93e7571f4d350696bc41a8d9e5f9b502ac419531f1aec9ebcc284a33cc3debb9

Analysis

max time kernel
183s
max time network
191s
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 00:35

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General

Target

93e7571f4d350696bc41a8d9e5f9b502ac419531f1aec9ebcc284a33cc3debb9.dll
Size

236KB
MD5

93c19f97cd8c3f3571de7aad1b7706bc
SHA1

c6345ea677459d82df91a40485877509ff3db3cd
SHA256

93e7571f4d350696bc41a8d9e5f9b502ac419531f1aec9ebcc284a33cc3debb9
SHA512

5ca54e639686923240dce5282c83f0941b15ed82672d32ab5ac540fc67ff44fb91a166b95fb783b37b7c8bd03fcb9e2627c3209fc2bb66ffdb8034c1a6d128c7
SSDEEP

1536:Iguo2K86vta10RJQYPIHL+D5IWhxRh/Ci4ucg3/+k5ltr+DRPG8Gz7wk+cQvMT:Go256vS0RJAL+lHPKi40+66iwkD0U

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\bzrwz = "{bd9c34d9-3514-8a69-4625-3514bc51eaac}"	rundll32.exe

Loads dropped DLL 1 IoCs

pid	Process
2016	rundll32.exe

Drops file in System32 directory 4 IoCs

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

Modifies registry class 5 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{bd9c34d9-3514-8a69-4625-3514bc51eaac}	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{bd9c34d9-3514-8a69-4625-3514bc51eaac}\	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{bd9c34d9-3514-8a69-4625-3514bc51eaac}\InprocServer32	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{bd9c34d9-3514-8a69-4625-3514bc51eaac}\InprocServer32\ = "C:\\Windows\\SysWow64\\wumru.dll"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{bd9c34d9-3514-8a69-4625-3514bc51eaac}\InprocServer32\ThreadingModel = "Apartment"	rundll32.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2016	rundll32.exe
2016	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2016	rundll32.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2016	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4596 wrote to memory of 2016	4596	rundll32.exe	80
PID 4596 wrote to memory of 2016	4596	rundll32.exe	80
PID 4596 wrote to memory of 2016	4596	rundll32.exe	80

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\93e7571f4d350696bc41a8d9e5f9b502ac419531f1aec9ebcc284a33cc3debb9.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4596
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\93e7571f4d350696bc41a8d9e5f9b502ac419531f1aec9ebcc284a33cc3debb9.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:2016

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\omejm.dll

Filesize
478KB

MD5
e99416267b61f52fa5ab994019efd359

SHA1
86d31eae707db7fe51d2556394fcf0e8e9f6b0fd

SHA256
768c286674371564b5e6095edb56e0a4231f341be895da69cfccca5160029774

SHA512
0a1c7579a9c787c2c1bef35f0660e72e74b42824e14ebea63b87ed25ddaf107e3746567bb431cab41a2f6719fad2c22d96e0715a1fe085d75805d7d66f7f05ae

Download Submit
memory/2016-132-0x0000000000000000-mapping.dmp

Download
memory/2016-133-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download
memory/2016-135-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download