aa00f82fb3dd04417a278bc9362becdf39fcb3e4e23893327e16a8792334635f

General

Target

Facturas.exe
Size

639KB
MD5

d42623d0669082db1713a751ef94fc68
SHA1

9d8bb3b343f1f380b799a16c38be6d546d3f7d00
SHA256

aa00f82fb3dd04417a278bc9362becdf39fcb3e4e23893327e16a8792334635f
SHA512

ffb5b361dae3aebb561bb0fe60a56ce63b957e686690cf96107e5cee76234f11ce6d4fc911ea56bf172599da92cef4609640d981ae74319761ff5d0e83c65660

Score

7^/10

Malware Config

Signatures

Suspicious use of SendNotifyMessage 4 IoCs

pid	Process
1292	Explorer.EXE
1292	Explorer.EXE
1292	Explorer.EXE
1292	Explorer.EXE

Adds Run entry 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\Run	wuapp.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\VNU84HJ0 = "C:\\Program Files (x86)\\K5jr\\gdi_nux.exe"	wuapp.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware

Data from Local System
T1005

Credentials in Files
T1081

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	Explorer.EXE

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 900 set thread context of 1104	900	Facturas.exe	24
PID 1104 set thread context of 1292	1104	Facturas.exe	20
PID 1432 set thread context of 1292	1432	wuapp.exe	20

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1104	Facturas.exe
Token: SeDebugPrivilege	1432	wuapp.exe
Token: SeShutdownPrivilege	1292	Explorer.EXE

Deletes itself 1 IoCs

pid	Process
1452	cmd.exe

Suspicious use of FindShellTrayWindow 5 IoCs

pid	Process
1292	Explorer.EXE
1292	Explorer.EXE
1292	Explorer.EXE
1292	Explorer.EXE
1292	Explorer.EXE

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\K5jr\gdi_nux.exe	wuapp.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\Registry\User\S-1-5-21-1131729243-447456001-3632642222-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	wuapp.exe

Suspicious behavior: EnumeratesProcesses 31 IoCs

pid	Process
900	Facturas.exe
1104	Facturas.exe
1104	Facturas.exe
1432	wuapp.exe
1432	wuapp.exe
1432	wuapp.exe
1432	wuapp.exe
1432	wuapp.exe
1432	wuapp.exe
1432	wuapp.exe
1432	wuapp.exe
1432	wuapp.exe
1432	wuapp.exe
1432	wuapp.exe
1432	wuapp.exe
1432	wuapp.exe
1432	wuapp.exe
1432	wuapp.exe
1432	wuapp.exe
1432	wuapp.exe
1432	wuapp.exe
1432	wuapp.exe
1432	wuapp.exe
1432	wuapp.exe
1432	wuapp.exe
1432	wuapp.exe
1432	wuapp.exe
1432	wuapp.exe
1432	wuapp.exe
1432	wuapp.exe
1432	wuapp.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 900 wrote to memory of 1104	900	Facturas.exe	24
PID 900 wrote to memory of 1104	900	Facturas.exe	24
PID 900 wrote to memory of 1104	900	Facturas.exe	24
PID 900 wrote to memory of 1104	900	Facturas.exe	24
PID 1292 wrote to memory of 1432	1292	Explorer.EXE	25
PID 1292 wrote to memory of 1432	1292	Explorer.EXE	25
PID 1292 wrote to memory of 1432	1292	Explorer.EXE	25
PID 1292 wrote to memory of 1432	1292	Explorer.EXE	25
PID 1292 wrote to memory of 1432	1292	Explorer.EXE	25
PID 1292 wrote to memory of 1432	1292	Explorer.EXE	25
PID 1292 wrote to memory of 1432	1292	Explorer.EXE	25
PID 1432 wrote to memory of 1452	1432	wuapp.exe	26
PID 1432 wrote to memory of 1452	1432	wuapp.exe	26
PID 1432 wrote to memory of 1452	1432	wuapp.exe	26
PID 1432 wrote to memory of 1452	1432	wuapp.exe	26

Suspicious behavior: MapViewOfSection 6 IoCs

pid	Process
900	Facturas.exe
1104	Facturas.exe
1104	Facturas.exe
1104	Facturas.exe
1432	wuapp.exe
1432	wuapp.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of SendNotifyMessage
- Checks whether UAC is enabled
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:1292
- C:\Users\Admin\AppData\Local\Temp\Facturas.exe
  "C:\Users\Admin\AppData\Local\Temp\Facturas.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  - Suspicious behavior: MapViewOfSection
  PID:900
- - C:\Users\Admin\AppData\Local\Temp\Facturas.exe
    "C:\Users\Admin\AppData\Local\Temp\Facturas.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    PID:1104
- C:\Windows\SysWOW64\wuapp.exe
  "C:\Windows\SysWOW64\wuapp.exe"
  2⤵
  - Adds Run entry to start application
  - Suspicious use of SetThreadContext
  - Suspicious use of AdjustPrivilegeToken
  - Drops file in Program Files directory
  - Modifies Internet Explorer settings
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  - Suspicious behavior: MapViewOfSection
  PID:1432
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\Facturas.exe"
    3⤵
    - Deletes itself
    PID:1452

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

2

T1112

Credential Access

Credentials in Files

1

T1081

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

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Downloads

memory/1104-0-0x0000000000400000-0x000000000042A000-memory.dmp

Filesize
168KB

Download
memory/1432-3-0x00000000011D0000-0x00000000011DB000-memory.dmp

Filesize
44KB

Download
memory/1432-5-0x0000000002FB0000-0x00000000030EB000-memory.dmp

Filesize
1.2MB

Download
memory/1432-6-0x00000000777C0000-0x00000000777CC000-memory.dmp

Filesize
48KB

Download
memory/1432-7-0x00000000765C0000-0x00000000766DD000-memory.dmp

Filesize
1.1MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads