95b8673e3ebc155a34baa1904d64b729fbbaf7fc867553079708bd498a7f8f26

General

Target
jaffacakes118_95b8673e3ebc155a34baa1904d64b729fbbaf7fc867553079708bd498a7f8f26.exe
Size 36KB
Sample260925-wpjcdsshmc
SHA256 95b8673e3ebc155a34baa1904d64b729fbbaf7fc867553079708bd498a7f8f26
MD5 ba4ac6c90648f22764f30609a4e3ad46
SHA1 936c46c2e6e0c86fc0d60e555e0b29b74d252e3a
SHA512 793b414c45f702a4672591a17da574f09a5a6aaa08313330812cad718180bf8f06ad494d33566edbe17a09b2d3580ae6aa1df2aba9a9c6ae052e66fd34e68463
SSDEEP 768:xXC6xYWiBO9DFLokgk/DSzZeKqal/rZ9Tdl0:q7BOJFcaDSt0
TLSH
T1C8F23A475B4544B2D1DE0674706A0F379EBE8C38AA9464E3CB739EF83475AE7E42430A
MD5 SHA1 SHA512 SSDEEP TLSH

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
4064	fmbiost.exe

Loads dropped DLL 2 IoCs

pid	Process
4460	jaffacakes118_95b8673e3ebc155a34baa1904d64b729fbbaf7fc867553079708bd498a7f8f26.exe
4064	fmbiost.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\fmbiost = "C:\\Windows\\fmbiost.exe"	jaffacakes118_95b8673e3ebc155a34baa1904d64b729fbbaf7fc867553079708bd498a7f8f26.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\fmbiost.dll	jaffacakes118_95b8673e3ebc155a34baa1904d64b729fbbaf7fc867553079708bd498a7f8f26.exe
File created	C:\Windows\SysWOW64\fmbiost.dll	fmbiost.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\fmbiost.exe	jaffacakes118_95b8673e3ebc155a34baa1904d64b729fbbaf7fc867553079708bd498a7f8f26.exe
File opened for modification	C:\Windows\fmbiost.exe	jaffacakes118_95b8673e3ebc155a34baa1904d64b729fbbaf7fc867553079708bd498a7f8f26.exe

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	jaffacakes118_95b8673e3ebc155a34baa1904d64b729fbbaf7fc867553079708bd498a7f8f26.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	fmbiost.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4460	jaffacakes118_95b8673e3ebc155a34baa1904d64b729fbbaf7fc867553079708bd498a7f8f26.exe
4460	jaffacakes118_95b8673e3ebc155a34baa1904d64b729fbbaf7fc867553079708bd498a7f8f26.exe
4064	fmbiost.exe
4064	fmbiost.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
4460	jaffacakes118_95b8673e3ebc155a34baa1904d64b729fbbaf7fc867553079708bd498a7f8f26.exe
4064	fmbiost.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 4460 wrote to memory of 3276	4460	jaffacakes118_95b8673e3ebc155a34baa1904d64b729fbbaf7fc867553079708bd498a7f8f26.exe	56
PID 4064 wrote to memory of 3276	4064	fmbiost.exe	56

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:3276
- C:\Users\Admin\AppData\Local\Temp\jaffacakes118_95b8673e3ebc155a34baa1904d64b729fbbaf7fc867553079708bd498a7f8f26.exe
  "C:\Users\Admin\AppData\Local\Temp\jaffacakes118_95b8673e3ebc155a34baa1904d64b729fbbaf7fc867553079708bd498a7f8f26.exe"
  2⤵
  - Loads dropped DLL
  - Adds Run key to start application
  - Drops file in System32 directory
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4460

C:\Windows\fmbiost.exe
C:\Windows\fmbiost.exe
1⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4064

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

fmbiost.dll

Path C:\Windows\SysWOW64\fmbiost.dll
Size 28KB
SHA256 b2a448c5f3a2346f2cd8ea3af22eebeb3bfa2b269eea418806250e0c04144bb5
MD5 93bd506a2199fbbfd4b20ca7e5b134f8
SHA1 c5287f5b3f74d366199523d05548b4029ddefa92
SHA512 d26f3b3bc0520c8fa342f5929c417b597750fc9bbda91c01f96c1df949417201db9b94c7489bfa084e3a5792fefe75cc3bc14582140f15dd4c5c37bfd2167f2e
SSDEEP 384:ivYB5UA7HgDFkG5okM+iM+QDiIMPx0A6DuztzZAxXKqaw2/2o/r6W0KTXWSFlFu:HBO9DFLokgk/DSzZeKqal/rZ9Tdl0
TLSH
T122D23A164B4584B6D29E0574706E0F369DBE8D38AA9474E3DB331EF434766E6E42430A
MD5 SHA1 SHA512 SSDEEP TLSH

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fmbiost.exe

Path C:\Windows\fmbiost.exe
Size 36KB
SHA256 95b8673e3ebc155a34baa1904d64b729fbbaf7fc867553079708bd498a7f8f26
MD5 ba4ac6c90648f22764f30609a4e3ad46
SHA1 936c46c2e6e0c86fc0d60e555e0b29b74d252e3a
SHA512 793b414c45f702a4672591a17da574f09a5a6aaa08313330812cad718180bf8f06ad494d33566edbe17a09b2d3580ae6aa1df2aba9a9c6ae052e66fd34e68463
SSDEEP 768:xXC6xYWiBO9DFLokgk/DSzZeKqal/rZ9Tdl0:q7BOJFcaDSt0
TLSH
T1C8F23A475B4544B2D1DE0674706A0F379EBE8C38AA9464E3CB739EF83475AE7E42430A
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/3276-2-0x0000000002640000-0x0000000002641000-memory.dmp

Download

memory/4064-16-0x0000000010000000-0x000000001000D000-memory.dmp

Download

memory/4064-22-0x0000000000400000-0x000000000040C000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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Downloads