81356627d78fa186586c63aada6e19cf4c65b55e0d1a9a2fa3f32bb23e35a7a0

General

Target

81356627d78fa186586c63aada6e19cf4c65b55e0d1a9a2fa3f32bb23e35a7a0.exe
Size

82KB
MD5

ecdea8419b22f25da2d665e22ccee4fb
SHA1

846ed5b3e538e24a0560da2f2b05d40eeb1ef8f5
SHA256

81356627d78fa186586c63aada6e19cf4c65b55e0d1a9a2fa3f32bb23e35a7a0
SHA512

b4f97a42893f954ac2629ac9621998a02d4b57f9f43785f0264ac2c2563be981d0a4ebbcc2b709c5524996bfe4686a72e19d5802e704ef7ddc3802382a377b39
SSDEEP

1536:RshfSWHHNvoLqNwDDGw02eQmh0HjWO+j0:GhfxHNIreQm+Hi5j0

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1680	rundll32.exe

Loads dropped DLL 2 IoCs

pid	Process
1744	81356627d78fa186586c63aada6e19cf4c65b55e0d1a9a2fa3f32bb23e35a7a0.exe
1744	81356627d78fa186586c63aada6e19cf4c65b55e0d1a9a2fa3f32bb23e35a7a0.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	81356627d78fa186586c63aada6e19cf4c65b55e0d1a9a2fa3f32bb23e35a7a0.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*"	81356627d78fa186586c63aada6e19cf4c65b55e0d1a9a2fa3f32bb23e35a7a0.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	81356627d78fa186586c63aada6e19cf4c65b55e0d1a9a2fa3f32bb23e35a7a0.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	81356627d78fa186586c63aada6e19cf4c65b55e0d1a9a2fa3f32bb23e35a7a0.exe
File created	C:\Windows\SysWOW64\¢«.exe	81356627d78fa186586c63aada6e19cf4c65b55e0d1a9a2fa3f32bb23e35a7a0.exe
File opened for modification	C:\Windows\SysWOW64\notepad¢¬.exe	81356627d78fa186586c63aada6e19cf4c65b55e0d1a9a2fa3f32bb23e35a7a0.exe
File created	C:\Windows\SysWOW64\notepad¢¬.exe	81356627d78fa186586c63aada6e19cf4c65b55e0d1a9a2fa3f32bb23e35a7a0.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system\rundll32.exe	81356627d78fa186586c63aada6e19cf4c65b55e0d1a9a2fa3f32bb23e35a7a0.exe
File created	C:\Windows\system\rundll32.exe	81356627d78fa186586c63aada6e19cf4c65b55e0d1a9a2fa3f32bb23e35a7a0.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	81356627d78fa186586c63aada6e19cf4c65b55e0d1a9a2fa3f32bb23e35a7a0.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\exefile\shell\open\command	81356627d78fa186586c63aada6e19cf4c65b55e0d1a9a2fa3f32bb23e35a7a0.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainSetup = "1726378663"	rundll32.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\MSipv	81356627d78fa186586c63aada6e19cf4c65b55e0d1a9a2fa3f32bb23e35a7a0.exe
Key created	\REGISTRY\MACHINE\Software\Classes\txtfile\shell\open\command	81356627d78fa186586c63aada6e19cf4c65b55e0d1a9a2fa3f32bb23e35a7a0.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	81356627d78fa186586c63aada6e19cf4c65b55e0d1a9a2fa3f32bb23e35a7a0.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad¢¬ %1"	81356627d78fa186586c63aada6e19cf4c65b55e0d1a9a2fa3f32bb23e35a7a0.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	rundll32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainUp = "1726378663"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*"	81356627d78fa186586c63aada6e19cf4c65b55e0d1a9a2fa3f32bb23e35a7a0.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad.exe %1"	81356627d78fa186586c63aada6e19cf4c65b55e0d1a9a2fa3f32bb23e35a7a0.exe
Key created	\REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command	rundll32.exe

