a9611cfea7f461c399d82b43f8ba4d540103c71f4a3af46374df32e75a778cb2

General

Target

a9611cfea7f461c399d82b43f8ba4d540103c71f4a3af46374df32e75a778cb2.exe
Size

74KB
MD5

0431daf06715c309b43ce95b4799976c
SHA1

3766847170acf9b9c1f2c555c8f2608a3f9f200d
SHA256

a9611cfea7f461c399d82b43f8ba4d540103c71f4a3af46374df32e75a778cb2
SHA512

20d3aff9f994972567868be69c46b969a996bcc7737abbc9b1204afa8d76be6b4ce59f94090d6502bfbc341bcfec023504911e55012f773e568290723fd4c407
SSDEEP

768:agO5xRYi+SfSWHHNvvG5bnl/NqNwsKVDstHxYD0p1aXKynF0vQmYZS0HdJnfWOH:RshfSWHHNvoLqNwDDGw02eQmh0HjWOH

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2724	rundll32.exe

Loads dropped DLL 2 IoCs

pid	Process
2756	a9611cfea7f461c399d82b43f8ba4d540103c71f4a3af46374df32e75a778cb2.exe
2756	a9611cfea7f461c399d82b43f8ba4d540103c71f4a3af46374df32e75a778cb2.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	a9611cfea7f461c399d82b43f8ba4d540103c71f4a3af46374df32e75a778cb2.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*"	a9611cfea7f461c399d82b43f8ba4d540103c71f4a3af46374df32e75a778cb2.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	a9611cfea7f461c399d82b43f8ba4d540103c71f4a3af46374df32e75a778cb2.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\notepad¢¬.exe	a9611cfea7f461c399d82b43f8ba4d540103c71f4a3af46374df32e75a778cb2.exe
File created	C:\Windows\SysWOW64\notepad¢¬.exe	a9611cfea7f461c399d82b43f8ba4d540103c71f4a3af46374df32e75a778cb2.exe
File opened for modification	C:\Windows\SysWOW64\¢«.exe	a9611cfea7f461c399d82b43f8ba4d540103c71f4a3af46374df32e75a778cb2.exe
File created	C:\Windows\SysWOW64\¢«.exe	a9611cfea7f461c399d82b43f8ba4d540103c71f4a3af46374df32e75a778cb2.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\system\rundll32.exe	a9611cfea7f461c399d82b43f8ba4d540103c71f4a3af46374df32e75a778cb2.exe
File opened for modification	C:\Windows\system\rundll32.exe	a9611cfea7f461c399d82b43f8ba4d540103c71f4a3af46374df32e75a778cb2.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	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a9611cfea7f461c399d82b43f8ba4d540103c71f4a3af46374df32e75a778cb2.exe

Modifies registry class 15 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	a9611cfea7f461c399d82b43f8ba4d540103c71f4a3af46374df32e75a778cb2.exe
Key created	\REGISTRY\MACHINE\Software\Classes\txtfile\shell\open\command	a9611cfea7f461c399d82b43f8ba4d540103c71f4a3af46374df32e75a778cb2.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad¢¬ %1"	a9611cfea7f461c399d82b43f8ba4d540103c71f4a3af46374df32e75a778cb2.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainUp = "1725170716"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad¢¬ %1"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*"	a9611cfea7f461c399d82b43f8ba4d540103c71f4a3af46374df32e75a778cb2.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad.exe %1"	a9611cfea7f461c399d82b43f8ba4d540103c71f4a3af46374df32e75a778cb2.exe
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	rundll32.exe
Key created	\REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command	rundll32.exe
Key created	\REGISTRY\MACHINE\Software\Classes\txtfile\shell\open\command	rundll32.exe
Key created	\REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command	a9611cfea7f461c399d82b43f8ba4d540103c71f4a3af46374df32e75a778cb2.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	a9611cfea7f461c399d82b43f8ba4d540103c71f4a3af46374df32e75a778cb2.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainSetup = "1725170716"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	rundll32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainVer = "506"	rundll32.exe

Suspicious behavior: EnumeratesProcesses 14 IoCs

pid	Process
2756	a9611cfea7f461c399d82b43f8ba4d540103c71f4a3af46374df32e75a778cb2.exe
2756	a9611cfea7f461c399d82b43f8ba4d540103c71f4a3af46374df32e75a778cb2.exe
2756	a9611cfea7f461c399d82b43f8ba4d540103c71f4a3af46374df32e75a778cb2.exe
2756	a9611cfea7f461c399d82b43f8ba4d540103c71f4a3af46374df32e75a778cb2.exe
2756	a9611cfea7f461c399d82b43f8ba4d540103c71f4a3af46374df32e75a778cb2.exe
2756	a9611cfea7f461c399d82b43f8ba4d540103c71f4a3af46374df32e75a778cb2.exe
2756	a9611cfea7f461c399d82b43f8ba4d540103c71f4a3af46374df32e75a778cb2.exe
2756	a9611cfea7f461c399d82b43f8ba4d540103c71f4a3af46374df32e75a778cb2.exe
2756	a9611cfea7f461c399d82b43f8ba4d540103c71f4a3af46374df32e75a778cb2.exe
2756	a9611cfea7f461c399d82b43f8ba4d540103c71f4a3af46374df32e75a778cb2.exe
2756	a9611cfea7f461c399d82b43f8ba4d540103c71f4a3af46374df32e75a778cb2.exe
2756	a9611cfea7f461c399d82b43f8ba4d540103c71f4a3af46374df32e75a778cb2.exe
2756	a9611cfea7f461c399d82b43f8ba4d540103c71f4a3af46374df32e75a778cb2.exe
2756	a9611cfea7f461c399d82b43f8ba4d540103c71f4a3af46374df32e75a778cb2.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2724	rundll32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
2756	a9611cfea7f461c399d82b43f8ba4d540103c71f4a3af46374df32e75a778cb2.exe
2724	rundll32.exe
2724	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2756 wrote to memory of 2724	2756	a9611cfea7f461c399d82b43f8ba4d540103c71f4a3af46374df32e75a778cb2.exe	30
PID 2756 wrote to memory of 2724	2756	a9611cfea7f461c399d82b43f8ba4d540103c71f4a3af46374df32e75a778cb2.exe	30
PID 2756 wrote to memory of 2724	2756	a9611cfea7f461c399d82b43f8ba4d540103c71f4a3af46374df32e75a778cb2.exe	30
PID 2756 wrote to memory of 2724	2756	a9611cfea7f461c399d82b43f8ba4d540103c71f4a3af46374df32e75a778cb2.exe	30
PID 2756 wrote to memory of 2724	2756	a9611cfea7f461c399d82b43f8ba4d540103c71f4a3af46374df32e75a778cb2.exe	30
PID 2756 wrote to memory of 2724	2756	a9611cfea7f461c399d82b43f8ba4d540103c71f4a3af46374df32e75a778cb2.exe	30
PID 2756 wrote to memory of 2724	2756	a9611cfea7f461c399d82b43f8ba4d540103c71f4a3af46374df32e75a778cb2.exe	30

C:\Users\Admin\AppData\Local\Temp\a9611cfea7f461c399d82b43f8ba4d540103c71f4a3af46374df32e75a778cb2.exe
"C:\Users\Admin\AppData\Local\Temp\a9611cfea7f461c399d82b43f8ba4d540103c71f4a3af46374df32e75a778cb2.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:2756
- 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:2724

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
85KB

MD5
f1db39f4df7dfb30b971ecc3fa31a99e

SHA1
6e64fac2d67c7b58582bec0ad69cc12f551b7d04

SHA256
9b65e944f0d4d228dea4f3c956734c64a5d723aff8e112e0926252bede6e92a1

SHA512
9c36743000938f02c94ef37ed51eb1bc1687f1bd582a8df9667bf4599b1d1b472adeb06cd9fa965cc01b39ffacd2c160fb656f44c032b91d83989c8c1bb12e5c

Download Submit
\Windows\system\rundll32.exe

Filesize
77KB

MD5
ce0803426c48bb38672288d17f6ca2a8

SHA1
8ffa323dad4e5b4cb52e668b19c518d96ebcd238

SHA256
5e5a7d93ce804f08d47edc38d8a70a27079c5174e3d01bc203447dff934099ee

SHA512
af2b5d1fdd6c212ce885d74ae0b84e037e79286d35d2aec44d7bc63a3eff01dfaed43bcb88ae804b05c671a0f2df3fd3b75a568d5dd1563269c15996f3d50a95

Download Submit
memory/2724-20-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/2756-0-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/2756-11-0x00000000003B0000-0x00000000003C6000-memory.dmp

Filesize
88KB

Download
memory/2756-19-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads