e767398f9d479aaafbb817a8b3584be495e94efec64998afa9337c43ea71ddc0

Analysis

max time kernel
120s
max time network
119s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
12/09/2024, 07:56

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General

Target

b3e33c93cefc11619de42b3876063480N.exe
Size

3.1MB
MD5

b3e33c93cefc11619de42b3876063480
SHA1

7c5b487e67aa16aae375b107017a9b6b52547281
SHA256

e767398f9d479aaafbb817a8b3584be495e94efec64998afa9337c43ea71ddc0
SHA512

abe38e47abc4e9256791be87f659b0d0137fe2ebd21248a4d18da3994af65c1c0c2b690461b795c3a9bdf3b8303bb6d765390a2bd990ebc0ffeadbbe3b132729
SSDEEP

49152:+UJ6ZNXox4SgJhBsfHJq/nCFT4Mv0Pt97R:+tR4xGnCtvw9

Score

10^/10

credential_access discovery evasion persistence spyware stealer trojan

Malware Config

Signatures

Modifies WinLogon for persistence 2 TTPs 4 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Userinit = "userinit.exe, cmd.exe /c start c:\\windows\\wininit.exe"	svchost.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "Explorer.exe"	wininit.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Userinit = "userinit.exe, cmd.exe /c start c:\\windows\\wininit.exe"	wininit.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "Explorer.exe"	svchost.exe

Modifies visiblity of hidden/system files in Explorer 2 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1564.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-3434294380-2554721341-1919518612-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	wininit.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3434294380-2554721341-1919518612-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	svchost.exe

UAC bypass 3 TTPs 9 IoCs

evasion trojan

Bypass User Account Control

T1548.002

Disable or Modify Tools

T1562.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0"	wininit.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	wininit.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0"	wininit.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0"	svchost.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	b3e33c93cefc11619de42b3876063480N.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0"	b3e33c93cefc11619de42b3876063480N.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0"	svchost.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	svchost.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0"	b3e33c93cefc11619de42b3876063480N.exe

Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
credential_access stealer

Credentials from Web Browsers
T1555.003

Executes dropped EXE 2 IoCs

pid	Process
2740	wininit.exe
2716	svchost.exe

Loads dropped DLL 1 IoCs

pid	Process
2708	b3e33c93cefc11619de42b3876063480N.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Checks whether UAC is enabled 1 TTPs 6 IoCs

evasion trojan

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	b3e33c93cefc11619de42b3876063480N.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	b3e33c93cefc11619de42b3876063480N.exe
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	wininit.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	wininit.exe
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	svchost.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	svchost.exe

Drops file in Windows directory 4 IoCs

description	ioc	Process
File created	\??\c:\windows\wininit.exe	b3e33c93cefc11619de42b3876063480N.exe
File opened for modification	\??\c:\windows\wininit.exe	b3e33c93cefc11619de42b3876063480N.exe
File opened for modification	\??\c:\windows\RCXE495.tmp	b3e33c93cefc11619de42b3876063480N.exe
File opened for modification	\??\c:\windows\wininit.exe	wininit.exe

Browser Information Discovery 1 TTPs
Enumerate browser information.
discovery

Browser Information Discovery
T1217
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b3e33c93cefc11619de42b3876063480N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wininit.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2708	b3e33c93cefc11619de42b3876063480N.exe
2708	b3e33c93cefc11619de42b3876063480N.exe
2740	wininit.exe
2740	wininit.exe
2716	svchost.exe
2740	wininit.exe
2716	svchost.exe
2740	wininit.exe
2716	svchost.exe
2740	wininit.exe
2716	svchost.exe
2740	wininit.exe
2716	svchost.exe
2740	wininit.exe
2716	svchost.exe
2740	wininit.exe
2716	svchost.exe
2740	wininit.exe
2716	svchost.exe
2740	wininit.exe
2716	svchost.exe
2716	svchost.exe
2740	wininit.exe
2716	svchost.exe
2740	wininit.exe
2716	svchost.exe
2740	wininit.exe
2716	svchost.exe
2740	wininit.exe
2716	svchost.exe
2740	wininit.exe
2740	wininit.exe
2716	svchost.exe
2716	svchost.exe
2740	wininit.exe
2716	svchost.exe
2740	wininit.exe
2740	wininit.exe
2716	svchost.exe
2716	svchost.exe
2740	wininit.exe
2716	svchost.exe
2740	wininit.exe
2716	svchost.exe
2740	wininit.exe
2716	svchost.exe
2740	wininit.exe
2716	svchost.exe
2740	wininit.exe
2740	wininit.exe
2716	svchost.exe
2716	svchost.exe
2740	wininit.exe
2716	svchost.exe
2740	wininit.exe
2716	svchost.exe
2740	wininit.exe
2716	svchost.exe
2740	wininit.exe
2716	svchost.exe
2740	wininit.exe
2740	wininit.exe
2716	svchost.exe
2716	svchost.exe

Suspicious behavior: GetForegroundWindowSpam 2 IoCs

pid	Process
2740	wininit.exe
2716	svchost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2740	wininit.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2708 wrote to memory of 2740	2708	b3e33c93cefc11619de42b3876063480N.exe	31
PID 2708 wrote to memory of 2740	2708	b3e33c93cefc11619de42b3876063480N.exe	31
PID 2708 wrote to memory of 2740	2708	b3e33c93cefc11619de42b3876063480N.exe	31
PID 2708 wrote to memory of 2740	2708	b3e33c93cefc11619de42b3876063480N.exe	31
PID 2708 wrote to memory of 2716	2708	b3e33c93cefc11619de42b3876063480N.exe	32
PID 2708 wrote to memory of 2716	2708	b3e33c93cefc11619de42b3876063480N.exe	32
PID 2708 wrote to memory of 2716	2708	b3e33c93cefc11619de42b3876063480N.exe	32
PID 2708 wrote to memory of 2716	2708	b3e33c93cefc11619de42b3876063480N.exe	32

System policy modification 1 TTPs 9 IoCs

evasion

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	wininit.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0"	wininit.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0"	svchost.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	svchost.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0"	svchost.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0"	b3e33c93cefc11619de42b3876063480N.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0"	b3e33c93cefc11619de42b3876063480N.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0"	wininit.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	b3e33c93cefc11619de42b3876063480N.exe

C:\Users\Admin\AppData\Local\Temp\b3e33c93cefc11619de42b3876063480N.exe
"C:\Users\Admin\AppData\Local\Temp\b3e33c93cefc11619de42b3876063480N.exe"
1⤵
- UAC bypass
- Loads dropped DLL
- Checks whether UAC is enabled
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
- System policy modification
PID:2708
- \??\c:\windows\wininit.exe
  c:\windows\wininit.exe
  2⤵
  - Modifies WinLogon for persistence
  - Modifies visiblity of hidden/system files in Explorer
  - UAC bypass
  - Executes dropped EXE
  - Checks whether UAC is enabled
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of SetWindowsHookEx
  - System policy modification
  PID:2740
- \??\c:\users\admin\appdata\local\svchost.exe
  c:\users\admin\appdata\local\svchost.exe
  2⤵
  - Modifies WinLogon for persistence
  - Modifies visiblity of hidden/system files in Explorer
  - UAC bypass
  - Executes dropped EXE
  - Checks whether UAC is enabled
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: GetForegroundWindowSpam
  - System policy modification
  PID:2716

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Winlogon Helper DLL

T1547.004

Privilege Escalation

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Boot or Logon Autostart Execution

T1547

Winlogon Helper DLL

T1547.004

Defense Evasion

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

Impair Defenses

T1562

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Browser Information Discovery

T1217

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\RCXE495.tmp

Filesize
3.1MB

MD5
ac514b7f272377ad36f233e0e2c2a08f

SHA1
79ab34745da9261e0d213b1190d16ab93f7d4802

SHA256
56cdc38e50cc6fadd4a8b4a35c3ec1adc956f00d3aeeb1b2decb3990bc3a5010

SHA512
24c323d7a199f3ed30531d6d93e0c25c5b6e2dbea84667963853e3fd9028786f647dac3d61b76b2b574016f556320e814e40008776488e6cd47a4dfab1225158

Download Submit
C:\Windows\wininit.exe

Filesize
3.1MB

MD5
b3e33c93cefc11619de42b3876063480

SHA1
7c5b487e67aa16aae375b107017a9b6b52547281

SHA256
e767398f9d479aaafbb817a8b3584be495e94efec64998afa9337c43ea71ddc0

SHA512
abe38e47abc4e9256791be87f659b0d0137fe2ebd21248a4d18da3994af65c1c0c2b690461b795c3a9bdf3b8303bb6d765390a2bd990ebc0ffeadbbe3b132729

Download Submit
memory/2708-0-0x0000000000230000-0x0000000000231000-memory.dmp

Filesize
4KB

Download
memory/2708-40-0x0000000000400000-0x00000000007B5000-memory.dmp

Filesize
3.7MB

Download
memory/2716-43-0x0000000000400000-0x00000000007B5000-memory.dmp

Filesize
3.7MB

Download
memory/2716-53-0x0000000000400000-0x00000000007B5000-memory.dmp

Filesize
3.7MB

Download
memory/2740-42-0x0000000000400000-0x00000000007B5000-memory.dmp

Filesize
3.7MB

Download
memory/2740-52-0x0000000000400000-0x00000000007B5000-memory.dmp

Filesize
3.7MB

Download