1723ff59b968969d2693e425108bdb1bfa04c88249fc5a30d58404a96dc75a82

General

Target

1723ff59b968969d2693e425108bdb1bfa04c88249fc5a30d58404a96dc75a82.exe
Size

645KB
MD5

8782f3cdb57dd3509a4794eba3493e73
SHA1

2715631be47484dcda80b5ea754d506d1a62e95a
SHA256

1723ff59b968969d2693e425108bdb1bfa04c88249fc5a30d58404a96dc75a82
SHA512

1190058137cedd26f3358109dcc4837f26c37139031f61c8e43ae4aaf26903f5ffc5549a470b7c64af19ea97a59cbdcf5c98a5318f99cc2ccd3ccebbecb6ed2a
SSDEEP

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

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2664	rundll32.exe

Loads dropped DLL 2 IoCs

pid	Process
2972	1723ff59b968969d2693e425108bdb1bfa04c88249fc5a30d58404a96dc75a82.exe
2972	1723ff59b968969d2693e425108bdb1bfa04c88249fc5a30d58404a96dc75a82.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	1723ff59b968969d2693e425108bdb1bfa04c88249fc5a30d58404a96dc75a82.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*"	1723ff59b968969d2693e425108bdb1bfa04c88249fc5a30d58404a96dc75a82.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	1723ff59b968969d2693e425108bdb1bfa04c88249fc5a30d58404a96dc75a82.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 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\¢«.exe	1723ff59b968969d2693e425108bdb1bfa04c88249fc5a30d58404a96dc75a82.exe
File created	C:\Windows\SysWOW64\notepad¢¬.exe	1723ff59b968969d2693e425108bdb1bfa04c88249fc5a30d58404a96dc75a82.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\Windows\system\rundll32.exe	1723ff59b968969d2693e425108bdb1bfa04c88249fc5a30d58404a96dc75a82.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	1723ff59b968969d2693e425108bdb1bfa04c88249fc5a30d58404a96dc75a82.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\txtfile\shell\open\command\ = "notepad¢¬ %1"	1723ff59b968969d2693e425108bdb1bfa04c88249fc5a30d58404a96dc75a82.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\" %*"	1723ff59b968969d2693e425108bdb1bfa04c88249fc5a30d58404a96dc75a82.exe
Key created	\REGISTRY\MACHINE\Software\Classes\txtfile\shell\open\command	1723ff59b968969d2693e425108bdb1bfa04c88249fc5a30d58404a96dc75a82.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	1723ff59b968969d2693e425108bdb1bfa04c88249fc5a30d58404a96dc75a82.exe
Key created	\REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command	rundll32.exe
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	1723ff59b968969d2693e425108bdb1bfa04c88249fc5a30d58404a96dc75a82.exe
Key created	\REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command	1723ff59b968969d2693e425108bdb1bfa04c88249fc5a30d58404a96dc75a82.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainUp = "1727290761"	rundll32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainVer = "505"	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.exe %1"	1723ff59b968969d2693e425108bdb1bfa04c88249fc5a30d58404a96dc75a82.exe
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	rundll32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainSetup = "1727290761"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	rundll32.exe

Suspicious behavior: EnumeratesProcesses 14 IoCs

pid	Process
2972	1723ff59b968969d2693e425108bdb1bfa04c88249fc5a30d58404a96dc75a82.exe
2972	1723ff59b968969d2693e425108bdb1bfa04c88249fc5a30d58404a96dc75a82.exe
2972	1723ff59b968969d2693e425108bdb1bfa04c88249fc5a30d58404a96dc75a82.exe
2972	1723ff59b968969d2693e425108bdb1bfa04c88249fc5a30d58404a96dc75a82.exe
2972	1723ff59b968969d2693e425108bdb1bfa04c88249fc5a30d58404a96dc75a82.exe
2972	1723ff59b968969d2693e425108bdb1bfa04c88249fc5a30d58404a96dc75a82.exe
2972	1723ff59b968969d2693e425108bdb1bfa04c88249fc5a30d58404a96dc75a82.exe
2972	1723ff59b968969d2693e425108bdb1bfa04c88249fc5a30d58404a96dc75a82.exe
2972	1723ff59b968969d2693e425108bdb1bfa04c88249fc5a30d58404a96dc75a82.exe
2972	1723ff59b968969d2693e425108bdb1bfa04c88249fc5a30d58404a96dc75a82.exe
2972	1723ff59b968969d2693e425108bdb1bfa04c88249fc5a30d58404a96dc75a82.exe
2972	1723ff59b968969d2693e425108bdb1bfa04c88249fc5a30d58404a96dc75a82.exe
2972	1723ff59b968969d2693e425108bdb1bfa04c88249fc5a30d58404a96dc75a82.exe
2972	1723ff59b968969d2693e425108bdb1bfa04c88249fc5a30d58404a96dc75a82.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2664	rundll32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
2972	1723ff59b968969d2693e425108bdb1bfa04c88249fc5a30d58404a96dc75a82.exe
2664	rundll32.exe
2664	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2972 wrote to memory of 2664	2972	1723ff59b968969d2693e425108bdb1bfa04c88249fc5a30d58404a96dc75a82.exe	30
PID 2972 wrote to memory of 2664	2972	1723ff59b968969d2693e425108bdb1bfa04c88249fc5a30d58404a96dc75a82.exe	30
PID 2972 wrote to memory of 2664	2972	1723ff59b968969d2693e425108bdb1bfa04c88249fc5a30d58404a96dc75a82.exe	30
PID 2972 wrote to memory of 2664	2972	1723ff59b968969d2693e425108bdb1bfa04c88249fc5a30d58404a96dc75a82.exe	30
PID 2972 wrote to memory of 2664	2972	1723ff59b968969d2693e425108bdb1bfa04c88249fc5a30d58404a96dc75a82.exe	30
PID 2972 wrote to memory of 2664	2972	1723ff59b968969d2693e425108bdb1bfa04c88249fc5a30d58404a96dc75a82.exe	30
PID 2972 wrote to memory of 2664	2972	1723ff59b968969d2693e425108bdb1bfa04c88249fc5a30d58404a96dc75a82.exe	30

C:\Users\Admin\AppData\Local\Temp\1723ff59b968969d2693e425108bdb1bfa04c88249fc5a30d58404a96dc75a82.exe
"C:\Users\Admin\AppData\Local\Temp\1723ff59b968969d2693e425108bdb1bfa04c88249fc5a30d58404a96dc75a82.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:2972
- 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:2664

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
665KB

MD5
e1cc83e004ca4b353fe53f0abf09e063

SHA1
436decf2af63de07d8ac8a298298a5f13b9a1724

SHA256
b92e8387b608b51f578ecd5d9f6c687e0b069c7d7fc917c998f761747078ca99

SHA512
26815aad80a33c51262b08216b379bdd1d1116b3f1c74c6e28fd55420d124412affd6bfc7fe3f3f7d18034601c494fc4ac3c13ee316a757d0333f2798cfdbdde

Download Submit
memory/2664-15-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2972-0-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2972-10-0x0000000000260000-0x0000000000275000-memory.dmp

Filesize
84KB

Download
memory/2972-13-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2972-14-0x0000000000260000-0x0000000000262000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads