a766b8fee987874b95c70ef2d4240c541df3b32e17d3a80e41e0b4a00468b050

General

Target

a766b8fee987874b95c70ef2d4240c541df3b32e17d3a80e41e0b4a00468b050.exe
Size

286KB
MD5

0dc2f8d7a662bac9d1e0da123609aba0
SHA1

bc334490f0f1c22f9a3accdae35b9345e71b4d69
SHA256

a766b8fee987874b95c70ef2d4240c541df3b32e17d3a80e41e0b4a00468b050
SHA512

b802d059feb2b5c051f13ad11312c314138d43b64b6384cb9ec352e34b359f9fe56beb0f574e0329a8ac1751d2a7f6c638365e6914b5f740117f010beb5ccd9c
SSDEEP

6144:/OJGUDbfd/6+D1Hon0PB2eYlLXiygmpEeIwJ9/3H64oO5Q:iGmJ/6yTPB2tXiBmpEeIwJpX6SQ

Score

8^/10

persistence

Malware Config

Signatures

Executes dropped EXE 1 IoCs

Processes:

hyci.exe

pid process

1484 hyci.exe
Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

1768 cmd.exe

pid	process
1768	cmd.exe

Loads dropped DLL 2 IoCs

Processes:

a766b8fee987874b95c70ef2d4240c541df3b32e17d3a80e41e0b4a00468b050.exe

pid	process
2016	a766b8fee987874b95c70ef2d4240c541df3b32e17d3a80e41e0b4a00468b050.exe
2016	a766b8fee987874b95c70ef2d4240c541df3b32e17d3a80e41e0b4a00468b050.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

hyci.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\Utpac = "C:\\Users\\Admin\\AppData\\Roaming\\Ysno\\hyci.exe"	hyci.exe
Key created	\REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\Currentversion\Run	hyci.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

a766b8fee987874b95c70ef2d4240c541df3b32e17d3a80e41e0b4a00468b050.exe

description	pid	process	target process
PID 2016 set thread context of 1768	2016	a766b8fee987874b95c70ef2d4240c541df3b32e17d3a80e41e0b4a00468b050.exe	cmd.exe

Modifies Internet Explorer settings 1 TTPs 2 IoCs

adware spyware

Modify Registry

T1112

Processes:

a766b8fee987874b95c70ef2d4240c541df3b32e17d3a80e41e0b4a00468b050.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Internet Explorer\Privacy	a766b8fee987874b95c70ef2d4240c541df3b32e17d3a80e41e0b4a00468b050.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Internet Explorer\Privacy\CleanCookies = "0"	a766b8fee987874b95c70ef2d4240c541df3b32e17d3a80e41e0b4a00468b050.exe

NTFS ADS 1 IoCs

Processes:

WinMail.exe

description	ioc	process
File opened for modification	C:\Users\Admin\AppData\Local\Microsoft\Windows Mail\Local Folders\Inbox\7E036F39-00000001.eml:OECustomProperty	WinMail.exe

Suspicious behavior: EnumeratesProcesses 27 IoCs

Processes:

hyci.exe

pid	process
1484	hyci.exe
1484	hyci.exe
1484	hyci.exe
1484	hyci.exe
1484	hyci.exe
1484	hyci.exe
1484	hyci.exe
1484	hyci.exe
1484	hyci.exe
1484	hyci.exe
1484	hyci.exe
1484	hyci.exe
1484	hyci.exe
1484	hyci.exe
1484	hyci.exe
1484	hyci.exe
1484	hyci.exe
1484	hyci.exe
1484	hyci.exe
1484	hyci.exe
1484	hyci.exe
1484	hyci.exe
1484	hyci.exe
1484	hyci.exe
1484	hyci.exe
1484	hyci.exe
1484	hyci.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

a766b8fee987874b95c70ef2d4240c541df3b32e17d3a80e41e0b4a00468b050.exeWinMail.exe

description	pid	process
Token: SeSecurityPrivilege	2016	a766b8fee987874b95c70ef2d4240c541df3b32e17d3a80e41e0b4a00468b050.exe
Token: SeSecurityPrivilege	2016	a766b8fee987874b95c70ef2d4240c541df3b32e17d3a80e41e0b4a00468b050.exe
Token: SeManageVolumePrivilege	344	WinMail.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

WinMail.exe

pid process

344 WinMail.exe

pid	process
344	WinMail.exe

Suspicious use of WriteProcessMemory 64 IoCs

Processes:

a766b8fee987874b95c70ef2d4240c541df3b32e17d3a80e41e0b4a00468b050.exehyci.exe

description	pid	process	target process
PID 2016 wrote to memory of 1484	2016	a766b8fee987874b95c70ef2d4240c541df3b32e17d3a80e41e0b4a00468b050.exe	hyci.exe
PID 2016 wrote to memory of 1484	2016	a766b8fee987874b95c70ef2d4240c541df3b32e17d3a80e41e0b4a00468b050.exe	hyci.exe
PID 2016 wrote to memory of 1484	2016	a766b8fee987874b95c70ef2d4240c541df3b32e17d3a80e41e0b4a00468b050.exe	hyci.exe
PID 2016 wrote to memory of 1484	2016	a766b8fee987874b95c70ef2d4240c541df3b32e17d3a80e41e0b4a00468b050.exe	hyci.exe
PID 1484 wrote to memory of 1116	1484	hyci.exe	taskhost.exe
PID 1484 wrote to memory of 1116	1484	hyci.exe	taskhost.exe
PID 1484 wrote to memory of 1116	1484	hyci.exe	taskhost.exe
PID 1484 wrote to memory of 1116	1484	hyci.exe	taskhost.exe
PID 1484 wrote to memory of 1116	1484	hyci.exe	taskhost.exe
PID 1484 wrote to memory of 1168	1484	hyci.exe	Dwm.exe
PID 1484 wrote to memory of 1168	1484	hyci.exe	Dwm.exe
PID 1484 wrote to memory of 1168	1484	hyci.exe	Dwm.exe
PID 1484 wrote to memory of 1168	1484	hyci.exe	Dwm.exe
PID 1484 wrote to memory of 1168	1484	hyci.exe	Dwm.exe
PID 1484 wrote to memory of 1224	1484	hyci.exe	Explorer.EXE
PID 1484 wrote to memory of 1224	1484	hyci.exe	Explorer.EXE
PID 1484 wrote to memory of 1224	1484	hyci.exe	Explorer.EXE
PID 1484 wrote to memory of 1224	1484	hyci.exe	Explorer.EXE
PID 1484 wrote to memory of 1224	1484	hyci.exe	Explorer.EXE
PID 1484 wrote to memory of 2016	1484	hyci.exe	a766b8fee987874b95c70ef2d4240c541df3b32e17d3a80e41e0b4a00468b050.exe
PID 1484 wrote to memory of 2016	1484	hyci.exe	a766b8fee987874b95c70ef2d4240c541df3b32e17d3a80e41e0b4a00468b050.exe
PID 1484 wrote to memory of 2016	1484	hyci.exe	a766b8fee987874b95c70ef2d4240c541df3b32e17d3a80e41e0b4a00468b050.exe
PID 1484 wrote to memory of 2016	1484	hyci.exe	a766b8fee987874b95c70ef2d4240c541df3b32e17d3a80e41e0b4a00468b050.exe
PID 1484 wrote to memory of 2016	1484	hyci.exe	a766b8fee987874b95c70ef2d4240c541df3b32e17d3a80e41e0b4a00468b050.exe
PID 1484 wrote to memory of 344	1484	hyci.exe	WinMail.exe
PID 1484 wrote to memory of 344	1484	hyci.exe	WinMail.exe
PID 1484 wrote to memory of 344	1484	hyci.exe	WinMail.exe
PID 1484 wrote to memory of 344	1484	hyci.exe	WinMail.exe
PID 1484 wrote to memory of 344	1484	hyci.exe	WinMail.exe
PID 2016 wrote to memory of 1768	2016	a766b8fee987874b95c70ef2d4240c541df3b32e17d3a80e41e0b4a00468b050.exe	cmd.exe
PID 2016 wrote to memory of 1768	2016	a766b8fee987874b95c70ef2d4240c541df3b32e17d3a80e41e0b4a00468b050.exe	cmd.exe
PID 2016 wrote to memory of 1768	2016	a766b8fee987874b95c70ef2d4240c541df3b32e17d3a80e41e0b4a00468b050.exe	cmd.exe
PID 2016 wrote to memory of 1768	2016	a766b8fee987874b95c70ef2d4240c541df3b32e17d3a80e41e0b4a00468b050.exe	cmd.exe
PID 2016 wrote to memory of 1768	2016	a766b8fee987874b95c70ef2d4240c541df3b32e17d3a80e41e0b4a00468b050.exe	cmd.exe
PID 2016 wrote to memory of 1768	2016	a766b8fee987874b95c70ef2d4240c541df3b32e17d3a80e41e0b4a00468b050.exe	cmd.exe
PID 2016 wrote to memory of 1768	2016	a766b8fee987874b95c70ef2d4240c541df3b32e17d3a80e41e0b4a00468b050.exe	cmd.exe
PID 2016 wrote to memory of 1768	2016	a766b8fee987874b95c70ef2d4240c541df3b32e17d3a80e41e0b4a00468b050.exe	cmd.exe
PID 2016 wrote to memory of 1768	2016	a766b8fee987874b95c70ef2d4240c541df3b32e17d3a80e41e0b4a00468b050.exe	cmd.exe
PID 1484 wrote to memory of 1740	1484	hyci.exe	DllHost.exe
PID 1484 wrote to memory of 1740	1484	hyci.exe	DllHost.exe
PID 1484 wrote to memory of 1740	1484	hyci.exe	DllHost.exe
PID 1484 wrote to memory of 1740	1484	hyci.exe	DllHost.exe
PID 1484 wrote to memory of 1740	1484	hyci.exe	DllHost.exe
PID 1484 wrote to memory of 1720	1484	hyci.exe	conhost.exe
PID 1484 wrote to memory of 1720	1484	hyci.exe	conhost.exe
PID 1484 wrote to memory of 1720	1484	hyci.exe	conhost.exe
PID 1484 wrote to memory of 1720	1484	hyci.exe	conhost.exe
PID 1484 wrote to memory of 1720	1484	hyci.exe	conhost.exe
PID 1484 wrote to memory of 592	1484	hyci.exe	DllHost.exe
PID 1484 wrote to memory of 592	1484	hyci.exe	DllHost.exe
PID 1484 wrote to memory of 592	1484	hyci.exe	DllHost.exe
PID 1484 wrote to memory of 592	1484	hyci.exe	DllHost.exe
PID 1484 wrote to memory of 592	1484	hyci.exe	DllHost.exe
PID 1484 wrote to memory of 1808	1484	hyci.exe	DllHost.exe
PID 1484 wrote to memory of 1808	1484	hyci.exe	DllHost.exe
PID 1484 wrote to memory of 1808	1484	hyci.exe	DllHost.exe
PID 1484 wrote to memory of 1808	1484	hyci.exe	DllHost.exe
PID 1484 wrote to memory of 1808	1484	hyci.exe	DllHost.exe
PID 1484 wrote to memory of 1592	1484	hyci.exe	DllHost.exe
PID 1484 wrote to memory of 1592	1484	hyci.exe	DllHost.exe
PID 1484 wrote to memory of 1592	1484	hyci.exe	DllHost.exe
PID 1484 wrote to memory of 1592	1484	hyci.exe	DllHost.exe
PID 1484 wrote to memory of 1592	1484	hyci.exe	DllHost.exe
PID 1484 wrote to memory of 992	1484	hyci.exe	DllHost.exe

C:\Windows\system32\taskhost.exe
"taskhost.exe"
1⤵
PID:1116

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:1224

C:\Users\Admin\AppData\Local\Temp\a766b8fee987874b95c70ef2d4240c541df3b32e17d3a80e41e0b4a00468b050.exe
"C:\Users\Admin\AppData\Local\Temp\a766b8fee987874b95c70ef2d4240c541df3b32e17d3a80e41e0b4a00468b050.exe"
2⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Modifies Internet Explorer settings
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2016

C:\Users\Admin\AppData\Roaming\Ysno\hyci.exe
"C:\Users\Admin\AppData\Roaming\Ysno\hyci.exe"
3⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1484

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\system32\cmd.exe" /c "C:\Users\Admin\AppData\Local\Temp\tmpd5f69d18.bat"
3⤵
- Deletes itself
PID:1768

C:\Windows\system32\Dwm.exe
"C:\Windows\system32\Dwm.exe"
1⤵
PID:1168

C:\Program Files\Windows Mail\WinMail.exe
"C:\Program Files\Windows Mail\WinMail.exe" -Embedding
1⤵
- NTFS ADS
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:344

C:\Windows\system32\DllHost.exe
C:\Windows\system32\DllHost.exe /Processid:{3EB3C877-1F16-487C-9050-104DBCD66683}
1⤵
PID:1740

C:\Windows\system32\conhost.exe
\??\C:\Windows\system32\conhost.exe "-589920172400504039-18254820811875247800-597754174935516391-1036802703-600415045"
1⤵
PID:1720

C:\Windows\system32\DllHost.exe
C:\Windows\system32\DllHost.exe /Processid:{F9717507-6651-4EDB-BFF7-AE615179BCCF}
1⤵
PID:592

C:\Windows\system32\DllHost.exe
C:\Windows\system32\DllHost.exe /Processid:{F9717507-6651-4EDB-BFF7-AE615179BCCF}
1⤵
PID:1808

C:\Windows\system32\DllHost.exe
C:\Windows\system32\DllHost.exe /Processid:{F9717507-6651-4EDB-BFF7-AE615179BCCF}
1⤵
PID:1592

C:\Windows\system32\DllHost.exe
C:\Windows\system32\DllHost.exe /Processid:{F9717507-6651-4EDB-BFF7-AE615179BCCF}
1⤵
PID:992

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

2

T1112

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpd5f69d18.bat
Filesize
307B

MD5
80bea3a3d24045ad42ec7a19d2d1a05a

SHA1
c88882a8e1a96245562ea2bae2501ebf93c6d315

SHA256
781094d5ddb9928528578453aabdb80ca022404711b8c401a094a8e8c75053ee

SHA512
883413d4c8d2e1b494fd4aa7e8ac84e9279e11cd7308b71dbf9eaca90e71f3e56ce77a186f2cd163e5e2bafb6cb36c5933faa4b458738f7ec719b10934e8d5a5

Download Submit
C:\Users\Admin\AppData\Roaming\Ysno\hyci.exe
Filesize
286KB

MD5
e90d94ab94dad5ae455df550727b800a

SHA1
f0f1b587202326c1902335e0ff841d5d7d5710c0

SHA256
63fa815fc072f049b38ce642aafd21082ac7da7dc1ea44c2b1c6670cda8f5d9e

SHA512
877b2b783c3c84d6e9a31c3a296092850d09eee7e977d7a9c12025912e076e9afdcd030eb20943569b31981d9efddc369145b5926663a38a1f5a5d3fcdaae5f6

Download Submit
C:\Users\Admin\AppData\Roaming\Ysno\hyci.exe
Filesize
286KB

MD5
e90d94ab94dad5ae455df550727b800a

SHA1
f0f1b587202326c1902335e0ff841d5d7d5710c0

SHA256
63fa815fc072f049b38ce642aafd21082ac7da7dc1ea44c2b1c6670cda8f5d9e

SHA512
877b2b783c3c84d6e9a31c3a296092850d09eee7e977d7a9c12025912e076e9afdcd030eb20943569b31981d9efddc369145b5926663a38a1f5a5d3fcdaae5f6

Download Submit
\Users\Admin\AppData\Roaming\Ysno\hyci.exe
Filesize
286KB

MD5
e90d94ab94dad5ae455df550727b800a

SHA1
f0f1b587202326c1902335e0ff841d5d7d5710c0

SHA256
63fa815fc072f049b38ce642aafd21082ac7da7dc1ea44c2b1c6670cda8f5d9e

SHA512
877b2b783c3c84d6e9a31c3a296092850d09eee7e977d7a9c12025912e076e9afdcd030eb20943569b31981d9efddc369145b5926663a38a1f5a5d3fcdaae5f6

Download Submit
\Users\Admin\AppData\Roaming\Ysno\hyci.exe
Filesize
286KB

MD5
e90d94ab94dad5ae455df550727b800a

SHA1
f0f1b587202326c1902335e0ff841d5d7d5710c0

SHA256
63fa815fc072f049b38ce642aafd21082ac7da7dc1ea44c2b1c6670cda8f5d9e

SHA512
877b2b783c3c84d6e9a31c3a296092850d09eee7e977d7a9c12025912e076e9afdcd030eb20943569b31981d9efddc369145b5926663a38a1f5a5d3fcdaae5f6

Download Submit
memory/344-111-0x0000000003D00000-0x0000000003D39000-memory.dmp

Filesize
228KB

Download
memory/344-110-0x0000000003D00000-0x0000000003D39000-memory.dmp

Filesize
228KB

Download
memory/344-109-0x0000000003D00000-0x0000000003D39000-memory.dmp

Filesize
228KB

Download
memory/344-88-0x000007FEFC2B1000-0x000007FEFC2B3000-memory.dmp

Filesize
8KB

Download
memory/344-89-0x000007FEF6CD1000-0x000007FEF6CD3000-memory.dmp

Filesize
8KB

Download
memory/344-90-0x0000000002020000-0x0000000002030000-memory.dmp

Filesize
64KB

Download
memory/344-96-0x0000000002430000-0x0000000002440000-memory.dmp

Filesize
64KB

Download
memory/344-108-0x0000000003D00000-0x0000000003D39000-memory.dmp

Filesize
228KB

Download
memory/1116-63-0x0000000001BF0000-0x0000000001C29000-memory.dmp

Filesize
228KB

Download
memory/1116-68-0x0000000001BF0000-0x0000000001C29000-memory.dmp

Filesize
228KB

Download
memory/1116-67-0x0000000001BF0000-0x0000000001C29000-memory.dmp

Filesize
228KB

Download
memory/1116-66-0x0000000001BF0000-0x0000000001C29000-memory.dmp

Filesize
228KB

Download
memory/1116-65-0x0000000001BF0000-0x0000000001C29000-memory.dmp

Filesize
228KB

Download
memory/1168-71-0x0000000001AF0000-0x0000000001B29000-memory.dmp

Filesize
228KB

Download
memory/1168-72-0x0000000001AF0000-0x0000000001B29000-memory.dmp

Filesize
228KB

Download
memory/1168-74-0x0000000001AF0000-0x0000000001B29000-memory.dmp

Filesize
228KB

Download
memory/1168-73-0x0000000001AF0000-0x0000000001B29000-memory.dmp

Filesize
228KB

Download
memory/1224-80-0x0000000002230000-0x0000000002269000-memory.dmp

Filesize
228KB

Download
memory/1224-79-0x0000000002230000-0x0000000002269000-memory.dmp

Filesize
228KB

Download
memory/1224-78-0x0000000002230000-0x0000000002269000-memory.dmp

Filesize
228KB

Download
memory/1224-77-0x0000000002230000-0x0000000002269000-memory.dmp

Filesize
228KB

Download
memory/1484-103-0x0000000000480000-0x00000000004D4000-memory.dmp

Filesize
336KB

Download
memory/1484-112-0x0000000000400000-0x000000000044A000-memory.dmp

Filesize
296KB

Download
memory/1484-59-0x0000000000000000-mapping.dmp

Download
memory/1484-104-0x0000000000400000-0x000000000044A000-memory.dmp

Filesize
296KB

Download
memory/1768-125-0x0000000000050000-0x0000000000089000-memory.dmp

Filesize
228KB

Download
memory/1768-131-0x0000000000050000-0x0000000000089000-memory.dmp

Filesize
228KB

Download
memory/1768-249-0x0000000000050000-0x0000000000089000-memory.dmp

Filesize
228KB

Download
memory/1768-133-0x0000000000050000-0x0000000000089000-memory.dmp

Filesize
228KB

Download
memory/1768-129-0x0000000000050000-0x0000000000089000-memory.dmp

Filesize
228KB

Download
memory/1768-127-0x0000000000050000-0x0000000000089000-memory.dmp

Filesize
228KB

Download
memory/1768-123-0x0000000000050000-0x0000000000089000-memory.dmp

Filesize
228KB

Download
memory/1768-121-0x00000000000636E2-mapping.dmp

Download
memory/1768-120-0x0000000000050000-0x0000000000089000-memory.dmp

Filesize
228KB

Download
memory/1768-119-0x0000000000050000-0x0000000000089000-memory.dmp

Filesize
228KB

Download
memory/1768-116-0x0000000000050000-0x0000000000089000-memory.dmp

Filesize
228KB

Download
memory/1768-118-0x0000000000050000-0x0000000000089000-memory.dmp

Filesize
228KB

Download
memory/2016-86-0x0000000001E70000-0x0000000001EA9000-memory.dmp

Filesize
228KB

Download
memory/2016-84-0x0000000001E70000-0x0000000001EA9000-memory.dmp

Filesize
228KB

Download
memory/2016-56-0x0000000000400000-0x000000000044A000-memory.dmp

Filesize
296KB

Download
memory/2016-85-0x0000000001E70000-0x0000000001EA9000-memory.dmp

Filesize
228KB

Download
memory/2016-83-0x0000000001E70000-0x0000000001EA9000-memory.dmp

Filesize
228KB

Download
memory/2016-54-0x0000000076AE1000-0x0000000076AE3000-memory.dmp

Filesize
8KB

Download
memory/2016-113-0x0000000001E70000-0x0000000001EBA000-memory.dmp

Filesize
296KB

Download
memory/2016-87-0x0000000001E70000-0x0000000001EA9000-memory.dmp

Filesize
228KB

Download
memory/2016-105-0x0000000001E70000-0x0000000001EBA000-memory.dmp

Filesize
296KB

Download
memory/2016-157-0x0000000000400000-0x000000000044A000-memory.dmp

Filesize
296KB

Download
memory/2016-159-0x0000000001E70000-0x0000000001EA9000-memory.dmp

Filesize
228KB

Download
memory/2016-102-0x0000000000400000-0x000000000044A000-memory.dmp

Filesize
296KB

Download
memory/2016-55-0x0000000001EC0000-0x0000000001F14000-memory.dmp

Filesize
336KB

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Analysis

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MITRE ATT&CK Matrix ATT&CK v6

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