4b4aa59b9ec5d54886386134231124c7924c00ac6c635bbcfac46e2e58be7cff

General

Target

4b4aa59b9ec5d54886386134231124c7924c00ac6c635bbcfac46e2e58be7cff.exe
Size

27KB
MD5

72b88fb1722a88028393f1281a90a021
SHA1

776fe0024d240e62b35cf9ec680db1cd422c82a4
SHA256

4b4aa59b9ec5d54886386134231124c7924c00ac6c635bbcfac46e2e58be7cff
SHA512

8e5ee9a340729b1873b7dceff350808c0f0bd91c6b7560a80b4d5a1eb91368b5673e201bdca75de4735f153a55d8aed7d3ef0d7c5f09f61177e6d260782f92cb
SSDEEP

768:PVEHJqjHyGvwFylDpulVSQJrE/2QmlCYZUTOgM:PH2nylslwHCCLK

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2192	rundll32.exe

Loads dropped DLL 2 IoCs

pid	Process
1152	4b4aa59b9ec5d54886386134231124c7924c00ac6c635bbcfac46e2e58be7cff.exe
1152	4b4aa59b9ec5d54886386134231124c7924c00ac6c635bbcfac46e2e58be7cff.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	4b4aa59b9ec5d54886386134231124c7924c00ac6c635bbcfac46e2e58be7cff.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*"	4b4aa59b9ec5d54886386134231124c7924c00ac6c635bbcfac46e2e58be7cff.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	4b4aa59b9ec5d54886386134231124c7924c00ac6c635bbcfac46e2e58be7cff.exe
Key created	\REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command	rundll32.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\notepad¢¬.exe	4b4aa59b9ec5d54886386134231124c7924c00ac6c635bbcfac46e2e58be7cff.exe
File opened for modification	C:\Windows\SysWOW64\¢«.exe	4b4aa59b9ec5d54886386134231124c7924c00ac6c635bbcfac46e2e58be7cff.exe
File created	C:\Windows\SysWOW64\¢«.exe	4b4aa59b9ec5d54886386134231124c7924c00ac6c635bbcfac46e2e58be7cff.exe
File opened for modification	C:\Windows\SysWOW64\notepad¢¬.exe	4b4aa59b9ec5d54886386134231124c7924c00ac6c635bbcfac46e2e58be7cff.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\system\rundll32.exe	4b4aa59b9ec5d54886386134231124c7924c00ac6c635bbcfac46e2e58be7cff.exe
File opened for modification	C:\Windows\system\rundll32.exe	4b4aa59b9ec5d54886386134231124c7924c00ac6c635bbcfac46e2e58be7cff.exe

Modifies registry class 15 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*"	4b4aa59b9ec5d54886386134231124c7924c00ac6c635bbcfac46e2e58be7cff.exe
Key created	\REGISTRY\MACHINE\Software\Classes\txtfile\shell\open\command	4b4aa59b9ec5d54886386134231124c7924c00ac6c635bbcfac46e2e58be7cff.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad¢¬ %1"	4b4aa59b9ec5d54886386134231124c7924c00ac6c635bbcfac46e2e58be7cff.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad.exe %1"	4b4aa59b9ec5d54886386134231124c7924c00ac6c635bbcfac46e2e58be7cff.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainUp = "1716498693"	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\exefile\shell\open\command	4b4aa59b9ec5d54886386134231124c7924c00ac6c635bbcfac46e2e58be7cff.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	4b4aa59b9ec5d54886386134231124c7924c00ac6c635bbcfac46e2e58be7cff.exe
Key created	\REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command	rundll32.exe
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	4b4aa59b9ec5d54886386134231124c7924c00ac6c635bbcfac46e2e58be7cff.exe
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	rundll32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainSetup = "1716498693"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	rundll32.exe

