8d7bc3d7175f3d25eb9897a0c2677f3a27c974f75ead7fbe992a087876579eb0

General

Target

8d7bc3d7175f3d25eb9897a0c2677f3a27c974f75ead7fbe992a087876579eb0N.exe
Size

78KB
MD5

29224d003ac3618539644371a3f401c0
SHA1

d56ba65ae08aaabee6f1cec018d26eba105295a4
SHA256

8d7bc3d7175f3d25eb9897a0c2677f3a27c974f75ead7fbe992a087876579eb0
SHA512

9ed900748293739a914107e20926be153972164fdb72f6acecb98cd7a72e4d31e02aa977dd8c22d5a1e54245678a8f5eeb5c46b635bdfeac6b1c192290b493c9
SSDEEP

1536:EupTX/isjATD5vo8fTmQ0+s932FgDcKnvtqMjL7jGQi46aFJ:fTXqM8Ddo8fsvGFgIKn1qw/GQi46w

Score

10^/10

adware discovery persistence stealer upx

Malware Config

Signatures

Modifies WinLogon for persistence 2 TTPs 2 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "Explorer.exe"	8d7bc3d7175f3d25eb9897a0c2677f3a27c974f75ead7fbe992a087876579eb0N.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,"	8d7bc3d7175f3d25eb9897a0c2677f3a27c974f75ead7fbe992a087876579eb0N.exe

Drops file in Drivers directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\drivers\spools.exe	8d7bc3d7175f3d25eb9897a0c2677f3a27c974f75ead7fbe992a087876579eb0N.exe
File opened for modification	C:\Windows\SysWOW64\drivers\spools.exe	8d7bc3d7175f3d25eb9897a0c2677f3a27c974f75ead7fbe992a087876579eb0N.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Schedule\ImagePath = "C:\\Windows\\system32\\drivers\\spools.exe"	8d7bc3d7175f3d25eb9897a0c2677f3a27c974f75ead7fbe992a087876579eb0N.exe

Modifies system executable filetype association 2 TTPs 1 IoCs

persistence

Modify Registry

T1112

Change Default File Association

T1546.001

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\SysWow64\\drivers\\spools.exe \"%1\" %*"	8d7bc3d7175f3d25eb9897a0c2677f3a27c974f75ead7fbe992a087876579eb0N.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1846800975-3917212583-2893086201-1000\Software\Microsoft\Windows\CurrentVersion\Run\autoload = "C:\\Users\\Admin\\cftmon.exe"	8d7bc3d7175f3d25eb9897a0c2677f3a27c974f75ead7fbe992a087876579eb0N.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\ntuser = "C:\\Windows\\system32\\drivers\\spools.exe"	8d7bc3d7175f3d25eb9897a0c2677f3a27c974f75ead7fbe992a087876579eb0N.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\autoload = "C:\\Users\\Admin\\cftmon.exe"	8d7bc3d7175f3d25eb9897a0c2677f3a27c974f75ead7fbe992a087876579eb0N.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1846800975-3917212583-2893086201-1000\Software\Microsoft\Windows\CurrentVersion\Run\ntuser = "C:\\Windows\\system32\\drivers\\spools.exe"	8d7bc3d7175f3d25eb9897a0c2677f3a27c974f75ead7fbe992a087876579eb0N.exe

Installs/modifies Browser Helper Object 2 TTPs 4 IoCs

BHOs are DLL modules which act as plugins for Internet Explorer.

stealer adware

Modify Registry

T1112

Browser Extensions

T1176

description	ioc	Process
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{18DF081C-E8AD-4283-A596-FA578C2EBDC3}	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{72853161-30C5-4D22-B7F9-0BBC1D38A37E}	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{B4F3A835-0E21-4959-BA22-42B3008E02FF}	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects	reg.exe

Modifies WinLogon 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\UIHost = "logonui.exe"	8d7bc3d7175f3d25eb9897a0c2677f3a27c974f75ead7fbe992a087876579eb0N.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2636-0-0x0000000000400000-0x000000000040E000-memory.dmp	upx
behavioral1/files/0x000d00000001226b-5.dat	upx
behavioral1/memory/2636-23-0x0000000000400000-0x000000000040E000-memory.dmp	upx

System Location Discovery: System Language Discovery 1 TTPs 2 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	8d7bc3d7175f3d25eb9897a0c2677f3a27c974f75ead7fbe992a087876579eb0N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe

Modifies registry class 1 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\SysWow64\\drivers\\spools.exe \"%1\" %*"	8d7bc3d7175f3d25eb9897a0c2677f3a27c974f75ead7fbe992a087876579eb0N.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2636 wrote to memory of 2744	2636	8d7bc3d7175f3d25eb9897a0c2677f3a27c974f75ead7fbe992a087876579eb0N.exe	30
PID 2636 wrote to memory of 2744	2636	8d7bc3d7175f3d25eb9897a0c2677f3a27c974f75ead7fbe992a087876579eb0N.exe	30
PID 2636 wrote to memory of 2744	2636	8d7bc3d7175f3d25eb9897a0c2677f3a27c974f75ead7fbe992a087876579eb0N.exe	30
PID 2636 wrote to memory of 2744	2636	8d7bc3d7175f3d25eb9897a0c2677f3a27c974f75ead7fbe992a087876579eb0N.exe	30

C:\Users\Admin\AppData\Local\Temp\8d7bc3d7175f3d25eb9897a0c2677f3a27c974f75ead7fbe992a087876579eb0N.exe
"C:\Users\Admin\AppData\Local\Temp\8d7bc3d7175f3d25eb9897a0c2677f3a27c974f75ead7fbe992a087876579eb0N.exe"
1⤵
- Modifies WinLogon for persistence
- Drops file in Drivers directory
- Sets service image path in registry
- Modifies system executable filetype association
- Adds Run key to start application
- Modifies WinLogon
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:2636
- C:\Windows\SysWOW64\reg.exe
  reg delete "HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects" /f
  2⤵
  - Installs/modifies Browser Helper Object
  - System Location Discovery: System Language Discovery
  PID:2744

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

4

T1547

Registry Run Keys / Startup Folder

2

T1547.001

Winlogon Helper DLL

Browser Extensions

Event Triggered Execution

1

T1546

Change Default File Association

1

T1546.001

Privilege Escalation

Boot or Logon Autostart Execution

4

T1547

Registry Run Keys / Startup Folder

2

T1547.001

Winlogon Helper DLL

2

T1547.004

Event Triggered Execution

1

T1546

Change Default File Association

1

T1546.001

Defense Evasion

Modify Registry

6

T1112

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\SysWOW64\drivers\spools.exe

Filesize
90KB

MD5
cb9853a340ddb4d8c910a6b2c32c7724

SHA1
e1dfd48b3049529869ddaaf2f5631aabb2cc01ad

SHA256
4522e1d11856617d1bd15acc26c8e1aabdb6b7899ce34c639ba4b93a24314932

SHA512
a33ed106d97d90f63d56dc11ab35d5bf86be2bcac672be7dbbf487a46ec1597188749ccbc2a897df91d6ea108813b3cc0b6c40f3799a2bbfc52414d87a3777a2

Download Submit
memory/2636-0-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/2636-23-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads