47ffb920fceccd76781e0b05fdf7782bd79077966935cefa93ecaba606217fea

Analysis

max time kernel
119s
max time network
120s
platform
windows7_x64
resource
win7-20240220-en
resource tags

arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
submitted
04/07/2024, 08:52

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General

Target

$_5_.dll
Size

367KB
MD5

c89d0d7a8ef333885c0e1b7111b98207
SHA1

7e3359747c4e24d8837d54d07ca8cd262ac47b63
SHA256

1b2d1feaffdda22dbee1d1707bc8ec316f5bd4e60dbfca6ae5371fa853c069c3
SHA512

6f7452cab9ca215983c6c16dd865697b883cc4414f67c76ee9a077f8c30270604573b7bdfefc71547fedb745ac9cfedc7afeb6fc439d6cc5da1d32be3f29929a
SSDEEP

6144:bpmLyd6vqO97hVrQuVSWbUoU4A8IZO7mnNYLL4g5TBkjr+mDyMl2FaM:bELV9dq6Ujc7mnIsg5Tejr+mWM8N

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\{eacd3354-5c69-d653-85e6-7ea788c25c0d}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{eacd3354-5c69-d653-85e6-7ea788c25c0d}\NoExplorer = "\"\""	regsvr32.exe

Modifies registry class 5 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{eacd3354-5c69-d653-85e6-7ea788c25c0d}\InProcServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\$_5_.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{eacd3354-5c69-d653-85e6-7ea788c25c0d}\InProcServer32\ThreadingModel = "Apartment"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{eacd3354-5c69-d653-85e6-7ea788c25c0d}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{eacd3354-5c69-d653-85e6-7ea788c25c0d}\ = "coolblueads"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{eacd3354-5c69-d653-85e6-7ea788c25c0d}\InProcServer32	regsvr32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 840 wrote to memory of 1112	840	regsvr32.exe	28
PID 840 wrote to memory of 1112	840	regsvr32.exe	28
PID 840 wrote to memory of 1112	840	regsvr32.exe	28
PID 840 wrote to memory of 1112	840	regsvr32.exe	28
PID 840 wrote to memory of 1112	840	regsvr32.exe	28
PID 840 wrote to memory of 1112	840	regsvr32.exe	28
PID 840 wrote to memory of 1112	840	regsvr32.exe	28

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\$_5_.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:840
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\$_5_.dll
  2⤵
  - Installs/modifies Browser Helper Object
  - Modifies registry class
  PID:1112

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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