1257eb42368501130beff8430eb2ddfbf957838f94b1588d857c4ce17040c89c

Analysis

max time kernel
120s
max time network
123s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
03/10/2024, 15:07

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General

Target

niebho.dll
Size

342KB
MD5

35c2f42baafeec096c05f8eaf4f90970
SHA1

12879beacc1ba299d94fcf8d974728414c4a8ea6
SHA256

2f716bfe44872120b6209615b274be513460e1323c525b27640eedfa4ebb6723
SHA512

4576b711c2c24113ac7f42f3e60efd9c63984de053647257463bec5d984fbfc1da20cb25892c8453dfafcb47201a96218595e0f9baf6da9b9f02d5d7cced12e5
SSDEEP

6144:AYH33b6woZYNfw2e2m/FepkmqzEYNk3KwKYlA0roOI3XDbr6j9hRjZacq:AI3b6wx122m/Fepkmqz9NaKwKX0xI3T0

Score

6^/10

adware discovery stealer upx

Malware Config

Signatures

Installs/modifies Browser Helper Object 2 TTPs 2 IoCs

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

stealer adware

Modify Registry

T1112

Browser Extensions

T1176

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{14ED2E3F-CC38-4FDC-82FB-951D45A09F77}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{14ED2E3F-CC38-4FDC-82FB-951D45A09F77}\	regsvr32.exe

UPX packed file 1 IoCs

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

upx

resource	yara_rule
behavioral17/memory/1904-0-0x00000000005C0000-0x00000000006BA000-memory.dmp	upx

System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	regsvr32.exe

Modifies Internet Explorer settings 1 TTPs 2 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000\Software\Microsoft\Internet Explorer\Main	regsvr32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000\Software\Microsoft\Internet Explorer\Main\Enable Browser Extensions = "yes"	regsvr32.exe

Modifies registry class 6 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{14ED2E3F-CC38-4FDC-82FB-951D45A09F77}\InprocServer32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{14ED2E3F-CC38-4FDC-82FB-951D45A09F77}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\niebho.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{14ED2E3F-CC38-4FDC-82FB-951D45A09F77}\InprocServer32\ThreadingModel = "Apartment"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{14ED2E3F-CC38-4FDC-82FB-951D45A09F77}\InProcServer32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{14ED2E3F-CC38-4FDC-82FB-951D45A09F77}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{14ED2E3F-CC38-4FDC-82FB-951D45A09F77}\ = "IBHO"	regsvr32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2520 wrote to memory of 1904	2520	regsvr32.exe	30
PID 2520 wrote to memory of 1904	2520	regsvr32.exe	30
PID 2520 wrote to memory of 1904	2520	regsvr32.exe	30
PID 2520 wrote to memory of 1904	2520	regsvr32.exe	30
PID 2520 wrote to memory of 1904	2520	regsvr32.exe	30
PID 2520 wrote to memory of 1904	2520	regsvr32.exe	30
PID 2520 wrote to memory of 1904	2520	regsvr32.exe	30

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\niebho.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:2520
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\niebho.dll
  2⤵
  - Installs/modifies Browser Helper Object
  - System Location Discovery: System Language Discovery
  - Modifies Internet Explorer settings
  - Modifies registry class
  PID:1904

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Browser Extensions

T1176

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/1904-0-0x00000000005C0000-0x00000000006BA000-memory.dmp

Filesize
1000KB

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads