5c22ccbac370338b99748960a57fb58a0325911f2ccd52649b46693c614fe5d7

Analysis

max time kernel
120s
max time network
125s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
30/12/2023, 20:53

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General

Target

1c3f983cae9383ce43176eb050ba588c.dll
Size

194KB
MD5

1c3f983cae9383ce43176eb050ba588c
SHA1

4beea54759f7bac618496921e85644aaf3c30fd5
SHA256

5c22ccbac370338b99748960a57fb58a0325911f2ccd52649b46693c614fe5d7
SHA512

2c4111e0c733acc72aaa277640ade762c1225ef933aca0f67a1768e4190f91cbaad64c578dc13f1811dd18f5afd30b563d9342a12f18d23b76cef0116e2ce6e2
SSDEEP

3072:bbhMAVF6/YjD7BOqV0u37mYsl9SPnjdTKYYOIhB+8Oj2VS+fDAPdfe1l1AVE:6AVNDV9V7q7eR0f/k+bam/1

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/2000-0-0x00000000004B0000-0x0000000000534000-memory.dmp	upx

Installs/modifies Browser Helper Object 2 TTPs 1 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\{EA2FCCA9-F44F-43DD-9724-9339950D103C}	regsvr32.exe

Modifies registry class 11 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\1c3f983cae9383ce43176eb050ba588c.Thunder5Helper	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\1c3f983cae9383ce43176eb050ba588c.Thunder5Helper\ = "Thunder5ÏÂÔØ¸¨Öú"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{EA2FCCA9-F44F-43DD-9724-9339950D103C}\ProgID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{EA2FCCA9-F44F-43DD-9724-9339950D103C}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{EA2FCCA9-F44F-43DD-9724-9339950D103C}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\1c3f983cae9383ce43176eb050ba588c.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{EA2FCCA9-F44F-43DD-9724-9339950D103C}\InprocServer32\ThreadingModel = "Apartment"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\1c3f983cae9383ce43176eb050ba588c.Thunder5Helper\Clsid\ = "{EA2FCCA9-F44F-43DD-9724-9339950D103C}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{EA2FCCA9-F44F-43DD-9724-9339950D103C}\ProgID\ = "1c3f983cae9383ce43176eb050ba588c.Thunder5Helper"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{EA2FCCA9-F44F-43DD-9724-9339950D103C}\ = "Thunder5ÏÂÔØ¸¨Öú"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{EA2FCCA9-F44F-43DD-9724-9339950D103C}\InprocServer32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\1c3f983cae9383ce43176eb050ba588c.Thunder5Helper\Clsid	regsvr32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2300 wrote to memory of 2000	2300	regsvr32.exe	28
PID 2300 wrote to memory of 2000	2300	regsvr32.exe	28
PID 2300 wrote to memory of 2000	2300	regsvr32.exe	28
PID 2300 wrote to memory of 2000	2300	regsvr32.exe	28
PID 2300 wrote to memory of 2000	2300	regsvr32.exe	28
PID 2300 wrote to memory of 2000	2300	regsvr32.exe	28
PID 2300 wrote to memory of 2000	2300	regsvr32.exe	28

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\1c3f983cae9383ce43176eb050ba588c.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:2300
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\1c3f983cae9383ce43176eb050ba588c.dll
  2⤵
  - Installs/modifies Browser Helper Object
  - Modifies registry class
  PID:2000

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/2000-0-0x00000000004B0000-0x0000000000534000-memory.dmp

Filesize
528KB

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