d37ac64fc8e176d4c2ac0b0b83699746c3a9d7f82d9515f2b3f28ec69df464fa

General

Target

d37ac64fc8e176d4c2ac0b0b83699746c3a9d7f82d9515f2b3f28ec69df464fa.exe
Size

74KB
MD5

9afab35e020ddd49577409ba12890c68
SHA1

efd7465f4da610804160f7a8314c6661d1199d36
SHA256

d37ac64fc8e176d4c2ac0b0b83699746c3a9d7f82d9515f2b3f28ec69df464fa
SHA512

db64c83f352843af0b198d5de529a888197fce7e7d515ce1795c1d31fdcdd125f1d2dd8a137673951abeb21d1cbb7113595f4116f894e8f5bf8b4dcd9402af45
SSDEEP

1536:RshfSWHHNvoLqNwDDGw02eQmh0HjWOCab:GhfxHNIreQm+Hipab

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2304	rundll32.exe

Loads dropped DLL 2 IoCs

pid	Process
1612	d37ac64fc8e176d4c2ac0b0b83699746c3a9d7f82d9515f2b3f28ec69df464fa.exe
1612	d37ac64fc8e176d4c2ac0b0b83699746c3a9d7f82d9515f2b3f28ec69df464fa.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	d37ac64fc8e176d4c2ac0b0b83699746c3a9d7f82d9515f2b3f28ec69df464fa.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*"	d37ac64fc8e176d4c2ac0b0b83699746c3a9d7f82d9515f2b3f28ec69df464fa.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	d37ac64fc8e176d4c2ac0b0b83699746c3a9d7f82d9515f2b3f28ec69df464fa.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\¢«.exe	d37ac64fc8e176d4c2ac0b0b83699746c3a9d7f82d9515f2b3f28ec69df464fa.exe
File created	C:\Windows\SysWOW64\¢«.exe	d37ac64fc8e176d4c2ac0b0b83699746c3a9d7f82d9515f2b3f28ec69df464fa.exe
File opened for modification	C:\Windows\SysWOW64\notepad¢¬.exe	d37ac64fc8e176d4c2ac0b0b83699746c3a9d7f82d9515f2b3f28ec69df464fa.exe
File created	C:\Windows\SysWOW64\notepad¢¬.exe	d37ac64fc8e176d4c2ac0b0b83699746c3a9d7f82d9515f2b3f28ec69df464fa.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system\rundll32.exe	d37ac64fc8e176d4c2ac0b0b83699746c3a9d7f82d9515f2b3f28ec69df464fa.exe
File created	C:\Windows\system\rundll32.exe	d37ac64fc8e176d4c2ac0b0b83699746c3a9d7f82d9515f2b3f28ec69df464fa.exe

Modifies registry class 15 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command	d37ac64fc8e176d4c2ac0b0b83699746c3a9d7f82d9515f2b3f28ec69df464fa.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*"	d37ac64fc8e176d4c2ac0b0b83699746c3a9d7f82d9515f2b3f28ec69df464fa.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\" %*"	rundll32.exe
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	d37ac64fc8e176d4c2ac0b0b83699746c3a9d7f82d9515f2b3f28ec69df464fa.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad¢¬ %1"	d37ac64fc8e176d4c2ac0b0b83699746c3a9d7f82d9515f2b3f28ec69df464fa.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainUp = "1718002323"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	d37ac64fc8e176d4c2ac0b0b83699746c3a9d7f82d9515f2b3f28ec69df464fa.exe
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	rundll32.exe
Key created	\REGISTRY\MACHINE\Software\Classes\txtfile\shell\open\command	d37ac64fc8e176d4c2ac0b0b83699746c3a9d7f82d9515f2b3f28ec69df464fa.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad.exe %1"	d37ac64fc8e176d4c2ac0b0b83699746c3a9d7f82d9515f2b3f28ec69df464fa.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainSetup = "1718002323"	rundll32.exe
Key created	\REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command	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

Suspicious behavior: EnumeratesProcesses 14 IoCs

pid	Process
1612	d37ac64fc8e176d4c2ac0b0b83699746c3a9d7f82d9515f2b3f28ec69df464fa.exe
1612	d37ac64fc8e176d4c2ac0b0b83699746c3a9d7f82d9515f2b3f28ec69df464fa.exe
1612	d37ac64fc8e176d4c2ac0b0b83699746c3a9d7f82d9515f2b3f28ec69df464fa.exe
1612	d37ac64fc8e176d4c2ac0b0b83699746c3a9d7f82d9515f2b3f28ec69df464fa.exe
1612	d37ac64fc8e176d4c2ac0b0b83699746c3a9d7f82d9515f2b3f28ec69df464fa.exe
1612	d37ac64fc8e176d4c2ac0b0b83699746c3a9d7f82d9515f2b3f28ec69df464fa.exe
1612	d37ac64fc8e176d4c2ac0b0b83699746c3a9d7f82d9515f2b3f28ec69df464fa.exe
1612	d37ac64fc8e176d4c2ac0b0b83699746c3a9d7f82d9515f2b3f28ec69df464fa.exe
1612	d37ac64fc8e176d4c2ac0b0b83699746c3a9d7f82d9515f2b3f28ec69df464fa.exe
1612	d37ac64fc8e176d4c2ac0b0b83699746c3a9d7f82d9515f2b3f28ec69df464fa.exe
1612	d37ac64fc8e176d4c2ac0b0b83699746c3a9d7f82d9515f2b3f28ec69df464fa.exe
1612	d37ac64fc8e176d4c2ac0b0b83699746c3a9d7f82d9515f2b3f28ec69df464fa.exe
1612	d37ac64fc8e176d4c2ac0b0b83699746c3a9d7f82d9515f2b3f28ec69df464fa.exe
1612	d37ac64fc8e176d4c2ac0b0b83699746c3a9d7f82d9515f2b3f28ec69df464fa.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2304	rundll32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
1612	d37ac64fc8e176d4c2ac0b0b83699746c3a9d7f82d9515f2b3f28ec69df464fa.exe
2304	rundll32.exe
2304	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1612 wrote to memory of 2304	1612	d37ac64fc8e176d4c2ac0b0b83699746c3a9d7f82d9515f2b3f28ec69df464fa.exe	28
PID 1612 wrote to memory of 2304	1612	d37ac64fc8e176d4c2ac0b0b83699746c3a9d7f82d9515f2b3f28ec69df464fa.exe	28
PID 1612 wrote to memory of 2304	1612	d37ac64fc8e176d4c2ac0b0b83699746c3a9d7f82d9515f2b3f28ec69df464fa.exe	28
PID 1612 wrote to memory of 2304	1612	d37ac64fc8e176d4c2ac0b0b83699746c3a9d7f82d9515f2b3f28ec69df464fa.exe	28
PID 1612 wrote to memory of 2304	1612	d37ac64fc8e176d4c2ac0b0b83699746c3a9d7f82d9515f2b3f28ec69df464fa.exe	28
PID 1612 wrote to memory of 2304	1612	d37ac64fc8e176d4c2ac0b0b83699746c3a9d7f82d9515f2b3f28ec69df464fa.exe	28
PID 1612 wrote to memory of 2304	1612	d37ac64fc8e176d4c2ac0b0b83699746c3a9d7f82d9515f2b3f28ec69df464fa.exe	28

C:\Users\Admin\AppData\Local\Temp\d37ac64fc8e176d4c2ac0b0b83699746c3a9d7f82d9515f2b3f28ec69df464fa.exe
"C:\Users\Admin\AppData\Local\Temp\d37ac64fc8e176d4c2ac0b0b83699746c3a9d7f82d9515f2b3f28ec69df464fa.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:1612
- 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:2304

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
77KB

MD5
18123af2f265dc0b4e513024da9506de

SHA1
33958a3749f6e18d1d9bbd18f4b72f93511c1428

SHA256
14d9b1dc02e39a2603bfe8103e1748fb0609c8034095275299b333313e38c9d6

SHA512
7b8d9095c127c84cb81b3f35ee3785d53624f9536407d519aaa13606a89867e85419485ad85218d90e0d0e4457e3802e6e8b169a6d4f1489c8758ba9d7f16588

Download Submit
\Windows\system\rundll32.exe

Filesize
78KB

MD5
63bdfa5e3ccd2384933065bcd488455e

SHA1
dae1432e26035a0ebbe9a2e8338a8bfe39de93a8

SHA256
bc26b20588bc264db5451b1ce63941b901563452a3a2c25c841371afbba87970

SHA512
451d5987183b3686f5c90e2bdcf96eaae8e7e1fbbd53583be2d2206625811303a0a791e744e34d2f609e45ab3f8ed93b8a2ed71a1b1a538e75de06e0d48d6c16

Download Submit
memory/1612-0-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/1612-15-0x00000000002E0000-0x00000000002F6000-memory.dmp

Filesize
88KB

Download
memory/1612-17-0x00000000002E0000-0x00000000002F6000-memory.dmp

Filesize
88KB

Download
memory/1612-21-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/1612-22-0x00000000002E0000-0x00000000002E2000-memory.dmp

Filesize
8KB

Download
memory/2304-20-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads