formbook | b4f96434e2b2659a4c17a81ecf497f2d9bfbb8cb75fdb623d57f2e7377a46f99

General

Target

Factura de proforma.Pdf.exe
Size

416KB
MD5

1023715ab1412b3ab39be25ad6054e9c
SHA1

b93d9283fffc26259a3675195ed878b3089ca8b7
SHA256

b4585da149dee9da71100f73ac5088f6dcd2f0bad3a155a78615ab321fce3f71
SHA512

63a837b607dd274a3285380d2bdad3b0b059ffbb39b7e7f14a9d76eb3dc4fca861cf0bcfd6be4420f3a13d83f3388afbc41859a08c3b87778bdebdd399eca376

Score

10^/10

formbook dv9n rat spyware stealer suricata trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

dv9n

C2

http://www.elianedefalco.com/dv9n/

Decoy

nblvqing.com

delmegebuildingproducts.com

xiongba8.com

latuawebreputation.online

nowcloud.tech

cckghs.com

tradeoo.ltd

ppapo.com

tphoaphuongdo.club

whitefoxy.site

bottle-sentences.net

computersewa.com

lushberryholidays.com

motobotz.com

shadurj.com

amazonlexdeveloper.com

shunli178.xyz

sjzzlmh.com

6eu09rp.xyz

novinmes.com

Signatures

Formbook
Formbook is a data stealing malware which is capable of stealing data.
trojan spyware stealer formbook
suricata: ET MALWARE FormBook CnC Checkin (GET)
suricata: ET MALWARE FormBook CnC Checkin (GET)
suricata

Formbook Payload 3 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/1072-64-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/1072-65-0x000000000041F190-mapping.dmp	formbook
behavioral1/memory/956-72-0x00000000000E0000-0x000000000010F000-memory.dmp	formbook

Suspicious use of SetThreadContext 3 IoCs

Processes:

Factura de proforma.Pdf.exeRegSvcs.exesystray.exe

description	pid	process	target process
PID 1748 set thread context of 1072	1748	Factura de proforma.Pdf.exe	RegSvcs.exe
PID 1072 set thread context of 1304	1072	RegSvcs.exe	Explorer.EXE
PID 956 set thread context of 1304	956	systray.exe	Explorer.EXE

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task
T1053

Processes:

schtasks.exe

pid process

1820 schtasks.exe

pid	process
1820	schtasks.exe

Suspicious behavior: EnumeratesProcesses 25 IoCs

Processes:

Factura de proforma.Pdf.exeRegSvcs.exesystray.exe

pid	process
1748	Factura de proforma.Pdf.exe
1748	Factura de proforma.Pdf.exe
1072	RegSvcs.exe
1072	RegSvcs.exe
956	systray.exe
956	systray.exe
956	systray.exe
956	systray.exe
956	systray.exe
956	systray.exe
956	systray.exe
956	systray.exe
956	systray.exe
956	systray.exe
956	systray.exe
956	systray.exe
956	systray.exe
956	systray.exe
956	systray.exe
956	systray.exe
956	systray.exe
956	systray.exe
956	systray.exe
956	systray.exe
956	systray.exe

Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

RegSvcs.exesystray.exe

pid process

1072 RegSvcs.exe
1072 RegSvcs.exe
1072 RegSvcs.exe
956 systray.exe
956 systray.exe

pid	process
1072	RegSvcs.exe
1072	RegSvcs.exe
1072	RegSvcs.exe
956	systray.exe
956	systray.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

Factura de proforma.Pdf.exeRegSvcs.exesystray.exe

description	pid	process
Token: SeDebugPrivilege	1748	Factura de proforma.Pdf.exe
Token: SeDebugPrivilege	1072	RegSvcs.exe
Token: SeDebugPrivilege	956	systray.exe

Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

Explorer.EXE

pid process

1304 Explorer.EXE
1304 Explorer.EXE
Suspicious use of SendNotifyMessage 2 IoCs

Processes:

Explorer.EXE

pid process

1304 Explorer.EXE
1304 Explorer.EXE

pid	process
1304	Explorer.EXE
1304	Explorer.EXE

pid	process
1304	Explorer.EXE
1304	Explorer.EXE

Suspicious use of WriteProcessMemory 22 IoCs

Processes:

Factura de proforma.Pdf.exeExplorer.EXEsystray.exe

description	pid	process	target process
PID 1748 wrote to memory of 1820	1748	Factura de proforma.Pdf.exe	schtasks.exe
PID 1748 wrote to memory of 1820	1748	Factura de proforma.Pdf.exe	schtasks.exe
PID 1748 wrote to memory of 1820	1748	Factura de proforma.Pdf.exe	schtasks.exe
PID 1748 wrote to memory of 1820	1748	Factura de proforma.Pdf.exe	schtasks.exe
PID 1748 wrote to memory of 1072	1748	Factura de proforma.Pdf.exe	RegSvcs.exe
PID 1748 wrote to memory of 1072	1748	Factura de proforma.Pdf.exe	RegSvcs.exe
PID 1748 wrote to memory of 1072	1748	Factura de proforma.Pdf.exe	RegSvcs.exe
PID 1748 wrote to memory of 1072	1748	Factura de proforma.Pdf.exe	RegSvcs.exe
PID 1748 wrote to memory of 1072	1748	Factura de proforma.Pdf.exe	RegSvcs.exe
PID 1748 wrote to memory of 1072	1748	Factura de proforma.Pdf.exe	RegSvcs.exe
PID 1748 wrote to memory of 1072	1748	Factura de proforma.Pdf.exe	RegSvcs.exe
PID 1748 wrote to memory of 1072	1748	Factura de proforma.Pdf.exe	RegSvcs.exe
PID 1748 wrote to memory of 1072	1748	Factura de proforma.Pdf.exe	RegSvcs.exe
PID 1748 wrote to memory of 1072	1748	Factura de proforma.Pdf.exe	RegSvcs.exe
PID 1304 wrote to memory of 956	1304	Explorer.EXE	systray.exe
PID 1304 wrote to memory of 956	1304	Explorer.EXE	systray.exe
PID 1304 wrote to memory of 956	1304	Explorer.EXE	systray.exe
PID 1304 wrote to memory of 956	1304	Explorer.EXE	systray.exe
PID 956 wrote to memory of 1984	956	systray.exe	cmd.exe
PID 956 wrote to memory of 1984	956	systray.exe	cmd.exe
PID 956 wrote to memory of 1984	956	systray.exe	cmd.exe
PID 956 wrote to memory of 1984	956	systray.exe	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1304

C:\Users\Admin\AppData\Local\Temp\Factura de proforma.Pdf.exe
"C:\Users\Admin\AppData\Local\Temp\Factura de proforma.Pdf.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1748

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\BKcHlxwvyiaYUp" /XML "C:\Users\Admin\AppData\Local\Temp\tmp582E.tmp"
3⤵
- Creates scheduled task(s)
PID:1820

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:1072

C:\Windows\SysWOW64\systray.exe
"C:\Windows\SysWOW64\systray.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:956

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
3⤵
PID:1984

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/956-70-0x0000000000000000-mapping.dmp

Download
memory/956-75-0x0000000000920000-0x00000000009B3000-memory.dmp

Filesize
588KB

Download
memory/956-74-0x0000000000A50000-0x0000000000D53000-memory.dmp

Filesize
3.0MB

Download
memory/956-72-0x00000000000E0000-0x000000000010F000-memory.dmp

Filesize
188KB

Download
memory/956-71-0x0000000000D90000-0x0000000000D95000-memory.dmp

Filesize
20KB

Download
memory/1072-66-0x00000000008D0000-0x0000000000BD3000-memory.dmp

Filesize
3.0MB

Download
memory/1072-68-0x0000000000190000-0x00000000001A4000-memory.dmp

Filesize
80KB

Download
memory/1072-64-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1072-65-0x000000000041F190-mapping.dmp

Download
memory/1072-63-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1072-62-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1304-69-0x00000000060E0000-0x000000000619B000-memory.dmp

Filesize
748KB

Download
memory/1304-76-0x0000000007F40000-0x00000000080A1000-memory.dmp

Filesize
1.4MB

Download
memory/1748-55-0x0000000000C00000-0x0000000000C01000-memory.dmp

Filesize
4KB

Download
memory/1748-60-0x0000000000AB0000-0x0000000000B00000-memory.dmp

Filesize
320KB

Download
memory/1748-59-0x00000000008C0000-0x00000000008C7000-memory.dmp

Filesize
28KB

Download
memory/1748-58-0x000000007EF40000-0x000000007EF41000-memory.dmp

Filesize
4KB

Download
memory/1748-57-0x00000000070F0000-0x00000000070F1000-memory.dmp

Filesize
4KB

Download
memory/1820-61-0x0000000000000000-mapping.dmp

Download
memory/1984-73-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads