40bc9fc040b2875e27bf12a47cbdc6158ed7d06873cdaecaf049fe1ce30ef738

Analysis

max time kernel
147s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
06-11-2022 14:54

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General

Target

40bc9fc040b2875e27bf12a47cbdc6158ed7d06873cdaecaf049fe1ce30ef738.exe
Size

876KB
MD5

073c363e97ac4f669852ea0ce0e759c9
SHA1

15deadfa2a069cf9ea3df5662ed618bdb53d0a34
SHA256

40bc9fc040b2875e27bf12a47cbdc6158ed7d06873cdaecaf049fe1ce30ef738
SHA512

d5de489d5cd892c5e3b4fc8d014dcfb958ecd3ce7039e2a7f077fce2f336ece61815ae4158262159b4e9799b2cfb2d265eded0994466075f14968d9638f14cfd
SSDEEP

24576:LUcqJZa3mbi/QMX1al9drtSLhsLoTRNg4vsKtf3:LoJQ3mbBN1edT/Jtv

Score

8^/10

persistence

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
424	Coffin.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Windows\CurrentVersion\RunOnce	40bc9fc040b2875e27bf12a47cbdc6158ed7d06873cdaecaf049fe1ce30ef738.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\RunOnce\wextract_cleanup0 = "rundll32.exe C:\\Windows\\system32\\advpack.dll,DelNodeRunDLL32 \"C:\\Users\\Admin\\AppData\\Local\\Temp\\IXP000.TMP\\\""	40bc9fc040b2875e27bf12a47cbdc6158ed7d06873cdaecaf049fe1ce30ef738.exe

Drops file in System32 directory 6 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\ADVAPI32.dll	40bc9fc040b2875e27bf12a47cbdc6158ed7d06873cdaecaf049fe1ce30ef738.exe
File created	C:\Windows\SysWOW64\ADVAPI32.dll	40bc9fc040b2875e27bf12a47cbdc6158ed7d06873cdaecaf049fe1ce30ef738.exe
File opened for modification	C:\Windows\SysWOW64\COMCTL32.dll	40bc9fc040b2875e27bf12a47cbdc6158ed7d06873cdaecaf049fe1ce30ef738.exe
File created	C:\Windows\SysWOW64\COMCTL32.dll	40bc9fc040b2875e27bf12a47cbdc6158ed7d06873cdaecaf049fe1ce30ef738.exe
File opened for modification	C:\Windows\SysWOW64\VERSION.dll	40bc9fc040b2875e27bf12a47cbdc6158ed7d06873cdaecaf049fe1ce30ef738.exe
File created	C:\Windows\SysWOW64\VERSION.dll	40bc9fc040b2875e27bf12a47cbdc6158ed7d06873cdaecaf049fe1ce30ef738.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3056	424	WerFault.exe	80

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4516 wrote to memory of 424	4516	40bc9fc040b2875e27bf12a47cbdc6158ed7d06873cdaecaf049fe1ce30ef738.exe	80
PID 4516 wrote to memory of 424	4516	40bc9fc040b2875e27bf12a47cbdc6158ed7d06873cdaecaf049fe1ce30ef738.exe	80
PID 4516 wrote to memory of 424	4516	40bc9fc040b2875e27bf12a47cbdc6158ed7d06873cdaecaf049fe1ce30ef738.exe	80

C:\Users\Admin\AppData\Local\Temp\40bc9fc040b2875e27bf12a47cbdc6158ed7d06873cdaecaf049fe1ce30ef738.exe
"C:\Users\Admin\AppData\Local\Temp\40bc9fc040b2875e27bf12a47cbdc6158ed7d06873cdaecaf049fe1ce30ef738.exe"
1⤵
- Adds Run key to start application
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
PID:4516
- C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\Coffin.exe
  C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\Coffin.exe
  2⤵
  - Executes dropped EXE
  PID:424
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 424 -s 544
    3⤵
    - Program crash
    PID:3056

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 184 -p 424 -ip 424
1⤵
PID:980

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\Coffin.exe

Filesize
31KB

MD5
44527ff616d0d35163029bc3d27f586f

SHA1
3b47a42a905e6faaa89b127c1f04993f166144d1

SHA256
784c403af3b48518ccb4c86277242429ed28e46541c2f0d4a7de25213e17f2c3

SHA512
3ab17f3b7d49dd7c0b04e6702c1d6ee1395d7da6f5deba374eb60b40c85d37e19fb58a28ed94de61ab56990a70d1b02c821d4dcedfbf9a9b348e1a82a14521b0

Download Submit
C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\Coffin.exe

Filesize
31KB

MD5
44527ff616d0d35163029bc3d27f586f

SHA1
3b47a42a905e6faaa89b127c1f04993f166144d1

SHA256
784c403af3b48518ccb4c86277242429ed28e46541c2f0d4a7de25213e17f2c3

SHA512
3ab17f3b7d49dd7c0b04e6702c1d6ee1395d7da6f5deba374eb60b40c85d37e19fb58a28ed94de61ab56990a70d1b02c821d4dcedfbf9a9b348e1a82a14521b0

Download Submit
memory/424-136-0x0000000000000000-mapping.dmp

Download
memory/424-139-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/4516-132-0x0000000001000000-0x00000000010DB000-memory.dmp

Filesize
876KB

Download
memory/4516-133-0x0000000001000000-0x00000000010DB000-memory.dmp

Filesize
876KB

Download
memory/4516-134-0x0000000000130000-0x0000000000134000-memory.dmp

Filesize
16KB

Download
memory/4516-135-0x0000000000550000-0x0000000000589000-memory.dmp

Filesize
228KB

Download
memory/4516-140-0x0000000001000000-0x00000000010DB000-memory.dmp

Filesize
876KB

Download
memory/4516-141-0x0000000000550000-0x0000000000589000-memory.dmp

Filesize
228KB

Download
memory/4516-142-0x0000000001000000-0x00000000010DB000-memory.dmp

Filesize
876KB

Download