f45d142c36bef71aaa3bb31e9c17e592f568dadeef5c731ff434c5d161cb22f5

General

Target

f45d142c36bef71aaa3bb31e9c17e592f568dadeef5c731ff434c5d161cb22f5.exe
Size

77KB
MD5

a13cf27fe90794dc1b5b2ce508ee98ce
SHA1

536e75e1a718b66b05c5c1d92631afc3c058d711
SHA256

f45d142c36bef71aaa3bb31e9c17e592f568dadeef5c731ff434c5d161cb22f5
SHA512

211ac2fec668113e2639743adea83f308f7a5565f8d23e954876ac3be73dbad0bd7794e2f8fac285433311155a66fe471299d0bf1642a8cbf03602d965415a22
SSDEEP

1536:RshfSWHHNvoLqNwDDGw02eQmh0HjWOyxkse:GhfxHNIreQm+Hi5xkse

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
4544	rundll32.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	f45d142c36bef71aaa3bb31e9c17e592f568dadeef5c731ff434c5d161cb22f5.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*"	f45d142c36bef71aaa3bb31e9c17e592f568dadeef5c731ff434c5d161cb22f5.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	f45d142c36bef71aaa3bb31e9c17e592f568dadeef5c731ff434c5d161cb22f5.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 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\notepad¢¬.exe	f45d142c36bef71aaa3bb31e9c17e592f568dadeef5c731ff434c5d161cb22f5.exe
File created	C:\Windows\SysWOW64\notepad¢¬.exe	f45d142c36bef71aaa3bb31e9c17e592f568dadeef5c731ff434c5d161cb22f5.exe
File opened for modification	C:\Windows\SysWOW64\¢«.exe	f45d142c36bef71aaa3bb31e9c17e592f568dadeef5c731ff434c5d161cb22f5.exe
File created	C:\Windows\SysWOW64\¢«.exe	f45d142c36bef71aaa3bb31e9c17e592f568dadeef5c731ff434c5d161cb22f5.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system\rundll32.exe	f45d142c36bef71aaa3bb31e9c17e592f568dadeef5c731ff434c5d161cb22f5.exe
File created	C:\Windows\system\rundll32.exe	f45d142c36bef71aaa3bb31e9c17e592f568dadeef5c731ff434c5d161cb22f5.exe

Modifies registry class 15 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	f45d142c36bef71aaa3bb31e9c17e592f568dadeef5c731ff434c5d161cb22f5.exe
Key created	\REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command	f45d142c36bef71aaa3bb31e9c17e592f568dadeef5c731ff434c5d161cb22f5.exe
Key created	\REGISTRY\MACHINE\Software\Classes\txtfile\shell\open\command	f45d142c36bef71aaa3bb31e9c17e592f568dadeef5c731ff434c5d161cb22f5.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad.exe %1"	f45d142c36bef71aaa3bb31e9c17e592f568dadeef5c731ff434c5d161cb22f5.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad¢¬ %1"	f45d142c36bef71aaa3bb31e9c17e592f568dadeef5c731ff434c5d161cb22f5.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\" %*"	f45d142c36bef71aaa3bb31e9c17e592f568dadeef5c731ff434c5d161cb22f5.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	f45d142c36bef71aaa3bb31e9c17e592f568dadeef5c731ff434c5d161cb22f5.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\txtfile\shell\open\command	rundll32.exe
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	rundll32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainSetup = "1716762158"	rundll32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainUp = "1716762158"	rundll32.exe
Key created	\REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command	rundll32.exe

Suspicious behavior: EnumeratesProcesses 28 IoCs

pid	Process
4860	f45d142c36bef71aaa3bb31e9c17e592f568dadeef5c731ff434c5d161cb22f5.exe
4860	f45d142c36bef71aaa3bb31e9c17e592f568dadeef5c731ff434c5d161cb22f5.exe
4860	f45d142c36bef71aaa3bb31e9c17e592f568dadeef5c731ff434c5d161cb22f5.exe
4860	f45d142c36bef71aaa3bb31e9c17e592f568dadeef5c731ff434c5d161cb22f5.exe
4860	f45d142c36bef71aaa3bb31e9c17e592f568dadeef5c731ff434c5d161cb22f5.exe
4860	f45d142c36bef71aaa3bb31e9c17e592f568dadeef5c731ff434c5d161cb22f5.exe
4860	f45d142c36bef71aaa3bb31e9c17e592f568dadeef5c731ff434c5d161cb22f5.exe
4860	f45d142c36bef71aaa3bb31e9c17e592f568dadeef5c731ff434c5d161cb22f5.exe
4860	f45d142c36bef71aaa3bb31e9c17e592f568dadeef5c731ff434c5d161cb22f5.exe
4860	f45d142c36bef71aaa3bb31e9c17e592f568dadeef5c731ff434c5d161cb22f5.exe
4860	f45d142c36bef71aaa3bb31e9c17e592f568dadeef5c731ff434c5d161cb22f5.exe
4860	f45d142c36bef71aaa3bb31e9c17e592f568dadeef5c731ff434c5d161cb22f5.exe
4860	f45d142c36bef71aaa3bb31e9c17e592f568dadeef5c731ff434c5d161cb22f5.exe
4860	f45d142c36bef71aaa3bb31e9c17e592f568dadeef5c731ff434c5d161cb22f5.exe
4860	f45d142c36bef71aaa3bb31e9c17e592f568dadeef5c731ff434c5d161cb22f5.exe
4860	f45d142c36bef71aaa3bb31e9c17e592f568dadeef5c731ff434c5d161cb22f5.exe
4860	f45d142c36bef71aaa3bb31e9c17e592f568dadeef5c731ff434c5d161cb22f5.exe
4860	f45d142c36bef71aaa3bb31e9c17e592f568dadeef5c731ff434c5d161cb22f5.exe
4860	f45d142c36bef71aaa3bb31e9c17e592f568dadeef5c731ff434c5d161cb22f5.exe
4860	f45d142c36bef71aaa3bb31e9c17e592f568dadeef5c731ff434c5d161cb22f5.exe
4860	f45d142c36bef71aaa3bb31e9c17e592f568dadeef5c731ff434c5d161cb22f5.exe
4860	f45d142c36bef71aaa3bb31e9c17e592f568dadeef5c731ff434c5d161cb22f5.exe
4860	f45d142c36bef71aaa3bb31e9c17e592f568dadeef5c731ff434c5d161cb22f5.exe
4860	f45d142c36bef71aaa3bb31e9c17e592f568dadeef5c731ff434c5d161cb22f5.exe
4860	f45d142c36bef71aaa3bb31e9c17e592f568dadeef5c731ff434c5d161cb22f5.exe
4860	f45d142c36bef71aaa3bb31e9c17e592f568dadeef5c731ff434c5d161cb22f5.exe
4860	f45d142c36bef71aaa3bb31e9c17e592f568dadeef5c731ff434c5d161cb22f5.exe
4860	f45d142c36bef71aaa3bb31e9c17e592f568dadeef5c731ff434c5d161cb22f5.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
4544	rundll32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
4860	f45d142c36bef71aaa3bb31e9c17e592f568dadeef5c731ff434c5d161cb22f5.exe
4544	rundll32.exe
4544	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4860 wrote to memory of 4544	4860	f45d142c36bef71aaa3bb31e9c17e592f568dadeef5c731ff434c5d161cb22f5.exe	91
PID 4860 wrote to memory of 4544	4860	f45d142c36bef71aaa3bb31e9c17e592f568dadeef5c731ff434c5d161cb22f5.exe	91
PID 4860 wrote to memory of 4544	4860	f45d142c36bef71aaa3bb31e9c17e592f568dadeef5c731ff434c5d161cb22f5.exe	91

C:\Users\Admin\AppData\Local\Temp\f45d142c36bef71aaa3bb31e9c17e592f568dadeef5c731ff434c5d161cb22f5.exe
"C:\Users\Admin\AppData\Local\Temp\f45d142c36bef71aaa3bb31e9c17e592f568dadeef5c731ff434c5d161cb22f5.exe"
1⤵
- 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:4860
- 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:4544

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4192 --field-trial-handle=3084,i,4016110471176367543,14287608422419064331,262144 --variations-seed-version /prefetch:8
1⤵
PID:4476

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
75KB

MD5
2a31476a62cb8a32d5d411def0089138

SHA1
1a77d14f96e46bdab016268d2e93bbfb35f814c3

SHA256
d683bacdbe7b5058482c0055d64d834eed8247d171ac0454eb434d4322c7ee57

SHA512
4d04dcb0aafd6a4260e564728eb0bb7f20debb766b10aec34621436cb083cead40c7f702bec8b49e879dd39a7b3493b932dfc01816d9f4c59a2d389980c4bb4e

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

Filesize
77KB

MD5
9c64a337b2520e26f809fc9b2459c697

SHA1
0a1cd1f3ac19ec9fc61982601d9e348d7a8733c5

SHA256
bf68cc5030a37362e652f48749d70afaf9273729f8efb0bd5fc2b24e616d2a55

SHA512
8b5d555ec469feac2699c6eec6cbefbee9db320458673eccaa6852d8e0c6255e834f36274d6af5c32f414192422c9d607ea0fb805b4fcb9350cff0aecc1592ca

Download Submit
memory/4860-0-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/4860-13-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads