a8bf4660bb98a585ba2f603ee258a1b4116839222578d28576fd30f8b6885df3

General

Target

a8bf4660bb98a585ba2f603ee258a1b4116839222578d28576fd30f8b6885df3.exe
Size

83KB
MD5

749594fcf8a90c0916774aba4c31551b
SHA1

686f5e43375bab27687a433ed2445abda2a944f1
SHA256

a8bf4660bb98a585ba2f603ee258a1b4116839222578d28576fd30f8b6885df3
SHA512

66ce9283b065aa1ccd62890df63f350b651fc57328b3a26d49bb7db1b57d0cfb9ffbe1ba55f8812e71d990d08b120dd95230abcd75288297a258044015c16c96
SSDEEP

1536:RshfSWHHNvoLqNwDDGw02eQmh0HjWOQvoNm:GhfxHNIreQm+HirvoNm

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2692	rundll32.exe

Loads dropped DLL 2 IoCs

pid	Process
2504	a8bf4660bb98a585ba2f603ee258a1b4116839222578d28576fd30f8b6885df3.exe
2504	a8bf4660bb98a585ba2f603ee258a1b4116839222578d28576fd30f8b6885df3.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	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	a8bf4660bb98a585ba2f603ee258a1b4116839222578d28576fd30f8b6885df3.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*"	a8bf4660bb98a585ba2f603ee258a1b4116839222578d28576fd30f8b6885df3.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	a8bf4660bb98a585ba2f603ee258a1b4116839222578d28576fd30f8b6885df3.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\notepad¢¬.exe	a8bf4660bb98a585ba2f603ee258a1b4116839222578d28576fd30f8b6885df3.exe
File created	C:\Windows\SysWOW64\notepad¢¬.exe	a8bf4660bb98a585ba2f603ee258a1b4116839222578d28576fd30f8b6885df3.exe
File opened for modification	C:\Windows\SysWOW64\¢«.exe	a8bf4660bb98a585ba2f603ee258a1b4116839222578d28576fd30f8b6885df3.exe
File created	C:\Windows\SysWOW64\¢«.exe	a8bf4660bb98a585ba2f603ee258a1b4116839222578d28576fd30f8b6885df3.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system\rundll32.exe	a8bf4660bb98a585ba2f603ee258a1b4116839222578d28576fd30f8b6885df3.exe
File created	C:\Windows\system\rundll32.exe	a8bf4660bb98a585ba2f603ee258a1b4116839222578d28576fd30f8b6885df3.exe

Modifies registry class 15 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	a8bf4660bb98a585ba2f603ee258a1b4116839222578d28576fd30f8b6885df3.exe
Key created	\REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command	a8bf4660bb98a585ba2f603ee258a1b4116839222578d28576fd30f8b6885df3.exe
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	rundll32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainUp = "1705548910"	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\" %*"	a8bf4660bb98a585ba2f603ee258a1b4116839222578d28576fd30f8b6885df3.exe
Key created	\REGISTRY\MACHINE\Software\Classes\txtfile\shell\open\command	a8bf4660bb98a585ba2f603ee258a1b4116839222578d28576fd30f8b6885df3.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad.exe %1"	a8bf4660bb98a585ba2f603ee258a1b4116839222578d28576fd30f8b6885df3.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	a8bf4660bb98a585ba2f603ee258a1b4116839222578d28576fd30f8b6885df3.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainVer = "506"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad¢¬ %1"	a8bf4660bb98a585ba2f603ee258a1b4116839222578d28576fd30f8b6885df3.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 (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainSetup = "1705548910"	rundll32.exe
Key created	\REGISTRY\MACHINE\Software\Classes\txtfile\shell\open\command	rundll32.exe

Suspicious behavior: EnumeratesProcesses 14 IoCs

pid	Process
2504	a8bf4660bb98a585ba2f603ee258a1b4116839222578d28576fd30f8b6885df3.exe
2504	a8bf4660bb98a585ba2f603ee258a1b4116839222578d28576fd30f8b6885df3.exe
2504	a8bf4660bb98a585ba2f603ee258a1b4116839222578d28576fd30f8b6885df3.exe
2504	a8bf4660bb98a585ba2f603ee258a1b4116839222578d28576fd30f8b6885df3.exe
2504	a8bf4660bb98a585ba2f603ee258a1b4116839222578d28576fd30f8b6885df3.exe
2504	a8bf4660bb98a585ba2f603ee258a1b4116839222578d28576fd30f8b6885df3.exe
2504	a8bf4660bb98a585ba2f603ee258a1b4116839222578d28576fd30f8b6885df3.exe
2504	a8bf4660bb98a585ba2f603ee258a1b4116839222578d28576fd30f8b6885df3.exe
2504	a8bf4660bb98a585ba2f603ee258a1b4116839222578d28576fd30f8b6885df3.exe
2504	a8bf4660bb98a585ba2f603ee258a1b4116839222578d28576fd30f8b6885df3.exe
2504	a8bf4660bb98a585ba2f603ee258a1b4116839222578d28576fd30f8b6885df3.exe
2504	a8bf4660bb98a585ba2f603ee258a1b4116839222578d28576fd30f8b6885df3.exe
2504	a8bf4660bb98a585ba2f603ee258a1b4116839222578d28576fd30f8b6885df3.exe
2504	a8bf4660bb98a585ba2f603ee258a1b4116839222578d28576fd30f8b6885df3.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2692	rundll32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
2504	a8bf4660bb98a585ba2f603ee258a1b4116839222578d28576fd30f8b6885df3.exe
2692	rundll32.exe
2692	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2504 wrote to memory of 2692	2504	a8bf4660bb98a585ba2f603ee258a1b4116839222578d28576fd30f8b6885df3.exe	28
PID 2504 wrote to memory of 2692	2504	a8bf4660bb98a585ba2f603ee258a1b4116839222578d28576fd30f8b6885df3.exe	28
PID 2504 wrote to memory of 2692	2504	a8bf4660bb98a585ba2f603ee258a1b4116839222578d28576fd30f8b6885df3.exe	28
PID 2504 wrote to memory of 2692	2504	a8bf4660bb98a585ba2f603ee258a1b4116839222578d28576fd30f8b6885df3.exe	28
PID 2504 wrote to memory of 2692	2504	a8bf4660bb98a585ba2f603ee258a1b4116839222578d28576fd30f8b6885df3.exe	28
PID 2504 wrote to memory of 2692	2504	a8bf4660bb98a585ba2f603ee258a1b4116839222578d28576fd30f8b6885df3.exe	28
PID 2504 wrote to memory of 2692	2504	a8bf4660bb98a585ba2f603ee258a1b4116839222578d28576fd30f8b6885df3.exe	28

C:\Users\Admin\AppData\Local\Temp\a8bf4660bb98a585ba2f603ee258a1b4116839222578d28576fd30f8b6885df3.exe
"C:\Users\Admin\AppData\Local\Temp\a8bf4660bb98a585ba2f603ee258a1b4116839222578d28576fd30f8b6885df3.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:2504
- 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:2692

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

Replay Monitor

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Downloads

C:\Windows\SysWOW64\notepad¢¬.exe

Filesize
74KB

MD5
08634bdddf9b45f58a7a8b9c7a88d713

SHA1
4afb4e19611ebc20ab7f1751f677bb82f84c5917

SHA256
33400f6ebdcddfb9974542a23b259e2e4301e7ab19c3647ee83c08b1a4393e03

SHA512
c2cf7ad534620da36f03342add52b9a81237dfc1201ec37dfafe4cfe454cc35301cca29fb1c55ab6aaa3a6e54c3d40b1539a9cf74dd484fdfa65fd3ef4013968

Download Submit
\Windows\system\rundll32.exe

Filesize
82KB

MD5
f6143d538de48458e854c0c7a91d540d

SHA1
ad43c14712131a84780fd7320a732edb83a58d23

SHA256
5557890999b097d291de839ee0b12173a619065ae78321bfc0ae3250104f7de6

SHA512
c7c678f77e1a74fcc2f176d20655d9b3395a920577003b55a89c5a0726bf063864088a655d113021255bb424bdce076f5418e9726d24fcd3e58c7101b667c8fa

Download Submit
memory/2504-0-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/2504-12-0x00000000003C0000-0x00000000003D6000-memory.dmp

Filesize
88KB

Download
memory/2504-17-0x00000000003C0000-0x00000000003D6000-memory.dmp

Filesize
88KB

Download
memory/2504-22-0x00000000003C0000-0x00000000003C6000-memory.dmp

Filesize
24KB

Download
memory/2504-21-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/2692-20-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads