4b04f5b4b13d7b47193e0d2ce1373d78ead5a0798937af062463beb7441fc27e

General

Target

4b04f5b4b13d7b47193e0d2ce1373d78ead5a0798937af062463beb7441fc27eN.exe
Size

1.1MB
MD5

248612f5a68ca920f0e0acacb60cac60
SHA1

992d22545542ed422e48b6abf48f4622f19d43ec
SHA256

4b04f5b4b13d7b47193e0d2ce1373d78ead5a0798937af062463beb7441fc27e
SHA512

504e785f291a603dd753cbbee6e008889b86ab7ca26d1e96bbbe52c642109a4051191fee7b0aca5d69210064cc6fe17316b3c911506ec5f3347cfc24b62ffa5c
SSDEEP

24576:v6Zv2ivhBVnFys7xP86Lh7uhmh8VZ7i/+XAmvYSFdbRPIbgRrVCWpYzQ:vE2ivhQs7dLNuhmuVZ7iHmv5FJRIqXCE

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\{212C0C8A-8B9A-11D5-EBA1-F78EEEEEE983}	spoolsv.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{212C0C8A-8B9A-11D5-EBA1-F78EEEEEE983}\StubPath = "msutq32.exe"	spoolsv.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{212C0C8A-8B9A-11D5-EBA1-F78EEEEEE983}	4b04f5b4b13d7b47193e0d2ce1373d78ead5a0798937af062463beb7441fc27eN.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{212C0C8A-8B9A-11D5-EBA1-F78EEEEEE983}\StubPath = "msutq32.exe"	4b04f5b4b13d7b47193e0d2ce1373d78ead5a0798937af062463beb7441fc27eN.exe

Executes dropped EXE 1 IoCs

pid	Process
1128	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\" %*"	4b04f5b4b13d7b47193e0d2ce1373d78ead5a0798937af062463beb7441fc27eN.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"	4b04f5b4b13d7b47193e0d2ce1373d78ead5a0798937af062463beb7441fc27eN.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3290804112-2823094203-3137964600-1000\Software\Microsoft\Windows\CurrentVersion\Run\VCL = "vcl32.exe"	4b04f5b4b13d7b47193e0d2ce1373d78ead5a0798937af062463beb7441fc27eN.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 opened for modification	C:\Windows\SysWOW64\vcl32.exe	4b04f5b4b13d7b47193e0d2ce1373d78ead5a0798937af062463beb7441fc27eN.exe
File created	C:\Windows\SysWOW64\msutq32.exe	4b04f5b4b13d7b47193e0d2ce1373d78ead5a0798937af062463beb7441fc27eN.exe
File opened for modification	C:\Windows\SysWOW64\msutq32.exe	4b04f5b4b13d7b47193e0d2ce1373d78ead5a0798937af062463beb7441fc27eN.exe
File created	C:\Windows\SysWOW64\concp32.exe	4b04f5b4b13d7b47193e0d2ce1373d78ead5a0798937af062463beb7441fc27eN.exe
File opened for modification	C:\Windows\SysWOW64\concp32.exe	4b04f5b4b13d7b47193e0d2ce1373d78ead5a0798937af062463beb7441fc27eN.exe
File created	C:\Windows\SysWOW64\vcl32.exe	4b04f5b4b13d7b47193e0d2ce1373d78ead5a0798937af062463beb7441fc27eN.exe

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2248-0-0x0000000000400000-0x0000000000439000-memory.dmp	upx
behavioral1/files/0x0007000000016d0b-5.dat	upx
behavioral1/memory/2248-10-0x0000000000220000-0x0000000000259000-memory.dmp	upx
behavioral1/files/0x0008000000016c4e-15.dat	upx
behavioral1/memory/2248-16-0x0000000000400000-0x0000000000439000-memory.dmp	upx
behavioral1/memory/1128-17-0x0000000000400000-0x0000000000439000-memory.dmp	upx

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\spoolsv.exe	4b04f5b4b13d7b47193e0d2ce1373d78ead5a0798937af062463beb7441fc27eN.exe
File opened for modification	C:\Windows\spoolsv.exe	4b04f5b4b13d7b47193e0d2ce1373d78ead5a0798937af062463beb7441fc27eN.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	4b04f5b4b13d7b47193e0d2ce1373d78ead5a0798937af062463beb7441fc27eN.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\" %*"	4b04f5b4b13d7b47193e0d2ce1373d78ead5a0798937af062463beb7441fc27eN.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{212C0C8A-8B9A-11D5-EBA1-F78EEEEEE983}	spoolsv.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{212C0C8A-8B9A-11D5-EBA1-F78EEEEEE983}\u1 = 551d2e0658054ba756fd3798fea5ffca42865cb762a31639dabd7f2cca44e226	spoolsv.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{212C0C8A-8B9A-11D5-EBA1-F78EEEEEE983}\u2 = a54a6b702f92fdf2acd57599e2ae1608015dff41aa020117fc9bd8e2dcf4340f3fa61eb55d6f28597df90602703809d4	spoolsv.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{212C0C8A-8B9A-11D5-EBA1-F78EEEEEE983}\v = "165"	spoolsv.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{212C0C8A-8B9A-11D5-EBA1-F78EEEEEE983}\InprocServer32	4b04f5b4b13d7b47193e0d2ce1373d78ead5a0798937af062463beb7441fc27eN.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{212C0C8A-8B9A-11D5-EBA1-F78EEEEEE983}\sm = 01b8ec350471bd332433eee476ebe1f3	4b04f5b4b13d7b47193e0d2ce1373d78ead5a0798937af062463beb7441fc27eN.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{212C0C8A-8B9A-11D5-EBA1-F78EEEEEE983}\InprocServer32	spoolsv.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{212C0C8A-8B9A-11D5-EBA1-F78EEEEEE983}\u0 = 658663d26f8bad325217a06063847056939f558d910ed252e05dd0113550f7fc0f4da82ff73a0681ba604c2d4f23269f	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\{212C0C8A-8B9A-11D5-EBA1-F78EEEEEE983}	4b04f5b4b13d7b47193e0d2ce1373d78ead5a0798937af062463beb7441fc27eN.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{212C0C8A-8B9A-11D5-EBA1-F78EEEEEE983}\ax = 0f40aed6df6adade7b92f7a616d49bd5	4b04f5b4b13d7b47193e0d2ce1373d78ead5a0798937af062463beb7441fc27eN.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2248	4b04f5b4b13d7b47193e0d2ce1373d78ead5a0798937af062463beb7441fc27eN.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2248 wrote to memory of 1128	2248	4b04f5b4b13d7b47193e0d2ce1373d78ead5a0798937af062463beb7441fc27eN.exe	30
PID 2248 wrote to memory of 1128	2248	4b04f5b4b13d7b47193e0d2ce1373d78ead5a0798937af062463beb7441fc27eN.exe	30
PID 2248 wrote to memory of 1128	2248	4b04f5b4b13d7b47193e0d2ce1373d78ead5a0798937af062463beb7441fc27eN.exe	30
PID 2248 wrote to memory of 1128	2248	4b04f5b4b13d7b47193e0d2ce1373d78ead5a0798937af062463beb7441fc27eN.exe	30

C:\Users\Admin\AppData\Local\Temp\4b04f5b4b13d7b47193e0d2ce1373d78ead5a0798937af062463beb7441fc27eN.exe
"C:\Users\Admin\AppData\Local\Temp\4b04f5b4b13d7b47193e0d2ce1373d78ead5a0798937af062463beb7441fc27eN.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:2248
- 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:1128

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
1.1MB

MD5
f5c006d9329539f17f67f46e4ee5945c

SHA1
adcabf8caea7de7a86278357b2af793d59b8c7a6

SHA256
f61027991ba13632f9151de81ade5099f987065feeba34df924daa98806a2b69

SHA512
526dc34eadd12db9578fade9dc74f61719da0e20c81635022f1e30ffd899108e3d83c024db9de7a89bfea28e44cd628679d3894d11951f21bd8c6e30f58baa89

Download Submit
C:\Windows\spoolsv.exe

Filesize
1.1MB

MD5
c09a53acfb69a49c79a85a4228d3c76a

SHA1
07b353513ab5e29486d07f271e37820a665c6f3e

SHA256
f5580be2b23263e088302ef5d161da86a2eee2dfb9d7c9dfa8dcc27b0e250d91

SHA512
f3c3285222f53f6268896971e3845121a5c30c80ab32c6103f47631b5dd22a4d2f3277455e772879266c2ee7d2a5a354426a7696a5e577d781771d48ae1b9092

Download Submit
memory/1128-17-0x0000000000400000-0x0000000000439000-memory.dmp

Filesize
228KB

Download
memory/2248-0-0x0000000000400000-0x0000000000439000-memory.dmp

Filesize
228KB

Download
memory/2248-10-0x0000000000220000-0x0000000000259000-memory.dmp

Filesize
228KB

Download
memory/2248-14-0x0000000000220000-0x0000000000259000-memory.dmp

Filesize
228KB

Download
memory/2248-16-0x0000000000400000-0x0000000000439000-memory.dmp

Filesize
228KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads