61412215fb26d53852080768f435afcfa050319f0431cc1c4f0ac6e203eeb5e2

Analysis

max time kernel
121s
max time network
126s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
05/06/2024, 02:01

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General

Target
$_2_/BDDLBHO.dll
Size 199KB
Sample240605-cf2ylabg45
SHA256 20a792f1c76588866a9e0667c4d74e4c8123a1a55eb0956b93fcdf3109c153e8
MD5 0f35053b980e7a3d93018c10928dd3ba
SHA1 28b6a54b5e0bb10b5bd24300f6f49090cef9c582
SHA512 491e084d130342f66071b279f904e7444e5c6363094025a11c010664c366420b23397cc19afc9a05f4c1209df709ab3ec4485278c559f2029cf77808c235e71e
SSDEEP 3072:9ncF6HYSDP6Aow6Dl6zXHyvuV3vQxKVwt9ow2G:1ceY2Pp6hkHyw3YxKVwoXG
MD5 SHA1 SHA512 SSDEEP

Score

6^/10

adware stealer

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\{88096372-571E-45A5-8425-A63E5EE37B4C}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{88096372-571E-45A5-8425-A63E5EE37B4C}\ = "Baidu MiniDownloader Browser Helper"	regsvr32.exe

Modifies registry class 51 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\BDDLBHO.CloudCtl.1\CLSID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\BDDLBHO.CloudCtl\CurVer\ = "BDDLBHO.CloudCtl.1"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{88096372-571E-45A5-8425-A63E5EE37B4C}\VersionIndependentProgID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{1C7FB80F-D97E-4130-8CC8-75231844E132}\1.0	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{1C7FB80F-D97E-4130-8CC8-75231844E132}\1.0\HELPDIR	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\AppID\{C1CA1971-84DF-4FEC-AF76-3C3FDB6226E6}\ = "BDDLBHO"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\BDDLBHO.CloudCtl\CurVer	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{1C7FB80F-D97E-4130-8CC8-75231844E132}\1.0\FLAGS\ = "0"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{EBB8D240-4963-4069-8892-683994A6F8B1}\ = "ICloudCtl"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{EBB8D240-4963-4069-8892-683994A6F8B1}\TypeLib	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{EBB8D240-4963-4069-8892-683994A6F8B1}\TypeLib\ = "{1C7FB80F-D97E-4130-8CC8-75231844E132}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\BDDLBHO.CloudCtl.1\CLSID\ = "{88096372-571E-45A5-8425-A63E5EE37B4C}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\BDDLBHO.CloudCtl\CLSID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{88096372-571E-45A5-8425-A63E5EE37B4C}\ProgID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{88096372-571E-45A5-8425-A63E5EE37B4C}\VersionIndependentProgID\ = "BDDLBHO.CloudCtl"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{1C7FB80F-D97E-4130-8CC8-75231844E132}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{1C7FB80F-D97E-4130-8CC8-75231844E132}\1.0\0\win32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\$_2_\\BDDLBHO.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{EBB8D240-4963-4069-8892-683994A6F8B1}\ = "ICloudCtl"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{EBB8D240-4963-4069-8892-683994A6F8B1}\TypeLib\Version = "1.0"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\AppID\BDDLBHO.DLL\AppID = "{C1CA1971-84DF-4FEC-AF76-3C3FDB6226E6}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{88096372-571E-45A5-8425-A63E5EE37B4C}\InprocServer32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{88096372-571E-45A5-8425-A63E5EE37B4C}\InprocServer32\ThreadingModel = "Apartment"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{EBB8D240-4963-4069-8892-683994A6F8B1}\TypeLib\ = "{1C7FB80F-D97E-4130-8CC8-75231844E132}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{88096372-571E-45A5-8425-A63E5EE37B4C}\ = "Baidu MiniDownloader Browser Helper"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{88096372-571E-45A5-8425-A63E5EE37B4C}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{88096372-571E-45A5-8425-A63E5EE37B4C}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\$_2_\\BDDLBHO.dll"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{1C7FB80F-D97E-4130-8CC8-75231844E132}\1.0\FLAGS	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{1C7FB80F-D97E-4130-8CC8-75231844E132}\1.0\0\win32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\AppID\{C1CA1971-84DF-4FEC-AF76-3C3FDB6226E6}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\BDDLBHO.CloudCtl\CLSID\ = "{88096372-571E-45A5-8425-A63E5EE37B4C}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{88096372-571E-45A5-8425-A63E5EE37B4C}\Programmable	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{88096372-571E-45A5-8425-A63E5EE37B4C}\TypeLib\ = "{1C7FB80F-D97E-4130-8CC8-75231844E132}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\AppID\BDDLBHO.DLL	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{EBB8D240-4963-4069-8892-683994A6F8B1}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{EBB8D240-4963-4069-8892-683994A6F8B1}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\BDDLBHO.CloudCtl\ = "Baidu MiniDownloader Browser Helper"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{1C7FB80F-D97E-4130-8CC8-75231844E132}\1.0\HELPDIR\	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{EBB8D240-4963-4069-8892-683994A6F8B1}\TypeLib	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\BDDLBHO.CloudCtl.1\ = "Baidu MiniDownloader Browser Helper"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{EBB8D240-4963-4069-8892-683994A6F8B1}\ProxyStubClsid32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{EBB8D240-4963-4069-8892-683994A6F8B1}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{EBB8D240-4963-4069-8892-683994A6F8B1}\TypeLib\Version = "1.0"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\BDDLBHO.CloudCtl	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{88096372-571E-45A5-8425-A63E5EE37B4C}\AppID = "{C1CA1971-84DF-4FEC-AF76-3C3FDB6226E6}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{1C7FB80F-D97E-4130-8CC8-75231844E132}\1.0\ = "BDDLBHO 1.0 Type Library"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{EBB8D240-4963-4069-8892-683994A6F8B1}\ProxyStubClsid32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\BDDLBHO.CloudCtl.1	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{88096372-571E-45A5-8425-A63E5EE37B4C}\TypeLib	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{88096372-571E-45A5-8425-A63E5EE37B4C}\ProgID\ = "BDDLBHO.CloudCtl.1"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{1C7FB80F-D97E-4130-8CC8-75231844E132}\1.0\0	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{EBB8D240-4963-4069-8892-683994A6F8B1}	regsvr32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2988 wrote to memory of 2488	2988	regsvr32.exe	28
PID 2988 wrote to memory of 2488	2988	regsvr32.exe	28
PID 2988 wrote to memory of 2488	2988	regsvr32.exe	28
PID 2988 wrote to memory of 2488	2988	regsvr32.exe	28
PID 2988 wrote to memory of 2488	2988	regsvr32.exe	28
PID 2988 wrote to memory of 2488	2988	regsvr32.exe	28
PID 2988 wrote to memory of 2488	2988	regsvr32.exe	28

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\$_2_\BDDLBHO.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:2988
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\$_2_\BDDLBHO.dll
  2⤵
  - Installs/modifies Browser Helper Object
  - Modifies registry class
  PID:2488

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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