5cf6a4ba6364654169540fc204e7f68d53aa74b61c73577213de556815f045c4

General

Target

48cefb137b69e2e659e2226a7bd5d9c0N.exe
Size

644KB
MD5

48cefb137b69e2e659e2226a7bd5d9c0
SHA1

a8b27f07c7b4a333fcaf75f937286cc764955509
SHA256

5cf6a4ba6364654169540fc204e7f68d53aa74b61c73577213de556815f045c4
SHA512

59f8c39a1b170aa7cde59d8f73c20f68022d35a0604c2d25279a9ab2eb500776c79de52ec85b9e3a7e44534e845cb9413668a6e00413808765062e4f1f1eb1b8
SSDEEP

12288:7tKe6Zv23YLVFhBsC8iFHSs7xPY1f6HriPwU8mNCZQUEsUB:v6Zv2ivhBVnFys7xP86LkRCkB

Score

8^/10

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\{1C158062-8B9A-11D5-EBA1-F78EEEEEE983}	48cefb137b69e2e659e2226a7bd5d9c0N.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{1C158062-8B9A-11D5-EBA1-F78EEEEEE983}\StubPath = "msfxs32.exe"	48cefb137b69e2e659e2226a7bd5d9c0N.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\" %*"	48cefb137b69e2e659e2226a7bd5d9c0N.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1696-0-0x0000000000400000-0x0000000000439000-memory.dmp	upx
behavioral2/files/0x00070000000234b8-5.dat	upx
behavioral2/memory/1696-7-0x0000000000400000-0x0000000000439000-memory.dmp	upx

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"	48cefb137b69e2e659e2226a7bd5d9c0N.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2990742725-2267136959-192470804-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\VCL = "vcl32.exe"	48cefb137b69e2e659e2226a7bd5d9c0N.exe

Drops file in System32 directory 6 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\concp32.exe	48cefb137b69e2e659e2226a7bd5d9c0N.exe
File created	C:\Windows\SysWOW64\vcl32.exe	48cefb137b69e2e659e2226a7bd5d9c0N.exe
File opened for modification	C:\Windows\SysWOW64\vcl32.exe	48cefb137b69e2e659e2226a7bd5d9c0N.exe
File created	C:\Windows\SysWOW64\msfxs32.exe	48cefb137b69e2e659e2226a7bd5d9c0N.exe
File opened for modification	C:\Windows\SysWOW64\msfxs32.exe	48cefb137b69e2e659e2226a7bd5d9c0N.exe
File created	C:\Windows\SysWOW64\concp32.exe	48cefb137b69e2e659e2226a7bd5d9c0N.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2220	1696	WerFault.exe	83

Modifies registry class 5 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1C158062-8B9A-11D5-EBA1-F78EEEEEE983}	48cefb137b69e2e659e2226a7bd5d9c0N.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1C158062-8B9A-11D5-EBA1-F78EEEEEE983}\InprocServer32	48cefb137b69e2e659e2226a7bd5d9c0N.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1C158062-8B9A-11D5-EBA1-F78EEEEEE983}\sm = ebb5525fa3bcf9422c8ff945977d6af9	48cefb137b69e2e659e2226a7bd5d9c0N.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1C158062-8B9A-11D5-EBA1-F78EEEEEE983}\ax = 359bda33050632368e7bee88fcef16d7	48cefb137b69e2e659e2226a7bd5d9c0N.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\SysWow64\\concp32.exe \"%1\" %*"	48cefb137b69e2e659e2226a7bd5d9c0N.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1696	48cefb137b69e2e659e2226a7bd5d9c0N.exe

C:\Users\Admin\AppData\Local\Temp\48cefb137b69e2e659e2226a7bd5d9c0N.exe
"C:\Users\Admin\AppData\Local\Temp\48cefb137b69e2e659e2226a7bd5d9c0N.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
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
PID:1696
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1696 -s 760
  2⤵
  - Program crash
  PID:2220

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1696 -ip 1696
1⤵
PID:2808

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\SysWOW64\concp32.exe

Filesize
650KB

MD5
f3922320f98f1fbe39f9cf0da7f29d8e

SHA1
c20d39321863b1bce4a52b9579e84806840dd0d2

SHA256
c4827322c1c91de5601479f0b7f45961f32e700cd470e4b5f99a9d7fd5eae76a

SHA512
1e3e25d5e3bf8b4b700fff252d79891ffc51185b3c7dc5f856139266494d096c62d812b5af2b57bcf422059fa30407c8f6dd950a432528fda4c13babba833a68

Download Submit
memory/1696-0-0x0000000000400000-0x0000000000439000-memory.dmp

Filesize
228KB

Download
memory/1696-7-0x0000000000400000-0x0000000000439000-memory.dmp

Filesize
228KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads