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-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ntuser = "C:\\Windows\\system32\\drivers\\spools.exe"	8d7bc3d7175f3d25eb9897a0c2677f3a27c974f75ead7fbe992a087876579eb0N.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\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

Installs/modifies Browser Helper Object 2 TTPs 3 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\{1FD49718-1D00-4B19-AF5F-070AF6D5D54C}	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{31D09BA0-12F5-4CCE-BE8A-2923E76605DA}	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
behavioral2/memory/2260-0-0x0000000000400000-0x000000000040E000-memory.dmp	upx
behavioral2/files/0x0009000000023c98-4.dat	upx
behavioral2/memory/2260-14-0x0000000000400000-0x000000000040E000-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 3 IoCs

description	pid	Process	procid_target
PID 2260 wrote to memory of 2044	2260	8d7bc3d7175f3d25eb9897a0c2677f3a27c974f75ead7fbe992a087876579eb0N.exe	83
PID 2260 wrote to memory of 2044	2260	8d7bc3d7175f3d25eb9897a0c2677f3a27c974f75ead7fbe992a087876579eb0N.exe	83
PID 2260 wrote to memory of 2044	2260	8d7bc3d7175f3d25eb9897a0c2677f3a27c974f75ead7fbe992a087876579eb0N.exe	83

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:2260
- 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:2044

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:\Users\Admin\cftmon.exe

Filesize
90KB

MD5
116429d613ef14c20e05129e390f4d61

SHA1
0f3e1674eff85b89ab5bcde64a561e57ddd7e04b

SHA256
772579cec788ae99d4fa4ff6e71a5a8400168dd99b54dc16234c336cdae23982

SHA512
61a84f9fc4bcb4e4db53393b6c549dc842f2c8bcd42902cf2c12231dfe04cb15865d5c2a8fe15064cf8e2e4acfc070245d67f9a040f3cf63e7e0d8edcda3e6c2

Download Submit
memory/2260-0-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/2260-14-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads