b3111490a3101e1765077dd5841983a1e3d5a1ad833ef43fecf4a581fbe3798d

General

Target

b3111490a3101e1765077dd5841983a1e3d5a1ad833ef43fecf4a581fbe3798d.exe
Size

75KB
MD5

390740fe6db9be4431f3fd0e0c2a3ba6
SHA1

ba2060ab400d4e9bd4c4f4518963e3d00f0fa4e0
SHA256

b3111490a3101e1765077dd5841983a1e3d5a1ad833ef43fecf4a581fbe3798d
SHA512

f950466bfc690637eddce9176fcd776532814773b8184811cde519363f09ecbd3ef9d8204eec4a7c746d09c100902a491c4d66a0d511c5495209dbb1be8285f8
SSDEEP

1536:RshfSWHHNvoLqNwDDGw02eQmh0HjWO6bE:GhfxHNIreQm+HiXbE

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
3064	rundll32.exe

Loads dropped DLL 2 IoCs

pid	Process
1724	b3111490a3101e1765077dd5841983a1e3d5a1ad833ef43fecf4a581fbe3798d.exe
1724	b3111490a3101e1765077dd5841983a1e3d5a1ad833ef43fecf4a581fbe3798d.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\" %*"	b3111490a3101e1765077dd5841983a1e3d5a1ad833ef43fecf4a581fbe3798d.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	b3111490a3101e1765077dd5841983a1e3d5a1ad833ef43fecf4a581fbe3798d.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	b3111490a3101e1765077dd5841983a1e3d5a1ad833ef43fecf4a581fbe3798d.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\¢«.exe	b3111490a3101e1765077dd5841983a1e3d5a1ad833ef43fecf4a581fbe3798d.exe
File created	C:\Windows\SysWOW64\¢«.exe	b3111490a3101e1765077dd5841983a1e3d5a1ad833ef43fecf4a581fbe3798d.exe
File opened for modification	C:\Windows\SysWOW64\notepad¢¬.exe	b3111490a3101e1765077dd5841983a1e3d5a1ad833ef43fecf4a581fbe3798d.exe
File created	C:\Windows\SysWOW64\notepad¢¬.exe	b3111490a3101e1765077dd5841983a1e3d5a1ad833ef43fecf4a581fbe3798d.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system\rundll32.exe	b3111490a3101e1765077dd5841983a1e3d5a1ad833ef43fecf4a581fbe3798d.exe
File created	C:\Windows\system\rundll32.exe	b3111490a3101e1765077dd5841983a1e3d5a1ad833ef43fecf4a581fbe3798d.exe

Modifies registry class 15 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command	b3111490a3101e1765077dd5841983a1e3d5a1ad833ef43fecf4a581fbe3798d.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	b3111490a3101e1765077dd5841983a1e3d5a1ad833ef43fecf4a581fbe3798d.exe
Key created	\REGISTRY\MACHINE\Software\Classes\txtfile\shell\open\command	rundll32.exe
Key created	\REGISTRY\MACHINE\Software\Classes\txtfile\shell\open\command	b3111490a3101e1765077dd5841983a1e3d5a1ad833ef43fecf4a581fbe3798d.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad¢¬ %1"	b3111490a3101e1765077dd5841983a1e3d5a1ad833ef43fecf4a581fbe3798d.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainSetup = "1717550974"	rundll32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainUp = "1717550974"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad¢¬ %1"	rundll32.exe
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	b3111490a3101e1765077dd5841983a1e3d5a1ad833ef43fecf4a581fbe3798d.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad.exe %1"	b3111490a3101e1765077dd5841983a1e3d5a1ad833ef43fecf4a581fbe3798d.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\" %*"	b3111490a3101e1765077dd5841983a1e3d5a1ad833ef43fecf4a581fbe3798d.exe
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	rundll32.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\" %*"	rundll32.exe

Suspicious behavior: EnumeratesProcesses 14 IoCs

pid	Process
1724	b3111490a3101e1765077dd5841983a1e3d5a1ad833ef43fecf4a581fbe3798d.exe
1724	b3111490a3101e1765077dd5841983a1e3d5a1ad833ef43fecf4a581fbe3798d.exe
1724	b3111490a3101e1765077dd5841983a1e3d5a1ad833ef43fecf4a581fbe3798d.exe
1724	b3111490a3101e1765077dd5841983a1e3d5a1ad833ef43fecf4a581fbe3798d.exe
1724	b3111490a3101e1765077dd5841983a1e3d5a1ad833ef43fecf4a581fbe3798d.exe
1724	b3111490a3101e1765077dd5841983a1e3d5a1ad833ef43fecf4a581fbe3798d.exe
1724	b3111490a3101e1765077dd5841983a1e3d5a1ad833ef43fecf4a581fbe3798d.exe
1724	b3111490a3101e1765077dd5841983a1e3d5a1ad833ef43fecf4a581fbe3798d.exe
1724	b3111490a3101e1765077dd5841983a1e3d5a1ad833ef43fecf4a581fbe3798d.exe
1724	b3111490a3101e1765077dd5841983a1e3d5a1ad833ef43fecf4a581fbe3798d.exe
1724	b3111490a3101e1765077dd5841983a1e3d5a1ad833ef43fecf4a581fbe3798d.exe
1724	b3111490a3101e1765077dd5841983a1e3d5a1ad833ef43fecf4a581fbe3798d.exe
1724	b3111490a3101e1765077dd5841983a1e3d5a1ad833ef43fecf4a581fbe3798d.exe
1724	b3111490a3101e1765077dd5841983a1e3d5a1ad833ef43fecf4a581fbe3798d.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3064	rundll32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
1724	b3111490a3101e1765077dd5841983a1e3d5a1ad833ef43fecf4a581fbe3798d.exe
3064	rundll32.exe
3064	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1724 wrote to memory of 3064	1724	b3111490a3101e1765077dd5841983a1e3d5a1ad833ef43fecf4a581fbe3798d.exe	28
PID 1724 wrote to memory of 3064	1724	b3111490a3101e1765077dd5841983a1e3d5a1ad833ef43fecf4a581fbe3798d.exe	28
PID 1724 wrote to memory of 3064	1724	b3111490a3101e1765077dd5841983a1e3d5a1ad833ef43fecf4a581fbe3798d.exe	28
PID 1724 wrote to memory of 3064	1724	b3111490a3101e1765077dd5841983a1e3d5a1ad833ef43fecf4a581fbe3798d.exe	28
PID 1724 wrote to memory of 3064	1724	b3111490a3101e1765077dd5841983a1e3d5a1ad833ef43fecf4a581fbe3798d.exe	28
PID 1724 wrote to memory of 3064	1724	b3111490a3101e1765077dd5841983a1e3d5a1ad833ef43fecf4a581fbe3798d.exe	28
PID 1724 wrote to memory of 3064	1724	b3111490a3101e1765077dd5841983a1e3d5a1ad833ef43fecf4a581fbe3798d.exe	28

C:\Users\Admin\AppData\Local\Temp\b3111490a3101e1765077dd5841983a1e3d5a1ad833ef43fecf4a581fbe3798d.exe
"C:\Users\Admin\AppData\Local\Temp\b3111490a3101e1765077dd5841983a1e3d5a1ad833ef43fecf4a581fbe3798d.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:1724
- 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:3064

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
78KB

MD5
ccb6a133687b1f8d96c39e4a7f27bf96

SHA1
eb06b18eae3a1a83545f7a02126e9682891ca139

SHA256
ad939e0ab3d0033c7d8f94047dcc5414e6cae80826c9e5e083e0f89c273b884d

SHA512
6b7ee80932246e26805663cd2eb51c922b8f2c336321233ea0a025b01fcae7d0890ccb0be38288aafa6a9be9c890ba5e1c730af77bf404f3408c9445b1561137

Download Submit
\Windows\system\rundll32.exe

Filesize
79KB

MD5
11441b40a379e2714a40e6ab484351c0

SHA1
b412a9cc37c45e25f7a81e7cc06169d27c1b7171

SHA256
c60fc2abae6bd996b51b89f1eb90b7c4acfb3e3495ba7747cd875b14382d4c5f

SHA512
45bc756c02fbbff77ac053be7c8a91d53b9c7c20b3186bbce0094a97c4df5e7bc97c56a538cea82ea1c048ebcc6f0029e23095dbc3a7e83634803a894f1bc5ef

Download Submit
memory/1724-0-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/1724-18-0x0000000000270000-0x0000000000286000-memory.dmp

Filesize
88KB

Download
memory/1724-17-0x0000000000270000-0x0000000000286000-memory.dmp

Filesize
88KB

Download
memory/1724-21-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/1724-22-0x0000000000270000-0x0000000000272000-memory.dmp

Filesize
8KB

Download
memory/3064-19-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads