d91912b4b945e88e881e54573390e6723cfc41916b6546453b59e60f9beee337

Analysis

max time kernel
1794s
max time network
1809s
platform
windows10_x64
resource
win10v20201028
submitted
20-11-2020 14:34

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General

Target

VyprVPN.exe

Score

10^/10

persistence spyware stealer

Malware Config

Signatures

Modifies WinLogon for persistence 2 TTPs 2 IoCs

persistence

Winlogon Helper DLL

T1004

Modify Registry

T1112

Processes:

Clipper.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, C:\\Users\\Admin\\WinService.exe"	Clipper.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, C:\\Users\\Admin\\WinService.exe"	Clipper.exe

Executes dropped EXE 6 IoCs

Processes:

joinResult.exeVyprVPN.exe1111.exeClipper.exeWinService.exeWinService.exe

pid process

3772 joinResult.exe
3120 VyprVPN.exe
3304 1111.exe
2816 Clipper.exe
492 WinService.exe
2024 WinService.exe
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.

Query Registry
T1012

System Information Discovery
T1082

Processes:

1111.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Control Panel\International\Geo\Nation 1111.exe
Loads dropped DLL 2 IoCs

Processes:

VyprVPN.exejoinResult.exe

pid process

540 VyprVPN.exe
3772 joinResult.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
T1081
Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

Processes:

1111.exe

pid process

3304 1111.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

pid	process
3772	joinResult.exe
3120	VyprVPN.exe
3304	1111.exe
2816	Clipper.exe
492	WinService.exe
2024	WinService.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Control Panel\International\Geo\Nation	1111.exe

pid	process
540	VyprVPN.exe
3772	joinResult.exe

pid	process
3304	1111.exe

NSIS installer 4 IoCs

installer

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Roaming\1337\joinResult.exe	nsis_installer_1
C:\Users\Admin\AppData\Roaming\1337\joinResult.exe	nsis_installer_2
C:\Users\Admin\AppData\Roaming\1337\joinResult.exe	nsis_installer_1
C:\Users\Admin\AppData\Roaming\1337\joinResult.exe	nsis_installer_2

Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task
T1053

Processes:

schtasks.exe

pid process

1920 schtasks.exe
Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery
T1018

Processes:

PING.EXE

pid process

1896 PING.EXE
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

1111.exe

pid process

3304 1111.exe
3304 1111.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

Clipper.exeWinService.exeWinService.exe

description pid process

Token: SeDebugPrivilege 2816 Clipper.exe
Token: SeDebugPrivilege 492 WinService.exe
Token: SeDebugPrivilege 2024 WinService.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

1111.exe

pid process

3304 1111.exe

pid	process
1920	schtasks.exe

pid	process
1896	PING.EXE

pid	process
3304	1111.exe
3304	1111.exe

description	pid	process
Token: SeDebugPrivilege	2816	Clipper.exe
Token: SeDebugPrivilege	492	WinService.exe
Token: SeDebugPrivilege	2024	WinService.exe

pid	process
3304	1111.exe

Suspicious use of WriteProcessMemory 21 IoCs

Processes:

VyprVPN.exejoinResult.exeClipper.exe1111.execmd.exe

description	pid	process	target process
PID 540 wrote to memory of 3772	540	VyprVPN.exe	joinResult.exe
PID 540 wrote to memory of 3772	540	VyprVPN.exe	joinResult.exe
PID 540 wrote to memory of 3772	540	VyprVPN.exe	joinResult.exe
PID 540 wrote to memory of 3120	540	VyprVPN.exe	VyprVPN.exe
PID 540 wrote to memory of 3120	540	VyprVPN.exe	VyprVPN.exe
PID 540 wrote to memory of 3120	540	VyprVPN.exe	VyprVPN.exe
PID 3772 wrote to memory of 3304	3772	joinResult.exe	1111.exe
PID 3772 wrote to memory of 3304	3772	joinResult.exe	1111.exe
PID 3772 wrote to memory of 3304	3772	joinResult.exe	1111.exe
PID 3772 wrote to memory of 2816	3772	joinResult.exe	Clipper.exe
PID 3772 wrote to memory of 2816	3772	joinResult.exe	Clipper.exe
PID 2816 wrote to memory of 1920	2816	Clipper.exe	schtasks.exe
PID 2816 wrote to memory of 1920	2816	Clipper.exe	schtasks.exe
PID 2816 wrote to memory of 492	2816	Clipper.exe	WinService.exe
PID 2816 wrote to memory of 492	2816	Clipper.exe	WinService.exe
PID 3304 wrote to memory of 3628	3304	1111.exe	cmd.exe
PID 3304 wrote to memory of 3628	3304	1111.exe	cmd.exe
PID 3304 wrote to memory of 3628	3304	1111.exe	cmd.exe
PID 3628 wrote to memory of 1896	3628	cmd.exe	PING.EXE
PID 3628 wrote to memory of 1896	3628	cmd.exe	PING.EXE
PID 3628 wrote to memory of 1896	3628	cmd.exe	PING.EXE

C:\Users\Admin\AppData\Local\Temp\VyprVPN.exe
"C:\Users\Admin\AppData\Local\Temp\VyprVPN.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:540

C:\Users\Admin\AppData\Roaming\1337\joinResult.exe
"C:\Users\Admin\AppData\Roaming\1337\joinResult.exe"
2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:3772

C:\Users\Admin\AppData\Roaming\1337\1111.exe
"C:\Users\Admin\AppData\Roaming\1337\1111.exe"
3⤵
- Executes dropped EXE
- Checks computer location settings
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3304

C:\Windows\SysWOW64\cmd.exe
cmd.exe /C ping 1.1.1.1 -n 3 -w 3000 > Nul & Del /f /q "C:\Users\Admin\AppData\Roaming\1337\1111.exe"
4⤵
- Suspicious use of WriteProcessMemory
PID:3628

C:\Windows\SysWOW64\PING.EXE
ping 1.1.1.1 -n 3 -w 3000
5⤵
- Runs ping.exe
PID:1896

C:\Users\Admin\AppData\Roaming\1337\Clipper.exe
"C:\Users\Admin\AppData\Roaming\1337\Clipper.exe"
3⤵
- Modifies WinLogon for persistence
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2816

C:\Windows\System32\schtasks.exe
"C:\Windows\System32\schtasks.exe" /create /sc MINUTE /mo 1 /tn "Windows Service" /tr "C:\Users\Admin\WinService.exe" /f
4⤵
- Creates scheduled task(s)
PID:1920

C:\Users\Admin\WinService.exe
"C:\Users\Admin\WinService.exe"
4⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:492

C:\Users\Admin\AppData\Roaming\1337\VyprVPN.exe
"C:\Users\Admin\AppData\Roaming\1337\VyprVPN.exe"
2⤵
- Executes dropped EXE
PID:3120

C:\Users\Admin\WinService.exe
C:\Users\Admin\WinService.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2024

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Winlogon Helper DLL

T1004

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Modify Registry

T1112

Credential Access

Credentials in Files

T1081

Discovery

Query Registry

T1012

System Information Discovery

T1082

Remote System Discovery

T1018

Lateral Movement

Collection

Data from Local System

T1005

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\1337\1111.exe

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C:\Users\Admin\AppData\Roaming\1337\1111.exe

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C:\Users\Admin\AppData\Roaming\1337\Clipper.exe

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C:\Users\Admin\AppData\Roaming\1337\Clipper.exe

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C:\Users\Admin\AppData\Roaming\1337\VyprVPN.exe

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C:\Users\Admin\AppData\Roaming\1337\VyprVPN.exe

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C:\Users\Admin\AppData\Roaming\1337\joinResult.exe
MD5
79022fbafee9fe740a5230f87bd33171

SHA1
42bf0f7bf41009fd0009535a8b1162cbe60dce6f

SHA256
640c30cfa519be11c02c4e51bf18979a93266887cc9ef19076b3d0f1f20528b6

SHA512
48e0d4a18d99dce4398de73895a157e13293115b52ee5158f9ea6fc73c4d5f4133e1cebba14ff5482b8c4f7dfeebfe3b003df1caf351314f1cc16944818df4b3

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C:\Users\Admin\AppData\Roaming\1337\joinResult.exe
MD5
79022fbafee9fe740a5230f87bd33171

SHA1
42bf0f7bf41009fd0009535a8b1162cbe60dce6f

SHA256
640c30cfa519be11c02c4e51bf18979a93266887cc9ef19076b3d0f1f20528b6

SHA512
48e0d4a18d99dce4398de73895a157e13293115b52ee5158f9ea6fc73c4d5f4133e1cebba14ff5482b8c4f7dfeebfe3b003df1caf351314f1cc16944818df4b3

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C:\Users\Admin\WinService.exe

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C:\Users\Admin\WinService.exe

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C:\Users\Admin\WinService.exe

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\Users\Admin\AppData\Local\Temp\nsqA0CC.tmp\System.dll

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\Users\Admin\AppData\Local\Temp\nsz9DAF.tmp\System.dll

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memory/492-25-0x00007FF9A7730000-0x00007FF9A811C000-memory.dmp

Filesize
9.9MB

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memory/492-22-0x0000000000000000-mapping.dmp

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memory/1896-34-0x0000000000000000-mapping.dmp

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memory/1920-21-0x0000000000000000-mapping.dmp

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memory/2024-38-0x00007FF9A77D0000-0x00007FF9A81BC000-memory.dmp

Filesize
9.9MB

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memory/2816-14-0x00007FF9A7730000-0x00007FF9A811C000-memory.dmp

Filesize
9.9MB

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memory/2816-19-0x0000000000420000-0x0000000000421000-memory.dmp

Filesize
4KB

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memory/2816-11-0x0000000000000000-mapping.dmp

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memory/3120-18-0x00000000731F0000-0x00000000738DE000-memory.dmp

Filesize
6.9MB

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memory/3120-35-0x0000000005540000-0x0000000005541000-memory.dmp

Filesize
4KB

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memory/3120-4-0x0000000000000000-mapping.dmp

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memory/3120-36-0x0000000005840000-0x0000000005841000-memory.dmp

Filesize
4KB

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memory/3120-28-0x0000000000A10000-0x0000000000A11000-memory.dmp

Filesize
4KB

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memory/3120-30-0x00000000055A0000-0x00000000055A1000-memory.dmp

Filesize
4KB

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memory/3120-31-0x0000000005B40000-0x0000000005B41000-memory.dmp

Filesize
4KB

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memory/3120-32-0x00000000056E0000-0x00000000056E1000-memory.dmp

Filesize
4KB

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memory/3304-8-0x0000000000000000-mapping.dmp

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memory/3304-16-0x00000000038E0000-0x00000000038E1000-memory.dmp

Filesize
4KB

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memory/3304-17-0x0000000003AE0000-0x0000000003AE1000-memory.dmp

Filesize
4KB

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memory/3304-15-0x00000000038E0000-0x00000000038E1000-memory.dmp

Filesize
4KB

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memory/3628-33-0x0000000000000000-mapping.dmp

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memory/3772-1-0x0000000000000000-mapping.dmp

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