1f4ba905eea3da2b39b4a3effaeca8a737d325a474ac41bf5d81e70633916b2c

General

Target

94754cefc063f4714ff41d4159837cf0N.exe
Size

678KB
MD5

94754cefc063f4714ff41d4159837cf0
SHA1

0415810fd50ea45e09958389eec8823c469d5523
SHA256

1f4ba905eea3da2b39b4a3effaeca8a737d325a474ac41bf5d81e70633916b2c
SHA512

15c252a4d3fe8516e67a60c23659ddfbc35f06063e51cf2993c5777a41bd48923c6a16458af29aa11295e3aa43ca6327eb03926ef99484f9a431a4d0e4bfce08
SSDEEP

12288:7tKe6Zv23YLVFhBsC8iFHs+hsuQXIQRUP/g8t55VGGWEs4UE0LP:v6Zv2ivhBVnFvh5Q44UP48eEDUE0LP

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\{ECD440E3-8B9A-11D5-EBA1-F78EEEEEE983}	94754cefc063f4714ff41d4159837cf0N.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{ECD440E3-8B9A-11D5-EBA1-F78EEEEEE983}\StubPath = "msfuc32.exe"	94754cefc063f4714ff41d4159837cf0N.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{ECD440E3-8B9A-11D5-EBA1-F78EEEEEE983}	spoolsv.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{ECD440E3-8B9A-11D5-EBA1-F78EEEEEE983}\StubPath = "msfuc32.exe"	spoolsv.exe

Executes dropped EXE 1 IoCs

pid	Process
2700	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\" %*"	94754cefc063f4714ff41d4159837cf0N.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\SysWow64\\concp32.exe \"%1\" %*"	spoolsv.exe

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2532-0-0x0000000000400000-0x0000000000439000-memory.dmp	upx
behavioral1/files/0x0007000000018b6e-5.dat	upx
behavioral1/memory/2532-15-0x0000000000400000-0x0000000000439000-memory.dmp	upx
behavioral1/memory/2700-16-0x0000000000400000-0x0000000000439000-memory.dmp	upx
behavioral1/files/0x0018000000018b3e-14.dat	upx
behavioral1/memory/2700-17-0x0000000000400000-0x0000000000439000-memory.dmp	upx

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"	94754cefc063f4714ff41d4159837cf0N.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2212144002-1172735686-1556890956-1000\Software\Microsoft\Windows\CurrentVersion\Run\VCL = "vcl32.exe"	94754cefc063f4714ff41d4159837cf0N.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\VCL = "vcl32.exe"	spoolsv.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2212144002-1172735686-1556890956-1000\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	94754cefc063f4714ff41d4159837cf0N.exe
File created	C:\Windows\SysWOW64\vcl32.exe	94754cefc063f4714ff41d4159837cf0N.exe
File opened for modification	C:\Windows\SysWOW64\vcl32.exe	94754cefc063f4714ff41d4159837cf0N.exe
File created	C:\Windows\SysWOW64\msfuc32.exe	94754cefc063f4714ff41d4159837cf0N.exe
File opened for modification	C:\Windows\SysWOW64\msfuc32.exe	94754cefc063f4714ff41d4159837cf0N.exe
File created	C:\Windows\SysWOW64\concp32.exe	94754cefc063f4714ff41d4159837cf0N.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\spoolsv.exe	94754cefc063f4714ff41d4159837cf0N.exe
File opened for modification	C:\Windows\spoolsv.exe	94754cefc063f4714ff41d4159837cf0N.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	spoolsv.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	94754cefc063f4714ff41d4159837cf0N.exe

Modifies registry class 12 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{ECD440E3-8B9A-11D5-EBA1-F78EEEEEE983}\InprocServer32	94754cefc063f4714ff41d4159837cf0N.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{ECD440E3-8B9A-11D5-EBA1-F78EEEEEE983}\ax = df42404730a7698866b1248c6d16768f	94754cefc063f4714ff41d4159837cf0N.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{ECD440E3-8B9A-11D5-EBA1-F78EEEEEE983}\u0 = 658663d26f8bad325217a06063847056939f558d910ed252e05dd0113550f7fc0f4da82ff73a0681ba604c2d4f23269f	spoolsv.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{ECD440E3-8B9A-11D5-EBA1-F78EEEEEE983}\u1 = 551d2e0658054ba756fd3798fea5ffca42865cb762a31639dabd7f2cca44e226	spoolsv.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{ECD440E3-8B9A-11D5-EBA1-F78EEEEEE983}\v = "165"	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\{ECD440E3-8B9A-11D5-EBA1-F78EEEEEE983}	94754cefc063f4714ff41d4159837cf0N.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{ECD440E3-8B9A-11D5-EBA1-F78EEEEEE983}\sm = 01b8ec350471bd332433eee476ebe1f3	94754cefc063f4714ff41d4159837cf0N.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\SysWow64\\concp32.exe \"%1\" %*"	94754cefc063f4714ff41d4159837cf0N.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{ECD440E3-8B9A-11D5-EBA1-F78EEEEEE983}	spoolsv.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{ECD440E3-8B9A-11D5-EBA1-F78EEEEEE983}\InprocServer32	spoolsv.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{ECD440E3-8B9A-11D5-EBA1-F78EEEEEE983}\u2 = a54a6b702f92fdf2acd57599e2ae1608015dff41aa020117fc9bd8e2dcf4340f3fa61eb55d6f28597df90602703809d4	spoolsv.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2532	94754cefc063f4714ff41d4159837cf0N.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2532 wrote to memory of 2700	2532	94754cefc063f4714ff41d4159837cf0N.exe	29
PID 2532 wrote to memory of 2700	2532	94754cefc063f4714ff41d4159837cf0N.exe	29
PID 2532 wrote to memory of 2700	2532	94754cefc063f4714ff41d4159837cf0N.exe	29
PID 2532 wrote to memory of 2700	2532	94754cefc063f4714ff41d4159837cf0N.exe	29

C:\Users\Admin\AppData\Local\Temp\94754cefc063f4714ff41d4159837cf0N.exe
"C:\Users\Admin\AppData\Local\Temp\94754cefc063f4714ff41d4159837cf0N.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:2532
- 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:2700

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
684KB

MD5
0ec499c8944fab962a1780eb01aa02ab

SHA1
03d39dc07deb562f6cdac9191c9180620408aeba

SHA256
5033920abf84fe6ff36f2eda1d8a3555251c45ee48a750d16c467d064620a86f

SHA512
a6925aefad4d3b855507c16d9498ec11c168d2892522f81d0d9e459dd6fdebda24dd857279e6006ad831afd832120b9738bf23da3b274b20f979d4b43f1cf594

Download Submit
C:\Windows\spoolsv.exe

Filesize
681KB

MD5
80835a6aea9721babbabf28567599924

SHA1
c19f8d4e7ce5d9661f51825f63bbb6d93dec9815

SHA256
015c228de0347a6600a0b82c21896f31d91ab52fe9d3f0b7f9d6a8f96a17c9b4

SHA512
3b01ef7f6ad1cad1be7cd8c33d7f1a36b79ac2be919e83123d9031057d17a727f6950697e0672b66c5f4950d9a0f891e7ef8e279eec6e4e8c4509f5eb74553c6

Download Submit
memory/2532-0-0x0000000000400000-0x0000000000439000-memory.dmp

Filesize
228KB

Download
memory/2532-13-0x00000000002D0000-0x0000000000309000-memory.dmp

Filesize
228KB

Download
memory/2532-15-0x0000000000400000-0x0000000000439000-memory.dmp

Filesize
228KB

Download
memory/2700-16-0x0000000000400000-0x0000000000439000-memory.dmp

Filesize
228KB

Download
memory/2700-17-0x0000000000400000-0x0000000000439000-memory.dmp

Filesize
228KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads