a55b2334334dd206aceea6719cf7ec3bac9b325d84f0607e65f4a3f88b57161e

Analysis

max time kernel
44s
max time network
157s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
06/01/2024, 12:08

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General

Target

46315b54912739075d98433897e86ecd.exe
Size

367KB
MD5

46315b54912739075d98433897e86ecd
SHA1

34d12821cca2589b80d9b5d2c235375563b1b6a0
SHA256

a55b2334334dd206aceea6719cf7ec3bac9b325d84f0607e65f4a3f88b57161e
SHA512

db233bd3bcb55f9504fec776da6df83bac98f6915133ce3dc62aa29de313b9c247dfdbd1164f435ecce337357402e2fc9b05250e7d3f86f316047742ebc51eef
SSDEEP

6144:R/kFr0H89gBk+0AS7qHcrymVwAiO2QVmJYtXbwp0UsaIJT+vybUxGknqwwc2j:R/kpj9wen7q8rzRVmetXbw6UsZWybcn2

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
4708	winupgrade.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\ime\winupgrade.exe	46315b54912739075d98433897e86ecd.exe
File opened for modification	C:\Windows\ime\winupgrade.exe	46315b54912739075d98433897e86ecd.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

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\Main	winupgrade.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Internet Explorer\Main\Enable Browser Extensions = "no"	winupgrade.exe

Modifies data under HKEY_USERS 5 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\SoftWare\Microsoft\Internet Explorer\New Windows	winupgrade.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Internet Explorer\New Windows\PopupMgr = "no"	winupgrade.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Internet Explorer\Main	winupgrade.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Internet Explorer\Main\Enable Browser Extensions = "no"	winupgrade.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Internet Explorer\Main\Play_Background_Sounds = "no"	winupgrade.exe

Modifies registry class 34 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\http\shell\open\command	winupgrade.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile\shell	winupgrade.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\http\shell	winupgrade.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile\shell\open\command	winupgrade.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\file	winupgrade.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\ftp\shell	winupgrade.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\https\shell	winupgrade.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\InternetShortcut\shell\open	winupgrade.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\InternetShortcut\shell\Open\command	winupgrade.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\file\shell	winupgrade.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{0002DF01-0000-0000-C000-000000000046}\LocalServer32	winupgrade.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID	winupgrade.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\InternetShortcut\shell\open\command	winupgrade.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\InternetShortcut	winupgrade.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\mhtmlfile\shell\ = "open"	winupgrade.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\file\shell\open	winupgrade.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\ftp\shell\ = "open"	winupgrade.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\file\shell\ = "open"	winupgrade.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\ftp\shell\open\command\ = "\"C:\\Program Files (x86)\\Internet Explorer\\iexplore.exe\" \"%1\""	winupgrade.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{0002DF01-0000-0000-C000-000000000046}	winupgrade.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\https\shell\open\command\ = "\"C:\\Program Files (x86)\\Internet Explorer\\iexplore.exe\" \"%1\""	winupgrade.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile\shell\open\command\ = "\"C:\\Program Files (x86)\\Internet Explorer\\iexplore.exe\" \"%1\""	winupgrade.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile\shell\ = "open"	winupgrade.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\mhtmlfile\shell\open\command	winupgrade.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\mhtmlfile\shell\open\command\ = "\"C:\\Program Files (x86)\\Internet Explorer\\iexplore.exe\" \"%1\""	winupgrade.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\file\shell\open\command\ = "\"C:\\Program Files (x86)\\Internet Explorer\\iexplore.exe\" \"%1\""	winupgrade.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\https\shell\open\command	winupgrade.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\https\shell\ = "open"	winupgrade.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\http\shell\open\command\ = "\"C:\\Program Files (x86)\\Internet Explorer\\iexplore.exe\" \"%1\""	winupgrade.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\http\shell\ = "open"	winupgrade.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\mhtmlfile\shell	winupgrade.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\InternetShortcut\shell	winupgrade.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\ftp\shell\open\command	winupgrade.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\file\shell\open\command	winupgrade.exe

Runs net.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2136	46315b54912739075d98433897e86ecd.exe
2136	46315b54912739075d98433897e86ecd.exe
2136	46315b54912739075d98433897e86ecd.exe
2136	46315b54912739075d98433897e86ecd.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2136 wrote to memory of 1572	2136	46315b54912739075d98433897e86ecd.exe	25
PID 2136 wrote to memory of 1572	2136	46315b54912739075d98433897e86ecd.exe	25
PID 2136 wrote to memory of 1572	2136	46315b54912739075d98433897e86ecd.exe	25
PID 1572 wrote to memory of 4540	1572	net.exe	27
PID 1572 wrote to memory of 4540	1572	net.exe	27
PID 1572 wrote to memory of 4540	1572	net.exe	27
PID 2136 wrote to memory of 3812	2136	46315b54912739075d98433897e86ecd.exe	95
PID 2136 wrote to memory of 3812	2136	46315b54912739075d98433897e86ecd.exe	95
PID 2136 wrote to memory of 3812	2136	46315b54912739075d98433897e86ecd.exe	95

C:\Users\Admin\AppData\Local\Temp\46315b54912739075d98433897e86ecd.exe
"C:\Users\Admin\AppData\Local\Temp\46315b54912739075d98433897e86ecd.exe"
1⤵
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2136
- C:\Windows\SysWOW64\net.exe
  net stop McShield
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1572
- - C:\Windows\SysWOW64\net1.exe
    C:\Windows\system32\net1 stop McShield
    3⤵
    PID:4540
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ieflux.exe_deleteme.bat
  2⤵
  PID:3812

C:\Windows\ime\winupgrade.exe
C:\Windows\ime\winupgrade.exe
1⤵
- Executes dropped EXE
- Modifies Internet Explorer settings
- Modifies data under HKEY_USERS
- Modifies registry class
PID:4708

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\ieflux.exe_deleteme.bat

Filesize
64B

MD5
bfcaeabfbce998e551827934f9cab4ad

SHA1
3a91d41d9d42b737bdb82f59b3867d3b4ef27035

SHA256
1813f05035373247df14aeb946d7a38183cd78e9d6ed1f637b45eaff537b382a

SHA512
5a393fc6e5cd0004b8c559b5dbbbc6903c4df29e27df3a4fe26bb8ad40b860f51d10152d7ebf002de6772448411edf3838626c34ce5d2265aa6a9703809831db

Download Submit
C:\Windows\IME\winupgrade.exe

Filesize
154KB

MD5
0d03e19c0e8ca2a3ab00e64f0fbcea62

SHA1
2dff19447151629b38045bd4446fe5995e7f7d3f

SHA256
9bded95ed2f49f7a3f25fcdd1db957129be600963e0f9e7269cba731cf231c0b

SHA512
f2b84a05aa5f95c3d9a0b2535498cee591725376628cf6c10f366fd2e5eb9bc59d6c7bb59139a00fcaa2996108c499083727a7b0ed3098d9351159ddf2f1374f

Download Submit
C:\Windows\ime\winupgrade.exe

Filesize
178KB

MD5
fc92a4fec697cb8c86bb2f4fa0e480c2

SHA1
d968409a6a767ddcccc3cc511a98e6032c123d79

SHA256
79977fe63a97890102bffbfc8c482d74c742e6d8e3f4c41422757befbce41aff

SHA512
f785416ee2784aab132304b117644f25674d7d044a417965816c83b7c7c34fbba40de27afe12fc75f257ff6b98c28bcb1df7d70ebf79514d72d320615443fdb7

Download Submit
memory/2136-1-0x00000000006C0000-0x00000000006C1000-memory.dmp

Filesize
4KB

Download
memory/2136-0-0x0000000000400000-0x000000000051F000-memory.dmp

Filesize
1.1MB

Download
memory/2136-10-0x0000000000400000-0x000000000051F000-memory.dmp

Filesize
1.1MB

Download
memory/4708-14-0x0000000000400000-0x00000000004AA200-memory.dmp

Filesize
680KB

Download
memory/4708-17-0x0000000000400000-0x00000000004AA200-memory.dmp

Filesize
680KB

Download
memory/4708-12-0x0000000000400000-0x00000000004AA200-memory.dmp

Filesize
680KB

Download
memory/4708-13-0x0000000000400000-0x00000000004AA200-memory.dmp

Filesize
680KB

Download
memory/4708-6-0x0000000000400000-0x00000000004AA200-memory.dmp

Filesize
680KB

Download
memory/4708-15-0x0000000000400000-0x00000000004AA200-memory.dmp

Filesize
680KB

Download
memory/4708-16-0x0000000000400000-0x00000000004AA200-memory.dmp

Filesize
680KB

Download
memory/4708-7-0x0000000000ED0000-0x0000000000ED1000-memory.dmp

Filesize
4KB

Download
memory/4708-18-0x0000000000400000-0x00000000004AA200-memory.dmp

Filesize
680KB

Download
memory/4708-19-0x0000000000400000-0x00000000004AA200-memory.dmp

Filesize
680KB

Download
memory/4708-20-0x0000000000400000-0x00000000004AA200-memory.dmp

Filesize
680KB

Download
memory/4708-21-0x0000000000400000-0x00000000004AA200-memory.dmp

Filesize
680KB

Download
memory/4708-22-0x0000000000400000-0x00000000004AA200-memory.dmp

Filesize
680KB

Download
memory/4708-23-0x0000000000400000-0x00000000004AA200-memory.dmp

Filesize
680KB

Download
memory/4708-24-0x0000000000400000-0x00000000004AA200-memory.dmp

Filesize
680KB

Download
memory/4708-25-0x0000000000400000-0x00000000004AA200-memory.dmp

Filesize
680KB

Download