a3a988df661670aabe916829162318250a0d2a0914955769fcdf5953f1411228

General

Target

a3a988df661670aabe916829162318250a0d2a0914955769fcdf5953f1411228.exe
Size

80KB
MD5

6683dda10dfbbf865ab5a17f4371ad13
SHA1

6b5a29e9347d70d9554d7b42799179278e882940
SHA256

a3a988df661670aabe916829162318250a0d2a0914955769fcdf5953f1411228
SHA512

df7006f2f18a9a23144c21c1d6ba09bd828b64868f2a9dffa157afb2134b0fcc23d41bbd86b85e53a7fec4a5d2387f8fbdc52d63872dcdd45f6755a4f06e4b3a
SSDEEP

1536:RshfSWHHNvoLqNwDDGw02eQmh0HjWOPIDo2:GhfxHNIreQm+HiUIDo2

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1980	rundll32.exe

Loads dropped DLL 2 IoCs

pid	Process
3024	a3a988df661670aabe916829162318250a0d2a0914955769fcdf5953f1411228.exe
3024	a3a988df661670aabe916829162318250a0d2a0914955769fcdf5953f1411228.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	a3a988df661670aabe916829162318250a0d2a0914955769fcdf5953f1411228.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*"	a3a988df661670aabe916829162318250a0d2a0914955769fcdf5953f1411228.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	a3a988df661670aabe916829162318250a0d2a0914955769fcdf5953f1411228.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	a3a988df661670aabe916829162318250a0d2a0914955769fcdf5953f1411228.exe
File created	C:\Windows\SysWOW64\¢«.exe	a3a988df661670aabe916829162318250a0d2a0914955769fcdf5953f1411228.exe
File opened for modification	C:\Windows\SysWOW64\notepad¢¬.exe	a3a988df661670aabe916829162318250a0d2a0914955769fcdf5953f1411228.exe
File created	C:\Windows\SysWOW64\notepad¢¬.exe	a3a988df661670aabe916829162318250a0d2a0914955769fcdf5953f1411228.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system\rundll32.exe	a3a988df661670aabe916829162318250a0d2a0914955769fcdf5953f1411228.exe
File created	C:\Windows\system\rundll32.exe	a3a988df661670aabe916829162318250a0d2a0914955769fcdf5953f1411228.exe

Modifies registry class 15 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	a3a988df661670aabe916829162318250a0d2a0914955769fcdf5953f1411228.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad.exe %1"	a3a988df661670aabe916829162318250a0d2a0914955769fcdf5953f1411228.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	a3a988df661670aabe916829162318250a0d2a0914955769fcdf5953f1411228.exe
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	rundll32.exe
Key created	\REGISTRY\MACHINE\Software\Classes\txtfile\shell\open\command	a3a988df661670aabe916829162318250a0d2a0914955769fcdf5953f1411228.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad¢¬ %1"	a3a988df661670aabe916829162318250a0d2a0914955769fcdf5953f1411228.exe
Key created	\REGISTRY\MACHINE\Software\Classes\txtfile\shell\open\command	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
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\exefile\shell\open\command	a3a988df661670aabe916829162318250a0d2a0914955769fcdf5953f1411228.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*"	a3a988df661670aabe916829162318250a0d2a0914955769fcdf5953f1411228.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainSetup = "1697046953"	rundll32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainUp = "1697046953"	rundll32.exe

Suspicious behavior: EnumeratesProcesses 14 IoCs

pid	Process
3024	a3a988df661670aabe916829162318250a0d2a0914955769fcdf5953f1411228.exe
3024	a3a988df661670aabe916829162318250a0d2a0914955769fcdf5953f1411228.exe
3024	a3a988df661670aabe916829162318250a0d2a0914955769fcdf5953f1411228.exe
3024	a3a988df661670aabe916829162318250a0d2a0914955769fcdf5953f1411228.exe
3024	a3a988df661670aabe916829162318250a0d2a0914955769fcdf5953f1411228.exe
3024	a3a988df661670aabe916829162318250a0d2a0914955769fcdf5953f1411228.exe
3024	a3a988df661670aabe916829162318250a0d2a0914955769fcdf5953f1411228.exe
3024	a3a988df661670aabe916829162318250a0d2a0914955769fcdf5953f1411228.exe
3024	a3a988df661670aabe916829162318250a0d2a0914955769fcdf5953f1411228.exe
3024	a3a988df661670aabe916829162318250a0d2a0914955769fcdf5953f1411228.exe
3024	a3a988df661670aabe916829162318250a0d2a0914955769fcdf5953f1411228.exe
3024	a3a988df661670aabe916829162318250a0d2a0914955769fcdf5953f1411228.exe
3024	a3a988df661670aabe916829162318250a0d2a0914955769fcdf5953f1411228.exe
3024	a3a988df661670aabe916829162318250a0d2a0914955769fcdf5953f1411228.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1980	rundll32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
3024	a3a988df661670aabe916829162318250a0d2a0914955769fcdf5953f1411228.exe
1980	rundll32.exe
1980	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 3024 wrote to memory of 1980	3024	a3a988df661670aabe916829162318250a0d2a0914955769fcdf5953f1411228.exe	28
PID 3024 wrote to memory of 1980	3024	a3a988df661670aabe916829162318250a0d2a0914955769fcdf5953f1411228.exe	28
PID 3024 wrote to memory of 1980	3024	a3a988df661670aabe916829162318250a0d2a0914955769fcdf5953f1411228.exe	28
PID 3024 wrote to memory of 1980	3024	a3a988df661670aabe916829162318250a0d2a0914955769fcdf5953f1411228.exe	28
PID 3024 wrote to memory of 1980	3024	a3a988df661670aabe916829162318250a0d2a0914955769fcdf5953f1411228.exe	28
PID 3024 wrote to memory of 1980	3024	a3a988df661670aabe916829162318250a0d2a0914955769fcdf5953f1411228.exe	28
PID 3024 wrote to memory of 1980	3024	a3a988df661670aabe916829162318250a0d2a0914955769fcdf5953f1411228.exe	28

C:\Users\Admin\AppData\Local\Temp\a3a988df661670aabe916829162318250a0d2a0914955769fcdf5953f1411228.exe
"C:\Users\Admin\AppData\Local\Temp\a3a988df661670aabe916829162318250a0d2a0914955769fcdf5953f1411228.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:3024
- 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:1980

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
85KB

MD5
fd01e531ac1b5eb0c7da092699654259

SHA1
010ec5459d83c994be92d6975790283370c9e113

SHA256
f71df6873324cc525940f9cd91b2df8354493943d4e359dfc10b968619c18327

SHA512
2ef9846f811a9711126850b4cd14745990a120c94c6e9d7a277857b652c9b5cf93c15464d15af007df257a200b42330f54711265f4d6238b8294179d6bed9095

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

Filesize
85KB

MD5
07d3c3d24d9b57ba904568ab1cb4cb3e

SHA1
964264690bb2a764c00494c4b5c72945f4a2d09d

SHA256
5c9c1c13d8316ff9b5f5855337736a9d4b1e8e966a2610f1e3009978863a5a46

SHA512
cfb8b25b16240c95334162f7e8c1fe92f7c705102a915f601ef912b0eba857a2bc08480b3249a89c9ac7d10b38adaca0fcaf923c2088a2bbbc612118bc1b8512

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

Filesize
85KB

MD5
07d3c3d24d9b57ba904568ab1cb4cb3e

SHA1
964264690bb2a764c00494c4b5c72945f4a2d09d

SHA256
5c9c1c13d8316ff9b5f5855337736a9d4b1e8e966a2610f1e3009978863a5a46

SHA512
cfb8b25b16240c95334162f7e8c1fe92f7c705102a915f601ef912b0eba857a2bc08480b3249a89c9ac7d10b38adaca0fcaf923c2088a2bbbc612118bc1b8512

Download Submit
\Windows\system\rundll32.exe

Filesize
85KB

MD5
07d3c3d24d9b57ba904568ab1cb4cb3e

SHA1
964264690bb2a764c00494c4b5c72945f4a2d09d

SHA256
5c9c1c13d8316ff9b5f5855337736a9d4b1e8e966a2610f1e3009978863a5a46

SHA512
cfb8b25b16240c95334162f7e8c1fe92f7c705102a915f601ef912b0eba857a2bc08480b3249a89c9ac7d10b38adaca0fcaf923c2088a2bbbc612118bc1b8512

Download Submit
\Windows\system\rundll32.exe

Filesize
85KB

MD5
07d3c3d24d9b57ba904568ab1cb4cb3e

SHA1
964264690bb2a764c00494c4b5c72945f4a2d09d

SHA256
5c9c1c13d8316ff9b5f5855337736a9d4b1e8e966a2610f1e3009978863a5a46

SHA512
cfb8b25b16240c95334162f7e8c1fe92f7c705102a915f601ef912b0eba857a2bc08480b3249a89c9ac7d10b38adaca0fcaf923c2088a2bbbc612118bc1b8512

Download Submit
memory/1980-20-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/1980-23-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/3024-0-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/3024-12-0x00000000002C0000-0x00000000002D6000-memory.dmp

Filesize
88KB

Download
memory/3024-18-0x00000000002C0000-0x00000000002D6000-memory.dmp

Filesize
88KB

Download
memory/3024-21-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/3024-22-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads