3e4dd6a9c96d980f6e6cc7f3ab85296cf7bd5f5eab4a84dac2e779f5af6cd8b5

General

Target

3e4dd6a9c96d980f6e6cc7f3ab85296cf7bd5f5eab4a84dac2e779f5af6cd8b5.exe
Size

79KB
MD5

d502a1c94294114741a358c92976d736
SHA1

0dd191ddb3b84d0b8be57dbc60b2cab26ce3a2ba
SHA256

3e4dd6a9c96d980f6e6cc7f3ab85296cf7bd5f5eab4a84dac2e779f5af6cd8b5
SHA512

9947dadbd9008e8eaff455455c61a1046cd0e74778f8d39fc4b374227eb4a78ac43ad5c5102390f3ed713c0fa4cb6adfbd8092bfa2c86a8f80e91eb188d725e6
SSDEEP

1536:RshfSWHHNvoLqNwDDGw02eQmh0HjWOQVdGU/:GhfxHNIreQm+HiDVdGU/

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2152	rundll32.exe

Loads dropped DLL 2 IoCs

pid	Process
2052	3e4dd6a9c96d980f6e6cc7f3ab85296cf7bd5f5eab4a84dac2e779f5af6cd8b5.exe
2052	3e4dd6a9c96d980f6e6cc7f3ab85296cf7bd5f5eab4a84dac2e779f5af6cd8b5.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	3e4dd6a9c96d980f6e6cc7f3ab85296cf7bd5f5eab4a84dac2e779f5af6cd8b5.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*"	3e4dd6a9c96d980f6e6cc7f3ab85296cf7bd5f5eab4a84dac2e779f5af6cd8b5.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	3e4dd6a9c96d980f6e6cc7f3ab85296cf7bd5f5eab4a84dac2e779f5af6cd8b5.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\notepad¢¬.exe	3e4dd6a9c96d980f6e6cc7f3ab85296cf7bd5f5eab4a84dac2e779f5af6cd8b5.exe
File opened for modification	C:\Windows\SysWOW64\¢«.exe	3e4dd6a9c96d980f6e6cc7f3ab85296cf7bd5f5eab4a84dac2e779f5af6cd8b5.exe
File created	C:\Windows\SysWOW64\¢«.exe	3e4dd6a9c96d980f6e6cc7f3ab85296cf7bd5f5eab4a84dac2e779f5af6cd8b5.exe
File opened for modification	C:\Windows\SysWOW64\notepad¢¬.exe	3e4dd6a9c96d980f6e6cc7f3ab85296cf7bd5f5eab4a84dac2e779f5af6cd8b5.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system\rundll32.exe	3e4dd6a9c96d980f6e6cc7f3ab85296cf7bd5f5eab4a84dac2e779f5af6cd8b5.exe
File created	C:\Windows\system\rundll32.exe	3e4dd6a9c96d980f6e6cc7f3ab85296cf7bd5f5eab4a84dac2e779f5af6cd8b5.exe

Modifies registry class 15 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad¢¬ %1"	3e4dd6a9c96d980f6e6cc7f3ab85296cf7bd5f5eab4a84dac2e779f5af6cd8b5.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainVer = "506"	rundll32.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
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	3e4dd6a9c96d980f6e6cc7f3ab85296cf7bd5f5eab4a84dac2e779f5af6cd8b5.exe
Key created	\REGISTRY\MACHINE\Software\Classes\txtfile\shell\open\command	3e4dd6a9c96d980f6e6cc7f3ab85296cf7bd5f5eab4a84dac2e779f5af6cd8b5.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad.exe %1"	3e4dd6a9c96d980f6e6cc7f3ab85296cf7bd5f5eab4a84dac2e779f5af6cd8b5.exe
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	rundll32.exe
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	3e4dd6a9c96d980f6e6cc7f3ab85296cf7bd5f5eab4a84dac2e779f5af6cd8b5.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	3e4dd6a9c96d980f6e6cc7f3ab85296cf7bd5f5eab4a84dac2e779f5af6cd8b5.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainSetup = "1720795562"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*"	3e4dd6a9c96d980f6e6cc7f3ab85296cf7bd5f5eab4a84dac2e779f5af6cd8b5.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainUp = "1720795562"	rundll32.exe

Suspicious behavior: EnumeratesProcesses 14 IoCs

pid	Process
2052	3e4dd6a9c96d980f6e6cc7f3ab85296cf7bd5f5eab4a84dac2e779f5af6cd8b5.exe
2052	3e4dd6a9c96d980f6e6cc7f3ab85296cf7bd5f5eab4a84dac2e779f5af6cd8b5.exe
2052	3e4dd6a9c96d980f6e6cc7f3ab85296cf7bd5f5eab4a84dac2e779f5af6cd8b5.exe
2052	3e4dd6a9c96d980f6e6cc7f3ab85296cf7bd5f5eab4a84dac2e779f5af6cd8b5.exe
2052	3e4dd6a9c96d980f6e6cc7f3ab85296cf7bd5f5eab4a84dac2e779f5af6cd8b5.exe
2052	3e4dd6a9c96d980f6e6cc7f3ab85296cf7bd5f5eab4a84dac2e779f5af6cd8b5.exe
2052	3e4dd6a9c96d980f6e6cc7f3ab85296cf7bd5f5eab4a84dac2e779f5af6cd8b5.exe
2052	3e4dd6a9c96d980f6e6cc7f3ab85296cf7bd5f5eab4a84dac2e779f5af6cd8b5.exe
2052	3e4dd6a9c96d980f6e6cc7f3ab85296cf7bd5f5eab4a84dac2e779f5af6cd8b5.exe
2052	3e4dd6a9c96d980f6e6cc7f3ab85296cf7bd5f5eab4a84dac2e779f5af6cd8b5.exe
2052	3e4dd6a9c96d980f6e6cc7f3ab85296cf7bd5f5eab4a84dac2e779f5af6cd8b5.exe
2052	3e4dd6a9c96d980f6e6cc7f3ab85296cf7bd5f5eab4a84dac2e779f5af6cd8b5.exe
2052	3e4dd6a9c96d980f6e6cc7f3ab85296cf7bd5f5eab4a84dac2e779f5af6cd8b5.exe
2052	3e4dd6a9c96d980f6e6cc7f3ab85296cf7bd5f5eab4a84dac2e779f5af6cd8b5.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2152	rundll32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
2052	3e4dd6a9c96d980f6e6cc7f3ab85296cf7bd5f5eab4a84dac2e779f5af6cd8b5.exe
2152	rundll32.exe
2152	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2052 wrote to memory of 2152	2052	3e4dd6a9c96d980f6e6cc7f3ab85296cf7bd5f5eab4a84dac2e779f5af6cd8b5.exe	30
PID 2052 wrote to memory of 2152	2052	3e4dd6a9c96d980f6e6cc7f3ab85296cf7bd5f5eab4a84dac2e779f5af6cd8b5.exe	30
PID 2052 wrote to memory of 2152	2052	3e4dd6a9c96d980f6e6cc7f3ab85296cf7bd5f5eab4a84dac2e779f5af6cd8b5.exe	30
PID 2052 wrote to memory of 2152	2052	3e4dd6a9c96d980f6e6cc7f3ab85296cf7bd5f5eab4a84dac2e779f5af6cd8b5.exe	30
PID 2052 wrote to memory of 2152	2052	3e4dd6a9c96d980f6e6cc7f3ab85296cf7bd5f5eab4a84dac2e779f5af6cd8b5.exe	30
PID 2052 wrote to memory of 2152	2052	3e4dd6a9c96d980f6e6cc7f3ab85296cf7bd5f5eab4a84dac2e779f5af6cd8b5.exe	30
PID 2052 wrote to memory of 2152	2052	3e4dd6a9c96d980f6e6cc7f3ab85296cf7bd5f5eab4a84dac2e779f5af6cd8b5.exe	30

C:\Users\Admin\AppData\Local\Temp\3e4dd6a9c96d980f6e6cc7f3ab85296cf7bd5f5eab4a84dac2e779f5af6cd8b5.exe
"C:\Users\Admin\AppData\Local\Temp\3e4dd6a9c96d980f6e6cc7f3ab85296cf7bd5f5eab4a84dac2e779f5af6cd8b5.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:2052
- 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:2152

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
75KB

MD5
2222c1c6b78d8d0ad6c4e3d7e4032e20

SHA1
67bb52d5cd51c6d0a836645c16e38bfd95e2f9f9

SHA256
c123131dbfa3388f19b5757afb65e196b70ce252ecb53f9c9b462ae46cb1a373

SHA512
24dff896cf5a4ce6fe688c0f63286e7223c9526e0294ac7c9b16744ce0e84c448f0ff9dff17b52813f89d9c913be900777196caa25f7ba30ed85660d2d42a59b

Download Submit
\Windows\system\rundll32.exe

Filesize
85KB

MD5
84e5930063dc51bf253ca3765c71ab4b

SHA1
2dc007fad2923175481f540feff4805ddc9bab24

SHA256
6e546f593fd20ab4070d686ba6e41ee8993827624e72d76b8968daa75b038217

SHA512
5151ef08c69c074a21ce696a91b93a7a6fff199e2d81c17b16cb4132605ae902a65ca4261d5b7c50678a7372fec7d3f6f7533af1e8e7b8d8fee0d9d37f0ff967

Download Submit
memory/2052-0-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/2052-12-0x0000000000270000-0x0000000000286000-memory.dmp

Filesize
88KB

Download
memory/2052-19-0x0000000000270000-0x0000000000286000-memory.dmp

Filesize
88KB

Download
memory/2052-21-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/2052-22-0x0000000000270000-0x0000000000272000-memory.dmp

Filesize
8KB

Download
memory/2152-20-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads