79d44037a239950ca0b2bb8e58611b32233039cdb01369e0a1f81d12df69d7a3

General

Target

NEAS.6addf06d3376886553adcd3a084ed910.exe
Size

317KB
MD5

6addf06d3376886553adcd3a084ed910
SHA1

9daf15b01e1f01609963472e4e70b93a66c7b0d3
SHA256

79d44037a239950ca0b2bb8e58611b32233039cdb01369e0a1f81d12df69d7a3
SHA512

f4588fb888361ce3dff2ad928ae501dee3eef83d9c0fdbba7e389d4d20cbe1b1e968de67fdc2504339eb8c9c59aa57433358f4aa108bdd7b4517a007fc3944eb
SSDEEP

768:5BBdFYDgao5/AUrLEEzayTpBJfxBDlxkFNXK8D1Foji:5pcC/eAayJ3Rx8T

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
3120	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	NEAS.6addf06d3376886553adcd3a084ed910.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*"	NEAS.6addf06d3376886553adcd3a084ed910.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	NEAS.6addf06d3376886553adcd3a084ed910.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\¢«.exe	NEAS.6addf06d3376886553adcd3a084ed910.exe
File created	C:\Windows\SysWOW64\notepad¢¬.exe	NEAS.6addf06d3376886553adcd3a084ed910.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\Windows\system\rundll32.exe	NEAS.6addf06d3376886553adcd3a084ed910.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3968	3120	WerFault.exe	88

Modifies registry class 15 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	rundll32.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\" %*"	NEAS.6addf06d3376886553adcd3a084ed910.exe
Key created	\REGISTRY\MACHINE\Software\Classes\txtfile\shell\open\command	NEAS.6addf06d3376886553adcd3a084ed910.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad.exe %1"	NEAS.6addf06d3376886553adcd3a084ed910.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad¢¬ %1"	NEAS.6addf06d3376886553adcd3a084ed910.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainSetup = "1697346890"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	rundll32.exe
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	NEAS.6addf06d3376886553adcd3a084ed910.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainUp = "1697346890"	rundll32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainVer = "505"	rundll32.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	NEAS.6addf06d3376886553adcd3a084ed910.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	NEAS.6addf06d3376886553adcd3a084ed910.exe
Key created	\REGISTRY\MACHINE\Software\Classes\txtfile\shell\open\command	rundll32.exe

Suspicious behavior: EnumeratesProcesses 28 IoCs

pid	Process
4776	NEAS.6addf06d3376886553adcd3a084ed910.exe
4776	NEAS.6addf06d3376886553adcd3a084ed910.exe
4776	NEAS.6addf06d3376886553adcd3a084ed910.exe
4776	NEAS.6addf06d3376886553adcd3a084ed910.exe
4776	NEAS.6addf06d3376886553adcd3a084ed910.exe
4776	NEAS.6addf06d3376886553adcd3a084ed910.exe
4776	NEAS.6addf06d3376886553adcd3a084ed910.exe
4776	NEAS.6addf06d3376886553adcd3a084ed910.exe
4776	NEAS.6addf06d3376886553adcd3a084ed910.exe
4776	NEAS.6addf06d3376886553adcd3a084ed910.exe
4776	NEAS.6addf06d3376886553adcd3a084ed910.exe
4776	NEAS.6addf06d3376886553adcd3a084ed910.exe
4776	NEAS.6addf06d3376886553adcd3a084ed910.exe
4776	NEAS.6addf06d3376886553adcd3a084ed910.exe
4776	NEAS.6addf06d3376886553adcd3a084ed910.exe
4776	NEAS.6addf06d3376886553adcd3a084ed910.exe
4776	NEAS.6addf06d3376886553adcd3a084ed910.exe
4776	NEAS.6addf06d3376886553adcd3a084ed910.exe
4776	NEAS.6addf06d3376886553adcd3a084ed910.exe
4776	NEAS.6addf06d3376886553adcd3a084ed910.exe
4776	NEAS.6addf06d3376886553adcd3a084ed910.exe
4776	NEAS.6addf06d3376886553adcd3a084ed910.exe
4776	NEAS.6addf06d3376886553adcd3a084ed910.exe
4776	NEAS.6addf06d3376886553adcd3a084ed910.exe
4776	NEAS.6addf06d3376886553adcd3a084ed910.exe
4776	NEAS.6addf06d3376886553adcd3a084ed910.exe
4776	NEAS.6addf06d3376886553adcd3a084ed910.exe
4776	NEAS.6addf06d3376886553adcd3a084ed910.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
4776	NEAS.6addf06d3376886553adcd3a084ed910.exe
3120	rundll32.exe
3120	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4776 wrote to memory of 3120	4776	NEAS.6addf06d3376886553adcd3a084ed910.exe	88
PID 4776 wrote to memory of 3120	4776	NEAS.6addf06d3376886553adcd3a084ed910.exe	88
PID 4776 wrote to memory of 3120	4776	NEAS.6addf06d3376886553adcd3a084ed910.exe	88

C:\Users\Admin\AppData\Local\Temp\NEAS.6addf06d3376886553adcd3a084ed910.exe
"C:\Users\Admin\AppData\Local\Temp\NEAS.6addf06d3376886553adcd3a084ed910.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:4776
- C:\Windows\system\rundll32.exe
  C:\Windows\system\rundll32.exe
  2⤵
  - Executes dropped EXE
  - Modifies system executable filetype association
  - Modifies registry class
  - Suspicious use of SetWindowsHookEx
  PID:3120
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 3120 -s 608
    3⤵
    - Program crash
    PID:3968

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 472 -p 3120 -ip 3120
1⤵
PID:3004

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\System\rundll32.exe

Filesize
346KB

MD5
3c2d841fef51a016c4d7fbbb16c30589

SHA1
47f198f6e03771cdc8861fa811a7ed70d3350a19

SHA256
145ecbf067c9cd026d054d12e199c4982a87bc0265b4fbf8f044e17ef75e4fa7

SHA512
4de72aab222c9d5ad5f2958d7e667d4bd790ce66139d59e2d334793576b2d2c169484dd813f7dc77d47510324b5b5cf935fd8a1b51beddc3f06752fd098f037f

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

Filesize
346KB

MD5
3c2d841fef51a016c4d7fbbb16c30589

SHA1
47f198f6e03771cdc8861fa811a7ed70d3350a19

SHA256
145ecbf067c9cd026d054d12e199c4982a87bc0265b4fbf8f044e17ef75e4fa7

SHA512
4de72aab222c9d5ad5f2958d7e667d4bd790ce66139d59e2d334793576b2d2c169484dd813f7dc77d47510324b5b5cf935fd8a1b51beddc3f06752fd098f037f

Download Submit
memory/3120-8-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3120-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4776-0-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4776-1-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4776-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads