34261c51fb49b682fb029322c3648e8a8812265c0764d3589c0bee8baedf41e1

General

Target

34261c51fb49b682fb029322c3648e8a8812265c0764d3589c0bee8baedf41e1.exe
Size

74KB
MD5

b88e25ea1f5d0ac2427bda18d8a320e5
SHA1

dbcc0ac9be8aceb50b9d9dc6059c247886759904
SHA256

34261c51fb49b682fb029322c3648e8a8812265c0764d3589c0bee8baedf41e1
SHA512

2f12c777c5117c8c627bd13c7963392deccefee7283b73f1bb8860e4ed002a379386c67fd69d2f748f34a9a59f46bfc26a7ef0b124bc1a874abcef6878774673
SSDEEP

768:agO5xRYi+SfSWHHNvvG5bnl/NqNwsKVDstHxYD0p1aXKynF0vQmYZS0HdJnfWOY:RshfSWHHNvoLqNwDDGw02eQmh0HjWOY

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2812	rundll32.exe

Loads dropped DLL 2 IoCs

pid	Process
2988	34261c51fb49b682fb029322c3648e8a8812265c0764d3589c0bee8baedf41e1.exe
2988	34261c51fb49b682fb029322c3648e8a8812265c0764d3589c0bee8baedf41e1.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	34261c51fb49b682fb029322c3648e8a8812265c0764d3589c0bee8baedf41e1.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*"	34261c51fb49b682fb029322c3648e8a8812265c0764d3589c0bee8baedf41e1.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	34261c51fb49b682fb029322c3648e8a8812265c0764d3589c0bee8baedf41e1.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	34261c51fb49b682fb029322c3648e8a8812265c0764d3589c0bee8baedf41e1.exe
File created	C:\Windows\SysWOW64\¢«.exe	34261c51fb49b682fb029322c3648e8a8812265c0764d3589c0bee8baedf41e1.exe
File opened for modification	C:\Windows\SysWOW64\notepad¢¬.exe	34261c51fb49b682fb029322c3648e8a8812265c0764d3589c0bee8baedf41e1.exe
File created	C:\Windows\SysWOW64\notepad¢¬.exe	34261c51fb49b682fb029322c3648e8a8812265c0764d3589c0bee8baedf41e1.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system\rundll32.exe	34261c51fb49b682fb029322c3648e8a8812265c0764d3589c0bee8baedf41e1.exe
File created	C:\Windows\system\rundll32.exe	34261c51fb49b682fb029322c3648e8a8812265c0764d3589c0bee8baedf41e1.exe

Modifies registry class 15 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command	rundll32.exe
Key created	\REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command	34261c51fb49b682fb029322c3648e8a8812265c0764d3589c0bee8baedf41e1.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*"	34261c51fb49b682fb029322c3648e8a8812265c0764d3589c0bee8baedf41e1.exe
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	rundll32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainUp = "1718144979"	rundll32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainVer = "506"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad¢¬ %1"	34261c51fb49b682fb029322c3648e8a8812265c0764d3589c0bee8baedf41e1.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	rundll32.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\MSipv	34261c51fb49b682fb029322c3648e8a8812265c0764d3589c0bee8baedf41e1.exe
Key created	\REGISTRY\MACHINE\Software\Classes\txtfile\shell\open\command	34261c51fb49b682fb029322c3648e8a8812265c0764d3589c0bee8baedf41e1.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad.exe %1"	34261c51fb49b682fb029322c3648e8a8812265c0764d3589c0bee8baedf41e1.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	34261c51fb49b682fb029322c3648e8a8812265c0764d3589c0bee8baedf41e1.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainSetup = "1718144979"	rundll32.exe

Suspicious behavior: EnumeratesProcesses 14 IoCs

pid	Process
2988	34261c51fb49b682fb029322c3648e8a8812265c0764d3589c0bee8baedf41e1.exe
2988	34261c51fb49b682fb029322c3648e8a8812265c0764d3589c0bee8baedf41e1.exe
2988	34261c51fb49b682fb029322c3648e8a8812265c0764d3589c0bee8baedf41e1.exe
2988	34261c51fb49b682fb029322c3648e8a8812265c0764d3589c0bee8baedf41e1.exe
2988	34261c51fb49b682fb029322c3648e8a8812265c0764d3589c0bee8baedf41e1.exe
2988	34261c51fb49b682fb029322c3648e8a8812265c0764d3589c0bee8baedf41e1.exe
2988	34261c51fb49b682fb029322c3648e8a8812265c0764d3589c0bee8baedf41e1.exe
2988	34261c51fb49b682fb029322c3648e8a8812265c0764d3589c0bee8baedf41e1.exe
2988	34261c51fb49b682fb029322c3648e8a8812265c0764d3589c0bee8baedf41e1.exe
2988	34261c51fb49b682fb029322c3648e8a8812265c0764d3589c0bee8baedf41e1.exe
2988	34261c51fb49b682fb029322c3648e8a8812265c0764d3589c0bee8baedf41e1.exe
2988	34261c51fb49b682fb029322c3648e8a8812265c0764d3589c0bee8baedf41e1.exe
2988	34261c51fb49b682fb029322c3648e8a8812265c0764d3589c0bee8baedf41e1.exe
2988	34261c51fb49b682fb029322c3648e8a8812265c0764d3589c0bee8baedf41e1.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2812	rundll32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
2988	34261c51fb49b682fb029322c3648e8a8812265c0764d3589c0bee8baedf41e1.exe
2812	rundll32.exe
2812	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2988 wrote to memory of 2812	2988	34261c51fb49b682fb029322c3648e8a8812265c0764d3589c0bee8baedf41e1.exe	28
PID 2988 wrote to memory of 2812	2988	34261c51fb49b682fb029322c3648e8a8812265c0764d3589c0bee8baedf41e1.exe	28
PID 2988 wrote to memory of 2812	2988	34261c51fb49b682fb029322c3648e8a8812265c0764d3589c0bee8baedf41e1.exe	28
PID 2988 wrote to memory of 2812	2988	34261c51fb49b682fb029322c3648e8a8812265c0764d3589c0bee8baedf41e1.exe	28
PID 2988 wrote to memory of 2812	2988	34261c51fb49b682fb029322c3648e8a8812265c0764d3589c0bee8baedf41e1.exe	28
PID 2988 wrote to memory of 2812	2988	34261c51fb49b682fb029322c3648e8a8812265c0764d3589c0bee8baedf41e1.exe	28
PID 2988 wrote to memory of 2812	2988	34261c51fb49b682fb029322c3648e8a8812265c0764d3589c0bee8baedf41e1.exe	28

C:\Users\Admin\AppData\Local\Temp\34261c51fb49b682fb029322c3648e8a8812265c0764d3589c0bee8baedf41e1.exe
"C:\Users\Admin\AppData\Local\Temp\34261c51fb49b682fb029322c3648e8a8812265c0764d3589c0bee8baedf41e1.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:2988
- 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:2812

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
74KB

MD5
089a63d720e7443b5f42349c44b0ed86

SHA1
5f3f1035e13e57bcfb3ad88d7ae118019f7b0133

SHA256
4e5c9e1601fbd102c77426b23537a2f66098f247001fcbda77a104be1d38e52e

SHA512
08174739033ca5ddf722e6efc81583e983a6c34110a1eea43fdb611be9f3fc0695b7410bfe7f39cd0f16a0324fded8a7b4db535a7cb68911f8c674405ff2eb7b

Download Submit
\Windows\system\rundll32.exe

Filesize
80KB

MD5
9f61489586976de47244d7d93285c80e

SHA1
938caa11892b1575b244bf56dfb8f7c915901cdb

SHA256
81aaf55435bba7f43eebc7d2309be19e30b312f669f81b9022808d16fbd9681e

SHA512
3a9e4ec44fe7da46536ea4f7457bd22c45a16136097b3139284f46010b4064aee0381a9b484e134d96c578f5f65bab26787298cad04331b20fe688162ab87a67

Download Submit
memory/2812-19-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/2988-0-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/2988-16-0x0000000000260000-0x0000000000276000-memory.dmp

Filesize
88KB

Download
memory/2988-18-0x0000000000260000-0x0000000000276000-memory.dmp

Filesize
88KB

Download
memory/2988-21-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/2988-22-0x0000000000260000-0x0000000000262000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads