72b90d88372909913e0cbf91150b68d75eb0df08f098318bf07f85dc7d9e1911

General

Target

72b90d88372909913e0cbf91150b68d75eb0df08f098318bf07f85dc7d9e1911.exe
Size

82KB
MD5

81524803b7c263ad8172539741ccb851
SHA1

cf10ec43c31f63a10754888d13facc2267242fce
SHA256

72b90d88372909913e0cbf91150b68d75eb0df08f098318bf07f85dc7d9e1911
SHA512

80fc81f32693ecd0522e20023b520bdf084897075a74a2cff28ad61427e43c912f013860321dc9ee0335b35b7b72e659f6b61a11001b9d312304bda3aa9e1756
SSDEEP

1536:RshfSWHHNvoLqNwDDGw02eQmh0HjWOrn4eaTmU82MoERGzG6:GhfxHNIreQm+Hiqn4eaTmU82MoERGzG6

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
3764	rundll32.exe

Modifies system executable filetype association 2 TTPs 5 IoCs

persistence

Modify Registry

T1112

Change Default File Association

T1546.001

description	ioc	Process
Key created	\REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command	72b90d88372909913e0cbf91150b68d75eb0df08f098318bf07f85dc7d9e1911.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*"	72b90d88372909913e0cbf91150b68d75eb0df08f098318bf07f85dc7d9e1911.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	72b90d88372909913e0cbf91150b68d75eb0df08f098318bf07f85dc7d9e1911.exe
Key created	\REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	rundll32.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\¢«.exe	72b90d88372909913e0cbf91150b68d75eb0df08f098318bf07f85dc7d9e1911.exe
File created	C:\Windows\SysWOW64\¢«.exe	72b90d88372909913e0cbf91150b68d75eb0df08f098318bf07f85dc7d9e1911.exe
File opened for modification	C:\Windows\SysWOW64\notepad¢¬.exe	72b90d88372909913e0cbf91150b68d75eb0df08f098318bf07f85dc7d9e1911.exe
File created	C:\Windows\SysWOW64\notepad¢¬.exe	72b90d88372909913e0cbf91150b68d75eb0df08f098318bf07f85dc7d9e1911.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system\rundll32.exe	72b90d88372909913e0cbf91150b68d75eb0df08f098318bf07f85dc7d9e1911.exe
File created	C:\Windows\system\rundll32.exe	72b90d88372909913e0cbf91150b68d75eb0df08f098318bf07f85dc7d9e1911.exe

System Location Discovery: System Language Discovery 1 TTPs 2 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	72b90d88372909913e0cbf91150b68d75eb0df08f098318bf07f85dc7d9e1911.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe

Modifies registry class 15 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\Software\Classes\txtfile\shell\open\command	72b90d88372909913e0cbf91150b68d75eb0df08f098318bf07f85dc7d9e1911.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad.exe %1"	72b90d88372909913e0cbf91150b68d75eb0df08f098318bf07f85dc7d9e1911.exe
Key created	\REGISTRY\MACHINE\Software\Classes\txtfile\shell\open\command	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad¢¬ %1"	rundll32.exe
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	72b90d88372909913e0cbf91150b68d75eb0df08f098318bf07f85dc7d9e1911.exe
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	rundll32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainUp = "1723445576"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad¢¬ %1"	72b90d88372909913e0cbf91150b68d75eb0df08f098318bf07f85dc7d9e1911.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*"	72b90d88372909913e0cbf91150b68d75eb0df08f098318bf07f85dc7d9e1911.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	72b90d88372909913e0cbf91150b68d75eb0df08f098318bf07f85dc7d9e1911.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainVer = "506"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	rundll32.exe
Key created	\REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command	72b90d88372909913e0cbf91150b68d75eb0df08f098318bf07f85dc7d9e1911.exe
Key created	\REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command	rundll32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainSetup = "1723445576"	rundll32.exe

Suspicious behavior: EnumeratesProcesses 28 IoCs

pid	Process
2288	72b90d88372909913e0cbf91150b68d75eb0df08f098318bf07f85dc7d9e1911.exe
2288	72b90d88372909913e0cbf91150b68d75eb0df08f098318bf07f85dc7d9e1911.exe
2288	72b90d88372909913e0cbf91150b68d75eb0df08f098318bf07f85dc7d9e1911.exe
2288	72b90d88372909913e0cbf91150b68d75eb0df08f098318bf07f85dc7d9e1911.exe
2288	72b90d88372909913e0cbf91150b68d75eb0df08f098318bf07f85dc7d9e1911.exe
2288	72b90d88372909913e0cbf91150b68d75eb0df08f098318bf07f85dc7d9e1911.exe
2288	72b90d88372909913e0cbf91150b68d75eb0df08f098318bf07f85dc7d9e1911.exe
2288	72b90d88372909913e0cbf91150b68d75eb0df08f098318bf07f85dc7d9e1911.exe
2288	72b90d88372909913e0cbf91150b68d75eb0df08f098318bf07f85dc7d9e1911.exe
2288	72b90d88372909913e0cbf91150b68d75eb0df08f098318bf07f85dc7d9e1911.exe
2288	72b90d88372909913e0cbf91150b68d75eb0df08f098318bf07f85dc7d9e1911.exe
2288	72b90d88372909913e0cbf91150b68d75eb0df08f098318bf07f85dc7d9e1911.exe
2288	72b90d88372909913e0cbf91150b68d75eb0df08f098318bf07f85dc7d9e1911.exe
2288	72b90d88372909913e0cbf91150b68d75eb0df08f098318bf07f85dc7d9e1911.exe
2288	72b90d88372909913e0cbf91150b68d75eb0df08f098318bf07f85dc7d9e1911.exe
2288	72b90d88372909913e0cbf91150b68d75eb0df08f098318bf07f85dc7d9e1911.exe
2288	72b90d88372909913e0cbf91150b68d75eb0df08f098318bf07f85dc7d9e1911.exe
2288	72b90d88372909913e0cbf91150b68d75eb0df08f098318bf07f85dc7d9e1911.exe
2288	72b90d88372909913e0cbf91150b68d75eb0df08f098318bf07f85dc7d9e1911.exe
2288	72b90d88372909913e0cbf91150b68d75eb0df08f098318bf07f85dc7d9e1911.exe
2288	72b90d88372909913e0cbf91150b68d75eb0df08f098318bf07f85dc7d9e1911.exe
2288	72b90d88372909913e0cbf91150b68d75eb0df08f098318bf07f85dc7d9e1911.exe
2288	72b90d88372909913e0cbf91150b68d75eb0df08f098318bf07f85dc7d9e1911.exe
2288	72b90d88372909913e0cbf91150b68d75eb0df08f098318bf07f85dc7d9e1911.exe
2288	72b90d88372909913e0cbf91150b68d75eb0df08f098318bf07f85dc7d9e1911.exe
2288	72b90d88372909913e0cbf91150b68d75eb0df08f098318bf07f85dc7d9e1911.exe
2288	72b90d88372909913e0cbf91150b68d75eb0df08f098318bf07f85dc7d9e1911.exe
2288	72b90d88372909913e0cbf91150b68d75eb0df08f098318bf07f85dc7d9e1911.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3764	rundll32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
2288	72b90d88372909913e0cbf91150b68d75eb0df08f098318bf07f85dc7d9e1911.exe
3764	rundll32.exe
3764	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2288 wrote to memory of 3764	2288	72b90d88372909913e0cbf91150b68d75eb0df08f098318bf07f85dc7d9e1911.exe	89
PID 2288 wrote to memory of 3764	2288	72b90d88372909913e0cbf91150b68d75eb0df08f098318bf07f85dc7d9e1911.exe	89
PID 2288 wrote to memory of 3764	2288	72b90d88372909913e0cbf91150b68d75eb0df08f098318bf07f85dc7d9e1911.exe	89

C:\Users\Admin\AppData\Local\Temp\72b90d88372909913e0cbf91150b68d75eb0df08f098318bf07f85dc7d9e1911.exe
"C:\Users\Admin\AppData\Local\Temp\72b90d88372909913e0cbf91150b68d75eb0df08f098318bf07f85dc7d9e1911.exe"
1⤵
- Modifies system executable filetype association
- Drops file in System32 directory
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2288
- C:\Windows\system\rundll32.exe
  C:\Windows\system\rundll32.exe
  2⤵
  - Executes dropped EXE
  - Modifies system executable filetype association
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of SetWindowsHookEx
  PID:3764

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Event Triggered Execution

1

T1546

Change Default File Association

1

T1546.001

Privilege Escalation

Event Triggered Execution

1

T1546

Change Default File Association

1

T1546.001

Defense Evasion

Modify Registry

1

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\notepad¢¬.exe

Filesize
77KB

MD5
7621fa15348b8846473f4dd5f6f8ca7e

SHA1
3e3ba2719f99fbae60c44de57cc91c91aba011f1

SHA256
c9cc0bcf9fce4cab58a0d53b302a9a322adfe907345ed3b0edf1196f0390b85d

SHA512
28d831e1926114bd49674f62ca70d1dfd1ddafd0f02f91fbc110125e3bbb71a146ce2004a07d77f478ade58c3e6d1d10f5488a889a03ef6b8f105cd07a344ead

Download Submit
C:\Windows\System\rundll32.exe

Filesize
78KB

MD5
4740fe6d7b0d282b0273b47a0146dfd1

SHA1
aa47f2a04431ba68011dd512ed4623752c9839f4

SHA256
11565783ed24ed936c00d407df0801928ec7d33ca0e072595e9d6967b41efc82

SHA512
9dadd612a50c58d0ce340ae3216fdb56a476ae063cc5b78a3045a537fc3bd98004902783fb61729d9f171d8296015803b5cbbe3f8c80c4d610eb7513699f42bc

Download Submit
memory/2288-0-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/2288-13-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads