1a011f0a4d8aa5ad5c3b7c09305db93c6f5d382fe3c80bcce8d5ca92ee87c54e

General

Target

1a011f0a4d8aa5ad5c3b7c09305db93c6f5d382fe3c80bcce8d5ca92ee87c54eN.exe
Size

809KB
MD5

932367707a58f2d485b059753c450330
SHA1

1c2c11879909ff7402cfd7c00392ff308fc7e7d9
SHA256

1a011f0a4d8aa5ad5c3b7c09305db93c6f5d382fe3c80bcce8d5ca92ee87c54e
SHA512

3f586a5ac3fa1708bc54fa2bc568afc8f06516bc8f8a3b79af246ce04f1639e0bb21e8e1f931a4b341e071c32009f5db8423445e4cb81f4868951577716972b0
SSDEEP

768:5BBdFYDgao5/AUrLEEzayTpBJfxBDlxcFNXK8D1Foj/:5pcC/eAayJ3Rx0g

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2836	rundll32.exe

Loads dropped DLL 2 IoCs

pid	Process
2700	1a011f0a4d8aa5ad5c3b7c09305db93c6f5d382fe3c80bcce8d5ca92ee87c54eN.exe
2700	1a011f0a4d8aa5ad5c3b7c09305db93c6f5d382fe3c80bcce8d5ca92ee87c54eN.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\" %*"	1a011f0a4d8aa5ad5c3b7c09305db93c6f5d382fe3c80bcce8d5ca92ee87c54eN.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	1a011f0a4d8aa5ad5c3b7c09305db93c6f5d382fe3c80bcce8d5ca92ee87c54eN.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\exefile\shell\open\command	1a011f0a4d8aa5ad5c3b7c09305db93c6f5d382fe3c80bcce8d5ca92ee87c54eN.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\¢«.exe	1a011f0a4d8aa5ad5c3b7c09305db93c6f5d382fe3c80bcce8d5ca92ee87c54eN.exe
File created	C:\Windows\SysWOW64\notepad¢¬.exe	1a011f0a4d8aa5ad5c3b7c09305db93c6f5d382fe3c80bcce8d5ca92ee87c54eN.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\Windows\system\rundll32.exe	1a011f0a4d8aa5ad5c3b7c09305db93c6f5d382fe3c80bcce8d5ca92ee87c54eN.exe

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	1a011f0a4d8aa5ad5c3b7c09305db93c6f5d382fe3c80bcce8d5ca92ee87c54eN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe

Modifies registry class 15 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*"	1a011f0a4d8aa5ad5c3b7c09305db93c6f5d382fe3c80bcce8d5ca92ee87c54eN.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainVer = "505"	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\MSipv	1a011f0a4d8aa5ad5c3b7c09305db93c6f5d382fe3c80bcce8d5ca92ee87c54eN.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad.exe %1"	1a011f0a4d8aa5ad5c3b7c09305db93c6f5d382fe3c80bcce8d5ca92ee87c54eN.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainUp = "1727427194"	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	1a011f0a4d8aa5ad5c3b7c09305db93c6f5d382fe3c80bcce8d5ca92ee87c54eN.exe
Key created	\REGISTRY\MACHINE\Software\Classes\txtfile\shell\open\command	1a011f0a4d8aa5ad5c3b7c09305db93c6f5d382fe3c80bcce8d5ca92ee87c54eN.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad¢¬ %1"	1a011f0a4d8aa5ad5c3b7c09305db93c6f5d382fe3c80bcce8d5ca92ee87c54eN.exe
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	1a011f0a4d8aa5ad5c3b7c09305db93c6f5d382fe3c80bcce8d5ca92ee87c54eN.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainSetup = "1727427194"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	rundll32.exe

Suspicious behavior: EnumeratesProcesses 14 IoCs

pid	Process
2700	1a011f0a4d8aa5ad5c3b7c09305db93c6f5d382fe3c80bcce8d5ca92ee87c54eN.exe
2700	1a011f0a4d8aa5ad5c3b7c09305db93c6f5d382fe3c80bcce8d5ca92ee87c54eN.exe
2700	1a011f0a4d8aa5ad5c3b7c09305db93c6f5d382fe3c80bcce8d5ca92ee87c54eN.exe
2700	1a011f0a4d8aa5ad5c3b7c09305db93c6f5d382fe3c80bcce8d5ca92ee87c54eN.exe
2700	1a011f0a4d8aa5ad5c3b7c09305db93c6f5d382fe3c80bcce8d5ca92ee87c54eN.exe
2700	1a011f0a4d8aa5ad5c3b7c09305db93c6f5d382fe3c80bcce8d5ca92ee87c54eN.exe
2700	1a011f0a4d8aa5ad5c3b7c09305db93c6f5d382fe3c80bcce8d5ca92ee87c54eN.exe
2700	1a011f0a4d8aa5ad5c3b7c09305db93c6f5d382fe3c80bcce8d5ca92ee87c54eN.exe
2700	1a011f0a4d8aa5ad5c3b7c09305db93c6f5d382fe3c80bcce8d5ca92ee87c54eN.exe
2700	1a011f0a4d8aa5ad5c3b7c09305db93c6f5d382fe3c80bcce8d5ca92ee87c54eN.exe
2700	1a011f0a4d8aa5ad5c3b7c09305db93c6f5d382fe3c80bcce8d5ca92ee87c54eN.exe
2700	1a011f0a4d8aa5ad5c3b7c09305db93c6f5d382fe3c80bcce8d5ca92ee87c54eN.exe
2700	1a011f0a4d8aa5ad5c3b7c09305db93c6f5d382fe3c80bcce8d5ca92ee87c54eN.exe
2700	1a011f0a4d8aa5ad5c3b7c09305db93c6f5d382fe3c80bcce8d5ca92ee87c54eN.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2836	rundll32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
2700	1a011f0a4d8aa5ad5c3b7c09305db93c6f5d382fe3c80bcce8d5ca92ee87c54eN.exe
2836	rundll32.exe
2836	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2700 wrote to memory of 2836	2700	1a011f0a4d8aa5ad5c3b7c09305db93c6f5d382fe3c80bcce8d5ca92ee87c54eN.exe	31
PID 2700 wrote to memory of 2836	2700	1a011f0a4d8aa5ad5c3b7c09305db93c6f5d382fe3c80bcce8d5ca92ee87c54eN.exe	31
PID 2700 wrote to memory of 2836	2700	1a011f0a4d8aa5ad5c3b7c09305db93c6f5d382fe3c80bcce8d5ca92ee87c54eN.exe	31
PID 2700 wrote to memory of 2836	2700	1a011f0a4d8aa5ad5c3b7c09305db93c6f5d382fe3c80bcce8d5ca92ee87c54eN.exe	31
PID 2700 wrote to memory of 2836	2700	1a011f0a4d8aa5ad5c3b7c09305db93c6f5d382fe3c80bcce8d5ca92ee87c54eN.exe	31
PID 2700 wrote to memory of 2836	2700	1a011f0a4d8aa5ad5c3b7c09305db93c6f5d382fe3c80bcce8d5ca92ee87c54eN.exe	31
PID 2700 wrote to memory of 2836	2700	1a011f0a4d8aa5ad5c3b7c09305db93c6f5d382fe3c80bcce8d5ca92ee87c54eN.exe	31

C:\Users\Admin\AppData\Local\Temp\1a011f0a4d8aa5ad5c3b7c09305db93c6f5d382fe3c80bcce8d5ca92ee87c54eN.exe
"C:\Users\Admin\AppData\Local\Temp\1a011f0a4d8aa5ad5c3b7c09305db93c6f5d382fe3c80bcce8d5ca92ee87c54eN.exe"
1⤵
- Loads dropped DLL
- Modifies system executable filetype association
- Drops file in System32 directory
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2700
- C:\Windows\system\rundll32.exe
  C:\Windows\system\rundll32.exe
  2⤵
  - Executes dropped EXE
  - Modifies system executable filetype association
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of SetWindowsHookEx
  PID:2836

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

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

\Windows\system\rundll32.exe

Filesize
823KB

MD5
6becc905adc89feaf38699691a2c6bab

SHA1
e19e48b08087e1feacf27768e582b016a244cb9e

SHA256
e747e7db44707b639ffc3acb54d56efc55bcb9b1f10e15b6b4299c4e9cbda482

SHA512
3ade6a20ec3f58f01041cc3d305750adc7c668ed8dfd49eb8c67f2cd6f67a612fb90ffffd30d35df16548db6a05292c57c2ad08da951d77cb28437e7ff21ee15

Download Submit
memory/2700-0-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2700-10-0x00000000002E0000-0x00000000002F5000-memory.dmp

Filesize
84KB

Download
memory/2700-14-0x00000000002E0000-0x00000000002E2000-memory.dmp

Filesize
8KB

Download
memory/2700-13-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2836-15-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads