67b3d7b75c4ed4b9a80961e9ce6917f01a699db93800302d0872514eaa6a42a8

Analysis

max time kernel
91s
max time network
132s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
01/12/2022, 03:45

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General

Target

67b3d7b75c4ed4b9a80961e9ce6917f01a699db93800302d0872514eaa6a42a8.dll
Size

237KB
MD5

1ad0394292c17ab32630fcd65ac89221
SHA1

6a1f8e17f2db879376b90a683eb382dfad7b07f4
SHA256

67b3d7b75c4ed4b9a80961e9ce6917f01a699db93800302d0872514eaa6a42a8
SHA512

0d5007089d918b6e2613e5addb4bfcc2cf087b3ffa3ca6bfcb9b33bddadefe7a8df42a76c29bd7b4e9aadcb50777836f15a8cb02c1f09e8e731981433460d897
SSDEEP

1536:ah3I3Y/OmZWgu8ghI8ANLPc6JTLxvolgBwjhIHOiAwKhgOeS/5/IhnGcG7wkI3:ah3PDghILPcAvoawjXbwPSx/IuwkO

Score

10^/10

persistence

Malware Config

Signatures

Adds autorun key to be loaded by Explorer.exe on startup 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\ShellServiceObjectDelayLoad	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\ShellServiceObjectDelayLoad\vup = "{18bfdbe1-9037-e58c-a148-903753691968}"	rundll32.exe

Loads dropped DLL 2 IoCs

pid	Process
764	rundll32.exe
764	rundll32.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\ihc.dll	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\ihc.dll	rundll32.exe
File created	C:\Windows\SysWOW64\uto.dll	rundll32.exe
File created	C:\Windows\SysWOW64\qpk.dll	rundll32.exe

Modifies registry class 5 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{18bfdbe1-9037-e58c-a148-903753691968}\	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{18bfdbe1-9037-e58c-a148-903753691968}\InprocServer32	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{18bfdbe1-9037-e58c-a148-903753691968}\InprocServer32\ = "C:\\Windows\\SysWow64\\qpk.dll"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{18bfdbe1-9037-e58c-a148-903753691968}\InprocServer32\ThreadingModel = "Apartment"	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{18bfdbe1-9037-e58c-a148-903753691968}	rundll32.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
764	rundll32.exe
764	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	764	rundll32.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
764	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1400 wrote to memory of 764	1400	rundll32.exe	80
PID 1400 wrote to memory of 764	1400	rundll32.exe	80
PID 1400 wrote to memory of 764	1400	rundll32.exe	80

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\67b3d7b75c4ed4b9a80961e9ce6917f01a699db93800302d0872514eaa6a42a8.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1400
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\67b3d7b75c4ed4b9a80961e9ce6917f01a699db93800302d0872514eaa6a42a8.dll,#1
  2⤵
  - Adds autorun key to be loaded by Explorer.exe on startup
  - Loads dropped DLL
  - Drops file in System32 directory
  - Modifies registry class
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:764

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\SysWOW64\ihc.dll

Filesize
478KB

MD5
e99416267b61f52fa5ab994019efd359

SHA1
86d31eae707db7fe51d2556394fcf0e8e9f6b0fd

SHA256
768c286674371564b5e6095edb56e0a4231f341be895da69cfccca5160029774

SHA512
0a1c7579a9c787c2c1bef35f0660e72e74b42824e14ebea63b87ed25ddaf107e3746567bb431cab41a2f6719fad2c22d96e0715a1fe085d75805d7d66f7f05ae

Download Submit
C:\Windows\SysWOW64\uto.dll

Filesize
625KB

MD5
eccf28d7e5ccec24119b88edd160f8f4

SHA1
98509587a3d37a20b56b50fd57f823a1691a034c

SHA256
820c83c0533cfce2928e29edeaf6c255bc19ac9718b25a5656d99ffac30a03d6

SHA512
c1c94bbb781625b2317f0a8178d3a10d891fb71bca8f82cd831c484e8ab125301b82a14fe2ff070dc99a496cc00234300fa5536401018c40d49d44ae89409670

Download Submit
memory/764-135-0x0000000000400000-0x0000000000445000-memory.dmp

Filesize
276KB

Download
memory/764-136-0x0000000000400000-0x0000000000445000-memory.dmp

Filesize
276KB

Download