Suspicious behavior: EnumeratesProcesses 14 IoCs

pid	Process
1152	4b4aa59b9ec5d54886386134231124c7924c00ac6c635bbcfac46e2e58be7cff.exe
1152	4b4aa59b9ec5d54886386134231124c7924c00ac6c635bbcfac46e2e58be7cff.exe
1152	4b4aa59b9ec5d54886386134231124c7924c00ac6c635bbcfac46e2e58be7cff.exe
1152	4b4aa59b9ec5d54886386134231124c7924c00ac6c635bbcfac46e2e58be7cff.exe
1152	4b4aa59b9ec5d54886386134231124c7924c00ac6c635bbcfac46e2e58be7cff.exe
1152	4b4aa59b9ec5d54886386134231124c7924c00ac6c635bbcfac46e2e58be7cff.exe
1152	4b4aa59b9ec5d54886386134231124c7924c00ac6c635bbcfac46e2e58be7cff.exe
1152	4b4aa59b9ec5d54886386134231124c7924c00ac6c635bbcfac46e2e58be7cff.exe
1152	4b4aa59b9ec5d54886386134231124c7924c00ac6c635bbcfac46e2e58be7cff.exe
1152	4b4aa59b9ec5d54886386134231124c7924c00ac6c635bbcfac46e2e58be7cff.exe
1152	4b4aa59b9ec5d54886386134231124c7924c00ac6c635bbcfac46e2e58be7cff.exe
1152	4b4aa59b9ec5d54886386134231124c7924c00ac6c635bbcfac46e2e58be7cff.exe
1152	4b4aa59b9ec5d54886386134231124c7924c00ac6c635bbcfac46e2e58be7cff.exe
1152	4b4aa59b9ec5d54886386134231124c7924c00ac6c635bbcfac46e2e58be7cff.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2192	rundll32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
1152	4b4aa59b9ec5d54886386134231124c7924c00ac6c635bbcfac46e2e58be7cff.exe
2192	rundll32.exe
2192	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1152 wrote to memory of 2192	1152	4b4aa59b9ec5d54886386134231124c7924c00ac6c635bbcfac46e2e58be7cff.exe	28
PID 1152 wrote to memory of 2192	1152	4b4aa59b9ec5d54886386134231124c7924c00ac6c635bbcfac46e2e58be7cff.exe	28
PID 1152 wrote to memory of 2192	1152	4b4aa59b9ec5d54886386134231124c7924c00ac6c635bbcfac46e2e58be7cff.exe	28
PID 1152 wrote to memory of 2192	1152	4b4aa59b9ec5d54886386134231124c7924c00ac6c635bbcfac46e2e58be7cff.exe	28
PID 1152 wrote to memory of 2192	1152	4b4aa59b9ec5d54886386134231124c7924c00ac6c635bbcfac46e2e58be7cff.exe	28
PID 1152 wrote to memory of 2192	1152	4b4aa59b9ec5d54886386134231124c7924c00ac6c635bbcfac46e2e58be7cff.exe	28
PID 1152 wrote to memory of 2192	1152	4b4aa59b9ec5d54886386134231124c7924c00ac6c635bbcfac46e2e58be7cff.exe	28

C:\Users\Admin\AppData\Local\Temp\4b4aa59b9ec5d54886386134231124c7924c00ac6c635bbcfac46e2e58be7cff.exe
"C:\Users\Admin\AppData\Local\Temp\4b4aa59b9ec5d54886386134231124c7924c00ac6c635bbcfac46e2e58be7cff.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:1152
- 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:2192

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
28KB

MD5
d3229b3c7d72ddb8f82ec92b0d4f3d9c

SHA1
70de99e845291fe24e9c526e57fdd2a1eff502c2

SHA256
0f1e2b4e3fa40444f4dd8b36ccda55950d50631a9db5ad3c6b52119c1b6c9de3

SHA512
007aed6a0efeb9716b28add961916b546857f9bdf38c5e1079791bb8a6f232c84beaba8fef7d29adf82b8405b8ba0cbe641bb00bf2cc6900e75fe5ed398544d4

Download Submit
\Windows\system\rundll32.exe

Filesize
28KB

MD5
312109b68c3610dd2c5c299aa31362bb

SHA1
16531ab01470516e8d7ff5ee6278079da63fcba3

SHA256
19d5236965125033a7afecbdca30c4eb7eb8f7d828818804bc1da5d2c531661a

SHA512
79ca337bd2f6e4bb2bca91bc254c1fb9ef7ed82a2b646cbb87e2928ae5401bf7cfc2640e51fe176be9a85f5c1f5f47f656030605a8b152b64cef2532cd0a373a

Download Submit
memory/1152-0-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1152-12-0x0000000000390000-0x00000000003A5000-memory.dmp

Filesize
84KB

Download
memory/1152-18-0x0000000000390000-0x00000000003A5000-memory.dmp

Filesize
84KB

Download
memory/1152-21-0x0000000000390000-0x0000000000396000-memory.dmp

Filesize
24KB

Download
memory/1152-20-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2192-26-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2192-24-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2192-25-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2192-22-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2192-27-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2192-28-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2192-29-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2192-30-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2192-31-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2192-32-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2192-33-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2192-34-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2192-35-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads