e3f82cffd383b196e62f075ac7a76ba478dc50d4cdc31a9c32c74c5620e08e43

General

Target

e3f82cffd383b196e62f075ac7a76ba478dc50d4cdc31a9c32c74c5620e08e43.exe
Size

73KB
MD5

17e4eee321b8108529150475333ada90
SHA1

8b0e74239313a5739a535dad468319c10ffa3627
SHA256

e3f82cffd383b196e62f075ac7a76ba478dc50d4cdc31a9c32c74c5620e08e43
SHA512

045532b53a9a118ed83191a10ea3bc0288056998fdf5d97ba261873557879788de717f9981b4add63028c8669bf0098f1f59d7d2302cd17b83da2e006a3ef93a
SSDEEP

768:agO5xRYi+SfSWHHNvvG5bnl/NqNwsKVDstHxYD0p1aXKynF0vQmYZS0HdJnfWOn:RshfSWHHNvoLqNwDDGw02eQmh0HjWOn

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2776	rundll32.exe

Loads dropped DLL 2 IoCs

pid	Process
3020	e3f82cffd383b196e62f075ac7a76ba478dc50d4cdc31a9c32c74c5620e08e43.exe
3020	e3f82cffd383b196e62f075ac7a76ba478dc50d4cdc31a9c32c74c5620e08e43.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	e3f82cffd383b196e62f075ac7a76ba478dc50d4cdc31a9c32c74c5620e08e43.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*"	e3f82cffd383b196e62f075ac7a76ba478dc50d4cdc31a9c32c74c5620e08e43.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	e3f82cffd383b196e62f075ac7a76ba478dc50d4cdc31a9c32c74c5620e08e43.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\notepad¢¬.exe	e3f82cffd383b196e62f075ac7a76ba478dc50d4cdc31a9c32c74c5620e08e43.exe
File created	C:\Windows\SysWOW64\notepad¢¬.exe	e3f82cffd383b196e62f075ac7a76ba478dc50d4cdc31a9c32c74c5620e08e43.exe
File opened for modification	C:\Windows\SysWOW64\¢«.exe	e3f82cffd383b196e62f075ac7a76ba478dc50d4cdc31a9c32c74c5620e08e43.exe
File created	C:\Windows\SysWOW64\¢«.exe	e3f82cffd383b196e62f075ac7a76ba478dc50d4cdc31a9c32c74c5620e08e43.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system\rundll32.exe	e3f82cffd383b196e62f075ac7a76ba478dc50d4cdc31a9c32c74c5620e08e43.exe
File created	C:\Windows\system\rundll32.exe	e3f82cffd383b196e62f075ac7a76ba478dc50d4cdc31a9c32c74c5620e08e43.exe

Modifies registry class 15 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\Software\Classes\txtfile\shell\open\command	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad.exe %1"	e3f82cffd383b196e62f075ac7a76ba478dc50d4cdc31a9c32c74c5620e08e43.exe
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	rundll32.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\MSipv	e3f82cffd383b196e62f075ac7a76ba478dc50d4cdc31a9c32c74c5620e08e43.exe
Key created	\REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command	e3f82cffd383b196e62f075ac7a76ba478dc50d4cdc31a9c32c74c5620e08e43.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*"	e3f82cffd383b196e62f075ac7a76ba478dc50d4cdc31a9c32c74c5620e08e43.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\" %*"	e3f82cffd383b196e62f075ac7a76ba478dc50d4cdc31a9c32c74c5620e08e43.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad¢¬ %1"	e3f82cffd383b196e62f075ac7a76ba478dc50d4cdc31a9c32c74c5620e08e43.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	e3f82cffd383b196e62f075ac7a76ba478dc50d4cdc31a9c32c74c5620e08e43.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainSetup = "1697107603"	rundll32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainUp = "1697107603"	rundll32.exe

Suspicious behavior: EnumeratesProcesses 14 IoCs

pid	Process
3020	e3f82cffd383b196e62f075ac7a76ba478dc50d4cdc31a9c32c74c5620e08e43.exe
3020	e3f82cffd383b196e62f075ac7a76ba478dc50d4cdc31a9c32c74c5620e08e43.exe
3020	e3f82cffd383b196e62f075ac7a76ba478dc50d4cdc31a9c32c74c5620e08e43.exe
3020	e3f82cffd383b196e62f075ac7a76ba478dc50d4cdc31a9c32c74c5620e08e43.exe
3020	e3f82cffd383b196e62f075ac7a76ba478dc50d4cdc31a9c32c74c5620e08e43.exe
3020	e3f82cffd383b196e62f075ac7a76ba478dc50d4cdc31a9c32c74c5620e08e43.exe
3020	e3f82cffd383b196e62f075ac7a76ba478dc50d4cdc31a9c32c74c5620e08e43.exe
3020	e3f82cffd383b196e62f075ac7a76ba478dc50d4cdc31a9c32c74c5620e08e43.exe
3020	e3f82cffd383b196e62f075ac7a76ba478dc50d4cdc31a9c32c74c5620e08e43.exe
3020	e3f82cffd383b196e62f075ac7a76ba478dc50d4cdc31a9c32c74c5620e08e43.exe
3020	e3f82cffd383b196e62f075ac7a76ba478dc50d4cdc31a9c32c74c5620e08e43.exe
3020	e3f82cffd383b196e62f075ac7a76ba478dc50d4cdc31a9c32c74c5620e08e43.exe
3020	e3f82cffd383b196e62f075ac7a76ba478dc50d4cdc31a9c32c74c5620e08e43.exe
3020	e3f82cffd383b196e62f075ac7a76ba478dc50d4cdc31a9c32c74c5620e08e43.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2776	rundll32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
3020	e3f82cffd383b196e62f075ac7a76ba478dc50d4cdc31a9c32c74c5620e08e43.exe
2776	rundll32.exe
2776	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 3020 wrote to memory of 2776	3020	e3f82cffd383b196e62f075ac7a76ba478dc50d4cdc31a9c32c74c5620e08e43.exe	30
PID 3020 wrote to memory of 2776	3020	e3f82cffd383b196e62f075ac7a76ba478dc50d4cdc31a9c32c74c5620e08e43.exe	30
PID 3020 wrote to memory of 2776	3020	e3f82cffd383b196e62f075ac7a76ba478dc50d4cdc31a9c32c74c5620e08e43.exe	30
PID 3020 wrote to memory of 2776	3020	e3f82cffd383b196e62f075ac7a76ba478dc50d4cdc31a9c32c74c5620e08e43.exe	30
PID 3020 wrote to memory of 2776	3020	e3f82cffd383b196e62f075ac7a76ba478dc50d4cdc31a9c32c74c5620e08e43.exe	30
PID 3020 wrote to memory of 2776	3020	e3f82cffd383b196e62f075ac7a76ba478dc50d4cdc31a9c32c74c5620e08e43.exe	30
PID 3020 wrote to memory of 2776	3020	e3f82cffd383b196e62f075ac7a76ba478dc50d4cdc31a9c32c74c5620e08e43.exe	30

C:\Users\Admin\AppData\Local\Temp\e3f82cffd383b196e62f075ac7a76ba478dc50d4cdc31a9c32c74c5620e08e43.exe
"C:\Users\Admin\AppData\Local\Temp\e3f82cffd383b196e62f075ac7a76ba478dc50d4cdc31a9c32c74c5620e08e43.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:3020
- 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:2776

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

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Downloads

C:\Windows\SysWOW64\notepad¢¬.exe

Filesize
84KB

MD5
070a70c63fdedaaf4ab4e39471af379c

SHA1
e93e75833063384a8d7b66ab26fdd22619496e94

SHA256
4fedcd27cf836d5197592ee1169fb0f7074dbe9158e67d36ef6bcded9b32655a

SHA512
7af0f0bf47628a96e1acc020755e50d672d864fb52fb4155fcc488685a7a74bd557b2cce74e937a9eb0d6c128cb859094dc7279381ff77410dd6a18f9d649902

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

Filesize
83KB

MD5
4400a25b010605b1dbf0528635dfcb3d

SHA1
ec7f83892871ab675f9832e82e8629ea12c1b5d0

SHA256
61557c4aa802a4f1fde4797297fb648f3e09b59bd1b8901f779db45472469d17

SHA512
516d780539fea9729a543cd69c3b343ea4a7f95bbd8a457b108ddb218e9b05ccb5f499fb8812b9d7eaa17924f1994766f41ee356daaab16cec6b24e1acc9947b

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

Filesize
83KB

MD5
4400a25b010605b1dbf0528635dfcb3d

SHA1
ec7f83892871ab675f9832e82e8629ea12c1b5d0

SHA256
61557c4aa802a4f1fde4797297fb648f3e09b59bd1b8901f779db45472469d17

SHA512
516d780539fea9729a543cd69c3b343ea4a7f95bbd8a457b108ddb218e9b05ccb5f499fb8812b9d7eaa17924f1994766f41ee356daaab16cec6b24e1acc9947b

Download Submit
\Windows\system\rundll32.exe

Filesize
83KB

MD5
4400a25b010605b1dbf0528635dfcb3d

SHA1
ec7f83892871ab675f9832e82e8629ea12c1b5d0

SHA256
61557c4aa802a4f1fde4797297fb648f3e09b59bd1b8901f779db45472469d17

SHA512
516d780539fea9729a543cd69c3b343ea4a7f95bbd8a457b108ddb218e9b05ccb5f499fb8812b9d7eaa17924f1994766f41ee356daaab16cec6b24e1acc9947b

Download Submit
\Windows\system\rundll32.exe

Filesize
83KB

MD5
4400a25b010605b1dbf0528635dfcb3d

SHA1
ec7f83892871ab675f9832e82e8629ea12c1b5d0

SHA256
61557c4aa802a4f1fde4797297fb648f3e09b59bd1b8901f779db45472469d17

SHA512
516d780539fea9729a543cd69c3b343ea4a7f95bbd8a457b108ddb218e9b05ccb5f499fb8812b9d7eaa17924f1994766f41ee356daaab16cec6b24e1acc9947b

Download Submit
memory/2776-20-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/2776-23-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/3020-0-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/3020-12-0x0000000000340000-0x0000000000356000-memory.dmp

Filesize
88KB

Download
memory/3020-17-0x0000000000340000-0x0000000000356000-memory.dmp

Filesize
88KB

Download
memory/3020-21-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/3020-22-0x0000000000340000-0x0000000000346000-memory.dmp

Filesize
24KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads