ea32e09b65db747fe54d8d07dee16a03c04f5500519dea4e055f11218e99f3c3

General

Target

cf2836c839d6a28a202eb5fd0adce500N.exe
Size

788KB
MD5

cf2836c839d6a28a202eb5fd0adce500
SHA1

d0d5135e91eeafc87c08551aa469c68b1018c0e0
SHA256

ea32e09b65db747fe54d8d07dee16a03c04f5500519dea4e055f11218e99f3c3
SHA512

b7c5401e99e1c68bcd2538b66909c710bcc477f364681f9a82877b7e08e625a7aea08739a2a9ba87ad21c56b5391c88bbd188b01ccb73b1659e7d285fb4c71fb
SSDEEP

12288:7tKe6Zv23YLVFhBsC8iFHs+hsuQXIQVRpVnl3Bg5oiNvSNp0f2QkutzV:v6Zv2ivhBVnFvh5Q44+iiEb0f2Q5tzV

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\{39F9467-8B9A-11D5-EBA1-F78EEEEEE983}	cf2836c839d6a28a202eb5fd0adce500N.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{39F9467-8B9A-11D5-EBA1-F78EEEEEE983}\StubPath = "mskws32.exe"	cf2836c839d6a28a202eb5fd0adce500N.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\" %*"	cf2836c839d6a28a202eb5fd0adce500N.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1824-0-0x0000000000400000-0x0000000000439000-memory.dmp	upx
behavioral2/files/0x00070000000234f7-6.dat	upx
behavioral2/memory/1824-7-0x0000000000400000-0x0000000000439000-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"	cf2836c839d6a28a202eb5fd0adce500N.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4182098368-2521458979-3782681353-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\VCL = "vcl32.exe"	cf2836c839d6a28a202eb5fd0adce500N.exe

Drops file in System32 directory 6 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\concp32.exe	cf2836c839d6a28a202eb5fd0adce500N.exe
File opened for modification	C:\Windows\SysWOW64\concp32.exe	cf2836c839d6a28a202eb5fd0adce500N.exe
File created	C:\Windows\SysWOW64\vcl32.exe	cf2836c839d6a28a202eb5fd0adce500N.exe
File opened for modification	C:\Windows\SysWOW64\vcl32.exe	cf2836c839d6a28a202eb5fd0adce500N.exe
File created	C:\Windows\SysWOW64\mskws32.exe	cf2836c839d6a28a202eb5fd0adce500N.exe
File opened for modification	C:\Windows\SysWOW64\mskws32.exe	cf2836c839d6a28a202eb5fd0adce500N.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1104	1824	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	cf2836c839d6a28a202eb5fd0adce500N.exe

Modifies registry class 5 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{39F9467-8B9A-11D5-EBA1-F78EEEEEE983}	cf2836c839d6a28a202eb5fd0adce500N.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{39F9467-8B9A-11D5-EBA1-F78EEEEEE983}\InprocServer32	cf2836c839d6a28a202eb5fd0adce500N.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{39F9467-8B9A-11D5-EBA1-F78EEEEEE983}\sm = 01b8ec350471bd332433eee476ebe1f3	cf2836c839d6a28a202eb5fd0adce500N.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{39F9467-8B9A-11D5-EBA1-F78EEEEEE983}\ax = 7d1b5f32046cfa23d1485338817e0792	cf2836c839d6a28a202eb5fd0adce500N.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\SysWow64\\concp32.exe \"%1\" %*"	cf2836c839d6a28a202eb5fd0adce500N.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1824	cf2836c839d6a28a202eb5fd0adce500N.exe

C:\Users\Admin\AppData\Local\Temp\cf2836c839d6a28a202eb5fd0adce500N.exe
"C:\Users\Admin\AppData\Local\Temp\cf2836c839d6a28a202eb5fd0adce500N.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:1824
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1824 -s 744
  2⤵
  - Program crash
  PID:1104

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 1824 -ip 1824
1⤵
PID:4552

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
789KB

MD5
e610e57f23d6f480179e18dfd61ffb62

SHA1
353f445d97e99ff080421533c6fce1deba36ad2a

SHA256
a0980abc3635434e637ea89f02acb1169e1c8569aaa2622eed2b240dcdfcb5d1

SHA512
95bc292bf96cb8e39818ee59761c09a2011fe13912af979c396a8135ed9890ac6b792c2eb6d1707d0d780b31f757e0164586833509073655e337c90abaf334ed

Download Submit
memory/1824-0-0x0000000000400000-0x0000000000439000-memory.dmp

Filesize
228KB

Download
memory/1824-7-0x0000000000400000-0x0000000000439000-memory.dmp

Filesize
228KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads