0c99b8c9d74abcbc7d5914055f34656bf20b8e76a3079ec3006e3bcc20618b14

General

Target

0c99b8c9d74abcbc7d5914055f34656bf20b8e76a3079ec3006e3bcc20618b14.exe
Size

84KB
MD5

56e307adec814c43eecbc8f2efcec038
SHA1

c0cef3c35367dc4c1dfde7f167d2d28eaef39e7c
SHA256

0c99b8c9d74abcbc7d5914055f34656bf20b8e76a3079ec3006e3bcc20618b14
SHA512

fa5707f4120de5d73044966cb71ff4d1f5e84be941db1cb5f502d124fd25195092cd7c1417b6ae5ccddb261263263b7bc105d84f288b4a6c0cd02122497429d1
SSDEEP

1536:RshfSWHHNvoLqNwDDGw02eQmh0HjWOw0SH010P9:GhfxHNIreQm+Hi70SH010P9

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2168	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	0c99b8c9d74abcbc7d5914055f34656bf20b8e76a3079ec3006e3bcc20618b14.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*"	0c99b8c9d74abcbc7d5914055f34656bf20b8e76a3079ec3006e3bcc20618b14.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	0c99b8c9d74abcbc7d5914055f34656bf20b8e76a3079ec3006e3bcc20618b14.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	0c99b8c9d74abcbc7d5914055f34656bf20b8e76a3079ec3006e3bcc20618b14.exe
File created	C:\Windows\SysWOW64\¢«.exe	0c99b8c9d74abcbc7d5914055f34656bf20b8e76a3079ec3006e3bcc20618b14.exe
File opened for modification	C:\Windows\SysWOW64\notepad¢¬.exe	0c99b8c9d74abcbc7d5914055f34656bf20b8e76a3079ec3006e3bcc20618b14.exe
File created	C:\Windows\SysWOW64\notepad¢¬.exe	0c99b8c9d74abcbc7d5914055f34656bf20b8e76a3079ec3006e3bcc20618b14.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system\rundll32.exe	0c99b8c9d74abcbc7d5914055f34656bf20b8e76a3079ec3006e3bcc20618b14.exe
File created	C:\Windows\system\rundll32.exe	0c99b8c9d74abcbc7d5914055f34656bf20b8e76a3079ec3006e3bcc20618b14.exe

Modifies registry class 15 IoCs

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainUp = "1693542668"	rundll32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainVer = "506"	rundll32.exe
Key created	\REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command	rundll32.exe
Key created	\REGISTRY\MACHINE\Software\Classes\txtfile\shell\open\command	0c99b8c9d74abcbc7d5914055f34656bf20b8e76a3079ec3006e3bcc20618b14.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad.exe %1"	0c99b8c9d74abcbc7d5914055f34656bf20b8e76a3079ec3006e3bcc20618b14.exe
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	rundll32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainSetup = "1693542668"	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
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	0c99b8c9d74abcbc7d5914055f34656bf20b8e76a3079ec3006e3bcc20618b14.exe
Key created	\REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command	0c99b8c9d74abcbc7d5914055f34656bf20b8e76a3079ec3006e3bcc20618b14.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*"	0c99b8c9d74abcbc7d5914055f34656bf20b8e76a3079ec3006e3bcc20618b14.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	0c99b8c9d74abcbc7d5914055f34656bf20b8e76a3079ec3006e3bcc20618b14.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad¢¬ %1"	0c99b8c9d74abcbc7d5914055f34656bf20b8e76a3079ec3006e3bcc20618b14.exe
Key created	\REGISTRY\MACHINE\Software\Classes\txtfile\shell\open\command	rundll32.exe

Suspicious behavior: EnumeratesProcesses 28 IoCs

pid	Process
3532	0c99b8c9d74abcbc7d5914055f34656bf20b8e76a3079ec3006e3bcc20618b14.exe
3532	0c99b8c9d74abcbc7d5914055f34656bf20b8e76a3079ec3006e3bcc20618b14.exe
3532	0c99b8c9d74abcbc7d5914055f34656bf20b8e76a3079ec3006e3bcc20618b14.exe
3532	0c99b8c9d74abcbc7d5914055f34656bf20b8e76a3079ec3006e3bcc20618b14.exe
3532	0c99b8c9d74abcbc7d5914055f34656bf20b8e76a3079ec3006e3bcc20618b14.exe
3532	0c99b8c9d74abcbc7d5914055f34656bf20b8e76a3079ec3006e3bcc20618b14.exe
3532	0c99b8c9d74abcbc7d5914055f34656bf20b8e76a3079ec3006e3bcc20618b14.exe
3532	0c99b8c9d74abcbc7d5914055f34656bf20b8e76a3079ec3006e3bcc20618b14.exe
3532	0c99b8c9d74abcbc7d5914055f34656bf20b8e76a3079ec3006e3bcc20618b14.exe
3532	0c99b8c9d74abcbc7d5914055f34656bf20b8e76a3079ec3006e3bcc20618b14.exe
3532	0c99b8c9d74abcbc7d5914055f34656bf20b8e76a3079ec3006e3bcc20618b14.exe
3532	0c99b8c9d74abcbc7d5914055f34656bf20b8e76a3079ec3006e3bcc20618b14.exe
3532	0c99b8c9d74abcbc7d5914055f34656bf20b8e76a3079ec3006e3bcc20618b14.exe
3532	0c99b8c9d74abcbc7d5914055f34656bf20b8e76a3079ec3006e3bcc20618b14.exe
3532	0c99b8c9d74abcbc7d5914055f34656bf20b8e76a3079ec3006e3bcc20618b14.exe
3532	0c99b8c9d74abcbc7d5914055f34656bf20b8e76a3079ec3006e3bcc20618b14.exe
3532	0c99b8c9d74abcbc7d5914055f34656bf20b8e76a3079ec3006e3bcc20618b14.exe
3532	0c99b8c9d74abcbc7d5914055f34656bf20b8e76a3079ec3006e3bcc20618b14.exe
3532	0c99b8c9d74abcbc7d5914055f34656bf20b8e76a3079ec3006e3bcc20618b14.exe
3532	0c99b8c9d74abcbc7d5914055f34656bf20b8e76a3079ec3006e3bcc20618b14.exe
3532	0c99b8c9d74abcbc7d5914055f34656bf20b8e76a3079ec3006e3bcc20618b14.exe
3532	0c99b8c9d74abcbc7d5914055f34656bf20b8e76a3079ec3006e3bcc20618b14.exe
3532	0c99b8c9d74abcbc7d5914055f34656bf20b8e76a3079ec3006e3bcc20618b14.exe
3532	0c99b8c9d74abcbc7d5914055f34656bf20b8e76a3079ec3006e3bcc20618b14.exe
3532	0c99b8c9d74abcbc7d5914055f34656bf20b8e76a3079ec3006e3bcc20618b14.exe
3532	0c99b8c9d74abcbc7d5914055f34656bf20b8e76a3079ec3006e3bcc20618b14.exe
3532	0c99b8c9d74abcbc7d5914055f34656bf20b8e76a3079ec3006e3bcc20618b14.exe
3532	0c99b8c9d74abcbc7d5914055f34656bf20b8e76a3079ec3006e3bcc20618b14.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2168	rundll32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
3532	0c99b8c9d74abcbc7d5914055f34656bf20b8e76a3079ec3006e3bcc20618b14.exe
2168	rundll32.exe
2168	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3532 wrote to memory of 2168	3532	0c99b8c9d74abcbc7d5914055f34656bf20b8e76a3079ec3006e3bcc20618b14.exe	82
PID 3532 wrote to memory of 2168	3532	0c99b8c9d74abcbc7d5914055f34656bf20b8e76a3079ec3006e3bcc20618b14.exe	82
PID 3532 wrote to memory of 2168	3532	0c99b8c9d74abcbc7d5914055f34656bf20b8e76a3079ec3006e3bcc20618b14.exe	82

C:\Users\Admin\AppData\Local\Temp\0c99b8c9d74abcbc7d5914055f34656bf20b8e76a3079ec3006e3bcc20618b14.exe
"C:\Users\Admin\AppData\Local\Temp\0c99b8c9d74abcbc7d5914055f34656bf20b8e76a3079ec3006e3bcc20618b14.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:3532
- 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:2168

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
75KB

MD5
97c39f34d2af1653f8742aa834084012

SHA1
1e401bae0961eb2c92851a89c6f0d63263ed4da7

SHA256
5ae40d6cf376facef1533257443e9ef44eb2c7ea15e439d7aa573d7e76437a30

SHA512
5b0b9aa518a0bea595bab636f46f44972daf4a099241bf69e1abb36cdb6d4e93601ac8050908160dbcd036158f8883a257aaeaf1cc50e203a2f43b7586dddd49

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

Filesize
79KB

MD5
0d57c4d4db6b9f6bbbde93bd16e4cd3f

SHA1
7713dfad138c645a060e775b29e3d0bbdeaf53ce

SHA256
cc1e7c25afd1c5869164f8993152fae0b0a4b90be120dc75eeaa5d0e2d87e169

SHA512
48f4b404db1f5ed48a80ac5ebd9b37d80b878ddac7d86195816b952e8f285903def0d8b3c28707ad8604f1cd5bbc63220b8bbc749ae647e1673d87e2fd7df1f0

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

Filesize
79KB

MD5
0d57c4d4db6b9f6bbbde93bd16e4cd3f

SHA1
7713dfad138c645a060e775b29e3d0bbdeaf53ce

SHA256
cc1e7c25afd1c5869164f8993152fae0b0a4b90be120dc75eeaa5d0e2d87e169

SHA512
48f4b404db1f5ed48a80ac5ebd9b37d80b878ddac7d86195816b952e8f285903def0d8b3c28707ad8604f1cd5bbc63220b8bbc749ae647e1673d87e2fd7df1f0

Download Submit
memory/2168-14-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/3532-0-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/3532-13-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads