633790397a4511aafe87bd0d8b49119fe85782d1b049b90674d1a52cbefe5fc4

General

Target

633790397a4511aafe87bd0d8b49119fe85782d1b049b90674d1a52cbefe5fc4.exe
Size

79KB
MD5

cfdd248fe07bb5d6daa7ae2ba0470a65
SHA1

e86063575c6f7a76ca4daf022d2a5fb3f7d7dc9e
SHA256

633790397a4511aafe87bd0d8b49119fe85782d1b049b90674d1a52cbefe5fc4
SHA512

f227b6713f76880b73cdb59a2b6c0efe84cb758fd7e5c1a94e6e1d067b644cdad125e3b162f304ab762c86ef85cc45c8b3309413e83c45da86d1da971eccd756
SSDEEP

1536:RshfSWHHNvoLqNwDDGw02eQmh0HjWOwUtmS9:GhfxHNIreQm+HiDUtmS9

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
3956	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	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	633790397a4511aafe87bd0d8b49119fe85782d1b049b90674d1a52cbefe5fc4.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*"	633790397a4511aafe87bd0d8b49119fe85782d1b049b90674d1a52cbefe5fc4.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	633790397a4511aafe87bd0d8b49119fe85782d1b049b90674d1a52cbefe5fc4.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\¢«.exe	633790397a4511aafe87bd0d8b49119fe85782d1b049b90674d1a52cbefe5fc4.exe
File created	C:\Windows\SysWOW64\¢«.exe	633790397a4511aafe87bd0d8b49119fe85782d1b049b90674d1a52cbefe5fc4.exe
File opened for modification	C:\Windows\SysWOW64\notepad¢¬.exe	633790397a4511aafe87bd0d8b49119fe85782d1b049b90674d1a52cbefe5fc4.exe
File created	C:\Windows\SysWOW64\notepad¢¬.exe	633790397a4511aafe87bd0d8b49119fe85782d1b049b90674d1a52cbefe5fc4.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\system\rundll32.exe	633790397a4511aafe87bd0d8b49119fe85782d1b049b90674d1a52cbefe5fc4.exe
File opened for modification	C:\Windows\system\rundll32.exe	633790397a4511aafe87bd0d8b49119fe85782d1b049b90674d1a52cbefe5fc4.exe

Modifies registry class 15 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad.exe %1"	633790397a4511aafe87bd0d8b49119fe85782d1b049b90674d1a52cbefe5fc4.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	633790397a4511aafe87bd0d8b49119fe85782d1b049b90674d1a52cbefe5fc4.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad¢¬ %1"	633790397a4511aafe87bd0d8b49119fe85782d1b049b90674d1a52cbefe5fc4.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainUp = "1716579176"	rundll32.exe
Key created	\REGISTRY\MACHINE\Software\Classes\txtfile\shell\open\command	633790397a4511aafe87bd0d8b49119fe85782d1b049b90674d1a52cbefe5fc4.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainSetup = "1716579176"	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\MSipv	633790397a4511aafe87bd0d8b49119fe85782d1b049b90674d1a52cbefe5fc4.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*"	633790397a4511aafe87bd0d8b49119fe85782d1b049b90674d1a52cbefe5fc4.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainVer = "506"	rundll32.exe
Key created	\REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command	633790397a4511aafe87bd0d8b49119fe85782d1b049b90674d1a52cbefe5fc4.exe
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	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

Suspicious behavior: EnumeratesProcesses 28 IoCs

pid	Process
4692	633790397a4511aafe87bd0d8b49119fe85782d1b049b90674d1a52cbefe5fc4.exe
4692	633790397a4511aafe87bd0d8b49119fe85782d1b049b90674d1a52cbefe5fc4.exe
4692	633790397a4511aafe87bd0d8b49119fe85782d1b049b90674d1a52cbefe5fc4.exe
4692	633790397a4511aafe87bd0d8b49119fe85782d1b049b90674d1a52cbefe5fc4.exe
4692	633790397a4511aafe87bd0d8b49119fe85782d1b049b90674d1a52cbefe5fc4.exe
4692	633790397a4511aafe87bd0d8b49119fe85782d1b049b90674d1a52cbefe5fc4.exe
4692	633790397a4511aafe87bd0d8b49119fe85782d1b049b90674d1a52cbefe5fc4.exe
4692	633790397a4511aafe87bd0d8b49119fe85782d1b049b90674d1a52cbefe5fc4.exe
4692	633790397a4511aafe87bd0d8b49119fe85782d1b049b90674d1a52cbefe5fc4.exe
4692	633790397a4511aafe87bd0d8b49119fe85782d1b049b90674d1a52cbefe5fc4.exe
4692	633790397a4511aafe87bd0d8b49119fe85782d1b049b90674d1a52cbefe5fc4.exe
4692	633790397a4511aafe87bd0d8b49119fe85782d1b049b90674d1a52cbefe5fc4.exe
4692	633790397a4511aafe87bd0d8b49119fe85782d1b049b90674d1a52cbefe5fc4.exe
4692	633790397a4511aafe87bd0d8b49119fe85782d1b049b90674d1a52cbefe5fc4.exe
4692	633790397a4511aafe87bd0d8b49119fe85782d1b049b90674d1a52cbefe5fc4.exe
4692	633790397a4511aafe87bd0d8b49119fe85782d1b049b90674d1a52cbefe5fc4.exe
4692	633790397a4511aafe87bd0d8b49119fe85782d1b049b90674d1a52cbefe5fc4.exe
4692	633790397a4511aafe87bd0d8b49119fe85782d1b049b90674d1a52cbefe5fc4.exe
4692	633790397a4511aafe87bd0d8b49119fe85782d1b049b90674d1a52cbefe5fc4.exe
4692	633790397a4511aafe87bd0d8b49119fe85782d1b049b90674d1a52cbefe5fc4.exe
4692	633790397a4511aafe87bd0d8b49119fe85782d1b049b90674d1a52cbefe5fc4.exe
4692	633790397a4511aafe87bd0d8b49119fe85782d1b049b90674d1a52cbefe5fc4.exe
4692	633790397a4511aafe87bd0d8b49119fe85782d1b049b90674d1a52cbefe5fc4.exe
4692	633790397a4511aafe87bd0d8b49119fe85782d1b049b90674d1a52cbefe5fc4.exe
4692	633790397a4511aafe87bd0d8b49119fe85782d1b049b90674d1a52cbefe5fc4.exe
4692	633790397a4511aafe87bd0d8b49119fe85782d1b049b90674d1a52cbefe5fc4.exe
4692	633790397a4511aafe87bd0d8b49119fe85782d1b049b90674d1a52cbefe5fc4.exe
4692	633790397a4511aafe87bd0d8b49119fe85782d1b049b90674d1a52cbefe5fc4.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3956	rundll32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
4692	633790397a4511aafe87bd0d8b49119fe85782d1b049b90674d1a52cbefe5fc4.exe
3956	rundll32.exe
3956	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4692 wrote to memory of 3956	4692	633790397a4511aafe87bd0d8b49119fe85782d1b049b90674d1a52cbefe5fc4.exe	85
PID 4692 wrote to memory of 3956	4692	633790397a4511aafe87bd0d8b49119fe85782d1b049b90674d1a52cbefe5fc4.exe	85
PID 4692 wrote to memory of 3956	4692	633790397a4511aafe87bd0d8b49119fe85782d1b049b90674d1a52cbefe5fc4.exe	85

C:\Users\Admin\AppData\Local\Temp\633790397a4511aafe87bd0d8b49119fe85782d1b049b90674d1a52cbefe5fc4.exe
"C:\Users\Admin\AppData\Local\Temp\633790397a4511aafe87bd0d8b49119fe85782d1b049b90674d1a52cbefe5fc4.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:4692
- 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:3956

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
9bd434863bf19c1a64a29d550a74c687

SHA1
422cc179fe1a7aa2c1ee1f07dbb05dc3502f9f34

SHA256
090dc25855d0815ede62a70590358f34fc88fd403531d9153919dc9bc96a6774

SHA512
db473cf6333722ee7cc70fd5b94742da0dbc9f5d9b111af2431c8b8308a0809b88c7bda4978331d27ab606ab47ab390f1c619465b8a9d88f02f653ac5dca5bff

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

Filesize
80KB

MD5
929a3390a4ba0b2b192350831720da15

SHA1
0000e0e12c6dfc51bfe3debc62a3fc088b93df81

SHA256
c4649354f2a7dce9186578d6c1f3d73607308cc15f172c554becbbe59fa4d427

SHA512
1446d7a94f18eccac1bb55ef4fc3787f6aca323ad6861f7accf62214a2760689ee5375e467ed925cb7b434b96b72c60388f77a474fad82145ef569b10486bf94

Download Submit
memory/4692-0-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/4692-13-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads