381ccfb890b1dbf60da3f3c8c837c7f5e37e4711d8609feb404dc2316623feac

General

Target

381ccfb890b1dbf60da3f3c8c837c7f5e37e4711d8609feb404dc2316623feac.exe
Size

78KB
MD5

4e0e06bf5106df9509df7eec0a468e9f
SHA1

2ed435d867fdff1a75d351c46dcf49eefbe568a5
SHA256

381ccfb890b1dbf60da3f3c8c837c7f5e37e4711d8609feb404dc2316623feac
SHA512

810220fa443cc3ce03974c915a9aa228463a45f6fad7dbf794d6ae5cefdcfdf1641896f90f93e23eeaea8ad705edecb74df439a3daf34f9f373406eac8ae3409
SSDEEP

1536:RshfSWHHNvoLqNwDDGw02eQmh0HjWOtjR96:GhfxHNIreQm+HiGjR96

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
3068	rundll32.exe

Loads dropped DLL 2 IoCs

pid	Process
848	381ccfb890b1dbf60da3f3c8c837c7f5e37e4711d8609feb404dc2316623feac.exe
848	381ccfb890b1dbf60da3f3c8c837c7f5e37e4711d8609feb404dc2316623feac.exe

Modifies system executable filetype association 2 TTPs 5 IoCs

persistence

Modify Registry

T1112

Change Default File Association

T1546.001

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	rundll32.exe
Key created	\REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command	381ccfb890b1dbf60da3f3c8c837c7f5e37e4711d8609feb404dc2316623feac.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*"	381ccfb890b1dbf60da3f3c8c837c7f5e37e4711d8609feb404dc2316623feac.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	381ccfb890b1dbf60da3f3c8c837c7f5e37e4711d8609feb404dc2316623feac.exe
Key created	\REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command	rundll32.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\¢«.exe	381ccfb890b1dbf60da3f3c8c837c7f5e37e4711d8609feb404dc2316623feac.exe
File created	C:\Windows\SysWOW64\¢«.exe	381ccfb890b1dbf60da3f3c8c837c7f5e37e4711d8609feb404dc2316623feac.exe
File opened for modification	C:\Windows\SysWOW64\notepad¢¬.exe	381ccfb890b1dbf60da3f3c8c837c7f5e37e4711d8609feb404dc2316623feac.exe
File created	C:\Windows\SysWOW64\notepad¢¬.exe	381ccfb890b1dbf60da3f3c8c837c7f5e37e4711d8609feb404dc2316623feac.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system\rundll32.exe	381ccfb890b1dbf60da3f3c8c837c7f5e37e4711d8609feb404dc2316623feac.exe
File created	C:\Windows\system\rundll32.exe	381ccfb890b1dbf60da3f3c8c837c7f5e37e4711d8609feb404dc2316623feac.exe

Modifies registry class 15 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	381ccfb890b1dbf60da3f3c8c837c7f5e37e4711d8609feb404dc2316623feac.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad¢¬ %1"	381ccfb890b1dbf60da3f3c8c837c7f5e37e4711d8609feb404dc2316623feac.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainUp = "1697182700"	rundll32.exe
Key created	\REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command	rundll32.exe
Key created	\REGISTRY\MACHINE\Software\Classes\txtfile\shell\open\command	rundll32.exe
Key created	\REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command	381ccfb890b1dbf60da3f3c8c837c7f5e37e4711d8609feb404dc2316623feac.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad.exe %1"	381ccfb890b1dbf60da3f3c8c837c7f5e37e4711d8609feb404dc2316623feac.exe
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	rundll32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainSetup = "1697182700"	rundll32.exe
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	381ccfb890b1dbf60da3f3c8c837c7f5e37e4711d8609feb404dc2316623feac.exe
Key created	\REGISTRY\MACHINE\Software\Classes\txtfile\shell\open\command	381ccfb890b1dbf60da3f3c8c837c7f5e37e4711d8609feb404dc2316623feac.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
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\" %*"	381ccfb890b1dbf60da3f3c8c837c7f5e37e4711d8609feb404dc2316623feac.exe

Suspicious behavior: EnumeratesProcesses 14 IoCs

pid	Process
848	381ccfb890b1dbf60da3f3c8c837c7f5e37e4711d8609feb404dc2316623feac.exe
848	381ccfb890b1dbf60da3f3c8c837c7f5e37e4711d8609feb404dc2316623feac.exe
848	381ccfb890b1dbf60da3f3c8c837c7f5e37e4711d8609feb404dc2316623feac.exe
848	381ccfb890b1dbf60da3f3c8c837c7f5e37e4711d8609feb404dc2316623feac.exe
848	381ccfb890b1dbf60da3f3c8c837c7f5e37e4711d8609feb404dc2316623feac.exe
848	381ccfb890b1dbf60da3f3c8c837c7f5e37e4711d8609feb404dc2316623feac.exe
848	381ccfb890b1dbf60da3f3c8c837c7f5e37e4711d8609feb404dc2316623feac.exe
848	381ccfb890b1dbf60da3f3c8c837c7f5e37e4711d8609feb404dc2316623feac.exe
848	381ccfb890b1dbf60da3f3c8c837c7f5e37e4711d8609feb404dc2316623feac.exe
848	381ccfb890b1dbf60da3f3c8c837c7f5e37e4711d8609feb404dc2316623feac.exe
848	381ccfb890b1dbf60da3f3c8c837c7f5e37e4711d8609feb404dc2316623feac.exe
848	381ccfb890b1dbf60da3f3c8c837c7f5e37e4711d8609feb404dc2316623feac.exe
848	381ccfb890b1dbf60da3f3c8c837c7f5e37e4711d8609feb404dc2316623feac.exe
848	381ccfb890b1dbf60da3f3c8c837c7f5e37e4711d8609feb404dc2316623feac.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3068	rundll32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
848	381ccfb890b1dbf60da3f3c8c837c7f5e37e4711d8609feb404dc2316623feac.exe
3068	rundll32.exe
3068	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 848 wrote to memory of 3068	848	381ccfb890b1dbf60da3f3c8c837c7f5e37e4711d8609feb404dc2316623feac.exe	28
PID 848 wrote to memory of 3068	848	381ccfb890b1dbf60da3f3c8c837c7f5e37e4711d8609feb404dc2316623feac.exe	28
PID 848 wrote to memory of 3068	848	381ccfb890b1dbf60da3f3c8c837c7f5e37e4711d8609feb404dc2316623feac.exe	28
PID 848 wrote to memory of 3068	848	381ccfb890b1dbf60da3f3c8c837c7f5e37e4711d8609feb404dc2316623feac.exe	28
PID 848 wrote to memory of 3068	848	381ccfb890b1dbf60da3f3c8c837c7f5e37e4711d8609feb404dc2316623feac.exe	28
PID 848 wrote to memory of 3068	848	381ccfb890b1dbf60da3f3c8c837c7f5e37e4711d8609feb404dc2316623feac.exe	28
PID 848 wrote to memory of 3068	848	381ccfb890b1dbf60da3f3c8c837c7f5e37e4711d8609feb404dc2316623feac.exe	28

C:\Users\Admin\AppData\Local\Temp\381ccfb890b1dbf60da3f3c8c837c7f5e37e4711d8609feb404dc2316623feac.exe
"C:\Users\Admin\AppData\Local\Temp\381ccfb890b1dbf60da3f3c8c837c7f5e37e4711d8609feb404dc2316623feac.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:848
- 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:3068

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
81KB

MD5
986d01902bfa2c1040528b69e75116db

SHA1
f0d62faab630dc9d49db3a11dda74f0673051702

SHA256
f10095545f244ab0da7a9a4854c5a56a6082492a7a6ec7c5ec111f9f96792165

SHA512
2652f1e4ee8030859eec761e9254703551cdc295de4c0e89c9064c3d2effaebe0c9dc1417175ff0c1c40e8451c50b3fa342478d0c288df01451c29748a184500

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

Filesize
79KB

MD5
45b386b1b9f2bc7f0cd2ca21d159ba24

SHA1
0bbccb665dc257128ce8773c8d8076a71be4308a

SHA256
6f29ed4f80ab62bd73811b9f6ba7e4ec1c5b463f357506cd40abfea6898008cb

SHA512
ed79047072a3bddd1ee96874cb8d323a69886dae3d698ea829880c2e87c5f9e7c21553e909039e0945c794bc3af0e7405d11c4e683ee2d7da4448c35711fc849

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

Filesize
79KB

MD5
45b386b1b9f2bc7f0cd2ca21d159ba24

SHA1
0bbccb665dc257128ce8773c8d8076a71be4308a

SHA256
6f29ed4f80ab62bd73811b9f6ba7e4ec1c5b463f357506cd40abfea6898008cb

SHA512
ed79047072a3bddd1ee96874cb8d323a69886dae3d698ea829880c2e87c5f9e7c21553e909039e0945c794bc3af0e7405d11c4e683ee2d7da4448c35711fc849

Download Submit
\Windows\system\rundll32.exe

Filesize
79KB

MD5
45b386b1b9f2bc7f0cd2ca21d159ba24

SHA1
0bbccb665dc257128ce8773c8d8076a71be4308a

SHA256
6f29ed4f80ab62bd73811b9f6ba7e4ec1c5b463f357506cd40abfea6898008cb

SHA512
ed79047072a3bddd1ee96874cb8d323a69886dae3d698ea829880c2e87c5f9e7c21553e909039e0945c794bc3af0e7405d11c4e683ee2d7da4448c35711fc849

Download Submit
\Windows\system\rundll32.exe

Filesize
79KB

MD5
45b386b1b9f2bc7f0cd2ca21d159ba24

SHA1
0bbccb665dc257128ce8773c8d8076a71be4308a

SHA256
6f29ed4f80ab62bd73811b9f6ba7e4ec1c5b463f357506cd40abfea6898008cb

SHA512
ed79047072a3bddd1ee96874cb8d323a69886dae3d698ea829880c2e87c5f9e7c21553e909039e0945c794bc3af0e7405d11c4e683ee2d7da4448c35711fc849

Download Submit
memory/848-0-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/848-12-0x00000000003C0000-0x00000000003D6000-memory.dmp

Filesize
88KB

Download
memory/848-17-0x00000000003C0000-0x00000000003D6000-memory.dmp

Filesize
88KB

Download
memory/848-21-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/848-22-0x00000000003C0000-0x00000000003C6000-memory.dmp

Filesize
24KB

Download
memory/3068-20-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/3068-23-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads