b4ccd84e6313bef201788d8beb998f8ff7ccb7e0da86f9291e32517173aadd8a

Analysis

max time kernel
124s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
30/10/2022, 14:31

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General

Target

b4ccd84e6313bef201788d8beb998f8ff7ccb7e0da86f9291e32517173aadd8a.exe
Size

372KB
MD5

93b6845fd7e9992bf947fe8168625760
SHA1

cabf5e62130499ab33afe8609d2a4ee98a71b4a9
SHA256

b4ccd84e6313bef201788d8beb998f8ff7ccb7e0da86f9291e32517173aadd8a
SHA512

cf1202fb9e5a794f0cb552cc01ac33564f6b0777181a4f3e393ea7e6446df22f87ad444a13183a34569d203c38b1e075c89af271bc51a31aedbc7f5bc1670706
SSDEEP

6144:MRAhhJxX7bNIFlx6W3q5j1SX7GHtSFs91oS2VJm0acsd54lW0WxhSH+4U:UsAYDj8X7GHtEs9edzpzTNH+n

Score

10^/10

persistence

Malware Config

Signatures

Modifies system executable filetype association 2 TTPs 1 IoCs

persistence

Modify Registry

T1112

Change Default File Association

T1042

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\SysWow64\\concp32.exe \"%1\" %*"	b4ccd84e6313bef201788d8beb998f8ff7ccb7e0da86f9291e32517173aadd8a.exe

Modifies Installed Components in the registry 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{86A231BA-8B9A-11D5-EBA1-F78EEEEEE983}	b4ccd84e6313bef201788d8beb998f8ff7ccb7e0da86f9291e32517173aadd8a.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{86A231BA-8B9A-11D5-EBA1-F78EEEEEE983}\StubPath = "mskfn32.exe"	b4ccd84e6313bef201788d8beb998f8ff7ccb7e0da86f9291e32517173aadd8a.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\VCL = "vcl32.exe"	b4ccd84e6313bef201788d8beb998f8ff7ccb7e0da86f9291e32517173aadd8a.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\VCL = "vcl32.exe"	b4ccd84e6313bef201788d8beb998f8ff7ccb7e0da86f9291e32517173aadd8a.exe

Drops file in System32 directory 6 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\mskfn32.exe	b4ccd84e6313bef201788d8beb998f8ff7ccb7e0da86f9291e32517173aadd8a.exe
File created	C:\Windows\SysWOW64\concp32.exe	b4ccd84e6313bef201788d8beb998f8ff7ccb7e0da86f9291e32517173aadd8a.exe
File opened for modification	C:\Windows\SysWOW64\concp32.exe	b4ccd84e6313bef201788d8beb998f8ff7ccb7e0da86f9291e32517173aadd8a.exe
File created	C:\Windows\SysWOW64\vcl32.exe	b4ccd84e6313bef201788d8beb998f8ff7ccb7e0da86f9291e32517173aadd8a.exe
File opened for modification	C:\Windows\SysWOW64\vcl32.exe	b4ccd84e6313bef201788d8beb998f8ff7ccb7e0da86f9291e32517173aadd8a.exe
File created	C:\Windows\SysWOW64\mskfn32.exe	b4ccd84e6313bef201788d8beb998f8ff7ccb7e0da86f9291e32517173aadd8a.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1076	3100	WerFault.exe	82

Modifies registry class 5 IoCs

description	ioc	Process
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{86A231BA-8B9A-11D5-EBA1-F78EEEEEE983}\sm = ebb5525fa3bcf9422c8ff945977d6af9	b4ccd84e6313bef201788d8beb998f8ff7ccb7e0da86f9291e32517173aadd8a.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{86A231BA-8B9A-11D5-EBA1-F78EEEEEE983}\ax = 528eecb4f8794233226628c1a6608ea4	b4ccd84e6313bef201788d8beb998f8ff7ccb7e0da86f9291e32517173aadd8a.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\SysWow64\\concp32.exe \"%1\" %*"	b4ccd84e6313bef201788d8beb998f8ff7ccb7e0da86f9291e32517173aadd8a.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{86A231BA-8B9A-11D5-EBA1-F78EEEEEE983}	b4ccd84e6313bef201788d8beb998f8ff7ccb7e0da86f9291e32517173aadd8a.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{86A231BA-8B9A-11D5-EBA1-F78EEEEEE983}\InprocServer32	b4ccd84e6313bef201788d8beb998f8ff7ccb7e0da86f9291e32517173aadd8a.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
3100	b4ccd84e6313bef201788d8beb998f8ff7ccb7e0da86f9291e32517173aadd8a.exe

C:\Users\Admin\AppData\Local\Temp\b4ccd84e6313bef201788d8beb998f8ff7ccb7e0da86f9291e32517173aadd8a.exe
"C:\Users\Admin\AppData\Local\Temp\b4ccd84e6313bef201788d8beb998f8ff7ccb7e0da86f9291e32517173aadd8a.exe"
1⤵
- Modifies system executable filetype association
- Modifies Installed Components in the registry
- Adds Run key to start application
- Drops file in System32 directory
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
PID:3100
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3100 -s 736
  2⤵
  - Program crash
  PID:1076

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3100 -ip 3100
1⤵
PID:5020

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Change Default File Association

T1042

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/3100-132-0x0000000000400000-0x0000000000435000-memory.dmp

Filesize
212KB

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memory/3100-133-0x0000000000400000-0x0000000000435000-memory.dmp

Filesize
212KB

Download