bc0ceb1eee5fa5c428c5698b4fa2697d1fffa1f1f4c87111445abbffb3480c29

General

Target

bc0ceb1eee5fa5c428c5698b4fa2697d1fffa1f1f4c87111445abbffb3480c29.exe
Size

74KB
MD5

ba5cce8890b56e70038224f949801fb7
SHA1

836352f8ce5b3ab527a5f41a630125dcba850aa6
SHA256

bc0ceb1eee5fa5c428c5698b4fa2697d1fffa1f1f4c87111445abbffb3480c29
SHA512

1decf3d4fdfa4dc3dddb2b2880df0e9f62b8b6f94ea870655f84cb838c8a6602c1e80085f0162130f3806307eca3e72fe0c5fd0306df2a0de6d47b6792f5edf5
SSDEEP

768:agO5xRYi+SfSWHHNvvG5bnl/NqNwsKVDstHxYD0p1aXKynF0vQmYZS0HdJnfWOaN:RshfSWHHNvoLqNwDDGw02eQmh0HjWOaN

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2000	rundll32.exe

Loads dropped DLL 2 IoCs

pid	Process
2500	bc0ceb1eee5fa5c428c5698b4fa2697d1fffa1f1f4c87111445abbffb3480c29.exe
2500	bc0ceb1eee5fa5c428c5698b4fa2697d1fffa1f1f4c87111445abbffb3480c29.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	bc0ceb1eee5fa5c428c5698b4fa2697d1fffa1f1f4c87111445abbffb3480c29.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*"	bc0ceb1eee5fa5c428c5698b4fa2697d1fffa1f1f4c87111445abbffb3480c29.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	bc0ceb1eee5fa5c428c5698b4fa2697d1fffa1f1f4c87111445abbffb3480c29.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 created	C:\Windows\SysWOW64\notepad¢¬.exe	bc0ceb1eee5fa5c428c5698b4fa2697d1fffa1f1f4c87111445abbffb3480c29.exe
File opened for modification	C:\Windows\SysWOW64\¢«.exe	bc0ceb1eee5fa5c428c5698b4fa2697d1fffa1f1f4c87111445abbffb3480c29.exe
File created	C:\Windows\SysWOW64\¢«.exe	bc0ceb1eee5fa5c428c5698b4fa2697d1fffa1f1f4c87111445abbffb3480c29.exe
File opened for modification	C:\Windows\SysWOW64\notepad¢¬.exe	bc0ceb1eee5fa5c428c5698b4fa2697d1fffa1f1f4c87111445abbffb3480c29.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system\rundll32.exe	bc0ceb1eee5fa5c428c5698b4fa2697d1fffa1f1f4c87111445abbffb3480c29.exe
File created	C:\Windows\system\rundll32.exe	bc0ceb1eee5fa5c428c5698b4fa2697d1fffa1f1f4c87111445abbffb3480c29.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	bc0ceb1eee5fa5c428c5698b4fa2697d1fffa1f1f4c87111445abbffb3480c29.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\exefile\shell\open\command\ = "¢« \"%1\" %*"	bc0ceb1eee5fa5c428c5698b4fa2697d1fffa1f1f4c87111445abbffb3480c29.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\MSipv	bc0ceb1eee5fa5c428c5698b4fa2697d1fffa1f1f4c87111445abbffb3480c29.exe
Key created	\REGISTRY\MACHINE\Software\Classes\txtfile\shell\open\command	bc0ceb1eee5fa5c428c5698b4fa2697d1fffa1f1f4c87111445abbffb3480c29.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\exefile\shell\open\command	bc0ceb1eee5fa5c428c5698b4fa2697d1fffa1f1f4c87111445abbffb3480c29.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad.exe %1"	bc0ceb1eee5fa5c428c5698b4fa2697d1fffa1f1f4c87111445abbffb3480c29.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainSetup = "1725175249"	rundll32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainUp = "1725175249"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*"	bc0ceb1eee5fa5c428c5698b4fa2697d1fffa1f1f4c87111445abbffb3480c29.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad¢¬ %1"	bc0ceb1eee5fa5c428c5698b4fa2697d1fffa1f1f4c87111445abbffb3480c29.exe
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	rundll32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainVer = "506"	rundll32.exe

Suspicious behavior: EnumeratesProcesses 14 IoCs

pid	Process
2500	bc0ceb1eee5fa5c428c5698b4fa2697d1fffa1f1f4c87111445abbffb3480c29.exe
2500	bc0ceb1eee5fa5c428c5698b4fa2697d1fffa1f1f4c87111445abbffb3480c29.exe
2500	bc0ceb1eee5fa5c428c5698b4fa2697d1fffa1f1f4c87111445abbffb3480c29.exe
2500	bc0ceb1eee5fa5c428c5698b4fa2697d1fffa1f1f4c87111445abbffb3480c29.exe
2500	bc0ceb1eee5fa5c428c5698b4fa2697d1fffa1f1f4c87111445abbffb3480c29.exe
2500	bc0ceb1eee5fa5c428c5698b4fa2697d1fffa1f1f4c87111445abbffb3480c29.exe
2500	bc0ceb1eee5fa5c428c5698b4fa2697d1fffa1f1f4c87111445abbffb3480c29.exe
2500	bc0ceb1eee5fa5c428c5698b4fa2697d1fffa1f1f4c87111445abbffb3480c29.exe
2500	bc0ceb1eee5fa5c428c5698b4fa2697d1fffa1f1f4c87111445abbffb3480c29.exe
2500	bc0ceb1eee5fa5c428c5698b4fa2697d1fffa1f1f4c87111445abbffb3480c29.exe
2500	bc0ceb1eee5fa5c428c5698b4fa2697d1fffa1f1f4c87111445abbffb3480c29.exe
2500	bc0ceb1eee5fa5c428c5698b4fa2697d1fffa1f1f4c87111445abbffb3480c29.exe
2500	bc0ceb1eee5fa5c428c5698b4fa2697d1fffa1f1f4c87111445abbffb3480c29.exe
2500	bc0ceb1eee5fa5c428c5698b4fa2697d1fffa1f1f4c87111445abbffb3480c29.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2000	rundll32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
2500	bc0ceb1eee5fa5c428c5698b4fa2697d1fffa1f1f4c87111445abbffb3480c29.exe
2000	rundll32.exe
2000	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2500 wrote to memory of 2000	2500	bc0ceb1eee5fa5c428c5698b4fa2697d1fffa1f1f4c87111445abbffb3480c29.exe	30
PID 2500 wrote to memory of 2000	2500	bc0ceb1eee5fa5c428c5698b4fa2697d1fffa1f1f4c87111445abbffb3480c29.exe	30
PID 2500 wrote to memory of 2000	2500	bc0ceb1eee5fa5c428c5698b4fa2697d1fffa1f1f4c87111445abbffb3480c29.exe	30
PID 2500 wrote to memory of 2000	2500	bc0ceb1eee5fa5c428c5698b4fa2697d1fffa1f1f4c87111445abbffb3480c29.exe	30
PID 2500 wrote to memory of 2000	2500	bc0ceb1eee5fa5c428c5698b4fa2697d1fffa1f1f4c87111445abbffb3480c29.exe	30
PID 2500 wrote to memory of 2000	2500	bc0ceb1eee5fa5c428c5698b4fa2697d1fffa1f1f4c87111445abbffb3480c29.exe	30
PID 2500 wrote to memory of 2000	2500	bc0ceb1eee5fa5c428c5698b4fa2697d1fffa1f1f4c87111445abbffb3480c29.exe	30

C:\Users\Admin\AppData\Local\Temp\bc0ceb1eee5fa5c428c5698b4fa2697d1fffa1f1f4c87111445abbffb3480c29.exe
"C:\Users\Admin\AppData\Local\Temp\bc0ceb1eee5fa5c428c5698b4fa2697d1fffa1f1f4c87111445abbffb3480c29.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:2500
- 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:2000

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
0bd1cd8e1b3e08669d757893c1b620da

SHA1
3d33f20efe61bc652cfc22e93ef53ac90167fddb

SHA256
9c578f2903462dc014e01ed0f6f5328692cafda8781a4be5e8bc0cc66a8e5f15

SHA512
7f9c0b5297f2ac36bf8a0817c008a185fdccb733b30d7fff8062005f995b7aeedf14b8f060847bbe4c4f25348e1267427953e4c1452f969d4037f30fc7630e09

Download Submit
\Windows\system\rundll32.exe

Filesize
73KB

MD5
d2c0dd76e05e3ed2106089468b2d65a2

SHA1
642967312de7e370e19515651b6cb460bec6e87e

SHA256
13cd0eb0d1b9065937173ff5e79f8b5088e0690d65e60d3782a491366697d2e3

SHA512
8e9c96fe25347aa869797e0ceba8adf0d74ad34a76a24e4fb9eb23dfdfe521b130802e3b2c8ee303f365b2bce51e70ff7bd211645c0c20b79a7ceba5d0dfc69a

Download Submit
memory/2000-21-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/2500-0-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/2500-11-0x0000000000340000-0x0000000000356000-memory.dmp

Filesize
88KB

Download
memory/2500-17-0x0000000000340000-0x0000000000356000-memory.dmp

Filesize
88KB

Download
memory/2500-20-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads