77f2f54f2c856d5627bc87cc48a7e7d4cb19de8fdc4f7f42b381218abb13e3de

Analysis

max time kernel
122s
max time network
123s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
03/02/2024, 11:08

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General

Target

8c2c2e3b54423a6c459628d75fe99875.dll
Size

72KB
MD5

8c2c2e3b54423a6c459628d75fe99875
SHA1

c363ecb18ac4ed5f4b407a4789c1ff9c98341912
SHA256

77f2f54f2c856d5627bc87cc48a7e7d4cb19de8fdc4f7f42b381218abb13e3de
SHA512

3e7061d1a13a74ff13709d867e5fe646ec20a0cb2cc822477f71c9559613eff429fc1ea26c42f406b472858162f3f09a09d3780206005b21bdd2b46292fdfbe1
SSDEEP

1536:DfLBFLXhMnAorfnE0XUamEfm44Y5JIq73kCp9gg:bdMnAorfnQamEfm44KJIq7koig

Score

7^/10

adware stealer upx

Malware Config

Signatures

UPX packed file 1 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2536-0-0x0000000010000000-0x0000000010032000-memory.dmp	upx

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\{B69F34DD-F0F9-42DC-9EDD-957187DA688D}	regsvr32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{B69F34DD-F0F9-42DC-9EDD-957187DA688D}\NoExplorer = "1"	regsvr32.exe

Modifies registry class 36 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{B69F34DD-F0F9-42DC-9EDD-957187DA688D}\TypeLib\ = "{A13FA9A7-4644-4233-8192-891801DC3355}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{A13FA9A7-4644-4233-8192-891801DC3355}\1.0\0	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{A13FA9A7-4644-4233-8192-891801DC3355}\1.0\HELPDIR\ = "C:\\Users\\Admin\\AppData\\Local\\Temp"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{4BC48C56-7723-4FE8-8BFA-54A0A19707B3}\ProxyStubClsid32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{4BC48C56-7723-4FE8-8BFA-54A0A19707B3}\TypeLib	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{4BC48C56-7723-4FE8-8BFA-54A0A19707B3}\TypeLib\Version = "1.0"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{B69F34DD-F0F9-42DC-9EDD-957187DA688D}\ = "wybhotool Class"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{4BC48C56-7723-4FE8-8BFA-54A0A19707B3}\TypeLib	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{4BC48C56-7723-4FE8-8BFA-54A0A19707B3}\TypeLib\Version = "1.0"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{B69F34DD-F0F9-42DC-9EDD-957187DA688D}\VersionIndependentProgID\ = "WYBHO.wybhotool"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{B69F34DD-F0F9-42DC-9EDD-957187DA688D}\TypeLib	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{A13FA9A7-4644-4233-8192-891801DC3355}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{4BC48C56-7723-4FE8-8BFA-54A0A19707B3}\TypeLib\ = "{A13FA9A7-4644-4233-8192-891801DC3355}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{4BC48C56-7723-4FE8-8BFA-54A0A19707B3}\ProxyStubClsid32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{B69F34DD-F0F9-42DC-9EDD-957187DA688D}\ProgID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{B69F34DD-F0F9-42DC-9EDD-957187DA688D}\ProgID\ = "WYBHO.wybhotool.1"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{A13FA9A7-4644-4233-8192-891801DC3355}\1.0\ = "WYBHO 1.0 Type Library"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{B69F34DD-F0F9-42DC-9EDD-957187DA688D}\VersionIndependentProgID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{A13FA9A7-4644-4233-8192-891801DC3355}\1.0	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{A13FA9A7-4644-4233-8192-891801DC3355}\1.0\FLAGS	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{A13FA9A7-4644-4233-8192-891801DC3355}\1.0\HELPDIR	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{4BC48C56-7723-4FE8-8BFA-54A0A19707B3}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{4BC48C56-7723-4FE8-8BFA-54A0A19707B3}\TypeLib\ = "{A13FA9A7-4644-4233-8192-891801DC3355}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{B69F34DD-F0F9-42DC-9EDD-957187DA688D}\Programmable	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{B69F34DD-F0F9-42DC-9EDD-957187DA688D}\InprocServer32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{4BC48C56-7723-4FE8-8BFA-54A0A19707B3}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{4BC48C56-7723-4FE8-8BFA-54A0A19707B3}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{4BC48C56-7723-4FE8-8BFA-54A0A19707B3}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{B69F34DD-F0F9-42DC-9EDD-957187DA688D}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{B69F34DD-F0F9-42DC-9EDD-957187DA688D}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\8c2c2e3b54423a6c459628d75fe99875.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{4BC48C56-7723-4FE8-8BFA-54A0A19707B3}\ = "Iwybhotool"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{4BC48C56-7723-4FE8-8BFA-54A0A19707B3}\ = "Iwybhotool"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{B69F34DD-F0F9-42DC-9EDD-957187DA688D}\InprocServer32\ThreadingModel = "Apartment"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{A13FA9A7-4644-4233-8192-891801DC3355}\1.0\FLAGS\ = "0"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{A13FA9A7-4644-4233-8192-891801DC3355}\1.0\0\win32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{A13FA9A7-4644-4233-8192-891801DC3355}\1.0\0\win32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\8c2c2e3b54423a6c459628d75fe99875.dll"	regsvr32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2184 wrote to memory of 2536	2184	regsvr32.exe	28
PID 2184 wrote to memory of 2536	2184	regsvr32.exe	28
PID 2184 wrote to memory of 2536	2184	regsvr32.exe	28
PID 2184 wrote to memory of 2536	2184	regsvr32.exe	28
PID 2184 wrote to memory of 2536	2184	regsvr32.exe	28
PID 2184 wrote to memory of 2536	2184	regsvr32.exe	28
PID 2184 wrote to memory of 2536	2184	regsvr32.exe	28

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\8c2c2e3b54423a6c459628d75fe99875.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:2184
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\8c2c2e3b54423a6c459628d75fe99875.dll
  2⤵
  - Installs/modifies Browser Helper Object
  - Modifies registry class
  PID:2536

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

Replay Monitor

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Downloads

memory/2536-0-0x0000000010000000-0x0000000010032000-memory.dmp

Filesize
200KB

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