4385a26c638a01f58cf874c20cdc234d8579ca0b1a4bd8e31c048064b7ab1b1a

General

Target

afc0bdda3856961163438e90ac87d670N.exe
Size

644KB
MD5

afc0bdda3856961163438e90ac87d670
SHA1

6f69edd87c78ea3c38b3fa43c3728db8c9d12976
SHA256

4385a26c638a01f58cf874c20cdc234d8579ca0b1a4bd8e31c048064b7ab1b1a
SHA512

a6b2b7071af06336a190523b533b8c839aa2b829e554f2bd8d178b971bc574be2f7761048957884243ca8f9bada24bbc3538d7fa5ea6728757abb469078c2279
SSDEEP

12288:7tKe6Zv23YLVFhBsC8iFHSs7xPY1f6HriPwU8mNCZQUEdsaj1k2CC9E:v6Zv2ivhBVnFys7xP86LkRCQsau2E

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\{C36B5D2E-8B9A-11D5-EBA1-F78EEEEEE983}	afc0bdda3856961163438e90ac87d670N.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{C36B5D2E-8B9A-11D5-EBA1-F78EEEEEE983}\StubPath = "msoka32.exe"	afc0bdda3856961163438e90ac87d670N.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\" %*"	afc0bdda3856961163438e90ac87d670N.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4304-0-0x0000000000400000-0x0000000000439000-memory.dmp	upx
behavioral2/files/0x0007000000023493-5.dat	upx
behavioral2/memory/4304-7-0x0000000000400000-0x0000000000439000-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"	afc0bdda3856961163438e90ac87d670N.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-47134698-4092160662-1261813102-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\VCL = "vcl32.exe"	afc0bdda3856961163438e90ac87d670N.exe

Drops file in System32 directory 6 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\vcl32.exe	afc0bdda3856961163438e90ac87d670N.exe
File created	C:\Windows\SysWOW64\msoka32.exe	afc0bdda3856961163438e90ac87d670N.exe
File opened for modification	C:\Windows\SysWOW64\msoka32.exe	afc0bdda3856961163438e90ac87d670N.exe
File created	C:\Windows\SysWOW64\concp32.exe	afc0bdda3856961163438e90ac87d670N.exe
File opened for modification	C:\Windows\SysWOW64\concp32.exe	afc0bdda3856961163438e90ac87d670N.exe
File created	C:\Windows\SysWOW64\vcl32.exe	afc0bdda3856961163438e90ac87d670N.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3388	4304	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	afc0bdda3856961163438e90ac87d670N.exe

Modifies registry class 5 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{C36B5D2E-8B9A-11D5-EBA1-F78EEEEEE983}	afc0bdda3856961163438e90ac87d670N.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{C36B5D2E-8B9A-11D5-EBA1-F78EEEEEE983}\InprocServer32	afc0bdda3856961163438e90ac87d670N.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{C36B5D2E-8B9A-11D5-EBA1-F78EEEEEE983}\sm = 01b8ec350471bd332433eee476ebe1f3	afc0bdda3856961163438e90ac87d670N.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{C36B5D2E-8B9A-11D5-EBA1-F78EEEEEE983}\ax = 4eac985de42205b0714daecf76d51577	afc0bdda3856961163438e90ac87d670N.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\SysWow64\\concp32.exe \"%1\" %*"	afc0bdda3856961163438e90ac87d670N.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
4304	afc0bdda3856961163438e90ac87d670N.exe

C:\Users\Admin\AppData\Local\Temp\afc0bdda3856961163438e90ac87d670N.exe
"C:\Users\Admin\AppData\Local\Temp\afc0bdda3856961163438e90ac87d670N.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:4304
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4304 -s 744
  2⤵
  - Program crash
  PID:3388

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 4304 -ip 4304
1⤵
PID:732

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
647KB

MD5
5146d09dd5448b277845fbf2b429c1f3

SHA1
a176868dc6cd2c9c655d94f8640ec942f8950817

SHA256
abb136f631dec9151b00ec7400fd0e5fd9d59667356481f4c45fddc457ba0458

SHA512
7c387d63353b8168591cacd76fdc912360712165c37c66b064d1b0207ef58a492d0046d6ac4447d08bd44fb8d372575ab8ca4aa85049f33d0fe8cc6d996170df

Download Submit
memory/4304-0-0x0000000000400000-0x0000000000439000-memory.dmp

Filesize
228KB

Download
memory/4304-7-0x0000000000400000-0x0000000000439000-memory.dmp

Filesize
228KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads