b37747c43979de2da7bc6e87031757b61c240de6bbd66ff036793ca5b565a866

Analysis

max time kernel
163s
max time network
168s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
04/12/2022, 00:05

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

b37747c43979de2da7bc6e87031757b61c240de6bbd66ff036793ca5b565a866.exe
Size

80KB
MD5

647f4fa1dd79369052b83861b0125d7f
SHA1

acbf5aaa6184a3e13a56eee50605b99dc073fbe5
SHA256

b37747c43979de2da7bc6e87031757b61c240de6bbd66ff036793ca5b565a866
SHA512

654e3e85f47a40465edf1030b7c0315a7395d581ab4031f907a2812e2c0f51074cfc63872d2223467ddbcdfa7b4868fe0b44ec142f83c611d4c92ff124ca46f2
SSDEEP

1536:/95S7dmlVz/P6N2tvrKebf5UzeVFYjCKyDn/IyHglOJJWSaVwzSiC2d:/LS7Qzam225UCVsCK27JJWSaViSib

Score

10^/10

persistence upx

Malware Config

Signatures

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Userinit = "userinit.exeC:\\Windows\\system32\\inetserv.exe,"	b37747c43979de2da7bc6e87031757b61c240de6bbd66ff036793ca5b565a866.exe

UPX packed file 1 IoCs

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

upx

resource	yara_rule
behavioral1/memory/912-59-0x0000000000400000-0x0000000000414000-memory.dmp	upx

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\inetserv = "C:\\Windows\\system32\\inetserv.exe"	b37747c43979de2da7bc6e87031757b61c240de6bbd66ff036793ca5b565a866.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\inetserv.exe	b37747c43979de2da7bc6e87031757b61c240de6bbd66ff036793ca5b565a866.exe
File created	C:\Windows\SysWOW64\inetserv.exe	b37747c43979de2da7bc6e87031757b61c240de6bbd66ff036793ca5b565a866.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 912 set thread context of 768	912	b37747c43979de2da7bc6e87031757b61c240de6bbd66ff036793ca5b565a866.exe	28

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
912	b37747c43979de2da7bc6e87031757b61c240de6bbd66ff036793ca5b565a866.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 912 wrote to memory of 768	912	b37747c43979de2da7bc6e87031757b61c240de6bbd66ff036793ca5b565a866.exe	28
PID 912 wrote to memory of 768	912	b37747c43979de2da7bc6e87031757b61c240de6bbd66ff036793ca5b565a866.exe	28
PID 912 wrote to memory of 768	912	b37747c43979de2da7bc6e87031757b61c240de6bbd66ff036793ca5b565a866.exe	28
PID 912 wrote to memory of 768	912	b37747c43979de2da7bc6e87031757b61c240de6bbd66ff036793ca5b565a866.exe	28
PID 912 wrote to memory of 768	912	b37747c43979de2da7bc6e87031757b61c240de6bbd66ff036793ca5b565a866.exe	28
PID 912 wrote to memory of 768	912	b37747c43979de2da7bc6e87031757b61c240de6bbd66ff036793ca5b565a866.exe	28
PID 912 wrote to memory of 768	912	b37747c43979de2da7bc6e87031757b61c240de6bbd66ff036793ca5b565a866.exe	28
PID 912 wrote to memory of 768	912	b37747c43979de2da7bc6e87031757b61c240de6bbd66ff036793ca5b565a866.exe	28
PID 912 wrote to memory of 768	912	b37747c43979de2da7bc6e87031757b61c240de6bbd66ff036793ca5b565a866.exe	28
PID 912 wrote to memory of 768	912	b37747c43979de2da7bc6e87031757b61c240de6bbd66ff036793ca5b565a866.exe	28
PID 912 wrote to memory of 768	912	b37747c43979de2da7bc6e87031757b61c240de6bbd66ff036793ca5b565a866.exe	28
PID 912 wrote to memory of 768	912	b37747c43979de2da7bc6e87031757b61c240de6bbd66ff036793ca5b565a866.exe	28
PID 912 wrote to memory of 768	912	b37747c43979de2da7bc6e87031757b61c240de6bbd66ff036793ca5b565a866.exe	28

C:\Users\Admin\AppData\Local\Temp\b37747c43979de2da7bc6e87031757b61c240de6bbd66ff036793ca5b565a866.exe
"C:\Users\Admin\AppData\Local\Temp\b37747c43979de2da7bc6e87031757b61c240de6bbd66ff036793ca5b565a866.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:912
- C:\Users\Admin\AppData\Local\Temp\b37747c43979de2da7bc6e87031757b61c240de6bbd66ff036793ca5b565a866.exe
  C:\Users\Admin\AppData\Local\Temp\b37747c43979de2da7bc6e87031757b61c240de6bbd66ff036793ca5b565a866.exe
  2⤵
  - Modifies WinLogon for persistence
  - Adds Run key to start application
  - Drops file in System32 directory
  PID:768

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Winlogon Helper DLL

T1004

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/768-56-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/768-60-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/768-61-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/768-62-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/912-59-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads