270f8e7c30ebdbf8c1e642e4c7dd5eb0950efa2dca1dfa8290103f352f8df8b5

General

Target

2d64b37beb5063a030c2e083b4d6baa0N.exe
Size

892KB
MD5

2d64b37beb5063a030c2e083b4d6baa0
SHA1

bf0583bcecb115f20c5c6f800b46321734b8a781
SHA256

270f8e7c30ebdbf8c1e642e4c7dd5eb0950efa2dca1dfa8290103f352f8df8b5
SHA512

77a24cb1d905049ff129084a9ef7d9bd48fcace78c5dcca1b4e7e84cdc4ce707cf584c136273717b66480ebc513ed857c0a06bb7918697cc18aa0917c7558fd0
SSDEEP

24576:v6Zv2ivhBVnFys7xP86LkRCwPYfuukvDtiflQM:vE2ivhQs7dLkRumsR

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\{44796B40-8B9A-11D5-EBA1-F78EEEEEE983}	2d64b37beb5063a030c2e083b4d6baa0N.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{44796B40-8B9A-11D5-EBA1-F78EEEEEE983}\StubPath = "msuck32.exe"	2d64b37beb5063a030c2e083b4d6baa0N.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\" %*"	2d64b37beb5063a030c2e083b4d6baa0N.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral2/memory/976-0-0x0000000000400000-0x0000000000439000-memory.dmp	upx
behavioral2/files/0x0007000000023433-5.dat	upx
behavioral2/memory/976-7-0x0000000000400000-0x0000000000439000-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"	2d64b37beb5063a030c2e083b4d6baa0N.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2392887640-1187051047-2909758433-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\VCL = "vcl32.exe"	2d64b37beb5063a030c2e083b4d6baa0N.exe

Drops file in System32 directory 6 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\msuck32.exe	2d64b37beb5063a030c2e083b4d6baa0N.exe
File created	C:\Windows\SysWOW64\concp32.exe	2d64b37beb5063a030c2e083b4d6baa0N.exe
File opened for modification	C:\Windows\SysWOW64\concp32.exe	2d64b37beb5063a030c2e083b4d6baa0N.exe
File created	C:\Windows\SysWOW64\vcl32.exe	2d64b37beb5063a030c2e083b4d6baa0N.exe
File opened for modification	C:\Windows\SysWOW64\vcl32.exe	2d64b37beb5063a030c2e083b4d6baa0N.exe
File created	C:\Windows\SysWOW64\msuck32.exe	2d64b37beb5063a030c2e083b4d6baa0N.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4216	976	WerFault.exe	83

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	2d64b37beb5063a030c2e083b4d6baa0N.exe

Modifies registry class 5 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{44796B40-8B9A-11D5-EBA1-F78EEEEEE983}	2d64b37beb5063a030c2e083b4d6baa0N.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{44796B40-8B9A-11D5-EBA1-F78EEEEEE983}\InprocServer32	2d64b37beb5063a030c2e083b4d6baa0N.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{44796B40-8B9A-11D5-EBA1-F78EEEEEE983}\sm = ebb5525fa3bcf9422c8ff945977d6af9	2d64b37beb5063a030c2e083b4d6baa0N.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{44796B40-8B9A-11D5-EBA1-F78EEEEEE983}\ax = 0470994c8aec1aac62030c92371faaf4	2d64b37beb5063a030c2e083b4d6baa0N.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\SysWow64\\concp32.exe \"%1\" %*"	2d64b37beb5063a030c2e083b4d6baa0N.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
976	2d64b37beb5063a030c2e083b4d6baa0N.exe

C:\Users\Admin\AppData\Local\Temp\2d64b37beb5063a030c2e083b4d6baa0N.exe
"C:\Users\Admin\AppData\Local\Temp\2d64b37beb5063a030c2e083b4d6baa0N.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:976
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 976 -s 736
  2⤵
  - Program crash
  PID:4216

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 976 -ip 976
1⤵
PID:744

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
894KB

MD5
b38a21bf0e94e4545eaa7ed62c8885fb

SHA1
d9e63d42b9e33faa3c3686957f2c2be3ae8a0c14

SHA256
12243fb540a6812363de601a4fd5f839edf7b7f9cb1f1742aac02ba4a1fca4f6

SHA512
fea2b74a06a30e9e8ff963dc337eec616f3442d48886d535270d85756c30700ce9af94bbbedf2dd810fcb7ced07daee6075087685ae4e6ed64619b579652f157

Download Submit
memory/976-0-0x0000000000400000-0x0000000000439000-memory.dmp

Filesize
228KB

Download
memory/976-7-0x0000000000400000-0x0000000000439000-memory.dmp

Filesize
228KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads