b9e68e02f9a98106c51ef36ad10029e4dc8fceaebd5b4f903e1a3ad7fd0a27eb

General

Target

b9e68e02f9a98106c51ef36ad10029e4dc8fceaebd5b4f903e1a3ad7fd0a27eb.exe
Size

82KB
MD5

95cff6a83b1881f8e64fd1968dbb0329
SHA1

651ee0d92a2c845faf23b9419a8022cefdaa4e0d
SHA256

b9e68e02f9a98106c51ef36ad10029e4dc8fceaebd5b4f903e1a3ad7fd0a27eb
SHA512

c499b101165efd25b25649a7e048e614e87db4f7ea37b92d2691087edb62f4e6e2fb74e204eb77a19d1f7a5c4e60e087e60bcecf373c0adb0b9a47c080fe18cf
SSDEEP

768:agO5xRYi+SfSWHHNvvG5bnl/NqNwsKVDstHxYD0p1aXKynF0vQmYZS0HdJnfWOKr:RshfSWHHNvoLqNwDDGw02eQmh0HjWOKr

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2740	rundll32.exe

Loads dropped DLL 2 IoCs

pid	Process
1656	b9e68e02f9a98106c51ef36ad10029e4dc8fceaebd5b4f903e1a3ad7fd0a27eb.exe
1656	b9e68e02f9a98106c51ef36ad10029e4dc8fceaebd5b4f903e1a3ad7fd0a27eb.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	b9e68e02f9a98106c51ef36ad10029e4dc8fceaebd5b4f903e1a3ad7fd0a27eb.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*"	b9e68e02f9a98106c51ef36ad10029e4dc8fceaebd5b4f903e1a3ad7fd0a27eb.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	b9e68e02f9a98106c51ef36ad10029e4dc8fceaebd5b4f903e1a3ad7fd0a27eb.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	b9e68e02f9a98106c51ef36ad10029e4dc8fceaebd5b4f903e1a3ad7fd0a27eb.exe
File created	C:\Windows\SysWOW64\¢«.exe	b9e68e02f9a98106c51ef36ad10029e4dc8fceaebd5b4f903e1a3ad7fd0a27eb.exe
File opened for modification	C:\Windows\SysWOW64\notepad¢¬.exe	b9e68e02f9a98106c51ef36ad10029e4dc8fceaebd5b4f903e1a3ad7fd0a27eb.exe
File created	C:\Windows\SysWOW64\notepad¢¬.exe	b9e68e02f9a98106c51ef36ad10029e4dc8fceaebd5b4f903e1a3ad7fd0a27eb.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system\rundll32.exe	b9e68e02f9a98106c51ef36ad10029e4dc8fceaebd5b4f903e1a3ad7fd0a27eb.exe
File created	C:\Windows\system\rundll32.exe	b9e68e02f9a98106c51ef36ad10029e4dc8fceaebd5b4f903e1a3ad7fd0a27eb.exe

Modifies registry class 15 IoCs

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainSetup = "1697427613"	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
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\" %*"	b9e68e02f9a98106c51ef36ad10029e4dc8fceaebd5b4f903e1a3ad7fd0a27eb.exe
Key created	\REGISTRY\MACHINE\Software\Classes\txtfile\shell\open\command	b9e68e02f9a98106c51ef36ad10029e4dc8fceaebd5b4f903e1a3ad7fd0a27eb.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad¢¬ %1"	b9e68e02f9a98106c51ef36ad10029e4dc8fceaebd5b4f903e1a3ad7fd0a27eb.exe
Key created	\REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command	b9e68e02f9a98106c51ef36ad10029e4dc8fceaebd5b4f903e1a3ad7fd0a27eb.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad.exe %1"	b9e68e02f9a98106c51ef36ad10029e4dc8fceaebd5b4f903e1a3ad7fd0a27eb.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	b9e68e02f9a98106c51ef36ad10029e4dc8fceaebd5b4f903e1a3ad7fd0a27eb.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\MSipv	b9e68e02f9a98106c51ef36ad10029e4dc8fceaebd5b4f903e1a3ad7fd0a27eb.exe
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	rundll32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainUp = "1697427613"	rundll32.exe

Suspicious behavior: EnumeratesProcesses 14 IoCs

pid	Process
1656	b9e68e02f9a98106c51ef36ad10029e4dc8fceaebd5b4f903e1a3ad7fd0a27eb.exe
1656	b9e68e02f9a98106c51ef36ad10029e4dc8fceaebd5b4f903e1a3ad7fd0a27eb.exe
1656	b9e68e02f9a98106c51ef36ad10029e4dc8fceaebd5b4f903e1a3ad7fd0a27eb.exe
1656	b9e68e02f9a98106c51ef36ad10029e4dc8fceaebd5b4f903e1a3ad7fd0a27eb.exe
1656	b9e68e02f9a98106c51ef36ad10029e4dc8fceaebd5b4f903e1a3ad7fd0a27eb.exe
1656	b9e68e02f9a98106c51ef36ad10029e4dc8fceaebd5b4f903e1a3ad7fd0a27eb.exe
1656	b9e68e02f9a98106c51ef36ad10029e4dc8fceaebd5b4f903e1a3ad7fd0a27eb.exe
1656	b9e68e02f9a98106c51ef36ad10029e4dc8fceaebd5b4f903e1a3ad7fd0a27eb.exe
1656	b9e68e02f9a98106c51ef36ad10029e4dc8fceaebd5b4f903e1a3ad7fd0a27eb.exe
1656	b9e68e02f9a98106c51ef36ad10029e4dc8fceaebd5b4f903e1a3ad7fd0a27eb.exe
1656	b9e68e02f9a98106c51ef36ad10029e4dc8fceaebd5b4f903e1a3ad7fd0a27eb.exe
1656	b9e68e02f9a98106c51ef36ad10029e4dc8fceaebd5b4f903e1a3ad7fd0a27eb.exe
1656	b9e68e02f9a98106c51ef36ad10029e4dc8fceaebd5b4f903e1a3ad7fd0a27eb.exe
1656	b9e68e02f9a98106c51ef36ad10029e4dc8fceaebd5b4f903e1a3ad7fd0a27eb.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2740	rundll32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
1656	b9e68e02f9a98106c51ef36ad10029e4dc8fceaebd5b4f903e1a3ad7fd0a27eb.exe
2740	rundll32.exe
2740	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1656 wrote to memory of 2740	1656	b9e68e02f9a98106c51ef36ad10029e4dc8fceaebd5b4f903e1a3ad7fd0a27eb.exe	27
PID 1656 wrote to memory of 2740	1656	b9e68e02f9a98106c51ef36ad10029e4dc8fceaebd5b4f903e1a3ad7fd0a27eb.exe	27
PID 1656 wrote to memory of 2740	1656	b9e68e02f9a98106c51ef36ad10029e4dc8fceaebd5b4f903e1a3ad7fd0a27eb.exe	27
PID 1656 wrote to memory of 2740	1656	b9e68e02f9a98106c51ef36ad10029e4dc8fceaebd5b4f903e1a3ad7fd0a27eb.exe	27
PID 1656 wrote to memory of 2740	1656	b9e68e02f9a98106c51ef36ad10029e4dc8fceaebd5b4f903e1a3ad7fd0a27eb.exe	27
PID 1656 wrote to memory of 2740	1656	b9e68e02f9a98106c51ef36ad10029e4dc8fceaebd5b4f903e1a3ad7fd0a27eb.exe	27
PID 1656 wrote to memory of 2740	1656	b9e68e02f9a98106c51ef36ad10029e4dc8fceaebd5b4f903e1a3ad7fd0a27eb.exe	27

C:\Users\Admin\AppData\Local\Temp\b9e68e02f9a98106c51ef36ad10029e4dc8fceaebd5b4f903e1a3ad7fd0a27eb.exe
"C:\Users\Admin\AppData\Local\Temp\b9e68e02f9a98106c51ef36ad10029e4dc8fceaebd5b4f903e1a3ad7fd0a27eb.exe"
1⤵
- Loads dropped DLL
- Modifies system executable filetype association
- Drops file in System32 directory
- Drops file in Windows directory
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1656
- C:\Windows\system\rundll32.exe
  C:\Windows\system\rundll32.exe
  2⤵
  - Executes dropped EXE
  - Modifies system executable filetype association
  - Modifies registry class
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of SetWindowsHookEx
  PID:2740

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\SysWOW64\notepad¢¬.exe

Filesize
81KB

MD5
1fd2938b800fe1bd35ba43659a767cdb

SHA1
db6225bbc52c9dd6f200bad781c7b8e8546aaced

SHA256
58ad8910c42182adf6bce7ace304d8b29593a771a713131c0aee534491c859d8

SHA512
1d17d330782ecbf53687eb93378ff2501d8ad386abcfeae07e74f3c0843d73215c186ea96c52de7153bbe2336219fd263d19af5425a7d4275d08c73b5a29ac73

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

Filesize
75KB

MD5
debb508d1accd4896a48d5b5e6664bd3

SHA1
b8e2801d941dc1c3608e0e791ad30932aa4e3de0

SHA256
7b0b0d78883bf6df27d0c6505cc3f2512bfd7acb235d1348921e8d5ee3ae0eb5

SHA512
f4250f306b1184a9952657d87070923d258cd0564ca673b7e882b60e8daa705840d63c359e4511315e6e707a6435dbd56aebb4a44142e7c8fce1980397a85413

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

Filesize
75KB

MD5
debb508d1accd4896a48d5b5e6664bd3

SHA1
b8e2801d941dc1c3608e0e791ad30932aa4e3de0

SHA256
7b0b0d78883bf6df27d0c6505cc3f2512bfd7acb235d1348921e8d5ee3ae0eb5

SHA512
f4250f306b1184a9952657d87070923d258cd0564ca673b7e882b60e8daa705840d63c359e4511315e6e707a6435dbd56aebb4a44142e7c8fce1980397a85413

Download Submit
\Windows\system\rundll32.exe

Filesize
75KB

MD5
debb508d1accd4896a48d5b5e6664bd3

SHA1
b8e2801d941dc1c3608e0e791ad30932aa4e3de0

SHA256
7b0b0d78883bf6df27d0c6505cc3f2512bfd7acb235d1348921e8d5ee3ae0eb5

SHA512
f4250f306b1184a9952657d87070923d258cd0564ca673b7e882b60e8daa705840d63c359e4511315e6e707a6435dbd56aebb4a44142e7c8fce1980397a85413

Download Submit
\Windows\system\rundll32.exe

Filesize
75KB

MD5
debb508d1accd4896a48d5b5e6664bd3

SHA1
b8e2801d941dc1c3608e0e791ad30932aa4e3de0

SHA256
7b0b0d78883bf6df27d0c6505cc3f2512bfd7acb235d1348921e8d5ee3ae0eb5

SHA512
f4250f306b1184a9952657d87070923d258cd0564ca673b7e882b60e8daa705840d63c359e4511315e6e707a6435dbd56aebb4a44142e7c8fce1980397a85413

Download Submit
memory/1656-0-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/1656-12-0x0000000000340000-0x0000000000356000-memory.dmp

Filesize
88KB

Download
memory/1656-19-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/1656-20-0x0000000000340000-0x0000000000346000-memory.dmp

Filesize
24KB

Download
memory/2740-21-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads