cb5c000894068cf4b946ec2a559665480975b0bc078b244cefdd357391a60475

Analysis

max time kernel
119s
max time network
125s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
29/01/2024, 07:04

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General

Target

7f330d0bf00130ab6acc7e43722d309c.dll
Size

164KB
MD5

7f330d0bf00130ab6acc7e43722d309c
SHA1

9b5f76c2aca0db42d5bc11f51895d16e6df92244
SHA256

cb5c000894068cf4b946ec2a559665480975b0bc078b244cefdd357391a60475
SHA512

670cde96db65cc61028c64e94b031cc55d73e191f4c258ac0102f72a7fc7753b3ccbd0ec9f18c1e7b233e73157e759fb01b8077901e2d70f732c8b8648243c18
SSDEEP

3072:C6rX/TpZOzUimuWeBW8rFvl2mjEajZ1POMvv6p2CWc+E:1vTpZOVd08Z4H+vOMXe2CQ

Score

6^/10

adware stealer

Malware Config

Signatures

Installs/modifies Browser Helper Object 2 TTPs 3 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\{830C615B-3B4F-3816-B358-D2C08E3B5A28}	regsvr32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{830C615B-3B4F-3816-B358-D2C08E3B5A28}\IExplore = "1"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects	regsvr32.exe

Modifies registry class 29 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{BFC21AB8-07C0-33F1-8F0F-7781989B1DC9}\1.0\0\win32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\7f330d0bf00130ab6acc7e43722d309c.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{BFC21AB8-07C0-33F1-8F0F-7781989B1DC9}\1.0\HELPDIR\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{5E2ACEE6-F6CF-33E9-9639-D290DBAC1869}\TypeLib\ = "{BFC21AB8-07C0-33F1-8F0F-7781989B1DC9}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{BFC21AB8-07C0-33F1-8F0F-7781989B1DC9}\1.0\ = "LIB"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{BFC21AB8-07C0-33F1-8F0F-7781989B1DC9}\1.0\0	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{BFC21AB8-07C0-33F1-8F0F-7781989B1DC9}\1.0\0\win32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{5E2ACEE6-F6CF-33E9-9639-D290DBAC1869}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{5E2ACEE6-F6CF-33E9-9639-D290DBAC1869}\ProxyStubClsid32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{5E2ACEE6-F6CF-33E9-9639-D290DBAC1869}\ = "ID"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{830C615B-3B4F-3816-B358-D2C08E3B5A28}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\7f330d0bf00130ab6acc7e43722d309c.dll"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{5E2ACEE6-F6CF-33E9-9639-D290DBAC1869}\ProxyStubClsid32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{BFC21AB8-07C0-33F1-8F0F-7781989B1DC9}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{5E2ACEE6-F6CF-33E9-9639-D290DBAC1869}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{830C615B-3B4F-3816-B358-D2C08E3B5A28}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{830C615B-3B4F-3816-B358-D2C08E3B5A28}\InprocServer32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{5E2ACEE6-F6CF-33E9-9639-D290DBAC1869}\TypeLib\ = "{BFC21AB8-07C0-33F1-8F0F-7781989B1DC9}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{5E2ACEE6-F6CF-33E9-9639-D290DBAC1869}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{5E2ACEE6-F6CF-33E9-9639-D290DBAC1869}\TypeLib\Version = "1.0"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{830C615B-3B4F-3816-B358-D2C08E3B5A28}\ = "D"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{830C615B-3B4F-3816-B358-D2C08E3B5A28}\InprocServer32\ThreadingModel = "Apartment"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{5E2ACEE6-F6CF-33E9-9639-D290DBAC1869}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{5E2ACEE6-F6CF-33E9-9639-D290DBAC1869}\TypeLib	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{BFC21AB8-07C0-33F1-8F0F-7781989B1DC9}\1.0	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{BFC21AB8-07C0-33F1-8F0F-7781989B1DC9}\1.0\FLAGS	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{BFC21AB8-07C0-33F1-8F0F-7781989B1DC9}\1.0\FLAGS\ = "0"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{5E2ACEE6-F6CF-33E9-9639-D290DBAC1869}\ = "ID"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{5E2ACEE6-F6CF-33E9-9639-D290DBAC1869}\TypeLib	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{5E2ACEE6-F6CF-33E9-9639-D290DBAC1869}\TypeLib\Version = "1.0"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{BFC21AB8-07C0-33F1-8F0F-7781989B1DC9}\1.0\HELPDIR	regsvr32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2476 wrote to memory of 296	2476	regsvr32.exe	18
PID 2476 wrote to memory of 296	2476	regsvr32.exe	18
PID 2476 wrote to memory of 296	2476	regsvr32.exe	18
PID 2476 wrote to memory of 296	2476	regsvr32.exe	18
PID 2476 wrote to memory of 296	2476	regsvr32.exe	18
PID 2476 wrote to memory of 296	2476	regsvr32.exe	18
PID 2476 wrote to memory of 296	2476	regsvr32.exe	18

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\7f330d0bf00130ab6acc7e43722d309c.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:2476
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\7f330d0bf00130ab6acc7e43722d309c.dll
  2⤵
  - Installs/modifies Browser Helper Object
  - Modifies registry class
  PID:296

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

Windows 7 deprecation

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