1a0d1982927ae271ecf719267e1daa7ad616be997dfa7d9a3c8c4c95644f8f13

General

Target

1a0d1982927ae271ecf719267e1daa7ad616be997dfa7d9a3c8c4c95644f8f13.exe
Size

81KB
MD5

7b3b6b663bc770e04e31f56591c9f022
SHA1

682582f5f9912eac350b111182bba3ef7f231e76
SHA256

1a0d1982927ae271ecf719267e1daa7ad616be997dfa7d9a3c8c4c95644f8f13
SHA512

72e8c59f3845b6bb10b75f96cf0a8822e457902d12d6c97b7c69d71ed5e5b8ea0563985b0a53c3eff4f394b387cb8672fb8e3bf3ecb6b572705043a9000ea7b8
SSDEEP

1536:RshfSWHHNvoLqNwDDGw02eQmh0HjWOWjLfvw:GhfxHNIreQm+Hi5jLfvw

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
3872	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	1a0d1982927ae271ecf719267e1daa7ad616be997dfa7d9a3c8c4c95644f8f13.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*"	1a0d1982927ae271ecf719267e1daa7ad616be997dfa7d9a3c8c4c95644f8f13.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	1a0d1982927ae271ecf719267e1daa7ad616be997dfa7d9a3c8c4c95644f8f13.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	1a0d1982927ae271ecf719267e1daa7ad616be997dfa7d9a3c8c4c95644f8f13.exe
File created	C:\Windows\SysWOW64\¢«.exe	1a0d1982927ae271ecf719267e1daa7ad616be997dfa7d9a3c8c4c95644f8f13.exe
File opened for modification	C:\Windows\SysWOW64\notepad¢¬.exe	1a0d1982927ae271ecf719267e1daa7ad616be997dfa7d9a3c8c4c95644f8f13.exe
File created	C:\Windows\SysWOW64\notepad¢¬.exe	1a0d1982927ae271ecf719267e1daa7ad616be997dfa7d9a3c8c4c95644f8f13.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system\rundll32.exe	1a0d1982927ae271ecf719267e1daa7ad616be997dfa7d9a3c8c4c95644f8f13.exe
File created	C:\Windows\system\rundll32.exe	1a0d1982927ae271ecf719267e1daa7ad616be997dfa7d9a3c8c4c95644f8f13.exe

Modifies registry class 15 IoCs

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainUp = "1695369223"	rundll32.exe
Key created	\REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad.exe %1"	1a0d1982927ae271ecf719267e1daa7ad616be997dfa7d9a3c8c4c95644f8f13.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad¢¬ %1"	1a0d1982927ae271ecf719267e1daa7ad616be997dfa7d9a3c8c4c95644f8f13.exe
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	rundll32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainVer = "506"	rundll32.exe
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	1a0d1982927ae271ecf719267e1daa7ad616be997dfa7d9a3c8c4c95644f8f13.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*"	1a0d1982927ae271ecf719267e1daa7ad616be997dfa7d9a3c8c4c95644f8f13.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad¢¬ %1"	rundll32.exe
Key created	\REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command	1a0d1982927ae271ecf719267e1daa7ad616be997dfa7d9a3c8c4c95644f8f13.exe
Key created	\REGISTRY\MACHINE\Software\Classes\txtfile\shell\open\command	1a0d1982927ae271ecf719267e1daa7ad616be997dfa7d9a3c8c4c95644f8f13.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	1a0d1982927ae271ecf719267e1daa7ad616be997dfa7d9a3c8c4c95644f8f13.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainSetup = "1695369223"	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

Suspicious behavior: EnumeratesProcesses 28 IoCs

pid	Process
1296	1a0d1982927ae271ecf719267e1daa7ad616be997dfa7d9a3c8c4c95644f8f13.exe
1296	1a0d1982927ae271ecf719267e1daa7ad616be997dfa7d9a3c8c4c95644f8f13.exe
1296	1a0d1982927ae271ecf719267e1daa7ad616be997dfa7d9a3c8c4c95644f8f13.exe
1296	1a0d1982927ae271ecf719267e1daa7ad616be997dfa7d9a3c8c4c95644f8f13.exe
1296	1a0d1982927ae271ecf719267e1daa7ad616be997dfa7d9a3c8c4c95644f8f13.exe
1296	1a0d1982927ae271ecf719267e1daa7ad616be997dfa7d9a3c8c4c95644f8f13.exe
1296	1a0d1982927ae271ecf719267e1daa7ad616be997dfa7d9a3c8c4c95644f8f13.exe
1296	1a0d1982927ae271ecf719267e1daa7ad616be997dfa7d9a3c8c4c95644f8f13.exe
1296	1a0d1982927ae271ecf719267e1daa7ad616be997dfa7d9a3c8c4c95644f8f13.exe
1296	1a0d1982927ae271ecf719267e1daa7ad616be997dfa7d9a3c8c4c95644f8f13.exe
1296	1a0d1982927ae271ecf719267e1daa7ad616be997dfa7d9a3c8c4c95644f8f13.exe
1296	1a0d1982927ae271ecf719267e1daa7ad616be997dfa7d9a3c8c4c95644f8f13.exe
1296	1a0d1982927ae271ecf719267e1daa7ad616be997dfa7d9a3c8c4c95644f8f13.exe
1296	1a0d1982927ae271ecf719267e1daa7ad616be997dfa7d9a3c8c4c95644f8f13.exe
1296	1a0d1982927ae271ecf719267e1daa7ad616be997dfa7d9a3c8c4c95644f8f13.exe
1296	1a0d1982927ae271ecf719267e1daa7ad616be997dfa7d9a3c8c4c95644f8f13.exe
1296	1a0d1982927ae271ecf719267e1daa7ad616be997dfa7d9a3c8c4c95644f8f13.exe
1296	1a0d1982927ae271ecf719267e1daa7ad616be997dfa7d9a3c8c4c95644f8f13.exe
1296	1a0d1982927ae271ecf719267e1daa7ad616be997dfa7d9a3c8c4c95644f8f13.exe
1296	1a0d1982927ae271ecf719267e1daa7ad616be997dfa7d9a3c8c4c95644f8f13.exe
1296	1a0d1982927ae271ecf719267e1daa7ad616be997dfa7d9a3c8c4c95644f8f13.exe
1296	1a0d1982927ae271ecf719267e1daa7ad616be997dfa7d9a3c8c4c95644f8f13.exe
1296	1a0d1982927ae271ecf719267e1daa7ad616be997dfa7d9a3c8c4c95644f8f13.exe
1296	1a0d1982927ae271ecf719267e1daa7ad616be997dfa7d9a3c8c4c95644f8f13.exe
1296	1a0d1982927ae271ecf719267e1daa7ad616be997dfa7d9a3c8c4c95644f8f13.exe
1296	1a0d1982927ae271ecf719267e1daa7ad616be997dfa7d9a3c8c4c95644f8f13.exe
1296	1a0d1982927ae271ecf719267e1daa7ad616be997dfa7d9a3c8c4c95644f8f13.exe
1296	1a0d1982927ae271ecf719267e1daa7ad616be997dfa7d9a3c8c4c95644f8f13.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3872	rundll32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
1296	1a0d1982927ae271ecf719267e1daa7ad616be997dfa7d9a3c8c4c95644f8f13.exe
3872	rundll32.exe
3872	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1296 wrote to memory of 3872	1296	1a0d1982927ae271ecf719267e1daa7ad616be997dfa7d9a3c8c4c95644f8f13.exe	85
PID 1296 wrote to memory of 3872	1296	1a0d1982927ae271ecf719267e1daa7ad616be997dfa7d9a3c8c4c95644f8f13.exe	85
PID 1296 wrote to memory of 3872	1296	1a0d1982927ae271ecf719267e1daa7ad616be997dfa7d9a3c8c4c95644f8f13.exe	85

C:\Users\Admin\AppData\Local\Temp\1a0d1982927ae271ecf719267e1daa7ad616be997dfa7d9a3c8c4c95644f8f13.exe
"C:\Users\Admin\AppData\Local\Temp\1a0d1982927ae271ecf719267e1daa7ad616be997dfa7d9a3c8c4c95644f8f13.exe"
1⤵
- 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:1296
- 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:3872

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
78KB

MD5
5aa7a4bbdfaf527226cc2092bc9b249f

SHA1
c9389d70b43c21d9ef92631fa6dd3f9cbf12238c

SHA256
e11fee02e98ccad02ef9da6bec5e70e5d0157c518d7ad98e309c16f2cbfd3fc5

SHA512
6c22c94284d3f661d6c10b64ada545916dded20c1004166ceae7e703d4ac2b9659aefe0430420fb0198532a851bb9efad295c0e3f0e6da4cfbe6bd1c684aadab

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

Filesize
76KB

MD5
430e4bc4f4c11e78b67f6872fcb58916

SHA1
f9c4c6640e9c985a3785a8aaf609909ae5a27e9d

SHA256
c0c3137e83705013a00dc05af172ab6b9f34fdd1bd866ed97f161fd66a0de072

SHA512
a7597da7d07bc2abced2c771842d1475ae9fd1b0a3862d8b1919909912eca9293e3a40cdce0e9227384a9b608e27bfd7e3abf66881896fb2f0b573275d1c4974

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

Filesize
76KB

MD5
430e4bc4f4c11e78b67f6872fcb58916

SHA1
f9c4c6640e9c985a3785a8aaf609909ae5a27e9d

SHA256
c0c3137e83705013a00dc05af172ab6b9f34fdd1bd866ed97f161fd66a0de072

SHA512
a7597da7d07bc2abced2c771842d1475ae9fd1b0a3862d8b1919909912eca9293e3a40cdce0e9227384a9b608e27bfd7e3abf66881896fb2f0b573275d1c4974

Download Submit
memory/1296-0-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/1296-13-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/3872-14-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads