b7ec2f99f450e34da5752b27bbca87c1812819715d39ca7915d8d1e81c5edf4c

General

Target

b7ec2f99f450e34da5752b27bbca87c1812819715d39ca7915d8d1e81c5edf4c.exe
Size

80KB
MD5

05feebda8cb454bf60ec3ffd8c322977
SHA1

f061023c87e2460ad71e6ecb9d3b1994bda5e28c
SHA256

b7ec2f99f450e34da5752b27bbca87c1812819715d39ca7915d8d1e81c5edf4c
SHA512

6dcb2fac3304323f5d2102c4b6309781948ae20fe8a239b8dc606b00a66256f727faa290d17526a761c91b10cfd8e96312bd1489e2ff4d10403a25dc93fb019e
SSDEEP

1536:RshfSWHHNvoLqNwDDGw02eQmh0HjWOKqK:GhfxHNIreQm+HiPqK

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1624	rundll32.exe

Loads dropped DLL 2 IoCs

pid	Process
1988	b7ec2f99f450e34da5752b27bbca87c1812819715d39ca7915d8d1e81c5edf4c.exe
1988	b7ec2f99f450e34da5752b27bbca87c1812819715d39ca7915d8d1e81c5edf4c.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	b7ec2f99f450e34da5752b27bbca87c1812819715d39ca7915d8d1e81c5edf4c.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*"	b7ec2f99f450e34da5752b27bbca87c1812819715d39ca7915d8d1e81c5edf4c.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	b7ec2f99f450e34da5752b27bbca87c1812819715d39ca7915d8d1e81c5edf4c.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\¢«.exe	b7ec2f99f450e34da5752b27bbca87c1812819715d39ca7915d8d1e81c5edf4c.exe
File created	C:\Windows\SysWOW64\¢«.exe	b7ec2f99f450e34da5752b27bbca87c1812819715d39ca7915d8d1e81c5edf4c.exe
File opened for modification	C:\Windows\SysWOW64\notepad¢¬.exe	b7ec2f99f450e34da5752b27bbca87c1812819715d39ca7915d8d1e81c5edf4c.exe
File created	C:\Windows\SysWOW64\notepad¢¬.exe	b7ec2f99f450e34da5752b27bbca87c1812819715d39ca7915d8d1e81c5edf4c.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system\rundll32.exe	b7ec2f99f450e34da5752b27bbca87c1812819715d39ca7915d8d1e81c5edf4c.exe
File created	C:\Windows\system\rundll32.exe	b7ec2f99f450e34da5752b27bbca87c1812819715d39ca7915d8d1e81c5edf4c.exe

Modifies registry class 15 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	rundll32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainUp = "1718040759"	rundll32.exe
Key created	\REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command	rundll32.exe
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	b7ec2f99f450e34da5752b27bbca87c1812819715d39ca7915d8d1e81c5edf4c.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	b7ec2f99f450e34da5752b27bbca87c1812819715d39ca7915d8d1e81c5edf4c.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	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
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*"	b7ec2f99f450e34da5752b27bbca87c1812819715d39ca7915d8d1e81c5edf4c.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad.exe %1"	b7ec2f99f450e34da5752b27bbca87c1812819715d39ca7915d8d1e81c5edf4c.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad¢¬ %1"	b7ec2f99f450e34da5752b27bbca87c1812819715d39ca7915d8d1e81c5edf4c.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainVer = "506"	rundll32.exe
Key created	\REGISTRY\MACHINE\Software\Classes\txtfile\shell\open\command	b7ec2f99f450e34da5752b27bbca87c1812819715d39ca7915d8d1e81c5edf4c.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainSetup = "1718040759"	rundll32.exe
Key created	\REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command	b7ec2f99f450e34da5752b27bbca87c1812819715d39ca7915d8d1e81c5edf4c.exe

Suspicious behavior: EnumeratesProcesses 14 IoCs

pid	Process
1988	b7ec2f99f450e34da5752b27bbca87c1812819715d39ca7915d8d1e81c5edf4c.exe
1988	b7ec2f99f450e34da5752b27bbca87c1812819715d39ca7915d8d1e81c5edf4c.exe
1988	b7ec2f99f450e34da5752b27bbca87c1812819715d39ca7915d8d1e81c5edf4c.exe
1988	b7ec2f99f450e34da5752b27bbca87c1812819715d39ca7915d8d1e81c5edf4c.exe
1988	b7ec2f99f450e34da5752b27bbca87c1812819715d39ca7915d8d1e81c5edf4c.exe
1988	b7ec2f99f450e34da5752b27bbca87c1812819715d39ca7915d8d1e81c5edf4c.exe
1988	b7ec2f99f450e34da5752b27bbca87c1812819715d39ca7915d8d1e81c5edf4c.exe
1988	b7ec2f99f450e34da5752b27bbca87c1812819715d39ca7915d8d1e81c5edf4c.exe
1988	b7ec2f99f450e34da5752b27bbca87c1812819715d39ca7915d8d1e81c5edf4c.exe
1988	b7ec2f99f450e34da5752b27bbca87c1812819715d39ca7915d8d1e81c5edf4c.exe
1988	b7ec2f99f450e34da5752b27bbca87c1812819715d39ca7915d8d1e81c5edf4c.exe
1988	b7ec2f99f450e34da5752b27bbca87c1812819715d39ca7915d8d1e81c5edf4c.exe
1988	b7ec2f99f450e34da5752b27bbca87c1812819715d39ca7915d8d1e81c5edf4c.exe
1988	b7ec2f99f450e34da5752b27bbca87c1812819715d39ca7915d8d1e81c5edf4c.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1624	rundll32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
1988	b7ec2f99f450e34da5752b27bbca87c1812819715d39ca7915d8d1e81c5edf4c.exe
1624	rundll32.exe
1624	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1988 wrote to memory of 1624	1988	b7ec2f99f450e34da5752b27bbca87c1812819715d39ca7915d8d1e81c5edf4c.exe	28
PID 1988 wrote to memory of 1624	1988	b7ec2f99f450e34da5752b27bbca87c1812819715d39ca7915d8d1e81c5edf4c.exe	28
PID 1988 wrote to memory of 1624	1988	b7ec2f99f450e34da5752b27bbca87c1812819715d39ca7915d8d1e81c5edf4c.exe	28
PID 1988 wrote to memory of 1624	1988	b7ec2f99f450e34da5752b27bbca87c1812819715d39ca7915d8d1e81c5edf4c.exe	28
PID 1988 wrote to memory of 1624	1988	b7ec2f99f450e34da5752b27bbca87c1812819715d39ca7915d8d1e81c5edf4c.exe	28
PID 1988 wrote to memory of 1624	1988	b7ec2f99f450e34da5752b27bbca87c1812819715d39ca7915d8d1e81c5edf4c.exe	28
PID 1988 wrote to memory of 1624	1988	b7ec2f99f450e34da5752b27bbca87c1812819715d39ca7915d8d1e81c5edf4c.exe	28

C:\Users\Admin\AppData\Local\Temp\b7ec2f99f450e34da5752b27bbca87c1812819715d39ca7915d8d1e81c5edf4c.exe
"C:\Users\Admin\AppData\Local\Temp\b7ec2f99f450e34da5752b27bbca87c1812819715d39ca7915d8d1e81c5edf4c.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:1988
- 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:1624

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
73KB

MD5
d2c0dd76e05e3ed2106089468b2d65a2

SHA1
642967312de7e370e19515651b6cb460bec6e87e

SHA256
13cd0eb0d1b9065937173ff5e79f8b5088e0690d65e60d3782a491366697d2e3

SHA512
8e9c96fe25347aa869797e0ceba8adf0d74ad34a76a24e4fb9eb23dfdfe521b130802e3b2c8ee303f365b2bce51e70ff7bd211645c0c20b79a7ceba5d0dfc69a

Download Submit
\Windows\system\rundll32.exe

Filesize
78KB

MD5
affabdeb7fb7ec6a06a61a78df1b4f87

SHA1
58d7832738f14d083af6b902122531718a0adec4

SHA256
cc999ed31e2138680bb9444f87b19e0fb62db65e721e8af21ede417823640119

SHA512
12aa46ffe1142b92eb04fffc21bb1b54ae4f98863528efb33e3d3a0147abe2684876cedcc7b6003feaf294e40955e1b2d8fe2f9161829907907bfd677597ed1c

Download Submit
memory/1988-0-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/1988-17-0x0000000000270000-0x0000000000286000-memory.dmp

Filesize
88KB

Download
memory/1988-18-0x0000000000270000-0x0000000000286000-memory.dmp

Filesize
88KB

Download
memory/1988-20-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/1988-21-0x0000000000270000-0x0000000000272000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads