8b7b79653383122831264451b8b1db1ee7ec0a9a0efbb097a30107b5a236ad7d

General

Target

8b7b79653383122831264451b8b1db1ee7ec0a9a0efbb097a30107b5a236ad7d.exe
Size

76KB
MD5

6ea5f9a503ee8d481cc0d2a85a315a4c
SHA1

97981ac3f97d88b5534ed2a2ad821abca9766c62
SHA256

8b7b79653383122831264451b8b1db1ee7ec0a9a0efbb097a30107b5a236ad7d
SHA512

fcbec4938a37437b6a3bab7b6dd4f9d19b94b8252abd0d5bff8255472f64970b9c4d11dd65a8cf290113d9ecdebe4371aef65566530232c75ccc05834d0f09e4
SSDEEP

1536:RshfSWHHNvoLqNwDDGw02eQmh0HjWOqY+:GhfxHNIreQm+HiRY+

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1612	rundll32.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\" %*"	8b7b79653383122831264451b8b1db1ee7ec0a9a0efbb097a30107b5a236ad7d.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	8b7b79653383122831264451b8b1db1ee7ec0a9a0efbb097a30107b5a236ad7d.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*"	8b7b79653383122831264451b8b1db1ee7ec0a9a0efbb097a30107b5a236ad7d.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\notepad¢¬.exe	8b7b79653383122831264451b8b1db1ee7ec0a9a0efbb097a30107b5a236ad7d.exe
File created	C:\Windows\SysWOW64\notepad¢¬.exe	8b7b79653383122831264451b8b1db1ee7ec0a9a0efbb097a30107b5a236ad7d.exe
File opened for modification	C:\Windows\SysWOW64\¢«.exe	8b7b79653383122831264451b8b1db1ee7ec0a9a0efbb097a30107b5a236ad7d.exe
File created	C:\Windows\SysWOW64\¢«.exe	8b7b79653383122831264451b8b1db1ee7ec0a9a0efbb097a30107b5a236ad7d.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system\rundll32.exe	8b7b79653383122831264451b8b1db1ee7ec0a9a0efbb097a30107b5a236ad7d.exe
File created	C:\Windows\system\rundll32.exe	8b7b79653383122831264451b8b1db1ee7ec0a9a0efbb097a30107b5a236ad7d.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	8b7b79653383122831264451b8b1db1ee7ec0a9a0efbb097a30107b5a236ad7d.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe

Modifies registry class 15 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	8b7b79653383122831264451b8b1db1ee7ec0a9a0efbb097a30107b5a236ad7d.exe
Key created	\REGISTRY\MACHINE\Software\Classes\txtfile\shell\open\command	8b7b79653383122831264451b8b1db1ee7ec0a9a0efbb097a30107b5a236ad7d.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad¢¬ %1"	8b7b79653383122831264451b8b1db1ee7ec0a9a0efbb097a30107b5a236ad7d.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	8b7b79653383122831264451b8b1db1ee7ec0a9a0efbb097a30107b5a236ad7d.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainSetup = "1725814954"	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
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"	8b7b79653383122831264451b8b1db1ee7ec0a9a0efbb097a30107b5a236ad7d.exe
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	rundll32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainUp = "1725814954"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*"	8b7b79653383122831264451b8b1db1ee7ec0a9a0efbb097a30107b5a236ad7d.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	8b7b79653383122831264451b8b1db1ee7ec0a9a0efbb097a30107b5a236ad7d.exe

Suspicious behavior: EnumeratesProcesses 28 IoCs

pid	Process
1008	8b7b79653383122831264451b8b1db1ee7ec0a9a0efbb097a30107b5a236ad7d.exe
1008	8b7b79653383122831264451b8b1db1ee7ec0a9a0efbb097a30107b5a236ad7d.exe
1008	8b7b79653383122831264451b8b1db1ee7ec0a9a0efbb097a30107b5a236ad7d.exe
1008	8b7b79653383122831264451b8b1db1ee7ec0a9a0efbb097a30107b5a236ad7d.exe
1008	8b7b79653383122831264451b8b1db1ee7ec0a9a0efbb097a30107b5a236ad7d.exe
1008	8b7b79653383122831264451b8b1db1ee7ec0a9a0efbb097a30107b5a236ad7d.exe
1008	8b7b79653383122831264451b8b1db1ee7ec0a9a0efbb097a30107b5a236ad7d.exe
1008	8b7b79653383122831264451b8b1db1ee7ec0a9a0efbb097a30107b5a236ad7d.exe
1008	8b7b79653383122831264451b8b1db1ee7ec0a9a0efbb097a30107b5a236ad7d.exe
1008	8b7b79653383122831264451b8b1db1ee7ec0a9a0efbb097a30107b5a236ad7d.exe
1008	8b7b79653383122831264451b8b1db1ee7ec0a9a0efbb097a30107b5a236ad7d.exe
1008	8b7b79653383122831264451b8b1db1ee7ec0a9a0efbb097a30107b5a236ad7d.exe
1008	8b7b79653383122831264451b8b1db1ee7ec0a9a0efbb097a30107b5a236ad7d.exe
1008	8b7b79653383122831264451b8b1db1ee7ec0a9a0efbb097a30107b5a236ad7d.exe
1008	8b7b79653383122831264451b8b1db1ee7ec0a9a0efbb097a30107b5a236ad7d.exe
1008	8b7b79653383122831264451b8b1db1ee7ec0a9a0efbb097a30107b5a236ad7d.exe
1008	8b7b79653383122831264451b8b1db1ee7ec0a9a0efbb097a30107b5a236ad7d.exe
1008	8b7b79653383122831264451b8b1db1ee7ec0a9a0efbb097a30107b5a236ad7d.exe
1008	8b7b79653383122831264451b8b1db1ee7ec0a9a0efbb097a30107b5a236ad7d.exe
1008	8b7b79653383122831264451b8b1db1ee7ec0a9a0efbb097a30107b5a236ad7d.exe
1008	8b7b79653383122831264451b8b1db1ee7ec0a9a0efbb097a30107b5a236ad7d.exe
1008	8b7b79653383122831264451b8b1db1ee7ec0a9a0efbb097a30107b5a236ad7d.exe
1008	8b7b79653383122831264451b8b1db1ee7ec0a9a0efbb097a30107b5a236ad7d.exe
1008	8b7b79653383122831264451b8b1db1ee7ec0a9a0efbb097a30107b5a236ad7d.exe
1008	8b7b79653383122831264451b8b1db1ee7ec0a9a0efbb097a30107b5a236ad7d.exe
1008	8b7b79653383122831264451b8b1db1ee7ec0a9a0efbb097a30107b5a236ad7d.exe
1008	8b7b79653383122831264451b8b1db1ee7ec0a9a0efbb097a30107b5a236ad7d.exe
1008	8b7b79653383122831264451b8b1db1ee7ec0a9a0efbb097a30107b5a236ad7d.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1612	rundll32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
1008	8b7b79653383122831264451b8b1db1ee7ec0a9a0efbb097a30107b5a236ad7d.exe
1612	rundll32.exe
1612	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1008 wrote to memory of 1612	1008	8b7b79653383122831264451b8b1db1ee7ec0a9a0efbb097a30107b5a236ad7d.exe	86
PID 1008 wrote to memory of 1612	1008	8b7b79653383122831264451b8b1db1ee7ec0a9a0efbb097a30107b5a236ad7d.exe	86
PID 1008 wrote to memory of 1612	1008	8b7b79653383122831264451b8b1db1ee7ec0a9a0efbb097a30107b5a236ad7d.exe	86

C:\Users\Admin\AppData\Local\Temp\8b7b79653383122831264451b8b1db1ee7ec0a9a0efbb097a30107b5a236ad7d.exe
"C:\Users\Admin\AppData\Local\Temp\8b7b79653383122831264451b8b1db1ee7ec0a9a0efbb097a30107b5a236ad7d.exe"
1⤵
- 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:1008
- 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:1612

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

C:\Windows\SysWOW64\notepad¢¬.exe

Filesize
73KB

MD5
9fb24cbdbb316a63c8eef1c1d5b8ff44

SHA1
15e191b92b73eb37271386e4588164b515a62e91

SHA256
a02a7a8355a2012aace7778457a46b9f52377780979d8ed8dccc5d9ca36bcc87

SHA512
79388b8e0043a5560ae49e22342c10ef3c1a42456dcf854311051f745622b0e4d66b03bda9e8c9e128aed0eae486cd51b472af56fdf31ad232cddf5bff1c1ffb

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

Filesize
80KB

MD5
76d54f000e2d0f70810f0a898bd9b313

SHA1
8a014736e3410c94098d2551957369c45eba4018

SHA256
289a47fbe8ba87dab1e1aaa3699f9318d36e4bda2808bef9d76d5e8f4cafd5c2

SHA512
ca37e699d959b608a041ad54a52382c38d08df1904ace9e1a6410abb9a8d245055c7744500d431d2c4ccb729bd08a6f51860385206c8be2e2d87341f6b22ddb5

Download Submit
memory/1008-0-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/1008-13-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/1612-14-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads