b884daea2d9b42c3ba7a183381c78d9d9022c77dda6242d1d06a42d0ef678f8b

Analysis

max time kernel
148s
max time network
145s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
19/11/2024, 14:10

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General

Target

Comprovante_de_pagamento.pdf.exe
Size

145KB
MD5

3cef41ea126aa53d1d98c1fdf6ff5ce2
SHA1

f0a8c1041e05baf14600307b722f59fd0349ab5f
SHA256

16adbc2a26d4dd6a5c2c74f9631947184c72d8e244e0ceb34d531ef07d852939
SHA512

926b92948bd7f146da56ecd6ffb0c0926ec04c36635a0cfc7e742dd8c98c213d3a90da2ebfa4e23fb36e8652b9ffb4a07a447df9c351ab863e5f3d276a3b4b57
SSDEEP

3072:p5sUNEt0g9dCXurh4wpvkIMZxaRo/1AxY9UN6vI1dvPKwdqTub:pBqxY986Q4

Score

10^/10

discovery persistence

Malware Config

Signatures

Suspicious use of NtCreateUserProcessOtherParentProcess 1 IoCs

description	pid	Process	procid_target
PID 744 created 3436	744	Comprovante_de_pagamento.pdf.exe	56

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\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Cumcoyy = "C:\\Users\\Admin\\AppData\\Roaming\\Cumcoyy.exe"	Comprovante_de_pagamento.pdf.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 744 set thread context of 1264	744	Comprovante_de_pagamento.pdf.exe	97

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	Comprovante_de_pagamento.pdf.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	InstallUtil.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
744	Comprovante_de_pagamento.pdf.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	744	Comprovante_de_pagamento.pdf.exe
Token: SeDebugPrivilege	744	Comprovante_de_pagamento.pdf.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 744 wrote to memory of 1264	744	Comprovante_de_pagamento.pdf.exe	97
PID 744 wrote to memory of 1264	744	Comprovante_de_pagamento.pdf.exe	97
PID 744 wrote to memory of 1264	744	Comprovante_de_pagamento.pdf.exe	97
PID 744 wrote to memory of 1264	744	Comprovante_de_pagamento.pdf.exe	97
PID 744 wrote to memory of 1264	744	Comprovante_de_pagamento.pdf.exe	97
PID 744 wrote to memory of 1264	744	Comprovante_de_pagamento.pdf.exe	97
PID 744 wrote to memory of 1264	744	Comprovante_de_pagamento.pdf.exe	97
PID 744 wrote to memory of 1264	744	Comprovante_de_pagamento.pdf.exe	97
PID 744 wrote to memory of 1264	744	Comprovante_de_pagamento.pdf.exe	97
PID 744 wrote to memory of 1264	744	Comprovante_de_pagamento.pdf.exe	97
PID 744 wrote to memory of 1264	744	Comprovante_de_pagamento.pdf.exe	97
PID 744 wrote to memory of 1264	744	Comprovante_de_pagamento.pdf.exe	97

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:3436
- C:\Users\Admin\AppData\Local\Temp\Comprovante_de_pagamento.pdf.exe
  "C:\Users\Admin\AppData\Local\Temp\Comprovante_de_pagamento.pdf.exe"
  2⤵
  - Suspicious use of NtCreateUserProcessOtherParentProcess
  - Adds Run key to start application
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:744
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1264

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/744-0-0x0000000074F1E000-0x0000000074F1F000-memory.dmp

Filesize
4KB

Download
memory/744-1-0x00000000008B0000-0x00000000008DA000-memory.dmp

Filesize
168KB

Download
memory/744-2-0x0000000074F10000-0x00000000756C0000-memory.dmp

Filesize
7.7MB

Download
memory/744-3-0x0000000005D50000-0x0000000005E6C000-memory.dmp

Filesize
1.1MB

Download
memory/744-7-0x0000000005D50000-0x0000000005E66000-memory.dmp

Filesize
1.1MB

Download
memory/744-4-0x0000000005D50000-0x0000000005E66000-memory.dmp

Filesize
1.1MB

Download
memory/744-17-0x0000000005D50000-0x0000000005E66000-memory.dmp

Filesize
1.1MB

Download
memory/744-37-0x0000000005D50000-0x0000000005E66000-memory.dmp

Filesize
1.1MB

Download
memory/744-67-0x0000000005D50000-0x0000000005E66000-memory.dmp

Filesize
1.1MB

Download
memory/744-65-0x0000000005D50000-0x0000000005E66000-memory.dmp

Filesize
1.1MB

Download
memory/744-64-0x0000000005D50000-0x0000000005E66000-memory.dmp

Filesize
1.1MB

Download
memory/744-61-0x0000000005D50000-0x0000000005E66000-memory.dmp

Filesize
1.1MB

Download
memory/744-59-0x0000000005D50000-0x0000000005E66000-memory.dmp

Filesize
1.1MB

Download
memory/744-57-0x0000000005D50000-0x0000000005E66000-memory.dmp

Filesize
1.1MB

Download
memory/744-55-0x0000000005D50000-0x0000000005E66000-memory.dmp

Filesize
1.1MB

Download
memory/744-53-0x0000000005D50000-0x0000000005E66000-memory.dmp

Filesize
1.1MB

Download
memory/744-51-0x0000000005D50000-0x0000000005E66000-memory.dmp

Filesize
1.1MB

Download
memory/744-49-0x0000000005D50000-0x0000000005E66000-memory.dmp

Filesize
1.1MB

Download
memory/744-47-0x0000000005D50000-0x0000000005E66000-memory.dmp

Filesize
1.1MB

Download
memory/744-45-0x0000000005D50000-0x0000000005E66000-memory.dmp

Filesize
1.1MB

Download
memory/744-43-0x0000000005D50000-0x0000000005E66000-memory.dmp

Filesize
1.1MB

Download
memory/744-41-0x0000000005D50000-0x0000000005E66000-memory.dmp

Filesize
1.1MB

Download
memory/744-39-0x0000000005D50000-0x0000000005E66000-memory.dmp

Filesize
1.1MB

Download
memory/744-35-0x0000000005D50000-0x0000000005E66000-memory.dmp

Filesize
1.1MB

Download
memory/744-33-0x0000000005D50000-0x0000000005E66000-memory.dmp

Filesize
1.1MB

Download
memory/744-32-0x0000000005D50000-0x0000000005E66000-memory.dmp

Filesize
1.1MB

Download
memory/744-29-0x0000000005D50000-0x0000000005E66000-memory.dmp

Filesize
1.1MB

Download
memory/744-27-0x0000000005D50000-0x0000000005E66000-memory.dmp

Filesize
1.1MB

Download
memory/744-25-0x0000000005D50000-0x0000000005E66000-memory.dmp

Filesize
1.1MB

Download
memory/744-23-0x0000000005D50000-0x0000000005E66000-memory.dmp

Filesize
1.1MB

Download
memory/744-19-0x0000000005D50000-0x0000000005E66000-memory.dmp

Filesize
1.1MB

Download
memory/744-15-0x0000000005D50000-0x0000000005E66000-memory.dmp

Filesize
1.1MB

Download
memory/744-13-0x0000000005D50000-0x0000000005E66000-memory.dmp

Filesize
1.1MB

Download
memory/744-11-0x0000000005D50000-0x0000000005E66000-memory.dmp

Filesize
1.1MB

Download
memory/744-9-0x0000000005D50000-0x0000000005E66000-memory.dmp

Filesize
1.1MB

Download
memory/744-5-0x0000000005D50000-0x0000000005E66000-memory.dmp

Filesize
1.1MB

Download
memory/744-22-0x0000000005D50000-0x0000000005E66000-memory.dmp

Filesize
1.1MB

Download
memory/744-1078-0x0000000074F10000-0x00000000756C0000-memory.dmp

Filesize
7.7MB

Download
memory/744-1080-0x00000000060A0000-0x00000000060EC000-memory.dmp

Filesize
304KB

Download
memory/744-1079-0x0000000006110000-0x00000000061A6000-memory.dmp

Filesize
600KB

Download
memory/744-1083-0x0000000074F10000-0x00000000756C0000-memory.dmp

Filesize
7.7MB

Download
memory/744-1084-0x0000000074F1E000-0x0000000074F1F000-memory.dmp

Filesize
4KB

Download
memory/744-1086-0x0000000074F10000-0x00000000756C0000-memory.dmp

Filesize
7.7MB

Download
memory/744-1087-0x0000000074F10000-0x00000000756C0000-memory.dmp

Filesize
7.7MB

Download
memory/744-1088-0x0000000074F10000-0x00000000756C0000-memory.dmp

Filesize
7.7MB

Download
memory/744-1089-0x0000000006950000-0x0000000006EF4000-memory.dmp

Filesize
5.6MB

Download
memory/744-1090-0x0000000006250000-0x00000000062A4000-memory.dmp

Filesize
336KB

Download
memory/744-1106-0x0000000074F10000-0x00000000756C0000-memory.dmp

Filesize
7.7MB

Download