3ee98f12f1b1475da3fc0cd2c7900458a6900a8c16c9c9b550bc9112b1ca8a3f

General

Target

3ee98f12f1b1475da3fc0cd2c7900458a6900a8c16c9c9b550bc9112b1ca8a3f.exe
Size

78KB
MD5

aeb09a87e30f98433009d79c33a4f993
SHA1

1851d56e9ec5ff9fd47e2c836e47d5815eb03ef2
SHA256

3ee98f12f1b1475da3fc0cd2c7900458a6900a8c16c9c9b550bc9112b1ca8a3f
SHA512

b7b70cfa636020e24815515c1f9c72e7cb444601c715b7eaddc391917f85a0ac7096557dad08527066715d60ef99e0b99de876db402e2ee507309bbb2f9685a6
SSDEEP

1536:RshfSWHHNvoLqNwDDGw02eQmh0HjWOg32b:GhfxHNIreQm+HiB32b

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2652	rundll32.exe

Loads dropped DLL 2 IoCs

pid	Process
2760	3ee98f12f1b1475da3fc0cd2c7900458a6900a8c16c9c9b550bc9112b1ca8a3f.exe
2760	3ee98f12f1b1475da3fc0cd2c7900458a6900a8c16c9c9b550bc9112b1ca8a3f.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	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	3ee98f12f1b1475da3fc0cd2c7900458a6900a8c16c9c9b550bc9112b1ca8a3f.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*"	3ee98f12f1b1475da3fc0cd2c7900458a6900a8c16c9c9b550bc9112b1ca8a3f.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	3ee98f12f1b1475da3fc0cd2c7900458a6900a8c16c9c9b550bc9112b1ca8a3f.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\¢«.exe	3ee98f12f1b1475da3fc0cd2c7900458a6900a8c16c9c9b550bc9112b1ca8a3f.exe
File opened for modification	C:\Windows\SysWOW64\notepad¢¬.exe	3ee98f12f1b1475da3fc0cd2c7900458a6900a8c16c9c9b550bc9112b1ca8a3f.exe
File created	C:\Windows\SysWOW64\notepad¢¬.exe	3ee98f12f1b1475da3fc0cd2c7900458a6900a8c16c9c9b550bc9112b1ca8a3f.exe
File opened for modification	C:\Windows\SysWOW64\¢«.exe	3ee98f12f1b1475da3fc0cd2c7900458a6900a8c16c9c9b550bc9112b1ca8a3f.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\system\rundll32.exe	3ee98f12f1b1475da3fc0cd2c7900458a6900a8c16c9c9b550bc9112b1ca8a3f.exe
File opened for modification	C:\Windows\system\rundll32.exe	3ee98f12f1b1475da3fc0cd2c7900458a6900a8c16c9c9b550bc9112b1ca8a3f.exe

Modifies registry class 15 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command	3ee98f12f1b1475da3fc0cd2c7900458a6900a8c16c9c9b550bc9112b1ca8a3f.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainSetup = "1697062593"	rundll32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainUp = "1697062593"	rundll32.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
Key created	\REGISTRY\MACHINE\Software\Classes\txtfile\shell\open\command	rundll32.exe
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	3ee98f12f1b1475da3fc0cd2c7900458a6900a8c16c9c9b550bc9112b1ca8a3f.exe
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	rundll32.exe
Key created	\REGISTRY\MACHINE\Software\Classes\txtfile\shell\open\command	3ee98f12f1b1475da3fc0cd2c7900458a6900a8c16c9c9b550bc9112b1ca8a3f.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad¢¬ %1"	3ee98f12f1b1475da3fc0cd2c7900458a6900a8c16c9c9b550bc9112b1ca8a3f.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\" %*"	3ee98f12f1b1475da3fc0cd2c7900458a6900a8c16c9c9b550bc9112b1ca8a3f.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	3ee98f12f1b1475da3fc0cd2c7900458a6900a8c16c9c9b550bc9112b1ca8a3f.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainVer = "506"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad.exe %1"	3ee98f12f1b1475da3fc0cd2c7900458a6900a8c16c9c9b550bc9112b1ca8a3f.exe

Suspicious behavior: EnumeratesProcesses 14 IoCs

pid	Process
2760	3ee98f12f1b1475da3fc0cd2c7900458a6900a8c16c9c9b550bc9112b1ca8a3f.exe
2760	3ee98f12f1b1475da3fc0cd2c7900458a6900a8c16c9c9b550bc9112b1ca8a3f.exe
2760	3ee98f12f1b1475da3fc0cd2c7900458a6900a8c16c9c9b550bc9112b1ca8a3f.exe
2760	3ee98f12f1b1475da3fc0cd2c7900458a6900a8c16c9c9b550bc9112b1ca8a3f.exe
2760	3ee98f12f1b1475da3fc0cd2c7900458a6900a8c16c9c9b550bc9112b1ca8a3f.exe
2760	3ee98f12f1b1475da3fc0cd2c7900458a6900a8c16c9c9b550bc9112b1ca8a3f.exe
2760	3ee98f12f1b1475da3fc0cd2c7900458a6900a8c16c9c9b550bc9112b1ca8a3f.exe
2760	3ee98f12f1b1475da3fc0cd2c7900458a6900a8c16c9c9b550bc9112b1ca8a3f.exe
2760	3ee98f12f1b1475da3fc0cd2c7900458a6900a8c16c9c9b550bc9112b1ca8a3f.exe
2760	3ee98f12f1b1475da3fc0cd2c7900458a6900a8c16c9c9b550bc9112b1ca8a3f.exe
2760	3ee98f12f1b1475da3fc0cd2c7900458a6900a8c16c9c9b550bc9112b1ca8a3f.exe
2760	3ee98f12f1b1475da3fc0cd2c7900458a6900a8c16c9c9b550bc9112b1ca8a3f.exe
2760	3ee98f12f1b1475da3fc0cd2c7900458a6900a8c16c9c9b550bc9112b1ca8a3f.exe
2760	3ee98f12f1b1475da3fc0cd2c7900458a6900a8c16c9c9b550bc9112b1ca8a3f.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
2760	3ee98f12f1b1475da3fc0cd2c7900458a6900a8c16c9c9b550bc9112b1ca8a3f.exe
2652	rundll32.exe
2652	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2760 wrote to memory of 2652	2760	3ee98f12f1b1475da3fc0cd2c7900458a6900a8c16c9c9b550bc9112b1ca8a3f.exe	28
PID 2760 wrote to memory of 2652	2760	3ee98f12f1b1475da3fc0cd2c7900458a6900a8c16c9c9b550bc9112b1ca8a3f.exe	28
PID 2760 wrote to memory of 2652	2760	3ee98f12f1b1475da3fc0cd2c7900458a6900a8c16c9c9b550bc9112b1ca8a3f.exe	28
PID 2760 wrote to memory of 2652	2760	3ee98f12f1b1475da3fc0cd2c7900458a6900a8c16c9c9b550bc9112b1ca8a3f.exe	28
PID 2760 wrote to memory of 2652	2760	3ee98f12f1b1475da3fc0cd2c7900458a6900a8c16c9c9b550bc9112b1ca8a3f.exe	28
PID 2760 wrote to memory of 2652	2760	3ee98f12f1b1475da3fc0cd2c7900458a6900a8c16c9c9b550bc9112b1ca8a3f.exe	28
PID 2760 wrote to memory of 2652	2760	3ee98f12f1b1475da3fc0cd2c7900458a6900a8c16c9c9b550bc9112b1ca8a3f.exe	28

C:\Users\Admin\AppData\Local\Temp\3ee98f12f1b1475da3fc0cd2c7900458a6900a8c16c9c9b550bc9112b1ca8a3f.exe
"C:\Users\Admin\AppData\Local\Temp\3ee98f12f1b1475da3fc0cd2c7900458a6900a8c16c9c9b550bc9112b1ca8a3f.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:2760
- C:\Windows\system\rundll32.exe
  C:\Windows\system\rundll32.exe
  2⤵
  - Executes dropped EXE
  - Modifies system executable filetype association
  - Modifies registry class
  - Suspicious use of SetWindowsHookEx
  PID:2652

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
77KB

MD5
eed0dbe90c50c4ca33feaca3074ae8c0

SHA1
8b75b57b8329e0dff47fecb9e0dd888231e96580

SHA256
3b663acba305358e33066f81207dd33ea4134eaaccc96efe2820f99a41344ed5

SHA512
dd5835c1e1e3881605ab930b302c269dcdec01f43c4b369c0f965dd532f4f303c16e090074ee4421103b94c6056ae2fc75e3646a75d09c5eba6922200a753f9e

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

Filesize
81KB

MD5
5df507b12f428dc720d49efc52baf4bd

SHA1
1296731422f0d4a9cc39c9a50b98b72767c82e26

SHA256
f092b5e3ef20c9e60c795ee7a3a804cde528fb7532391d7f04b840c43435259a

SHA512
d60fbe92c157e3a51f66a988457801f4b2ea92863b319e171caa1bca42fb6b8beb5147b72e3685c8791ed6bf5474d7172eb5ae0193b1ca28491c7fd3b1013c81

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

Filesize
81KB

MD5
5df507b12f428dc720d49efc52baf4bd

SHA1
1296731422f0d4a9cc39c9a50b98b72767c82e26

SHA256
f092b5e3ef20c9e60c795ee7a3a804cde528fb7532391d7f04b840c43435259a

SHA512
d60fbe92c157e3a51f66a988457801f4b2ea92863b319e171caa1bca42fb6b8beb5147b72e3685c8791ed6bf5474d7172eb5ae0193b1ca28491c7fd3b1013c81

Download Submit
\Windows\system\rundll32.exe

Filesize
81KB

MD5
5df507b12f428dc720d49efc52baf4bd

SHA1
1296731422f0d4a9cc39c9a50b98b72767c82e26

SHA256
f092b5e3ef20c9e60c795ee7a3a804cde528fb7532391d7f04b840c43435259a

SHA512
d60fbe92c157e3a51f66a988457801f4b2ea92863b319e171caa1bca42fb6b8beb5147b72e3685c8791ed6bf5474d7172eb5ae0193b1ca28491c7fd3b1013c81

Download Submit
\Windows\system\rundll32.exe

Filesize
81KB

MD5
5df507b12f428dc720d49efc52baf4bd

SHA1
1296731422f0d4a9cc39c9a50b98b72767c82e26

SHA256
f092b5e3ef20c9e60c795ee7a3a804cde528fb7532391d7f04b840c43435259a

SHA512
d60fbe92c157e3a51f66a988457801f4b2ea92863b319e171caa1bca42fb6b8beb5147b72e3685c8791ed6bf5474d7172eb5ae0193b1ca28491c7fd3b1013c81

Download Submit
memory/2652-21-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/2760-0-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/2760-12-0x0000000000240000-0x0000000000256000-memory.dmp

Filesize
88KB

Download
memory/2760-20-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2760-19-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads