0-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/2900-8-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

HTTP Request

HTTP Response

HTTP Request

HTTP Response

DNS Request

DNS Response

DNS Request

DNS Response

DNS Request

DNS Response

MITRE ATT&CK Enterprise v15

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