Suspicious behavior: EnumeratesProcesses 14 IoCs

pid	Process
1744	81356627d78fa186586c63aada6e19cf4c65b55e0d1a9a2fa3f32bb23e35a7a0.exe
1744	81356627d78fa186586c63aada6e19cf4c65b55e0d1a9a2fa3f32bb23e35a7a0.exe
1744	81356627d78fa186586c63aada6e19cf4c65b55e0d1a9a2fa3f32bb23e35a7a0.exe
1744	81356627d78fa186586c63aada6e19cf4c65b55e0d1a9a2fa3f32bb23e35a7a0.exe
1744	81356627d78fa186586c63aada6e19cf4c65b55e0d1a9a2fa3f32bb23e35a7a0.exe
1744	81356627d78fa186586c63aada6e19cf4c65b55e0d1a9a2fa3f32bb23e35a7a0.exe
1744	81356627d78fa186586c63aada6e19cf4c65b55e0d1a9a2fa3f32bb23e35a7a0.exe
1744	81356627d78fa186586c63aada6e19cf4c65b55e0d1a9a2fa3f32bb23e35a7a0.exe
1744	81356627d78fa186586c63aada6e19cf4c65b55e0d1a9a2fa3f32bb23e35a7a0.exe
1744	81356627d78fa186586c63aada6e19cf4c65b55e0d1a9a2fa3f32bb23e35a7a0.exe
1744	81356627d78fa186586c63aada6e19cf4c65b55e0d1a9a2fa3f32bb23e35a7a0.exe
1744	81356627d78fa186586c63aada6e19cf4c65b55e0d1a9a2fa3f32bb23e35a7a0.exe
1744	81356627d78fa186586c63aada6e19cf4c65b55e0d1a9a2fa3f32bb23e35a7a0.exe
1744	81356627d78fa186586c63aada6e19cf4c65b55e0d1a9a2fa3f32bb23e35a7a0.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1680	rundll32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
1744	81356627d78fa186586c63aada6e19cf4c65b55e0d1a9a2fa3f32bb23e35a7a0.exe
1680	rundll32.exe
1680	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1744 wrote to memory of 1680	1744	81356627d78fa186586c63aada6e19cf4c65b55e0d1a9a2fa3f32bb23e35a7a0.exe	30
PID 1744 wrote to memory of 1680	1744	81356627d78fa186586c63aada6e19cf4c65b55e0d1a9a2fa3f32bb23e35a7a0.exe	30
PID 1744 wrote to memory of 1680	1744	81356627d78fa186586c63aada6e19cf4c65b55e0d1a9a2fa3f32bb23e35a7a0.exe	30
PID 1744 wrote to memory of 1680	1744	81356627d78fa186586c63aada6e19cf4c65b55e0d1a9a2fa3f32bb23e35a7a0.exe	30
PID 1744 wrote to memory of 1680	1744	81356627d78fa186586c63aada6e19cf4c65b55e0d1a9a2fa3f32bb23e35a7a0.exe	30
PID 1744 wrote to memory of 1680	1744	81356627d78fa186586c63aada6e19cf4c65b55e0d1a9a2fa3f32bb23e35a7a0.exe	30
PID 1744 wrote to memory of 1680	1744	81356627d78fa186586c63aada6e19cf4c65b55e0d1a9a2fa3f32bb23e35a7a0.exe	30

C:\Users\Admin\AppData\Local\Temp\81356627d78fa186586c63aada6e19cf4c65b55e0d1a9a2fa3f32bb23e35a7a0.exe
"C:\Users\Admin\AppData\Local\Temp\81356627d78fa186586c63aada6e19cf4c65b55e0d1a9a2fa3f32bb23e35a7a0.exe"
1⤵
- Loads dropped DLL
- 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:1744
- 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:1680

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Windows\SysWOW64\notepad¢¬.exe

Filesize
83KB

MD5
ac32abab1fc242cd2828c56b0b1fc980

SHA1
d3cd62d4977f7b0c254be51670b2a5b82d433754

SHA256
3b48a5cc7557915ad2f27405bcc6ea747db4a69bf7266ed5f914384040424d7a

SHA512
63fd38c6e134254e68f7ef47edc6e0135fad65c551150ae7476e76d6995884434a2db3c61c32d6e1e9174f5c3db83ab9d35b370d6a1f7c306f6fdca7861f7c9c

Download Submit
\Windows\system\rundll32.exe

Filesize
77KB

MD5
100e52a1549f08d486654f0adb7f4d26

SHA1
6951aa979706991fe667ac2033ae9934d398b873

SHA256
42982578f9fb75b20db1d6facbd66aea40620a5d8dfe4d8ff533dd72991e959f

SHA512
14b0696a8a544a3f334cc05d8ba15868a674726b83e817cdb4d70d6e050a58906adbd880e47c28bab14ced89312426ca8632ea2385bc162be007a02b1ce352d4

Download Submit
memory/1680-18-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/1680-22-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/1744-0-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/1744-11-0x00000000002E0000-0x00000000002F6000-memory.dmp

Filesize
88KB

Download
memory/1744-20-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/1744-21-0x00000000002E0000-0x00000000002E2000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads