b6073a335b57ff3ba40ee7c74c5b429d135202cbbddd9c04564e542951049a8b

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240709-en
resource tags

arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
submitted
11-07-2024 13:42

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General

Target

LinkmanCom.dll
Size

329KB
MD5

03a6aa502d4c9a2cf1ca89f4ee03915d
SHA1

eb4624d7c984fd1c943af148eef575b4bb460414
SHA256

380967b6e2f5d465738036510163878c399e37d18f63c6d5763616c4dac3a074
SHA512

89714fe64ec246b31bb9fc71601f9cf1497fa5adc5cdc91b323cb8266732bdafbe50e09ddfc4777e94baea866826466ffb6b9342cee44e12e8c3c62072f400ec
SSDEEP

6144:V8xeGQqa/AfzSzLSr3crUJKq110Qm627SQQT9JDNjAkUE7X2+bHqFWTr3vhw:VieHqa/Afz1sUcmyv/Au8DPDr3S

Score

7^/10

upx

Malware Config

Signatures

UPX packed file 1 IoCs

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

upx

resource	yara_rule
behavioral16/memory/1428-0-0x0000000000400000-0x00000000004EC000-memory.dmp	upx

Modifies Internet Explorer settings 1 TTPs 2 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Internet Explorer\Toolbar	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Internet Explorer\Toolbar\{5C9DCA26-CEC4-4280-A831-D622D4DBF113}	regsvr32.exe

Modifies registry class 17 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\LinkmanCom.TLinkmanComFactory\Clsid	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{5C9DCA26-CEC4-4280-A831-D622D4DBF113}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\LinkmanCom.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\LinkmanCom.TLinkmanComFactory\ = "Linkman"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\LinkmanCom.TLinkmanComFactory	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\LinkmanCom.TLinkmanComFactory\Clsid\ = "{5C9DCA26-CEC4-4280-A831-D622D4DBF113}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{5C9DCA26-CEC4-4280-A831-D622D4DBF113}\ProgID\ = "LinkmanCom.TLinkmanComFactory"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{5C9DCA26-CEC4-4280-A831-D622D4DBF113}\ = "&Linkman"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{5C9DCA26-CEC4-4280-A831-D622D4DBF113}\InProcServer32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{5C9DCA26-CEC4-4280-A831-D622D4DBF113}\ = "Linkman"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{5C9DCA26-CEC4-4280-A831-D622D4DBF113}\InprocServer32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{5C9DCA26-CEC4-4280-A831-D622D4DBF113}\Implemented Categories	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{5C9DCA26-CEC4-4280-A831-D622D4DBF113}\Implemented Categories\{00021492-0000-0000-C000-000000000046}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{5C9DCA26-CEC4-4280-A831-D622D4DBF113}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{5C9DCA26-CEC4-4280-A831-D622D4DBF113}\InprocServer32\ThreadingModel = "Apartment"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{5C9DCA26-CEC4-4280-A831-D622D4DBF113}\ProgID	regsvr32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 408 wrote to memory of 1428	408	regsvr32.exe	85
PID 408 wrote to memory of 1428	408	regsvr32.exe	85
PID 408 wrote to memory of 1428	408	regsvr32.exe	85

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\LinkmanCom.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:408
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\LinkmanCom.dll
  2⤵
  - Modifies Internet Explorer settings
  - Modifies registry class
  PID:1428

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/1428-0-0x0000000000400000-0x00000000004EC000-memory.dmp

Filesize
944KB

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