3fc99ab4ae6cd0e09ae7b63eaf34221d4464ff9eccbaa42f0eda00a3031d4bc0

General

Target

7b9d16e07d6d96e64e674b0a46c94580N.exe
Size

656KB
MD5

7b9d16e07d6d96e64e674b0a46c94580
SHA1

f0421b0c13dd924b6743944e400acd3c0044f7d5
SHA256

3fc99ab4ae6cd0e09ae7b63eaf34221d4464ff9eccbaa42f0eda00a3031d4bc0
SHA512

0a188f13c631aa9783f33e7061d89af3fd59c85618611c4a0e321861bf6e6dcf17fb9963fd1d0b1575eb880ccebe7668818ca5eefd295b8325084c4c9f5c25bb
SSDEEP

12288:7tKe6Zv23YLVFhBsC8iFHSs7xPY1f6HriPwU8mNCZQUEdsaj1k2CC9md:v6Zv2ivhBVnFys7xP86LkRCQsau2Y

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
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{AE8E334C-8B9A-11D5-EBA1-F78EEEEEE983}\StubPath = "msvan32.exe"	7b9d16e07d6d96e64e674b0a46c94580N.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{AE8E334C-8B9A-11D5-EBA1-F78EEEEEE983}	spoolsv.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{AE8E334C-8B9A-11D5-EBA1-F78EEEEEE983}\StubPath = "msvan32.exe"	spoolsv.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{AE8E334C-8B9A-11D5-EBA1-F78EEEEEE983}	7b9d16e07d6d96e64e674b0a46c94580N.exe

Executes dropped EXE 1 IoCs

pid	Process
1620	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\" %*"	spoolsv.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\SysWow64\\concp32.exe \"%1\" %*"	7b9d16e07d6d96e64e674b0a46c94580N.exe

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1620-15-0x0000000000400000-0x0000000000439000-memory.dmp	upx
behavioral1/files/0x0004000000004ed7-13.dat	upx
behavioral1/memory/1888-14-0x0000000000400000-0x0000000000439000-memory.dmp	upx
behavioral1/files/0x000600000001924b-5.dat	upx
behavioral1/memory/1888-0-0x0000000000400000-0x0000000000439000-memory.dmp	upx
behavioral1/memory/1620-16-0x0000000000400000-0x0000000000439000-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"	7b9d16e07d6d96e64e674b0a46c94580N.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3450744190-3404161390-554719085-1000\Software\Microsoft\Windows\CurrentVersion\Run\VCL = "vcl32.exe"	7b9d16e07d6d96e64e674b0a46c94580N.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\VCL = "vcl32.exe"	spoolsv.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3450744190-3404161390-554719085-1000\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\vcl32.exe	7b9d16e07d6d96e64e674b0a46c94580N.exe
File opened for modification	C:\Windows\SysWOW64\vcl32.exe	7b9d16e07d6d96e64e674b0a46c94580N.exe
File created	C:\Windows\SysWOW64\msvan32.exe	7b9d16e07d6d96e64e674b0a46c94580N.exe
File opened for modification	C:\Windows\SysWOW64\msvan32.exe	7b9d16e07d6d96e64e674b0a46c94580N.exe
File created	C:\Windows\SysWOW64\concp32.exe	7b9d16e07d6d96e64e674b0a46c94580N.exe
File opened for modification	C:\Windows\SysWOW64\concp32.exe	7b9d16e07d6d96e64e674b0a46c94580N.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\spoolsv.exe	7b9d16e07d6d96e64e674b0a46c94580N.exe
File opened for modification	C:\Windows\spoolsv.exe	7b9d16e07d6d96e64e674b0a46c94580N.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	7b9d16e07d6d96e64e674b0a46c94580N.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\exefile\shell\open\command\ = "C:\\Windows\\SysWow64\\concp32.exe \"%1\" %*"	spoolsv.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\SysWow64\\concp32.exe \"%1\" %*"	7b9d16e07d6d96e64e674b0a46c94580N.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{AE8E334C-8B9A-11D5-EBA1-F78EEEEEE983}\InprocServer32	spoolsv.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{AE8E334C-8B9A-11D5-EBA1-F78EEEEEE983}\u0 = 658663d26f8bad325217a06063847056939f558d910ed252e05dd0113550f7fc0f4da82ff73a0681ba604c2d4f23269f	spoolsv.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{AE8E334C-8B9A-11D5-EBA1-F78EEEEEE983}\u1 = 551d2e0658054ba756fd3798fea5ffca42865cb762a31639dabd7f2cca44e226	spoolsv.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{AE8E334C-8B9A-11D5-EBA1-F78EEEEEE983}\u2 = a54a6b702f92fdf2acd57599e2ae1608015dff41aa020117fc9bd8e2dcf4340f3fa61eb55d6f28597df90602703809d4	spoolsv.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{AE8E334C-8B9A-11D5-EBA1-F78EEEEEE983}\v = "165"	spoolsv.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{AE8E334C-8B9A-11D5-EBA1-F78EEEEEE983}	7b9d16e07d6d96e64e674b0a46c94580N.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{AE8E334C-8B9A-11D5-EBA1-F78EEEEEE983}\InprocServer32	7b9d16e07d6d96e64e674b0a46c94580N.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{AE8E334C-8B9A-11D5-EBA1-F78EEEEEE983}\sm = 01b8ec350471bd332433eee476ebe1f3	7b9d16e07d6d96e64e674b0a46c94580N.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{AE8E334C-8B9A-11D5-EBA1-F78EEEEEE983}\ax = 50d981392ebe05578fd659b1c414851f	7b9d16e07d6d96e64e674b0a46c94580N.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{AE8E334C-8B9A-11D5-EBA1-F78EEEEEE983}	spoolsv.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1888	7b9d16e07d6d96e64e674b0a46c94580N.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1888 wrote to memory of 1620	1888	7b9d16e07d6d96e64e674b0a46c94580N.exe	31
PID 1888 wrote to memory of 1620	1888	7b9d16e07d6d96e64e674b0a46c94580N.exe	31
PID 1888 wrote to memory of 1620	1888	7b9d16e07d6d96e64e674b0a46c94580N.exe	31
PID 1888 wrote to memory of 1620	1888	7b9d16e07d6d96e64e674b0a46c94580N.exe	31

