85f3b7c77a02ea5e030e8637fc75d13996cbbcd13e6f2eae1e1ece5de8fc3a72

General

Target

85f3b7c77a02ea5e030e8637fc75d13996cbbcd13e6f2eae1e1ece5de8fc3a72.exe
Size

76KB
MD5

b40459c4643e2cfb354aaf8f673cbbff
SHA1

64d8ad8cf0d4efb2361d18a0d23210090d8de302
SHA256

85f3b7c77a02ea5e030e8637fc75d13996cbbcd13e6f2eae1e1ece5de8fc3a72
SHA512

78463d3fddf5b8d25634bd2afafccc1407d2bef7c128a600ace1823e6167da543212599de642374092fad3e924423472f27a1a4735443f092770891e8a93ec5e
SSDEEP

1536:RshfSWHHNvoLqNwDDGw02eQmh0HjWOpWAg:GhfxHNIreQm+HiaWAg

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1440	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	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	85f3b7c77a02ea5e030e8637fc75d13996cbbcd13e6f2eae1e1ece5de8fc3a72.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*"	85f3b7c77a02ea5e030e8637fc75d13996cbbcd13e6f2eae1e1ece5de8fc3a72.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	85f3b7c77a02ea5e030e8637fc75d13996cbbcd13e6f2eae1e1ece5de8fc3a72.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\notepad¢¬.exe	85f3b7c77a02ea5e030e8637fc75d13996cbbcd13e6f2eae1e1ece5de8fc3a72.exe
File opened for modification	C:\Windows\SysWOW64\¢«.exe	85f3b7c77a02ea5e030e8637fc75d13996cbbcd13e6f2eae1e1ece5de8fc3a72.exe
File created	C:\Windows\SysWOW64\¢«.exe	85f3b7c77a02ea5e030e8637fc75d13996cbbcd13e6f2eae1e1ece5de8fc3a72.exe
File opened for modification	C:\Windows\SysWOW64\notepad¢¬.exe	85f3b7c77a02ea5e030e8637fc75d13996cbbcd13e6f2eae1e1ece5de8fc3a72.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system\rundll32.exe	85f3b7c77a02ea5e030e8637fc75d13996cbbcd13e6f2eae1e1ece5de8fc3a72.exe
File created	C:\Windows\system\rundll32.exe	85f3b7c77a02ea5e030e8637fc75d13996cbbcd13e6f2eae1e1ece5de8fc3a72.exe

Modifies registry class 15 IoCs

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainSetup = "1717615935"	rundll32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainUp = "1717615935"	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	85f3b7c77a02ea5e030e8637fc75d13996cbbcd13e6f2eae1e1ece5de8fc3a72.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad¢¬ %1"	85f3b7c77a02ea5e030e8637fc75d13996cbbcd13e6f2eae1e1ece5de8fc3a72.exe
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	rundll32.exe
Key created	\REGISTRY\MACHINE\Software\Classes\exefile\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	85f3b7c77a02ea5e030e8637fc75d13996cbbcd13e6f2eae1e1ece5de8fc3a72.exe
Key created	\REGISTRY\MACHINE\Software\Classes\txtfile\shell\open\command	85f3b7c77a02ea5e030e8637fc75d13996cbbcd13e6f2eae1e1ece5de8fc3a72.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad.exe %1"	85f3b7c77a02ea5e030e8637fc75d13996cbbcd13e6f2eae1e1ece5de8fc3a72.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	85f3b7c77a02ea5e030e8637fc75d13996cbbcd13e6f2eae1e1ece5de8fc3a72.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\" %*"	85f3b7c77a02ea5e030e8637fc75d13996cbbcd13e6f2eae1e1ece5de8fc3a72.exe
Key created	\REGISTRY\MACHINE\Software\Classes\txtfile\shell\open\command	rundll32.exe

Suspicious behavior: EnumeratesProcesses 28 IoCs

pid	Process
4068	85f3b7c77a02ea5e030e8637fc75d13996cbbcd13e6f2eae1e1ece5de8fc3a72.exe
4068	85f3b7c77a02ea5e030e8637fc75d13996cbbcd13e6f2eae1e1ece5de8fc3a72.exe
4068	85f3b7c77a02ea5e030e8637fc75d13996cbbcd13e6f2eae1e1ece5de8fc3a72.exe
4068	85f3b7c77a02ea5e030e8637fc75d13996cbbcd13e6f2eae1e1ece5de8fc3a72.exe
4068	85f3b7c77a02ea5e030e8637fc75d13996cbbcd13e6f2eae1e1ece5de8fc3a72.exe
4068	85f3b7c77a02ea5e030e8637fc75d13996cbbcd13e6f2eae1e1ece5de8fc3a72.exe
4068	85f3b7c77a02ea5e030e8637fc75d13996cbbcd13e6f2eae1e1ece5de8fc3a72.exe
4068	85f3b7c77a02ea5e030e8637fc75d13996cbbcd13e6f2eae1e1ece5de8fc3a72.exe
4068	85f3b7c77a02ea5e030e8637fc75d13996cbbcd13e6f2eae1e1ece5de8fc3a72.exe
4068	85f3b7c77a02ea5e030e8637fc75d13996cbbcd13e6f2eae1e1ece5de8fc3a72.exe
4068	85f3b7c77a02ea5e030e8637fc75d13996cbbcd13e6f2eae1e1ece5de8fc3a72.exe
4068	85f3b7c77a02ea5e030e8637fc75d13996cbbcd13e6f2eae1e1ece5de8fc3a72.exe
4068	85f3b7c77a02ea5e030e8637fc75d13996cbbcd13e6f2eae1e1ece5de8fc3a72.exe
4068	85f3b7c77a02ea5e030e8637fc75d13996cbbcd13e6f2eae1e1ece5de8fc3a72.exe
4068	85f3b7c77a02ea5e030e8637fc75d13996cbbcd13e6f2eae1e1ece5de8fc3a72.exe
4068	85f3b7c77a02ea5e030e8637fc75d13996cbbcd13e6f2eae1e1ece5de8fc3a72.exe
4068	85f3b7c77a02ea5e030e8637fc75d13996cbbcd13e6f2eae1e1ece5de8fc3a72.exe
4068	85f3b7c77a02ea5e030e8637fc75d13996cbbcd13e6f2eae1e1ece5de8fc3a72.exe
4068	85f3b7c77a02ea5e030e8637fc75d13996cbbcd13e6f2eae1e1ece5de8fc3a72.exe
4068	85f3b7c77a02ea5e030e8637fc75d13996cbbcd13e6f2eae1e1ece5de8fc3a72.exe
4068	85f3b7c77a02ea5e030e8637fc75d13996cbbcd13e6f2eae1e1ece5de8fc3a72.exe
4068	85f3b7c77a02ea5e030e8637fc75d13996cbbcd13e6f2eae1e1ece5de8fc3a72.exe
4068	85f3b7c77a02ea5e030e8637fc75d13996cbbcd13e6f2eae1e1ece5de8fc3a72.exe
4068	85f3b7c77a02ea5e030e8637fc75d13996cbbcd13e6f2eae1e1ece5de8fc3a72.exe
4068	85f3b7c77a02ea5e030e8637fc75d13996cbbcd13e6f2eae1e1ece5de8fc3a72.exe
4068	85f3b7c77a02ea5e030e8637fc75d13996cbbcd13e6f2eae1e1ece5de8fc3a72.exe
4068	85f3b7c77a02ea5e030e8637fc75d13996cbbcd13e6f2eae1e1ece5de8fc3a72.exe
4068	85f3b7c77a02ea5e030e8637fc75d13996cbbcd13e6f2eae1e1ece5de8fc3a72.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1440	rundll32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
4068	85f3b7c77a02ea5e030e8637fc75d13996cbbcd13e6f2eae1e1ece5de8fc3a72.exe
1440	rundll32.exe
1440	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4068 wrote to memory of 1440	4068	85f3b7c77a02ea5e030e8637fc75d13996cbbcd13e6f2eae1e1ece5de8fc3a72.exe	86
PID 4068 wrote to memory of 1440	4068	85f3b7c77a02ea5e030e8637fc75d13996cbbcd13e6f2eae1e1ece5de8fc3a72.exe	86
PID 4068 wrote to memory of 1440	4068	85f3b7c77a02ea5e030e8637fc75d13996cbbcd13e6f2eae1e1ece5de8fc3a72.exe	86

C:\Users\Admin\AppData\Local\Temp\85f3b7c77a02ea5e030e8637fc75d13996cbbcd13e6f2eae1e1ece5de8fc3a72.exe
"C:\Users\Admin\AppData\Local\Temp\85f3b7c77a02ea5e030e8637fc75d13996cbbcd13e6f2eae1e1ece5de8fc3a72.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:4068
- 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:1440

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
73KB

MD5
d2c0dd76e05e3ed2106089468b2d65a2

SHA1
642967312de7e370e19515651b6cb460bec6e87e

SHA256
13cd0eb0d1b9065937173ff5e79f8b5088e0690d65e60d3782a491366697d2e3

SHA512
8e9c96fe25347aa869797e0ceba8adf0d74ad34a76a24e4fb9eb23dfdfe521b130802e3b2c8ee303f365b2bce51e70ff7bd211645c0c20b79a7ceba5d0dfc69a

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

Filesize
76KB

MD5
cfba7d5e433dd5adfe27230293b0ff7d

SHA1
da1e70563f6609676b1244c2ca8708ffaff964f3

SHA256
836da27b7f8223dc86d57179269f909a88c6bf99ccb1cbc49038a892bd585732

SHA512
3c1bfb89935e6332fa85a0a1627877eff376ce2c04296c2d77142aeb6e486c7dea821bc2691bab445d561aa7e995a897e16be51cc59ce006681e9f8e09edff66

Download Submit
memory/4068-0-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/4068-13-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads