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 2 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\{2DD82902-8B9A-11D5-EBA1-F78EEEEEE983}	4b04f5b4b13d7b47193e0d2ce1373d78ead5a0798937af062463beb7441fc27eN.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{2DD82902-8B9A-11D5-EBA1-F78EEEEEE983}\StubPath = "msutq32.exe"	4b04f5b4b13d7b47193e0d2ce1373d78ead5a0798937af062463beb7441fc27eN.exe

Modifies system executable filetype association 2 TTPs 1 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

Adds Run key to start application 2 TTPs 2 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-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\VCL = "vcl32.exe"	4b04f5b4b13d7b47193e0d2ce1373d78ead5a0798937af062463beb7441fc27eN.exe

Drops file in System32 directory 6 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\vcl32.exe	4b04f5b4b13d7b47193e0d2ce1373d78ead5a0798937af062463beb7441fc27eN.exe
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

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4220-0-0x0000000000400000-0x0000000000439000-memory.dmp	upx
behavioral2/files/0x0007000000023c9e-5.dat	upx
behavioral2/memory/4220-7-0x0000000000400000-0x0000000000439000-memory.dmp	upx

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1328	4220	WerFault.exe	82

System Location Discovery: System Language Discovery 1 TTPs 1 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

Modifies registry class 5 IoCs

description	ioc	Process
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{2DD82902-8B9A-11D5-EBA1-F78EEEEEE983}\sm = 01b8ec350471bd332433eee476ebe1f3	4b04f5b4b13d7b47193e0d2ce1373d78ead5a0798937af062463beb7441fc27eN.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{2DD82902-8B9A-11D5-EBA1-F78EEEEEE983}\ax = 0f40aed6df6adade7b92f7a616d49bd5	4b04f5b4b13d7b47193e0d2ce1373d78ead5a0798937af062463beb7441fc27eN.exe
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\{2DD82902-8B9A-11D5-EBA1-F78EEEEEE983}	4b04f5b4b13d7b47193e0d2ce1373d78ead5a0798937af062463beb7441fc27eN.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{2DD82902-8B9A-11D5-EBA1-F78EEEEEE983}\InprocServer32	4b04f5b4b13d7b47193e0d2ce1373d78ead5a0798937af062463beb7441fc27eN.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
4220	4b04f5b4b13d7b47193e0d2ce1373d78ead5a0798937af062463beb7441fc27eN.exe

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
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
PID:4220
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4220 -s 624
  2⤵
  - Program crash
  PID:1328

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 4220 -ip 4220
1⤵
PID:3644

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
memory/4220-0-0x0000000000400000-0x0000000000439000-memory.dmp

Filesize
228KB

Download
memory/4220-7-0x0000000000400000-0x0000000000439000-memory.dmp

Filesize
228KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads