e965571d6d96c552d28c34ca8793bc06561ed8d853ac724ce9c63ccf1ab4a172

General

Target

045634f9dd4eaf2f5bccbebca37faa8f.dll
Size

100KB
MD5

045634f9dd4eaf2f5bccbebca37faa8f
SHA1

afd1b0ea0445c1a1bb74fd9c5b823f4ca4f4ae9a
SHA256

e965571d6d96c552d28c34ca8793bc06561ed8d853ac724ce9c63ccf1ab4a172
SHA512

8cad475c7042b9345e000527e2809e2d45f3ae1afd765471dc7843c433e9172985bf76af6876af72d86f40e8710aede8af237ca55a2f4fad198d9bc321700520
SSDEEP

3072:EhaMqdtNFMQb7BBWfGtTcTyYcXAkomqbIy:gaMC77BpU3mqIy

Score

8^/10

adware persistence stealer upx

Malware Config

Signatures

Modifies AppInit DLL entries 2 TTPs
persistence

Registry Run Keys / Startup Folder
T1547.001

Modify Registry
T1112

Loads dropped DLL 1 IoCs

pid	Process
4788	rundll32.exe

UPX packed file 8 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/976-2-0x0000000010000000-0x0000000010040000-memory.dmp	upx
behavioral2/memory/976-3-0x0000000010000000-0x0000000010040000-memory.dmp	upx
behavioral2/memory/976-4-0x0000000010000000-0x0000000010040000-memory.dmp	upx
behavioral2/memory/976-5-0x0000000010000000-0x0000000010040000-memory.dmp	upx
behavioral2/memory/976-7-0x0000000010000000-0x0000000010040000-memory.dmp	upx
behavioral2/memory/4788-14-0x0000000010000000-0x0000000010040000-memory.dmp	upx
behavioral2/memory/4788-12-0x0000000010000000-0x0000000010040000-memory.dmp	upx
behavioral2/memory/4788-15-0x0000000010000000-0x0000000010040000-memory.dmp	upx

Installs/modifies Browser Helper Object 2 TTPs 4 IoCs

BHOs are DLL modules which act as plugins for Internet Explorer.

stealer adware

Modify Registry

T1112

Browser Extensions

T1176

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{965c1a60-5e57-43c4-a90f-7cfabe756596}\ = "{695657eb-afc7-f09a-4c34-75e506a1c569}"	rundll32.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{1FD49718-1D00-4B19-AF5F-070AF6D5D54C}	rundll32.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{31D09BA0-12F5-4CCE-BE8A-2923E76605DA}	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{965c1a60-5e57-43c4-a90f-7cfabe756596}	rundll32.exe

Drops file in System32 directory 2 IoCs

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

Modifies registry class 23 IoCs

description	ioc	Process
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1FD49718-1D00-4B19-AF5F-070AF6D5D54C}\Implemented Categories	rundll32.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{31D09BA0-12F5-4CCE-BE8A-2923E76605DA}\VersionIndependentProgID	rundll32.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{31D09BA0-12F5-4CCE-BE8A-2923E76605DA}\TypeLib	rundll32.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{31D09BA0-12F5-4CCE-BE8A-2923E76605DA}\InprocServer32	rundll32.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{31D09BA0-12F5-4CCE-BE8A-2923E76605DA}\Implemented Categories\{59FB2056-D625-48D0-A944-1A85B5AB2640}	rundll32.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{31D09BA0-12F5-4CCE-BE8A-2923E76605DA}\Implemented Categories	rundll32.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{31D09BA0-12F5-4CCE-BE8A-2923E76605DA}	rundll32.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1FD49718-1D00-4B19-AF5F-070AF6D5D54C}\InprocServer32	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{965c1a60-5e57-43c4-a90f-7cfabe756596}	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node	rundll32.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{31D09BA0-12F5-4CCE-BE8A-2923E76605DA}\Version	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{965c1a60-5e57-43c4-a90f-7cfabe756596}\InprocServer32	rundll32.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1FD49718-1D00-4B19-AF5F-070AF6D5D54C}\Implemented Categories\{59FB2056-D625-48D0-A944-1A85B5AB2640}	rundll32.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1FD49718-1D00-4B19-AF5F-070AF6D5D54C}\TypeLib	rundll32.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1FD49718-1D00-4B19-AF5F-070AF6D5D54C}\Programmable	rundll32.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1FD49718-1D00-4B19-AF5F-070AF6D5D54C}\ProgID	rundll32.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{31D09BA0-12F5-4CCE-BE8A-2923E76605DA}\Programmable	rundll32.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{31D09BA0-12F5-4CCE-BE8A-2923E76605DA}\ProgID	rundll32.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1FD49718-1D00-4B19-AF5F-070AF6D5D54C}\VersionIndependentProgID	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{965c1a60-5e57-43c4-a90f-7cfabe756596}\InprocServer32\ = "C:\\Windows\\SysWow64\\nroljp.dll"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{965c1a60-5e57-43c4-a90f-7cfabe756596}\InprocServer32\ThreadingModel = "free"	rundll32.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1FD49718-1D00-4B19-AF5F-070AF6D5D54C}	rundll32.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3496 wrote to memory of 976	3496	rundll32.exe	87
PID 3496 wrote to memory of 976	3496	rundll32.exe	87
PID 3496 wrote to memory of 976	3496	rundll32.exe	87
PID 976 wrote to memory of 4788	976	rundll32.exe	90
PID 976 wrote to memory of 4788	976	rundll32.exe	90
PID 976 wrote to memory of 4788	976	rundll32.exe	90

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\045634f9dd4eaf2f5bccbebca37faa8f.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3496
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\045634f9dd4eaf2f5bccbebca37faa8f.dll,#1
  2⤵
  - Drops file in System32 directory
  - Suspicious use of WriteProcessMemory
  PID:976
- - C:\Windows\SysWOW64\rundll32.exe
    rundll32.exe "C:\Windows\system32\nroljp.dll",i
    3⤵
    - Loads dropped DLL
    - Installs/modifies Browser Helper Object
    - Modifies registry class
    PID:4788

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

Browser Extensions

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

2

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\SysWOW64\nroljp.dll

Filesize
100KB

MD5
045634f9dd4eaf2f5bccbebca37faa8f

SHA1
afd1b0ea0445c1a1bb74fd9c5b823f4ca4f4ae9a

SHA256
e965571d6d96c552d28c34ca8793bc06561ed8d853ac724ce9c63ccf1ab4a172

SHA512
8cad475c7042b9345e000527e2809e2d45f3ae1afd765471dc7843c433e9172985bf76af6876af72d86f40e8710aede8af237ca55a2f4fad198d9bc321700520

Download Submit
memory/976-0-0x0000000010000000-0x0000000010040000-memory.dmp

Filesize
256KB

Download
memory/976-2-0x0000000010000000-0x0000000010040000-memory.dmp

Filesize
256KB

Download
memory/976-3-0x0000000010000000-0x0000000010040000-memory.dmp

Filesize
256KB

Download
memory/976-1-0x0000000000FA0000-0x0000000000FB7000-memory.dmp

Filesize
92KB

Download
memory/976-4-0x0000000010000000-0x0000000010040000-memory.dmp

Filesize
256KB

Download
memory/976-5-0x0000000010000000-0x0000000010040000-memory.dmp

Filesize
256KB

Download
memory/976-7-0x0000000010000000-0x0000000010040000-memory.dmp

Filesize
256KB

Download
memory/4788-14-0x0000000010000000-0x0000000010040000-memory.dmp

Filesize
256KB

Download
memory/4788-13-0x0000000000E90000-0x0000000000E91000-memory.dmp

Filesize
4KB

Download
memory/4788-12-0x0000000010000000-0x0000000010040000-memory.dmp

Filesize
256KB

Download
memory/4788-15-0x0000000010000000-0x0000000010040000-memory.dmp

Filesize
256KB

Download

Analysis

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