b99b94f057a87daba97b296ee4c418e842910307054d9f9af026fe784af2077d

Analysis

max time kernel
92s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
03/10/2022, 13:43 UTC

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General

Target

b99b94f057a87daba97b296ee4c418e842910307054d9f9af026fe784af2077d.dll
Size

236KB
MD5

60254ff672dc9c0a744661f7709296d8
SHA1

a4f603432f48fe9e6cf25bf9669c382ce0d4f402
SHA256

b99b94f057a87daba97b296ee4c418e842910307054d9f9af026fe784af2077d
SHA512

e77d13d9a8676d51a4b59a9723a447e7fecefab6f8ea787ece755dbb02db8eeddeee1c7e45db4ce210c47f7ff40de0d1ff46a7f696aa50a4b6684dc8a1368ef4
SSDEEP

1536:1dKaTHN2ymZ0ofa5uQm4V7HG8ldINh+RhFtFftCgpcGO5lPf/XG8GmGwktbR:1Y4tIQG8XAmbFfaGc1fawk1R

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
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\ShellServiceObjectDelayLoad\yjinmnhay = "{8feb6b38-0763-5cb8-1874-0763e3b0417b}"	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\ShellServiceObjectDelayLoad	rundll32.exe

Loads dropped DLL 1 IoCs

pid	Process
1104	rundll32.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\lwvazaunl.dll	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\lwvazaunl.dll	rundll32.exe
File created	C:\Windows\SysWOW64\tedihicvt.dll	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\tedihicvt.dll	rundll32.exe

Modifies registry class 5 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{8feb6b38-0763-5cb8-1874-0763e3b0417b}\InprocServer32\ = "C:\\Windows\\SysWow64\\tedihicvt.dll"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{8feb6b38-0763-5cb8-1874-0763e3b0417b}\InprocServer32\ThreadingModel = "Apartment"	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{8feb6b38-0763-5cb8-1874-0763e3b0417b}	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{8feb6b38-0763-5cb8-1874-0763e3b0417b}\	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{8feb6b38-0763-5cb8-1874-0763e3b0417b}\InprocServer32	rundll32.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1104	rundll32.exe
1104	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1104	rundll32.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1104	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1216 wrote to memory of 1104	1216	rundll32.exe	81
PID 1216 wrote to memory of 1104	1216	rundll32.exe	81
PID 1216 wrote to memory of 1104	1216	rundll32.exe	81

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\b99b94f057a87daba97b296ee4c418e842910307054d9f9af026fe784af2077d.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1216
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\b99b94f057a87daba97b296ee4c418e842910307054d9f9af026fe784af2077d.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:1104

Network

No results found

209.197.3.8:80

322 B
7
209.197.3.8:80

322 B
7
209.197.3.8:80

260 B
5

No results found

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\lwvazaunl.dll

Filesize
478KB

MD5
e99416267b61f52fa5ab994019efd359

SHA1
86d31eae707db7fe51d2556394fcf0e8e9f6b0fd

SHA256
768c286674371564b5e6095edb56e0a4231f341be895da69cfccca5160029774

SHA512
0a1c7579a9c787c2c1bef35f0660e72e74b42824e14ebea63b87ed25ddaf107e3746567bb431cab41a2f6719fad2c22d96e0715a1fe085d75805d7d66f7f05ae

Download Submit
memory/1104-133-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download
memory/1104-135-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download