C:\Users\Admin\AppData\Local\Temp\7b9d16e07d6d96e64e674b0a46c94580N.exe
"C:\Users\Admin\AppData\Local\Temp\7b9d16e07d6d96e64e674b0a46c94580N.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:1888
- 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:1620

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
658KB

MD5
b2eebf773c0473579ec141e78f5681cf

SHA1
fb6664e9fc3c9c76c7c67c39673ae6b1d2643d27

SHA256
157d94b2f3d0934d80c181596f5f890087a420bb0095bfee542277055764e36f

SHA512
616e1ddf5ab0c47d126b1f392fe20e0fa875ae7a6a59670ae456ef1db12df46d15632f6fea0ce887cc6ca7ffb8c2c185ff06ddaa0ad6e1cd4237a8357f863bce

Download Submit
C:\Windows\spoolsv.exe

Filesize
660KB

MD5
effe14e6424e7839a121eefb0e522030

SHA1
b8880ba51bddba5740583968a3865c81007b6146

SHA256
7e167eaccaff8b5979257461792511d40897c5a814d865eaa8caf2d5d32565db

SHA512
bad6e0a5970c49edfad11fa65e18f38bac23af2377553db5ffcc556a8beaa20bb6f7fa1d3615d4b2eaa2f5e68740b49427158f87637138b90c066fd28ca51cb2

Download Submit
memory/1620-15-0x0000000000400000-0x0000000000439000-memory.dmp

Filesize
228KB

Download
memory/1620-16-0x0000000000400000-0x0000000000439000-memory.dmp

Filesize
228KB

Download
memory/1888-14-0x0000000000400000-0x0000000000439000-memory.dmp

Filesize
228KB

Download
memory/1888-0-0x0000000000400000-0x0000000000439000-memory.dmp

Filesize
228KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

We care about your privacy.