5fb6dbac85c623a77961b5f68a7e08ebd8882fe1e005a1aec831ecc126c531e9

Analysis

max time kernel
149s
max time network
95s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
31/05/2024, 06:32 UTC

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General

Target

5fb6dbac85c623a77961b5f68a7e08ebd8882fe1e005a1aec831ecc126c531e9.exe
Size

77KB
MD5

36166cbc220ff39eef3b119788a3b10e
SHA1

697cfb3994ea7f7b37ffc3c8707ef91c5513c9d9
SHA256

5fb6dbac85c623a77961b5f68a7e08ebd8882fe1e005a1aec831ecc126c531e9
SHA512

bc5684f58212b0389b10c2a4e920eb38435044712ddcea103b5cd4c9691951c3820dd38f8210b995b4dca4e4c3f97a74aca1e8b93a60dd7e750172aec01613c5
SSDEEP

768:agO5xRYi+SfSWHHNvvG5bnl/NqNwsKVDstHxYD0p1aXKynF0vQmYZS0HdJnfWO27:RshfSWHHNvoLqNwDDGw02eQmh0HjWOZ8

Score

7^/10

persistence

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2708	rundll32.exe

Modifies system executable filetype association 2 TTPs 5 IoCs

persistence

Modify Registry

T1112

Change Default File Association

T1546.001

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	5fb6dbac85c623a77961b5f68a7e08ebd8882fe1e005a1aec831ecc126c531e9.exe
Key created	\REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	rundll32.exe
Key created	\REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command	5fb6dbac85c623a77961b5f68a7e08ebd8882fe1e005a1aec831ecc126c531e9.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*"	5fb6dbac85c623a77961b5f68a7e08ebd8882fe1e005a1aec831ecc126c531e9.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\¢«.exe	5fb6dbac85c623a77961b5f68a7e08ebd8882fe1e005a1aec831ecc126c531e9.exe
File opened for modification	C:\Windows\SysWOW64\notepad¢¬.exe	5fb6dbac85c623a77961b5f68a7e08ebd8882fe1e005a1aec831ecc126c531e9.exe
File created	C:\Windows\SysWOW64\notepad¢¬.exe	5fb6dbac85c623a77961b5f68a7e08ebd8882fe1e005a1aec831ecc126c531e9.exe
File opened for modification	C:\Windows\SysWOW64\¢«.exe	5fb6dbac85c623a77961b5f68a7e08ebd8882fe1e005a1aec831ecc126c531e9.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system\rundll32.exe	5fb6dbac85c623a77961b5f68a7e08ebd8882fe1e005a1aec831ecc126c531e9.exe
File created	C:\Windows\system\rundll32.exe	5fb6dbac85c623a77961b5f68a7e08ebd8882fe1e005a1aec831ecc126c531e9.exe

Modifies registry class 15 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\Software\Classes\txtfile\shell\open\command	5fb6dbac85c623a77961b5f68a7e08ebd8882fe1e005a1aec831ecc126c531e9.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad.exe %1"	5fb6dbac85c623a77961b5f68a7e08ebd8882fe1e005a1aec831ecc126c531e9.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainSetup = "1717137154"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	rundll32.exe
Key created	\REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command	5fb6dbac85c623a77961b5f68a7e08ebd8882fe1e005a1aec831ecc126c531e9.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	5fb6dbac85c623a77961b5f68a7e08ebd8882fe1e005a1aec831ecc126c531e9.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainUp = "1717137154"	rundll32.exe
Key created	\REGISTRY\MACHINE\Software\Classes\txtfile\shell\open\command	rundll32.exe
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	5fb6dbac85c623a77961b5f68a7e08ebd8882fe1e005a1aec831ecc126c531e9.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*"	5fb6dbac85c623a77961b5f68a7e08ebd8882fe1e005a1aec831ecc126c531e9.exe
Key created	\REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad¢¬ %1"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad¢¬ %1"	5fb6dbac85c623a77961b5f68a7e08ebd8882fe1e005a1aec831ecc126c531e9.exe
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	rundll32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainVer = "506"	rundll32.exe

Suspicious behavior: EnumeratesProcesses 28 IoCs

pid	Process
3748	5fb6dbac85c623a77961b5f68a7e08ebd8882fe1e005a1aec831ecc126c531e9.exe
3748	5fb6dbac85c623a77961b5f68a7e08ebd8882fe1e005a1aec831ecc126c531e9.exe
3748	5fb6dbac85c623a77961b5f68a7e08ebd8882fe1e005a1aec831ecc126c531e9.exe
3748	5fb6dbac85c623a77961b5f68a7e08ebd8882fe1e005a1aec831ecc126c531e9.exe
3748	5fb6dbac85c623a77961b5f68a7e08ebd8882fe1e005a1aec831ecc126c531e9.exe
3748	5fb6dbac85c623a77961b5f68a7e08ebd8882fe1e005a1aec831ecc126c531e9.exe
3748	5fb6dbac85c623a77961b5f68a7e08ebd8882fe1e005a1aec831ecc126c531e9.exe
3748	5fb6dbac85c623a77961b5f68a7e08ebd8882fe1e005a1aec831ecc126c531e9.exe
3748	5fb6dbac85c623a77961b5f68a7e08ebd8882fe1e005a1aec831ecc126c531e9.exe
3748	5fb6dbac85c623a77961b5f68a7e08ebd8882fe1e005a1aec831ecc126c531e9.exe
3748	5fb6dbac85c623a77961b5f68a7e08ebd8882fe1e005a1aec831ecc126c531e9.exe
3748	5fb6dbac85c623a77961b5f68a7e08ebd8882fe1e005a1aec831ecc126c531e9.exe
3748	5fb6dbac85c623a77961b5f68a7e08ebd8882fe1e005a1aec831ecc126c531e9.exe
3748	5fb6dbac85c623a77961b5f68a7e08ebd8882fe1e005a1aec831ecc126c531e9.exe
3748	5fb6dbac85c623a77961b5f68a7e08ebd8882fe1e005a1aec831ecc126c531e9.exe
3748	5fb6dbac85c623a77961b5f68a7e08ebd8882fe1e005a1aec831ecc126c531e9.exe
3748	5fb6dbac85c623a77961b5f68a7e08ebd8882fe1e005a1aec831ecc126c531e9.exe
3748	5fb6dbac85c623a77961b5f68a7e08ebd8882fe1e005a1aec831ecc126c531e9.exe
3748	5fb6dbac85c623a77961b5f68a7e08ebd8882fe1e005a1aec831ecc126c531e9.exe
3748	5fb6dbac85c623a77961b5f68a7e08ebd8882fe1e005a1aec831ecc126c531e9.exe
3748	5fb6dbac85c623a77961b5f68a7e08ebd8882fe1e005a1aec831ecc126c531e9.exe
3748	5fb6dbac85c623a77961b5f68a7e08ebd8882fe1e005a1aec831ecc126c531e9.exe
3748	5fb6dbac85c623a77961b5f68a7e08ebd8882fe1e005a1aec831ecc126c531e9.exe
3748	5fb6dbac85c623a77961b5f68a7e08ebd8882fe1e005a1aec831ecc126c531e9.exe
3748	5fb6dbac85c623a77961b5f68a7e08ebd8882fe1e005a1aec831ecc126c531e9.exe
3748	5fb6dbac85c623a77961b5f68a7e08ebd8882fe1e005a1aec831ecc126c531e9.exe
3748	5fb6dbac85c623a77961b5f68a7e08ebd8882fe1e005a1aec831ecc126c531e9.exe
3748	5fb6dbac85c623a77961b5f68a7e08ebd8882fe1e005a1aec831ecc126c531e9.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2708	rundll32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
3748	5fb6dbac85c623a77961b5f68a7e08ebd8882fe1e005a1aec831ecc126c531e9.exe
2708	rundll32.exe
2708	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3748 wrote to memory of 2708	3748	5fb6dbac85c623a77961b5f68a7e08ebd8882fe1e005a1aec831ecc126c531e9.exe	82
PID 3748 wrote to memory of 2708	3748	5fb6dbac85c623a77961b5f68a7e08ebd8882fe1e005a1aec831ecc126c531e9.exe	82
PID 3748 wrote to memory of 2708	3748	5fb6dbac85c623a77961b5f68a7e08ebd8882fe1e005a1aec831ecc126c531e9.exe	82

C:\Users\Admin\AppData\Local\Temp\5fb6dbac85c623a77961b5f68a7e08ebd8882fe1e005a1aec831ecc126c531e9.exe
"C:\Users\Admin\AppData\Local\Temp\5fb6dbac85c623a77961b5f68a7e08ebd8882fe1e005a1aec831ecc126c531e9.exe"
1⤵
- Modifies system executable filetype association
- Drops file in System32 directory
- Drops file in Windows directory
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3748
- C:\Windows\system\rundll32.exe
  C:\Windows\system\rundll32.exe
  2⤵
  - Executes dropped EXE
  - Modifies system executable filetype association
  - Modifies registry class
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of SetWindowsHookEx
  PID:2708

Network

DNS

www.zigui.org

rundll32.exe

Remote address:

8.8.8.8:53

Request

www.zigui.org

IN A

Response

www.zigui.org

IN A

103.251.237.123
DNS

217.106.137.52.in-addr.arpa

Remote address:

8.8.8.8:53

Request

217.106.137.52.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

95.221.229.192.in-addr.arpa

Remote address:

8.8.8.8:53

Request

95.221.229.192.in-addr.arpa

IN PTR

Response
DNS

73.159.190.20.in-addr.arpa

Remote address:

8.8.8.8:53

Request

73.159.190.20.in-addr.arpa

IN PTR

Response
DNS

104.219.191.52.in-addr.arpa

Remote address:

8.8.8.8:53

Request

104.219.191.52.in-addr.arpa

IN PTR

Response
DNS

103.169.127.40.in-addr.arpa

Remote address:

8.8.8.8:53

Request

103.169.127.40.in-addr.arpa

IN PTR

Response
DNS

206.23.85.13.in-addr.arpa

Remote address:

8.8.8.8:53

Request

206.23.85.13.in-addr.arpa

IN PTR

Response
DNS

31.243.111.52.in-addr.arpa

Remote address:

8.8.8.8:53

Request

31.243.111.52.in-addr.arpa

IN PTR

Response

103.251.237.123:80

www.zigui.org

rundll32.exe

260 B
5

8.8.8.8:53

www.zigui.org

dns

rundll32.exe

59 B
75 B
1
1

DNS Request

www.zigui.org

DNS Response

103.251.237.123
8.8.8.8:53

217.106.137.52.in-addr.arpa

dns

73 B
147 B
1
1

DNS Request

217.106.137.52.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

95.221.229.192.in-addr.arpa

dns

73 B
144 B
1
1

DNS Request

95.221.229.192.in-addr.arpa
8.8.8.8:53

73.159.190.20.in-addr.arpa

dns

72 B
158 B
1
1

DNS Request

73.159.190.20.in-addr.arpa
8.8.8.8:53

104.219.191.52.in-addr.arpa

dns

73 B
147 B
1
1

DNS Request

104.219.191.52.in-addr.arpa
8.8.8.8:53

103.169.127.40.in-addr.arpa

dns

73 B
147 B
1
1

DNS Request

103.169.127.40.in-addr.arpa
8.8.8.8:53

206.23.85.13.in-addr.arpa

dns

71 B
145 B
1
1

DNS Request

206.23.85.13.in-addr.arpa
8.8.8.8:53

31.243.111.52.in-addr.arpa

dns

72 B
158 B
1
1

DNS Request

31.243.111.52.in-addr.arpa

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Event Triggered Execution

T1546

Change Default File Association

T1546.001

Privilege Escalation

Event Triggered Execution

T1546

Change Default File Association

T1546.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\SysWOW64\notepad¢¬.exe

Filesize
75KB

MD5
1c0d6999f75527bc717d8081f5dbf44d

SHA1
ee6880aa7d2fa6b96921216ccd12c12bc04a62a0

SHA256
eb0126eb91131bad90d11e28ce2bcf5634013ab3950539032a4ac7dcee3f12bc

SHA512
0f4935dc1687524ffabb45d5d73f0a0b5a98f126e724e657a752d0c73f8a786fe3011fc60936a86af7812b849973a21dcc687864c57b51ebd1e0ea0b6689bd3a

Download Submit
C:\Windows\System\rundll32.exe

Filesize
83KB

MD5
963f2b06817e1af58f7b1fdbd58c9e75

SHA1
8e4f76cea602b376a24792542f6ed2b27f4d9cf8

SHA256
40b7099d59cc6a75e3a6417aa376f997d8a477cd44e2cabc58ee7113affda4dc

SHA512
309b794cb57fac574815c67c4f81d1dbf7388baeae649643400e522772f3fd349499a13bf0a6036c77e7bf4bf004c6ba50f7dfb6ee47a8421b5fd4d75ea5602a

Download Submit
memory/3748-0-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/3748-13-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

DNS Request

DNS Response

DNS Request

DNS Request

DNS Request

DNS Request

DNS Request

DNS Request

DNS Request

DNS Request

MITRE ATT&CK Enterprise v15

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Downloads

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