b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485

General

Target

b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe
Size

81KB
MD5

7833a4ae985c56c64bb62456b4cbda71
SHA1

cf320643e8c48cf753fc8c4992526625e1c086c6
SHA256

b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485
SHA512

e5edcc105922a6774d3d5153dc72a714ec66af98e65b8e5e9a32f98f29f9a4c1fb5018e27d3b8e9f36d31de50b214d97eac1b85ff1eb1978e7ef9702b5bab604
SSDEEP

1536:RshfSWHHNvoLqNwDDGw02eQmh0HjWOoA1cfYf9:GhfxHNIreQm+HiXA1cfYf9

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2336	rundll32.exe

Loads dropped DLL 2 IoCs

pid	Process
2296	b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe
2296	b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.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\" %*"	rundll32.exe
Key created	\REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command	b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*"	b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe
Key created	\REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command	rundll32.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\¢«.exe	b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe
File created	C:\Windows\SysWOW64\¢«.exe	b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe
File opened for modification	C:\Windows\SysWOW64\notepad¢¬.exe	b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe
File created	C:\Windows\SysWOW64\notepad¢¬.exe	b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system\rundll32.exe	b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe
File created	C:\Windows\system\rundll32.exe	b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe

Modifies registry class 15 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe
Key created	\REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command	rundll32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainVer = "506"	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¢¬ %1"	rundll32.exe
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad¢¬ %1"	b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainSetup = "1699771743"	rundll32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainUp = "1699771743"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*"	b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	rundll32.exe
Key created	\REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command	b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe
Key created	\REGISTRY\MACHINE\Software\Classes\txtfile\shell\open\command	b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad.exe %1"	b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	rundll32.exe

Suspicious behavior: EnumeratesProcesses 14 IoCs

pid	Process
2296	b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe
2296	b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe
2296	b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe
2296	b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe
2296	b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe
2296	b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe
2296	b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe
2296	b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe
2296	b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe
2296	b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe
2296	b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe
2296	b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe
2296	b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe
2296	b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2336	rundll32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
2296	b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe
2336	rundll32.exe
2336	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2296 wrote to memory of 2336	2296	b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe	28
PID 2296 wrote to memory of 2336	2296	b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe	28
PID 2296 wrote to memory of 2336	2296	b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe	28
PID 2296 wrote to memory of 2336	2296	b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe	28
PID 2296 wrote to memory of 2336	2296	b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe	28
PID 2296 wrote to memory of 2336	2296	b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe	28
PID 2296 wrote to memory of 2336	2296	b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe	28

C:\Users\Admin\AppData\Local\Temp\b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe
"C:\Users\Admin\AppData\Local\Temp\b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.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:2296
- 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:2336

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

Loading Replay Monitor...

Downloads

C:\Windows\SysWOW64\notepad¢¬.exe

Filesize
78KB

MD5
795794cb666c87e81396cb7de6c6b8c5

SHA1
699d92173c4c4c043deb820abcccb171ab53b28e

SHA256
56bed55f552c151f1b77f639171edf45f0aa5b890a79c27a2bb6f24fa5fd847f

SHA512
1d3701be68769a1a921dcb316b30b4c21d0699d822fce11bf27a5f32958159bb512e0e5a0213b9015cf8323885e63d8bd95ad1877d192d4e93069d7850fe3e53

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

Filesize
80KB

MD5
17e6f86e4a81d5b9d5e3c8d2069bb942

SHA1
0685bb8d2e07e9166d117bdf4a8a6871494e5fb2

SHA256
775670ef0630c4982965382da287cbbaad8f2cef51156c5bcbc9889bf74fe152

SHA512
658874a2b1054a2ba53b923d404a057fbed719f19713b5966ecad10ddfa6f2108a5f0e9f85dd5cfbab90828273bc05dab0714e547674e9a7560836878634289e

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

Filesize
80KB

MD5
17e6f86e4a81d5b9d5e3c8d2069bb942

SHA1
0685bb8d2e07e9166d117bdf4a8a6871494e5fb2

SHA256
775670ef0630c4982965382da287cbbaad8f2cef51156c5bcbc9889bf74fe152

SHA512
658874a2b1054a2ba53b923d404a057fbed719f19713b5966ecad10ddfa6f2108a5f0e9f85dd5cfbab90828273bc05dab0714e547674e9a7560836878634289e

Download Submit
\Windows\system\rundll32.exe

Filesize
80KB

MD5
17e6f86e4a81d5b9d5e3c8d2069bb942

SHA1
0685bb8d2e07e9166d117bdf4a8a6871494e5fb2

SHA256
775670ef0630c4982965382da287cbbaad8f2cef51156c5bcbc9889bf74fe152

SHA512
658874a2b1054a2ba53b923d404a057fbed719f19713b5966ecad10ddfa6f2108a5f0e9f85dd5cfbab90828273bc05dab0714e547674e9a7560836878634289e

Download Submit
\Windows\system\rundll32.exe

Filesize
80KB

MD5
17e6f86e4a81d5b9d5e3c8d2069bb942

SHA1
0685bb8d2e07e9166d117bdf4a8a6871494e5fb2

SHA256
775670ef0630c4982965382da287cbbaad8f2cef51156c5bcbc9889bf74fe152

SHA512
658874a2b1054a2ba53b923d404a057fbed719f19713b5966ecad10ddfa6f2108a5f0e9f85dd5cfbab90828273bc05dab0714e547674e9a7560836878634289e

Download Submit
memory/2296-0-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/2296-12-0x0000000000240000-0x0000000000256000-memory.dmp

Filesize
88KB

Download
memory/2296-20-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/2296-21-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2336-18-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads