0f13a23d66d29cece0735366d0801a41ea02e2e54cd20f9a64200116fa196559

General

Target

0f13a23d66d29cece0735366d0801a41ea02e2e54cd20f9a64200116fa196559N.exe
Size

1.0MB
MD5

6f9278ef68dc128dbfb5b26a2175ec80
SHA1

ab9f27efb21d8c374f029b731a7d72fc2427130d
SHA256

0f13a23d66d29cece0735366d0801a41ea02e2e54cd20f9a64200116fa196559
SHA512

aa3ae4019170a7aeff8b8371386565b4cbb0dba870b0a6cff8ce2cc0e9ccde19c24283fec0459994ec0c898613f6dc9cf66e1f6c7c8917480593072480cd7935
SSDEEP

24576:v6Zv2ivhBVnFys7xP86LkRCwPYfuukvDtiflQBU3jYY5QH:vE2ivhQs7dLkRumsUU3eH

Score

8^/10

discovery persistence upx

Malware Config

Signatures

Boot or Logon Autostart Execution: Active Setup 2 TTPs 4 IoCs

Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

persistence

Active Setup

T1547.014

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{E38DA6F1-8B9A-11D5-EBA1-F78EEEEEE983}	0f13a23d66d29cece0735366d0801a41ea02e2e54cd20f9a64200116fa196559N.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{E38DA6F1-8B9A-11D5-EBA1-F78EEEEEE983}\StubPath = "mswai32.exe"	0f13a23d66d29cece0735366d0801a41ea02e2e54cd20f9a64200116fa196559N.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{E38DA6F1-8B9A-11D5-EBA1-F78EEEEEE983}	spoolsv.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{E38DA6F1-8B9A-11D5-EBA1-F78EEEEEE983}\StubPath = "mswai32.exe"	spoolsv.exe

Executes dropped EXE 1 IoCs

pid	Process
2696	spoolsv.exe

Modifies system executable filetype association 2 TTPs 2 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\\concp32.exe \"%1\" %*"	0f13a23d66d29cece0735366d0801a41ea02e2e54cd20f9a64200116fa196559N.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\SysWow64\\concp32.exe \"%1\" %*"	spoolsv.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\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\VCL = "vcl32.exe"	0f13a23d66d29cece0735366d0801a41ea02e2e54cd20f9a64200116fa196559N.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Windows\CurrentVersion\Run\VCL = "vcl32.exe"	0f13a23d66d29cece0735366d0801a41ea02e2e54cd20f9a64200116fa196559N.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\VCL = "vcl32.exe"	spoolsv.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Windows\CurrentVersion\Run\VCL = "vcl32.exe"	spoolsv.exe

Drops file in System32 directory 6 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\concp32.exe	0f13a23d66d29cece0735366d0801a41ea02e2e54cd20f9a64200116fa196559N.exe
File created	C:\Windows\SysWOW64\vcl32.exe	0f13a23d66d29cece0735366d0801a41ea02e2e54cd20f9a64200116fa196559N.exe
File opened for modification	C:\Windows\SysWOW64\vcl32.exe	0f13a23d66d29cece0735366d0801a41ea02e2e54cd20f9a64200116fa196559N.exe
File created	C:\Windows\SysWOW64\mswai32.exe	0f13a23d66d29cece0735366d0801a41ea02e2e54cd20f9a64200116fa196559N.exe
File opened for modification	C:\Windows\SysWOW64\mswai32.exe	0f13a23d66d29cece0735366d0801a41ea02e2e54cd20f9a64200116fa196559N.exe
File created	C:\Windows\SysWOW64\concp32.exe	0f13a23d66d29cece0735366d0801a41ea02e2e54cd20f9a64200116fa196559N.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2196-0-0x0000000000400000-0x0000000000439000-memory.dmp	upx
behavioral1/files/0x00070000000186de-5.dat	upx
behavioral1/memory/2196-15-0x0000000000400000-0x0000000000439000-memory.dmp	upx
behavioral1/files/0x003c000000018654-14.dat	upx
behavioral1/memory/2696-16-0x0000000000400000-0x0000000000439000-memory.dmp	upx

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\spoolsv.exe	0f13a23d66d29cece0735366d0801a41ea02e2e54cd20f9a64200116fa196559N.exe
File created	C:\Windows\spoolsv.exe	0f13a23d66d29cece0735366d0801a41ea02e2e54cd20f9a64200116fa196559N.exe

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	0f13a23d66d29cece0735366d0801a41ea02e2e54cd20f9a64200116fa196559N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	spoolsv.exe

Modifies registry class 12 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{E38DA6F1-8B9A-11D5-EBA1-F78EEEEEE983}\v = "165"	spoolsv.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{E38DA6F1-8B9A-11D5-EBA1-F78EEEEEE983}\InprocServer32	0f13a23d66d29cece0735366d0801a41ea02e2e54cd20f9a64200116fa196559N.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{E38DA6F1-8B9A-11D5-EBA1-F78EEEEEE983}\ax = 566425468e70b133c9500600f989cffe	0f13a23d66d29cece0735366d0801a41ea02e2e54cd20f9a64200116fa196559N.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\SysWow64\\concp32.exe \"%1\" %*"	0f13a23d66d29cece0735366d0801a41ea02e2e54cd20f9a64200116fa196559N.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{E38DA6F1-8B9A-11D5-EBA1-F78EEEEEE983}	spoolsv.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{E38DA6F1-8B9A-11D5-EBA1-F78EEEEEE983}\InprocServer32	spoolsv.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{E38DA6F1-8B9A-11D5-EBA1-F78EEEEEE983}\u2 = a54a6b702f92fdf2acd57599e2ae1608015dff41aa020117fc9bd8e2dcf4340f3fa61eb55d6f28597df90602703809d4	spoolsv.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{E38DA6F1-8B9A-11D5-EBA1-F78EEEEEE983}	0f13a23d66d29cece0735366d0801a41ea02e2e54cd20f9a64200116fa196559N.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{E38DA6F1-8B9A-11D5-EBA1-F78EEEEEE983}\sm = 01b8ec350471bd332433eee476ebe1f3	0f13a23d66d29cece0735366d0801a41ea02e2e54cd20f9a64200116fa196559N.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{E38DA6F1-8B9A-11D5-EBA1-F78EEEEEE983}\u0 = 658663d26f8bad325217a06063847056939f558d910ed252e05dd0113550f7fc0f4da82ff73a0681ba604c2d4f23269f	spoolsv.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{E38DA6F1-8B9A-11D5-EBA1-F78EEEEEE983}\u1 = 551d2e0658054ba756fd3798fea5ffca42865cb762a31639dabd7f2cca44e226	spoolsv.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\SysWow64\\concp32.exe \"%1\" %*"	spoolsv.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2196	0f13a23d66d29cece0735366d0801a41ea02e2e54cd20f9a64200116fa196559N.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2196 wrote to memory of 2696	2196	0f13a23d66d29cece0735366d0801a41ea02e2e54cd20f9a64200116fa196559N.exe	31
PID 2196 wrote to memory of 2696	2196	0f13a23d66d29cece0735366d0801a41ea02e2e54cd20f9a64200116fa196559N.exe	31
PID 2196 wrote to memory of 2696	2196	0f13a23d66d29cece0735366d0801a41ea02e2e54cd20f9a64200116fa196559N.exe	31
PID 2196 wrote to memory of 2696	2196	0f13a23d66d29cece0735366d0801a41ea02e2e54cd20f9a64200116fa196559N.exe	31

C:\Users\Admin\AppData\Local\Temp\0f13a23d66d29cece0735366d0801a41ea02e2e54cd20f9a64200116fa196559N.exe
"C:\Users\Admin\AppData\Local\Temp\0f13a23d66d29cece0735366d0801a41ea02e2e54cd20f9a64200116fa196559N.exe"
1⤵
- Boot or Logon Autostart Execution: Active Setup
- Modifies system executable filetype association
- Adds Run key to start application
- Drops file in System32 directory
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2196
- C:\Windows\spoolsv.exe
  C:\Windows\spoolsv.exe
  2⤵
  - Boot or Logon Autostart Execution: Active Setup
  - Executes dropped EXE
  - Modifies system executable filetype association
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  PID:2696

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

2

T1547

Active Setup

1

T1547.014

Registry Run Keys / Startup Folder

1

T1547.001

Event Triggered Execution

1

T1546

Change Default File Association

1

T1546.001

Privilege Escalation

Boot or Logon Autostart Execution

2

T1547

Active Setup

1

T1547.014

Registry Run Keys / Startup Folder

1

T1547.001

Event Triggered Execution

1

T1546

Change Default File Association

1

T1546.001

Defense Evasion

Modify Registry

3

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\concp32.exe

Filesize
1.0MB

MD5
750ebb1f0058953e5429534e0211f081

SHA1
ad13c3f75df27e438c4a34ea487d9279b5cb51f4

SHA256
faeec7c2a8ba97fc9da5994202c06d596fb2c31004d5701a07890a1b70c6697d

SHA512
20c68c67dd085f999ff094c9c6cb54d1f94a832679626838916b1aadf3d96b8f7a82734bf94542d0201e6fe04a62042b78ead920611ff0f001156dc86d92261b

Download Submit
C:\Windows\spoolsv.exe

Filesize
1.0MB

MD5
8aa29183db8734eba358f866c74188e5

SHA1
7eb9628a836e230e5f5c8abc0c1af78d16f072ba

SHA256
ed638cc2658256cbedddb07c7dc6305f3eb530511227a4205ec43c7c6062d8f0

SHA512
e2c4799c09c30137d95ba81474af1788f337ad99392b8ffcb1c6890d2ecac8070555d185d0429472d712096746a30109c6e05556566b5e7e427add1c7480d755

Download Submit
memory/2196-0-0x0000000000400000-0x0000000000439000-memory.dmp

Filesize
228KB

Download
memory/2196-13-0x00000000003C0000-0x00000000003F9000-memory.dmp

Filesize
228KB

Download
memory/2196-15-0x0000000000400000-0x0000000000439000-memory.dmp

Filesize
228KB

Download
memory/2696-16-0x0000000000400000-0x0000000000439000-memory.dmp

Filesize
228KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads