91d026ae60c3b2e1441765950c33f4a1d0d17addc1b53dc778f3cab215032c5f

General

Target

91d026ae60c3b2e1441765950c33f4a1d0d17addc1b53dc778f3cab215032c5f.exe
Size

76KB
MD5

cc73e7318e81ab0a4949fc9a3be04550
SHA1

a01f2cb5edecd78e8383116871302d2d7e91d6f1
SHA256

91d026ae60c3b2e1441765950c33f4a1d0d17addc1b53dc778f3cab215032c5f
SHA512

41e8c3a9482c5459f1d599ec94f7e7eff8df3e7f809899080bca54da7d76ec916a1e890528a58655d81d149a73712c119282734d7246dea3f644746b2899249c
SSDEEP

1536:RshfSWHHNvoLqNwDDGw02eQmh0HjWOfWe:GhfxHNIreQm+HiIWe

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
4364	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	91d026ae60c3b2e1441765950c33f4a1d0d17addc1b53dc778f3cab215032c5f.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*"	91d026ae60c3b2e1441765950c33f4a1d0d17addc1b53dc778f3cab215032c5f.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	91d026ae60c3b2e1441765950c33f4a1d0d17addc1b53dc778f3cab215032c5f.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 created	C:\Windows\SysWOW64\¢«.exe	91d026ae60c3b2e1441765950c33f4a1d0d17addc1b53dc778f3cab215032c5f.exe
File opened for modification	C:\Windows\SysWOW64\notepad¢¬.exe	91d026ae60c3b2e1441765950c33f4a1d0d17addc1b53dc778f3cab215032c5f.exe
File created	C:\Windows\SysWOW64\notepad¢¬.exe	91d026ae60c3b2e1441765950c33f4a1d0d17addc1b53dc778f3cab215032c5f.exe
File opened for modification	C:\Windows\SysWOW64\¢«.exe	91d026ae60c3b2e1441765950c33f4a1d0d17addc1b53dc778f3cab215032c5f.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\system\rundll32.exe	91d026ae60c3b2e1441765950c33f4a1d0d17addc1b53dc778f3cab215032c5f.exe
File opened for modification	C:\Windows\system\rundll32.exe	91d026ae60c3b2e1441765950c33f4a1d0d17addc1b53dc778f3cab215032c5f.exe

Modifies registry class 15 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad.exe %1"	91d026ae60c3b2e1441765950c33f4a1d0d17addc1b53dc778f3cab215032c5f.exe
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	rundll32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainSetup = "1695223771"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad¢¬ %1"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad¢¬ %1"	91d026ae60c3b2e1441765950c33f4a1d0d17addc1b53dc778f3cab215032c5f.exe
Key created	\REGISTRY\MACHINE\Software\Classes\txtfile\shell\open\command	rundll32.exe
Key created	\REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command	91d026ae60c3b2e1441765950c33f4a1d0d17addc1b53dc778f3cab215032c5f.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*"	91d026ae60c3b2e1441765950c33f4a1d0d17addc1b53dc778f3cab215032c5f.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainUp = "1695223771"	rundll32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainVer = "506"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	rundll32.exe
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	91d026ae60c3b2e1441765950c33f4a1d0d17addc1b53dc778f3cab215032c5f.exe
Key created	\REGISTRY\MACHINE\Software\Classes\txtfile\shell\open\command	91d026ae60c3b2e1441765950c33f4a1d0d17addc1b53dc778f3cab215032c5f.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	91d026ae60c3b2e1441765950c33f4a1d0d17addc1b53dc778f3cab215032c5f.exe
Key created	\REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command	rundll32.exe

Suspicious behavior: EnumeratesProcesses 28 IoCs

pid	Process
5000	91d026ae60c3b2e1441765950c33f4a1d0d17addc1b53dc778f3cab215032c5f.exe
5000	91d026ae60c3b2e1441765950c33f4a1d0d17addc1b53dc778f3cab215032c5f.exe
5000	91d026ae60c3b2e1441765950c33f4a1d0d17addc1b53dc778f3cab215032c5f.exe
5000	91d026ae60c3b2e1441765950c33f4a1d0d17addc1b53dc778f3cab215032c5f.exe
5000	91d026ae60c3b2e1441765950c33f4a1d0d17addc1b53dc778f3cab215032c5f.exe
5000	91d026ae60c3b2e1441765950c33f4a1d0d17addc1b53dc778f3cab215032c5f.exe
5000	91d026ae60c3b2e1441765950c33f4a1d0d17addc1b53dc778f3cab215032c5f.exe
5000	91d026ae60c3b2e1441765950c33f4a1d0d17addc1b53dc778f3cab215032c5f.exe
5000	91d026ae60c3b2e1441765950c33f4a1d0d17addc1b53dc778f3cab215032c5f.exe
5000	91d026ae60c3b2e1441765950c33f4a1d0d17addc1b53dc778f3cab215032c5f.exe
5000	91d026ae60c3b2e1441765950c33f4a1d0d17addc1b53dc778f3cab215032c5f.exe
5000	91d026ae60c3b2e1441765950c33f4a1d0d17addc1b53dc778f3cab215032c5f.exe
5000	91d026ae60c3b2e1441765950c33f4a1d0d17addc1b53dc778f3cab215032c5f.exe
5000	91d026ae60c3b2e1441765950c33f4a1d0d17addc1b53dc778f3cab215032c5f.exe
5000	91d026ae60c3b2e1441765950c33f4a1d0d17addc1b53dc778f3cab215032c5f.exe
5000	91d026ae60c3b2e1441765950c33f4a1d0d17addc1b53dc778f3cab215032c5f.exe
5000	91d026ae60c3b2e1441765950c33f4a1d0d17addc1b53dc778f3cab215032c5f.exe
5000	91d026ae60c3b2e1441765950c33f4a1d0d17addc1b53dc778f3cab215032c5f.exe
5000	91d026ae60c3b2e1441765950c33f4a1d0d17addc1b53dc778f3cab215032c5f.exe
5000	91d026ae60c3b2e1441765950c33f4a1d0d17addc1b53dc778f3cab215032c5f.exe
5000	91d026ae60c3b2e1441765950c33f4a1d0d17addc1b53dc778f3cab215032c5f.exe
5000	91d026ae60c3b2e1441765950c33f4a1d0d17addc1b53dc778f3cab215032c5f.exe
5000	91d026ae60c3b2e1441765950c33f4a1d0d17addc1b53dc778f3cab215032c5f.exe
5000	91d026ae60c3b2e1441765950c33f4a1d0d17addc1b53dc778f3cab215032c5f.exe
5000	91d026ae60c3b2e1441765950c33f4a1d0d17addc1b53dc778f3cab215032c5f.exe
5000	91d026ae60c3b2e1441765950c33f4a1d0d17addc1b53dc778f3cab215032c5f.exe
5000	91d026ae60c3b2e1441765950c33f4a1d0d17addc1b53dc778f3cab215032c5f.exe
5000	91d026ae60c3b2e1441765950c33f4a1d0d17addc1b53dc778f3cab215032c5f.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
4364	rundll32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
5000	91d026ae60c3b2e1441765950c33f4a1d0d17addc1b53dc778f3cab215032c5f.exe
4364	rundll32.exe
4364	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 5000 wrote to memory of 4364	5000	91d026ae60c3b2e1441765950c33f4a1d0d17addc1b53dc778f3cab215032c5f.exe	85
PID 5000 wrote to memory of 4364	5000	91d026ae60c3b2e1441765950c33f4a1d0d17addc1b53dc778f3cab215032c5f.exe	85
PID 5000 wrote to memory of 4364	5000	91d026ae60c3b2e1441765950c33f4a1d0d17addc1b53dc778f3cab215032c5f.exe	85

C:\Users\Admin\AppData\Local\Temp\91d026ae60c3b2e1441765950c33f4a1d0d17addc1b53dc778f3cab215032c5f.exe
"C:\Users\Admin\AppData\Local\Temp\91d026ae60c3b2e1441765950c33f4a1d0d17addc1b53dc778f3cab215032c5f.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:5000
- 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:4364

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
8a1112412e796ac8315f5ec64644e5aa

SHA1
fa55b2c3db0686476e1b8f7dd421d1074aa85a48

SHA256
89dc912fecdfff504280d30473b5cc79c7a27dac36223928e6cc2e1105e49c7c

SHA512
ba679cd2d6e58a9215d4b9bdd9ac5750a28c3f3fc7948737c3f0920d5c99dc46a1e92bccd4797a68961e09adbfa0c42293f20f02e5f439758969d5c0abf2a23c

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

Filesize
77KB

MD5
aa2b5d0480b1fe4888e57e32f185a9fc

SHA1
666c7c187226ac3c0cbb2d8de78431eee39650db

SHA256
9694554086d2fb53510f16a0e15bc00e24148f97e270e4ec4c295c0ec7c930a9

SHA512
7f2284171c107a22dfa47e0cd818c61938513cacef50d854281166b00e6efd019fe6c5712a9b70b0954957337c430b01bf612d542f7435e89a5fcec086aa7a4d

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

Filesize
77KB

MD5
aa2b5d0480b1fe4888e57e32f185a9fc

SHA1
666c7c187226ac3c0cbb2d8de78431eee39650db

SHA256
9694554086d2fb53510f16a0e15bc00e24148f97e270e4ec4c295c0ec7c930a9

SHA512
7f2284171c107a22dfa47e0cd818c61938513cacef50d854281166b00e6efd019fe6c5712a9b70b0954957337c430b01bf612d542f7435e89a5fcec086aa7a4d

Download Submit
memory/4364-14-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/5000-0-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/5000-13-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads