b2a40f27de644a0a463c281792a24bbfff9bfc57f596bad9cebd6bc4eeabeceb

General

Target

b2a40f27de644a0a463c281792a24bbfff9bfc57f596bad9cebd6bc4eeabeceb.exe
Size

81KB
MD5

40c746820016e968f8457d60aa63632a
SHA1

bd59435f4b44c95a577d2b8a60de22ced3b86ada
SHA256

b2a40f27de644a0a463c281792a24bbfff9bfc57f596bad9cebd6bc4eeabeceb
SHA512

735a39573af74df9536614e18dbb87c7060498d5502b84ce6ec69526a1f358a26347ab957a64e1d12f1c9fdde1bfa324d125bbd7784747bf51a151140accf628
SSDEEP

1536:RshfSWHHNvoLqNwDDGw02eQmh0HjWOtxytmvj:GhfxHNIreQm+HiWxytmvj

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
3060	rundll32.exe

Loads dropped DLL 2 IoCs

pid	Process
2164	b2a40f27de644a0a463c281792a24bbfff9bfc57f596bad9cebd6bc4eeabeceb.exe
2164	b2a40f27de644a0a463c281792a24bbfff9bfc57f596bad9cebd6bc4eeabeceb.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	b2a40f27de644a0a463c281792a24bbfff9bfc57f596bad9cebd6bc4eeabeceb.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*"	b2a40f27de644a0a463c281792a24bbfff9bfc57f596bad9cebd6bc4eeabeceb.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	b2a40f27de644a0a463c281792a24bbfff9bfc57f596bad9cebd6bc4eeabeceb.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	b2a40f27de644a0a463c281792a24bbfff9bfc57f596bad9cebd6bc4eeabeceb.exe
File created	C:\Windows\SysWOW64\¢«.exe	b2a40f27de644a0a463c281792a24bbfff9bfc57f596bad9cebd6bc4eeabeceb.exe
File opened for modification	C:\Windows\SysWOW64\notepad¢¬.exe	b2a40f27de644a0a463c281792a24bbfff9bfc57f596bad9cebd6bc4eeabeceb.exe
File created	C:\Windows\SysWOW64\notepad¢¬.exe	b2a40f27de644a0a463c281792a24bbfff9bfc57f596bad9cebd6bc4eeabeceb.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system\rundll32.exe	b2a40f27de644a0a463c281792a24bbfff9bfc57f596bad9cebd6bc4eeabeceb.exe
File created	C:\Windows\system\rundll32.exe	b2a40f27de644a0a463c281792a24bbfff9bfc57f596bad9cebd6bc4eeabeceb.exe

Modifies registry class 15 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\Software\Classes\txtfile\shell\open\command	b2a40f27de644a0a463c281792a24bbfff9bfc57f596bad9cebd6bc4eeabeceb.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	b2a40f27de644a0a463c281792a24bbfff9bfc57f596bad9cebd6bc4eeabeceb.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad¢¬ %1"	b2a40f27de644a0a463c281792a24bbfff9bfc57f596bad9cebd6bc4eeabeceb.exe
Key created	\REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command	b2a40f27de644a0a463c281792a24bbfff9bfc57f596bad9cebd6bc4eeabeceb.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainVer = "506"	rundll32.exe
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad.exe %1"	b2a40f27de644a0a463c281792a24bbfff9bfc57f596bad9cebd6bc4eeabeceb.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainSetup = "1717468342"	rundll32.exe
Key created	\REGISTRY\MACHINE\Software\Classes\txtfile\shell\open\command	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad¢¬ %1"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*"	b2a40f27de644a0a463c281792a24bbfff9bfc57f596bad9cebd6bc4eeabeceb.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainUp = "1717468342"	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
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	b2a40f27de644a0a463c281792a24bbfff9bfc57f596bad9cebd6bc4eeabeceb.exe

Suspicious behavior: EnumeratesProcesses 14 IoCs

pid	Process
2164	b2a40f27de644a0a463c281792a24bbfff9bfc57f596bad9cebd6bc4eeabeceb.exe
2164	b2a40f27de644a0a463c281792a24bbfff9bfc57f596bad9cebd6bc4eeabeceb.exe
2164	b2a40f27de644a0a463c281792a24bbfff9bfc57f596bad9cebd6bc4eeabeceb.exe
2164	b2a40f27de644a0a463c281792a24bbfff9bfc57f596bad9cebd6bc4eeabeceb.exe
2164	b2a40f27de644a0a463c281792a24bbfff9bfc57f596bad9cebd6bc4eeabeceb.exe
2164	b2a40f27de644a0a463c281792a24bbfff9bfc57f596bad9cebd6bc4eeabeceb.exe
2164	b2a40f27de644a0a463c281792a24bbfff9bfc57f596bad9cebd6bc4eeabeceb.exe
2164	b2a40f27de644a0a463c281792a24bbfff9bfc57f596bad9cebd6bc4eeabeceb.exe
2164	b2a40f27de644a0a463c281792a24bbfff9bfc57f596bad9cebd6bc4eeabeceb.exe
2164	b2a40f27de644a0a463c281792a24bbfff9bfc57f596bad9cebd6bc4eeabeceb.exe
2164	b2a40f27de644a0a463c281792a24bbfff9bfc57f596bad9cebd6bc4eeabeceb.exe
2164	b2a40f27de644a0a463c281792a24bbfff9bfc57f596bad9cebd6bc4eeabeceb.exe
2164	b2a40f27de644a0a463c281792a24bbfff9bfc57f596bad9cebd6bc4eeabeceb.exe
2164	b2a40f27de644a0a463c281792a24bbfff9bfc57f596bad9cebd6bc4eeabeceb.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3060	rundll32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
2164	b2a40f27de644a0a463c281792a24bbfff9bfc57f596bad9cebd6bc4eeabeceb.exe
3060	rundll32.exe
3060	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2164 wrote to memory of 3060	2164	b2a40f27de644a0a463c281792a24bbfff9bfc57f596bad9cebd6bc4eeabeceb.exe	28
PID 2164 wrote to memory of 3060	2164	b2a40f27de644a0a463c281792a24bbfff9bfc57f596bad9cebd6bc4eeabeceb.exe	28
PID 2164 wrote to memory of 3060	2164	b2a40f27de644a0a463c281792a24bbfff9bfc57f596bad9cebd6bc4eeabeceb.exe	28
PID 2164 wrote to memory of 3060	2164	b2a40f27de644a0a463c281792a24bbfff9bfc57f596bad9cebd6bc4eeabeceb.exe	28
PID 2164 wrote to memory of 3060	2164	b2a40f27de644a0a463c281792a24bbfff9bfc57f596bad9cebd6bc4eeabeceb.exe	28
PID 2164 wrote to memory of 3060	2164	b2a40f27de644a0a463c281792a24bbfff9bfc57f596bad9cebd6bc4eeabeceb.exe	28
PID 2164 wrote to memory of 3060	2164	b2a40f27de644a0a463c281792a24bbfff9bfc57f596bad9cebd6bc4eeabeceb.exe	28

C:\Users\Admin\AppData\Local\Temp\b2a40f27de644a0a463c281792a24bbfff9bfc57f596bad9cebd6bc4eeabeceb.exe
"C:\Users\Admin\AppData\Local\Temp\b2a40f27de644a0a463c281792a24bbfff9bfc57f596bad9cebd6bc4eeabeceb.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:2164
- 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:3060

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
77KB

MD5
f7a71810efd1faf6d97c9ab19b900ce8

SHA1
0013254a0731d02992b0f19199abb11e8747564e

SHA256
cb38b8e11eb29d3b61371249d3c8a9506b9cc9df51015ab3ccda8c4b0a094b58

SHA512
e75a6636f0459177df5f10f61acbf06b2f3b360b3d0ec4d4c12992a913b389c9fffb537485e2b64dd4fab2de37057325d88669de056f3a66400098ab8341e210

Download Submit
\Windows\system\rundll32.exe

Filesize
78KB

MD5
2f42aa36fc6e452994a6f4d9ebd66870

SHA1
4f39671ea18ed6ccf5eed83c23f80350551d02ab

SHA256
44cf2afc0f311a850351985af73a1494928de643f0cbf5171fcdfbf781578c3d

SHA512
8a11b61fae0f1c0996d47fbc91b8dadd93b5eb587b5084c375c1edc779e4b5551a47d2a31e88e0e8e4b6ff3d7ceda632c4483c00c6dddbaf07dbafeaaa009811

Download Submit
memory/2164-0-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/2164-17-0x00000000003A0000-0x00000000003B6000-memory.dmp

Filesize
88KB

Download
memory/2164-16-0x00000000003A0000-0x00000000003B6000-memory.dmp

Filesize
88KB

Download
memory/2164-20-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/2164-21-0x00000000003A0000-0x00000000003A2000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads