fc38e751ed3a0812f868868a2b274a37818014c1d9f5db1a8d27c8e8c5dce832

General

Target

fc38e751ed3a0812f868868a2b274a37818014c1d9f5db1a8d27c8e8c5dce832.exe
Size

80KB
MD5

ae75fec135157bda2b3d6ab83f730287
SHA1

23605d82bd1351cd85b602ce86365584a175dd42
SHA256

fc38e751ed3a0812f868868a2b274a37818014c1d9f5db1a8d27c8e8c5dce832
SHA512

2fae9e929e887718dbdff559ad13d35c5d4d8b59c178d192ed94a8e53a07579f9b1e53567b47bdad7ccf3cc9f2b1849cf1cdaa57221167f1db2fcd1667e3e70b
SSDEEP

1536:RshfSWHHNvoLqNwDDGw02eQmh0HjWOjB+86wG:GhfxHNIreQm+HiKB+86wG

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2612	rundll32.exe

Loads dropped DLL 2 IoCs

pid	Process
2212	fc38e751ed3a0812f868868a2b274a37818014c1d9f5db1a8d27c8e8c5dce832.exe
2212	fc38e751ed3a0812f868868a2b274a37818014c1d9f5db1a8d27c8e8c5dce832.exe

Modifies system executable filetype association 2 TTPs 5 IoCs

persistence

Modify Registry

T1112

Change Default File Association

T1546.001

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	fc38e751ed3a0812f868868a2b274a37818014c1d9f5db1a8d27c8e8c5dce832.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\exefile\shell\open\command	fc38e751ed3a0812f868868a2b274a37818014c1d9f5db1a8d27c8e8c5dce832.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*"	fc38e751ed3a0812f868868a2b274a37818014c1d9f5db1a8d27c8e8c5dce832.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\notepad¢¬.exe	fc38e751ed3a0812f868868a2b274a37818014c1d9f5db1a8d27c8e8c5dce832.exe
File created	C:\Windows\SysWOW64\notepad¢¬.exe	fc38e751ed3a0812f868868a2b274a37818014c1d9f5db1a8d27c8e8c5dce832.exe
File opened for modification	C:\Windows\SysWOW64\¢«.exe	fc38e751ed3a0812f868868a2b274a37818014c1d9f5db1a8d27c8e8c5dce832.exe
File created	C:\Windows\SysWOW64\¢«.exe	fc38e751ed3a0812f868868a2b274a37818014c1d9f5db1a8d27c8e8c5dce832.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system\rundll32.exe	fc38e751ed3a0812f868868a2b274a37818014c1d9f5db1a8d27c8e8c5dce832.exe
File created	C:\Windows\system\rundll32.exe	fc38e751ed3a0812f868868a2b274a37818014c1d9f5db1a8d27c8e8c5dce832.exe

Modifies registry class 15 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad¢¬ %1"	fc38e751ed3a0812f868868a2b274a37818014c1d9f5db1a8d27c8e8c5dce832.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainSetup = "1697113785"	rundll32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainUp = "1697113785"	rundll32.exe
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	rundll32.exe
Key created	\REGISTRY\MACHINE\Software\Classes\txtfile\shell\open\command	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	fc38e751ed3a0812f868868a2b274a37818014c1d9f5db1a8d27c8e8c5dce832.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¢¬ %1"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*"	fc38e751ed3a0812f868868a2b274a37818014c1d9f5db1a8d27c8e8c5dce832.exe
Key created	\REGISTRY\MACHINE\Software\Classes\txtfile\shell\open\command	fc38e751ed3a0812f868868a2b274a37818014c1d9f5db1a8d27c8e8c5dce832.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad.exe %1"	fc38e751ed3a0812f868868a2b274a37818014c1d9f5db1a8d27c8e8c5dce832.exe
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	fc38e751ed3a0812f868868a2b274a37818014c1d9f5db1a8d27c8e8c5dce832.exe
Key created	\REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command	fc38e751ed3a0812f868868a2b274a37818014c1d9f5db1a8d27c8e8c5dce832.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	rundll32.exe

Suspicious behavior: EnumeratesProcesses 14 IoCs

pid	Process
2212	fc38e751ed3a0812f868868a2b274a37818014c1d9f5db1a8d27c8e8c5dce832.exe
2212	fc38e751ed3a0812f868868a2b274a37818014c1d9f5db1a8d27c8e8c5dce832.exe
2212	fc38e751ed3a0812f868868a2b274a37818014c1d9f5db1a8d27c8e8c5dce832.exe
2212	fc38e751ed3a0812f868868a2b274a37818014c1d9f5db1a8d27c8e8c5dce832.exe
2212	fc38e751ed3a0812f868868a2b274a37818014c1d9f5db1a8d27c8e8c5dce832.exe
2212	fc38e751ed3a0812f868868a2b274a37818014c1d9f5db1a8d27c8e8c5dce832.exe
2212	fc38e751ed3a0812f868868a2b274a37818014c1d9f5db1a8d27c8e8c5dce832.exe
2212	fc38e751ed3a0812f868868a2b274a37818014c1d9f5db1a8d27c8e8c5dce832.exe
2212	fc38e751ed3a0812f868868a2b274a37818014c1d9f5db1a8d27c8e8c5dce832.exe
2212	fc38e751ed3a0812f868868a2b274a37818014c1d9f5db1a8d27c8e8c5dce832.exe
2212	fc38e751ed3a0812f868868a2b274a37818014c1d9f5db1a8d27c8e8c5dce832.exe
2212	fc38e751ed3a0812f868868a2b274a37818014c1d9f5db1a8d27c8e8c5dce832.exe
2212	fc38e751ed3a0812f868868a2b274a37818014c1d9f5db1a8d27c8e8c5dce832.exe
2212	fc38e751ed3a0812f868868a2b274a37818014c1d9f5db1a8d27c8e8c5dce832.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2612	rundll32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
2212	fc38e751ed3a0812f868868a2b274a37818014c1d9f5db1a8d27c8e8c5dce832.exe
2612	rundll32.exe
2612	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2212 wrote to memory of 2612	2212	fc38e751ed3a0812f868868a2b274a37818014c1d9f5db1a8d27c8e8c5dce832.exe	28
PID 2212 wrote to memory of 2612	2212	fc38e751ed3a0812f868868a2b274a37818014c1d9f5db1a8d27c8e8c5dce832.exe	28
PID 2212 wrote to memory of 2612	2212	fc38e751ed3a0812f868868a2b274a37818014c1d9f5db1a8d27c8e8c5dce832.exe	28
PID 2212 wrote to memory of 2612	2212	fc38e751ed3a0812f868868a2b274a37818014c1d9f5db1a8d27c8e8c5dce832.exe	28
PID 2212 wrote to memory of 2612	2212	fc38e751ed3a0812f868868a2b274a37818014c1d9f5db1a8d27c8e8c5dce832.exe	28
PID 2212 wrote to memory of 2612	2212	fc38e751ed3a0812f868868a2b274a37818014c1d9f5db1a8d27c8e8c5dce832.exe	28
PID 2212 wrote to memory of 2612	2212	fc38e751ed3a0812f868868a2b274a37818014c1d9f5db1a8d27c8e8c5dce832.exe	28

C:\Users\Admin\AppData\Local\Temp\fc38e751ed3a0812f868868a2b274a37818014c1d9f5db1a8d27c8e8c5dce832.exe
"C:\Users\Admin\AppData\Local\Temp\fc38e751ed3a0812f868868a2b274a37818014c1d9f5db1a8d27c8e8c5dce832.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:2212
- 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:2612

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

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Downloads

C:\Windows\SysWOW64\notepad¢¬.exe

Filesize
81KB

MD5
b8ff24149f236bcd514f559e8a8a13b3

SHA1
aca6c388c6b8bb3402df0909afbb4fda7b69d07c

SHA256
0df9cd1dcaae908d97894a107800cc22bf585ada32ab7d2d53b60ebf09ca9eca

SHA512
be408a103cf508a8568004eed67e0e3478fcc61add19ad925a17d8ea2b5d11ea5abe9cc13d0c318d47ec1558129c3c431afa49a568145bebe40887749c9282f9

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

Filesize
76KB

MD5
cc199f05f3742d45549f2100424597c7

SHA1
2be34ce61c8e1d35ec14b329f6f1c2ff52d41648

SHA256
e95020e4e621dbe251f797edb3223ffb46c9d627499c6a2cac6e9315a4b53deb

SHA512
432167a6969fcac38f710110896e92103f2b0f2a4b1ef095b6d5cc3f19252c7aa153ad99719f4199698ef28a70070ae11c866ba67c6b2f1b3dea0e35add491f8

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

Filesize
76KB

MD5
cc199f05f3742d45549f2100424597c7

SHA1
2be34ce61c8e1d35ec14b329f6f1c2ff52d41648

SHA256
e95020e4e621dbe251f797edb3223ffb46c9d627499c6a2cac6e9315a4b53deb

SHA512
432167a6969fcac38f710110896e92103f2b0f2a4b1ef095b6d5cc3f19252c7aa153ad99719f4199698ef28a70070ae11c866ba67c6b2f1b3dea0e35add491f8

Download Submit
\Windows\system\rundll32.exe

Filesize
76KB

MD5
cc199f05f3742d45549f2100424597c7

SHA1
2be34ce61c8e1d35ec14b329f6f1c2ff52d41648

SHA256
e95020e4e621dbe251f797edb3223ffb46c9d627499c6a2cac6e9315a4b53deb

SHA512
432167a6969fcac38f710110896e92103f2b0f2a4b1ef095b6d5cc3f19252c7aa153ad99719f4199698ef28a70070ae11c866ba67c6b2f1b3dea0e35add491f8

Download Submit
\Windows\system\rundll32.exe

Filesize
76KB

MD5
cc199f05f3742d45549f2100424597c7

SHA1
2be34ce61c8e1d35ec14b329f6f1c2ff52d41648

SHA256
e95020e4e621dbe251f797edb3223ffb46c9d627499c6a2cac6e9315a4b53deb

SHA512
432167a6969fcac38f710110896e92103f2b0f2a4b1ef095b6d5cc3f19252c7aa153ad99719f4199698ef28a70070ae11c866ba67c6b2f1b3dea0e35add491f8

Download Submit
memory/2212-0-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/2212-12-0x00000000002C0000-0x00000000002D6000-memory.dmp

Filesize
88KB

Download
memory/2212-21-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2212-20-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/2612-19-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/2612-22-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads