ab9f4366526b1706ad5bdfbfb1f4f6b76ed432664d83f427d0b66cfa52a6af31

General

Target

ab9f4366526b1706ad5bdfbfb1f4f6b76ed432664d83f427d0b66cfa52a6af31N.exe
Size

989KB
MD5

a783f78a7b3e379346fc9790444b3c10
SHA1

ad3113270d43cfc15318456b0fa86ab5e93f7bff
SHA256

ab9f4366526b1706ad5bdfbfb1f4f6b76ed432664d83f427d0b66cfa52a6af31
SHA512

72c3b3c5950893cad7a9e970023645d66135de4eaa87fdad7c39767ee88587d52dacd4de362a0c900fe742bf76572b3a4c340f57310e083dd518162004a8f0ab
SSDEEP

24576:v6Zv2ivhBVnFys7xP86LkRCwPYfuukvDtiflQRTVldd:vE2ivhQs7dLkRumsqVl

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\{EA07E8EF-8B9A-11D5-EBA1-F78EEEEEE983}	spoolsv.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{EA07E8EF-8B9A-11D5-EBA1-F78EEEEEE983}\StubPath = "mssnm32.exe"	spoolsv.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{EA07E8EF-8B9A-11D5-EBA1-F78EEEEEE983}	ab9f4366526b1706ad5bdfbfb1f4f6b76ed432664d83f427d0b66cfa52a6af31N.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{EA07E8EF-8B9A-11D5-EBA1-F78EEEEEE983}\StubPath = "mssnm32.exe"	ab9f4366526b1706ad5bdfbfb1f4f6b76ed432664d83f427d0b66cfa52a6af31N.exe

Executes dropped EXE 1 IoCs

pid	Process
2688	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\" %*"	ab9f4366526b1706ad5bdfbfb1f4f6b76ed432664d83f427d0b66cfa52a6af31N.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"	ab9f4366526b1706ad5bdfbfb1f4f6b76ed432664d83f427d0b66cfa52a6af31N.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3290804112-2823094203-3137964600-1000\Software\Microsoft\Windows\CurrentVersion\Run\VCL = "vcl32.exe"	ab9f4366526b1706ad5bdfbfb1f4f6b76ed432664d83f427d0b66cfa52a6af31N.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\VCL = "vcl32.exe"	spoolsv.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3290804112-2823094203-3137964600-1000\Software\Microsoft\Windows\CurrentVersion\Run\VCL = "vcl32.exe"	spoolsv.exe

Drops file in System32 directory 6 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\concp32.exe	ab9f4366526b1706ad5bdfbfb1f4f6b76ed432664d83f427d0b66cfa52a6af31N.exe
File opened for modification	C:\Windows\SysWOW64\concp32.exe	ab9f4366526b1706ad5bdfbfb1f4f6b76ed432664d83f427d0b66cfa52a6af31N.exe
File created	C:\Windows\SysWOW64\vcl32.exe	ab9f4366526b1706ad5bdfbfb1f4f6b76ed432664d83f427d0b66cfa52a6af31N.exe
File opened for modification	C:\Windows\SysWOW64\vcl32.exe	ab9f4366526b1706ad5bdfbfb1f4f6b76ed432664d83f427d0b66cfa52a6af31N.exe
File created	C:\Windows\SysWOW64\mssnm32.exe	ab9f4366526b1706ad5bdfbfb1f4f6b76ed432664d83f427d0b66cfa52a6af31N.exe
File opened for modification	C:\Windows\SysWOW64\mssnm32.exe	ab9f4366526b1706ad5bdfbfb1f4f6b76ed432664d83f427d0b66cfa52a6af31N.exe

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral1/memory/3012-0-0x0000000000400000-0x0000000000439000-memory.dmp	upx
behavioral1/files/0x00070000000193d9-5.dat	upx
behavioral1/memory/3012-13-0x0000000000220000-0x0000000000259000-memory.dmp	upx
behavioral1/memory/3012-15-0x0000000000400000-0x0000000000439000-memory.dmp	upx
behavioral1/files/0x0032000000019382-14.dat	upx
behavioral1/memory/2688-16-0x0000000000400000-0x0000000000439000-memory.dmp	upx

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\spoolsv.exe	ab9f4366526b1706ad5bdfbfb1f4f6b76ed432664d83f427d0b66cfa52a6af31N.exe
File opened for modification	C:\Windows\spoolsv.exe	ab9f4366526b1706ad5bdfbfb1f4f6b76ed432664d83f427d0b66cfa52a6af31N.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	ab9f4366526b1706ad5bdfbfb1f4f6b76ed432664d83f427d0b66cfa52a6af31N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	spoolsv.exe

Modifies registry class 12 IoCs

description	ioc	Process
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{EA07E8EF-8B9A-11D5-EBA1-F78EEEEEE983}\u0 = 658663d26f8bad325217a06063847056939f558d910ed252e05dd0113550f7fc0f4da82ff73a0681ba604c2d4f23269f	spoolsv.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{EA07E8EF-8B9A-11D5-EBA1-F78EEEEEE983}\u1 = 551d2e0658054ba756fd3798fea5ffca42865cb762a31639dabd7f2cca44e226	spoolsv.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{EA07E8EF-8B9A-11D5-EBA1-F78EEEEEE983}\u2 = a54a6b702f92fdf2acd57599e2ae1608015dff41aa020117fc9bd8e2dcf4340f3fa61eb55d6f28597df90602703809d4	spoolsv.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\SysWow64\\concp32.exe \"%1\" %*"	spoolsv.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{EA07E8EF-8B9A-11D5-EBA1-F78EEEEEE983}	ab9f4366526b1706ad5bdfbfb1f4f6b76ed432664d83f427d0b66cfa52a6af31N.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\SysWow64\\concp32.exe \"%1\" %*"	ab9f4366526b1706ad5bdfbfb1f4f6b76ed432664d83f427d0b66cfa52a6af31N.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{EA07E8EF-8B9A-11D5-EBA1-F78EEEEEE983}	spoolsv.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{EA07E8EF-8B9A-11D5-EBA1-F78EEEEEE983}\InprocServer32	spoolsv.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{EA07E8EF-8B9A-11D5-EBA1-F78EEEEEE983}\InprocServer32	ab9f4366526b1706ad5bdfbfb1f4f6b76ed432664d83f427d0b66cfa52a6af31N.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{EA07E8EF-8B9A-11D5-EBA1-F78EEEEEE983}\sm = 01b8ec350471bd332433eee476ebe1f3	ab9f4366526b1706ad5bdfbfb1f4f6b76ed432664d83f427d0b66cfa52a6af31N.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{EA07E8EF-8B9A-11D5-EBA1-F78EEEEEE983}\ax = 7792f5906405fd71fe5d4fcde19a0e56	ab9f4366526b1706ad5bdfbfb1f4f6b76ed432664d83f427d0b66cfa52a6af31N.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{EA07E8EF-8B9A-11D5-EBA1-F78EEEEEE983}\v = "165"	spoolsv.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
3012	ab9f4366526b1706ad5bdfbfb1f4f6b76ed432664d83f427d0b66cfa52a6af31N.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 3012 wrote to memory of 2688	3012	ab9f4366526b1706ad5bdfbfb1f4f6b76ed432664d83f427d0b66cfa52a6af31N.exe	30
PID 3012 wrote to memory of 2688	3012	ab9f4366526b1706ad5bdfbfb1f4f6b76ed432664d83f427d0b66cfa52a6af31N.exe	30
PID 3012 wrote to memory of 2688	3012	ab9f4366526b1706ad5bdfbfb1f4f6b76ed432664d83f427d0b66cfa52a6af31N.exe	30
PID 3012 wrote to memory of 2688	3012	ab9f4366526b1706ad5bdfbfb1f4f6b76ed432664d83f427d0b66cfa52a6af31N.exe	30

C:\Users\Admin\AppData\Local\Temp\ab9f4366526b1706ad5bdfbfb1f4f6b76ed432664d83f427d0b66cfa52a6af31N.exe
"C:\Users\Admin\AppData\Local\Temp\ab9f4366526b1706ad5bdfbfb1f4f6b76ed432664d83f427d0b66cfa52a6af31N.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:3012
- 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:2688

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Windows\SysWOW64\concp32.exe

Filesize
998KB

MD5
e6b7d2f7c720851f1c760502ddbe793d

SHA1
2ec1411c451c623077f013336744fe03ebaf1a2b

SHA256
0c485a8b1ccd33f9d9aef0bb6f07ddd181ca61e4d828d05c32bb17ceac3b373f

SHA512
72f9941dc71e57a04ec55894bfc49cfc50976baa1925a299eae2abd20512db25ff2d2f02e83cc2f04f60d868858964efba0c679f97e47ca16df05460789d5dd5

Download Submit
C:\Windows\spoolsv.exe

Filesize
991KB

MD5
38d962ffb180dd694ce3dbb1a41e7030

SHA1
baa57049caef229e9bb685eb2a27ead2ccded841

SHA256
82f7836d6d2f498a3d0b72432080962e37dd69079d51a7e34530e065e6844248

SHA512
207b29c6383c26a2576bc412acdb27f8865e414c8549421210f1df14896f8ad082be081497189d7b02122c7e818d8ad0217932957faabd450c1f5d89b78858de

Download Submit
memory/2688-16-0x0000000000400000-0x0000000000439000-memory.dmp

Filesize
228KB

Download
memory/3012-0-0x0000000000400000-0x0000000000439000-memory.dmp

Filesize
228KB

Download
memory/3012-13-0x0000000000220000-0x0000000000259000-memory.dmp

Filesize
228KB

Download
memory/3012-15-0x0000000000400000-0x0000000000439000-memory.dmp

Filesize
228KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads