1dfd338197e6ec4acde13e8b693f8bdf34c510777975933d7cff783e25699bf7

General

Target
1dfd338197e6ec4acde13e8b693f8bdf34c510777975933d7cff783e25699bf7.exe
Size 589KB
Sample260910-kldf7attgx
SHA256 1dfd338197e6ec4acde13e8b693f8bdf34c510777975933d7cff783e25699bf7
MD5 ea22f77d424999ff547612f05928ffb0
SHA1 43da84e5272835c55435e603c52501004fe2d760
SHA512 7e3c444aecaff0cd8e7b48bfbf598bc7577722ed7c32d9b421c3c167a78336491ceffc31ea06ff1cdd5b1710c712b859e30777baba96ac576eb33f7ae2bdcadc
SSDEEP 12288:BtKe6Zv23YnDGSxLykrV/38qkYlMJusL9fJla:R6Zv2KDGkrDkYbifJw
TLSH
T1AAD4127637D05CF2CA02057006E597568FB3FA3E16628933F7E49A1B5C39E80AF66742
MD5 SHA1 SHA512 SSDEEP TLSH

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\{FF60E524-8B9A-11D5-EBA1-F78EEEEEE983}	1dfd338197e6ec4acde13e8b693f8bdf34c510777975933d7cff783e25699bf7.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{FF60E524-8B9A-11D5-EBA1-F78EEEEEE983}\StubPath = "msmco32.exe"	1dfd338197e6ec4acde13e8b693f8bdf34c510777975933d7cff783e25699bf7.exe

Patched UPX-packed file 1 IoCs

Sample is packed with UPX but required header fields are zeroed out to prevent unpacking with the default UPX tool.

resource	yara_rule
behavioral1/files/0x00070000000244ae-6.dat	patched_upx

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\" %*"	1dfd338197e6ec4acde13e8b693f8bdf34c510777975933d7cff783e25699bf7.exe

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"	1dfd338197e6ec4acde13e8b693f8bdf34c510777975933d7cff783e25699bf7.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2937465464-4167303362-2236413517-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\VCL = "vcl32.exe"	1dfd338197e6ec4acde13e8b693f8bdf34c510777975933d7cff783e25699bf7.exe

Drops file in System32 directory 6 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\msmco32.exe	1dfd338197e6ec4acde13e8b693f8bdf34c510777975933d7cff783e25699bf7.exe
File created	C:\Windows\SysWOW64\concp32.exe	1dfd338197e6ec4acde13e8b693f8bdf34c510777975933d7cff783e25699bf7.exe
File opened for modification	C:\Windows\SysWOW64\concp32.exe	1dfd338197e6ec4acde13e8b693f8bdf34c510777975933d7cff783e25699bf7.exe
File created	C:\Windows\SysWOW64\vcl32.exe	1dfd338197e6ec4acde13e8b693f8bdf34c510777975933d7cff783e25699bf7.exe
File opened for modification	C:\Windows\SysWOW64\vcl32.exe	1dfd338197e6ec4acde13e8b693f8bdf34c510777975933d7cff783e25699bf7.exe
File created	C:\Windows\SysWOW64\msmco32.exe	1dfd338197e6ec4acde13e8b693f8bdf34c510777975933d7cff783e25699bf7.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1028-0-0x0000000000400000-0x0000000000449000-memory.dmp	upx
behavioral1/files/0x00070000000244ae-6.dat	upx
behavioral1/memory/1028-8-0x0000000000400000-0x0000000000449000-memory.dmp	upx

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4752	1028	WerFault.exe	86

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	1dfd338197e6ec4acde13e8b693f8bdf34c510777975933d7cff783e25699bf7.exe

Modifies registry class 5 IoCs

description	ioc	Process
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{FF60E524-8B9A-11D5-EBA1-F78EEEEEE983}\sm = ebb5525fa3bcf9422c8ff945977d6af9	1dfd338197e6ec4acde13e8b693f8bdf34c510777975933d7cff783e25699bf7.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{FF60E524-8B9A-11D5-EBA1-F78EEEEEE983}\ax = c3a7b085961e5f481b122a0df3c15b70	1dfd338197e6ec4acde13e8b693f8bdf34c510777975933d7cff783e25699bf7.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\SysWow64\\concp32.exe \"%1\" %*"	1dfd338197e6ec4acde13e8b693f8bdf34c510777975933d7cff783e25699bf7.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{FF60E524-8B9A-11D5-EBA1-F78EEEEEE983}	1dfd338197e6ec4acde13e8b693f8bdf34c510777975933d7cff783e25699bf7.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{FF60E524-8B9A-11D5-EBA1-F78EEEEEE983}\InprocServer32	1dfd338197e6ec4acde13e8b693f8bdf34c510777975933d7cff783e25699bf7.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1028	1dfd338197e6ec4acde13e8b693f8bdf34c510777975933d7cff783e25699bf7.exe

C:\Users\Admin\AppData\Local\Temp\1dfd338197e6ec4acde13e8b693f8bdf34c510777975933d7cff783e25699bf7.exe
"C:\Users\Admin\AppData\Local\Temp\1dfd338197e6ec4acde13e8b693f8bdf34c510777975933d7cff783e25699bf7.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:1028
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1028 -s 704
  2⤵
  - Program crash
  PID:4752

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 1028 -ip 1028
1⤵
PID:3092

Network

MITRE ATT&CK Enterprise v16

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

concp32.exe

Path C:\Windows\SysWOW64\concp32.exe
Size 596KB
SHA256 f8339e356f84d93b3e231abf3c17776f80cae76b9d148d14aac4e991139bf223
MD5 4c11632c419f9095c93004c25d5cff5a
SHA1 50145132dd0dbad5bd2474d1e94c57b9308b2d67
SHA512 302a2911c5601b51cd4fb8b20c3d217bd58d5563524ae14c681d6d188ec7d72c2f445343ecb6b51178b64fc71e525821972b1d24b80a5ecb13a2eae307cf1bf3
SSDEEP 12288:BtKe6Zv23YnDGSxLykrV/38qkYlMJusL9fJlrq:R6Zv2KDGkrDkYbifJVq
TLSH
T1F8D4123637D05CF1DA42067006E597568FB3FA3A16628933F7E09A1B5C39F80AF66742
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/1028-0-0x0000000000400000-0x0000000000449000-memory.dmp

Download

memory/1028-1-0x000000000042E000-0x000000000042F000-memory.dmp

Download

memory/1028-8-0x0000000000400000-0x0000000000449000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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