e2aa2aaeef264369a30de21905df03a6bea2134be3c6bb63815c8305beb7973c

Analysis

max time kernel
6s
max time network
16s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
29/01/2024, 12:34

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General

Target

7fd879394351cc247185c7c3537af62f.exe
Size

264KB
MD5

7fd879394351cc247185c7c3537af62f
SHA1

eece0bc50165b20f18387ce2d90a5596e61b5784
SHA256

e2aa2aaeef264369a30de21905df03a6bea2134be3c6bb63815c8305beb7973c
SHA512

5bc65f4a411131ac22db044fff9fd0f016a3d00e8e634627c9c964d1e0026a9d269fd84717a17a817a03a2d0d9f985a4f17e499ab850040a769f41b7fb5d155c
SSDEEP

6144:t43E/UxShGkwrKhiuFHMQsgnHnTrMvyGkDVH86+ZlE:yGUxSNwrKhrH5nH3GxZK

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2164	winupgrade.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\ime\winupgrade.exe	7fd879394351cc247185c7c3537af62f.exe
File opened for modification	C:\Windows\ime\winupgrade.exe	7fd879394351cc247185c7c3537af62f.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\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
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

Modifies registry class 34 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\file\shell\open\command	winupgrade.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\InternetShortcut\shell\Open\command	winupgrade.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\mhtmlfile\shell\ = "open"	winupgrade.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{0002DF01-0000-0000-C000-000000000046}\LocalServer32	winupgrade.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\https\shell\open\command\ = "\"C:\\Program Files (x86)\\Internet Explorer\\iexplore.exe\" \"%1\""	winupgrade.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\https\shell	winupgrade.exe
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\InternetShortcut\shell	winupgrade.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\file\shell	winupgrade.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\ftp\shell\ = "open"	winupgrade.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\http\shell	winupgrade.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\http\shell\ = "open"	winupgrade.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile\shell\ = "open"	winupgrade.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\InternetShortcut\shell\open\command	winupgrade.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\file	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\ftp\shell	winupgrade.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{0002DF01-0000-0000-C000-000000000046}	winupgrade.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile\shell\open\command	winupgrade.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\mhtmlfile\shell\open\command	winupgrade.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\file\shell\ = "open"	winupgrade.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\ftp\shell\open\command	winupgrade.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\file\shell\open	winupgrade.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID	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\mhtmlfile\shell\open\command\ = "\"C:\\Program Files (x86)\\Internet Explorer\\iexplore.exe\" \"%1\""	winupgrade.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\mhtmlfile\shell	winupgrade.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile\shell\open\command\ = "\"C:\\Program Files (x86)\\Internet Explorer\\iexplore.exe\" \"%1\""	winupgrade.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\InternetShortcut	winupgrade.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\InternetShortcut\shell\open	winupgrade.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\file\shell\open\command\ = "\"C:\\Program Files (x86)\\Internet Explorer\\iexplore.exe\" \"%1\""	winupgrade.exe

Runs net.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3020	7fd879394351cc247185c7c3537af62f.exe
3020	7fd879394351cc247185c7c3537af62f.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 3020 wrote to memory of 2320	3020	7fd879394351cc247185c7c3537af62f.exe	28
PID 3020 wrote to memory of 2320	3020	7fd879394351cc247185c7c3537af62f.exe	28
PID 3020 wrote to memory of 2320	3020	7fd879394351cc247185c7c3537af62f.exe	28
PID 3020 wrote to memory of 2320	3020	7fd879394351cc247185c7c3537af62f.exe	28
PID 2320 wrote to memory of 3044	2320	net.exe	30
PID 2320 wrote to memory of 3044	2320	net.exe	30
PID 2320 wrote to memory of 3044	2320	net.exe	30
PID 2320 wrote to memory of 3044	2320	net.exe	30
PID 3020 wrote to memory of 2816	3020	7fd879394351cc247185c7c3537af62f.exe	32
PID 3020 wrote to memory of 2816	3020	7fd879394351cc247185c7c3537af62f.exe	32
PID 3020 wrote to memory of 2816	3020	7fd879394351cc247185c7c3537af62f.exe	32
PID 3020 wrote to memory of 2816	3020	7fd879394351cc247185c7c3537af62f.exe	32

C:\Users\Admin\AppData\Local\Temp\7fd879394351cc247185c7c3537af62f.exe
"C:\Users\Admin\AppData\Local\Temp\7fd879394351cc247185c7c3537af62f.exe"
1⤵
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:3020
- C:\Windows\SysWOW64\net.exe
  net stop McShield
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2320
- - C:\Windows\SysWOW64\net1.exe
    C:\Windows\system32\net1 stop McShield
    3⤵
    PID:3044
- C:\Windows\SysWOW64\cmd.exe
  cmd /c ieflux.exe_deleteme.bat
  2⤵
  PID:2816

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:2164

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
438KB

MD5
61f6616249dcd05447dfd44d8aeb20cb

SHA1
da03d83eb96281395c7779297e2a45ce4635a8db

SHA256
3b071d347a89c6ddaa3f183bbc2bda404c3631def2b0a3ee513b0e18d9faf307

SHA512
3fa3eddf68003d496fbbcf2cf59d1d92faaa6680f9b18c6a49d6a709a3c930cc48fc5001f94c26db92b0c09c73fcb5f685b5d08cad7f2632bb0e45a85c3ce7dd

Download Submit
memory/2164-4-0x0000000000400000-0x0000000000474200-memory.dmp

Filesize
464KB

Download
memory/2164-5-0x0000000000360000-0x0000000000361000-memory.dmp

Filesize
4KB

Download
memory/2164-15-0x0000000000400000-0x0000000000474200-memory.dmp

Filesize
464KB

Download
memory/2164-16-0x0000000000400000-0x0000000000474200-memory.dmp

Filesize
464KB

Download
memory/2164-17-0x0000000000400000-0x0000000000474200-memory.dmp

Filesize
464KB

Download
memory/2164-18-0x0000000000400000-0x0000000000474200-memory.dmp

Filesize
464KB

Download
memory/3020-0-0x0000000000400000-0x00000000004CF000-memory.dmp

Filesize
828KB

Download
memory/3020-13-0x0000000000400000-0x00000000004CF000-memory.dmp

Filesize
828KB

Download