cce6964c5568596aa578ff189c94741ba7e1156ed5bace07eec63824834db053

General

Target

787fe8fdbf111a661f01c91d56a61500N.exe
Size

1.0MB
MD5

787fe8fdbf111a661f01c91d56a61500
SHA1

2bc5529851c2c79fc064b4e3196508e27085a846
SHA256

cce6964c5568596aa578ff189c94741ba7e1156ed5bace07eec63824834db053
SHA512

02392bff5d3a9770d48574321f6262b43a1d48e0fc554f1e0fdbeffded2716570d0d8b39379e7de4bed1f438b4b1df5a4e7faf9c92b97d7db11b30ab73de1399
SSDEEP

24576:v6Zv2ivhBVnFys7xP86Lh7uhmh8VZ7i/+XAmvYSFdbRPIbgRrhQKNz5:vE2ivhQs7dLNuhmuVZ7iHmv5FJRIq6GV

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\{F4F8F2EC-8B9A-11D5-EBA1-F78EEEEEE983}	787fe8fdbf111a661f01c91d56a61500N.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{F4F8F2EC-8B9A-11D5-EBA1-F78EEEEEE983}\StubPath = "msaso32.exe"	787fe8fdbf111a661f01c91d56a61500N.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\" %*"	787fe8fdbf111a661f01c91d56a61500N.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral2/memory/936-0-0x0000000000400000-0x0000000000439000-memory.dmp	upx
behavioral2/files/0x000700000002340f-5.dat	upx
behavioral2/memory/936-7-0x0000000000400000-0x0000000000439000-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"	787fe8fdbf111a661f01c91d56a61500N.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2718105630-359604950-2820636825-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\VCL = "vcl32.exe"	787fe8fdbf111a661f01c91d56a61500N.exe

Drops file in System32 directory 6 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\msaso32.exe	787fe8fdbf111a661f01c91d56a61500N.exe
File opened for modification	C:\Windows\SysWOW64\msaso32.exe	787fe8fdbf111a661f01c91d56a61500N.exe
File created	C:\Windows\SysWOW64\concp32.exe	787fe8fdbf111a661f01c91d56a61500N.exe
File opened for modification	C:\Windows\SysWOW64\concp32.exe	787fe8fdbf111a661f01c91d56a61500N.exe
File created	C:\Windows\SysWOW64\vcl32.exe	787fe8fdbf111a661f01c91d56a61500N.exe
File opened for modification	C:\Windows\SysWOW64\vcl32.exe	787fe8fdbf111a661f01c91d56a61500N.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2448	936	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	787fe8fdbf111a661f01c91d56a61500N.exe

Modifies registry class 5 IoCs

description	ioc	Process
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{F4F8F2EC-8B9A-11D5-EBA1-F78EEEEEE983}\sm = 01b8ec350471bd332433eee476ebe1f3	787fe8fdbf111a661f01c91d56a61500N.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{F4F8F2EC-8B9A-11D5-EBA1-F78EEEEEE983}\ax = 56415a414245ab20486296a4f04b0852	787fe8fdbf111a661f01c91d56a61500N.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\SysWow64\\concp32.exe \"%1\" %*"	787fe8fdbf111a661f01c91d56a61500N.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{F4F8F2EC-8B9A-11D5-EBA1-F78EEEEEE983}	787fe8fdbf111a661f01c91d56a61500N.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{F4F8F2EC-8B9A-11D5-EBA1-F78EEEEEE983}\InprocServer32	787fe8fdbf111a661f01c91d56a61500N.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
936	787fe8fdbf111a661f01c91d56a61500N.exe

C:\Users\Admin\AppData\Local\Temp\787fe8fdbf111a661f01c91d56a61500N.exe
"C:\Users\Admin\AppData\Local\Temp\787fe8fdbf111a661f01c91d56a61500N.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:936
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 936 -s 624
  2⤵
  - Program crash
  PID:2448

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 936 -ip 936
1⤵
PID:1160

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
1.0MB

MD5
e6ed9779fcf71fc416dbc9e8fc0435e4

SHA1
79ac681f3d54af9a1cc76bcc940fd499d6c714ba

SHA256
8ca2bb494592a0d3e8d5e696f918d7cf9cb9f10e8f50090e78b448fa88a85ac1

SHA512
a9a428c38cda49ef9eadf09fa49c1ce26abef508f2cb580c7370882c95133acc9979801d0ed967b5898c6983b5f52d2e37a36bd751d510fb04f0012eb498a7d7

Download Submit
memory/936-0-0x0000000000400000-0x0000000000439000-memory.dmp

Filesize
228KB

Download
memory/936-7-0x0000000000400000-0x0000000000439000-memory.dmp

Filesize
228KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads