formbook | 90e7c97ea4917a6efb5c0a69bd6f481b1a5023d6f8ad0f22d123c417edff8a68

General

Target

Documents pdf.exe
Size

533KB
MD5

027d8e07155bc564f7b522183018efe6
SHA1

10348a89cc88e0911f507a2d4aa50071718b096c
SHA256

90e7c97ea4917a6efb5c0a69bd6f481b1a5023d6f8ad0f22d123c417edff8a68
SHA512

5d1c8f6f0121df79767de6de22e7f513972aceeafd7376086511c8575187e224190a408340ec57835e9c0e0a347d47d7e4fd70c8618f91cf638c23b3acc5c3d3

Score

10^/10

formbook rat spyware stealer suricata trojan

Malware Config

Extracted

Family

formbook

Version

4.1

C2

http://www.valiantfinancial.net/hth0/

Decoy

grahamandjana.com

surfpodcastnetwork.com

valkyrie20.com

hire4looks.com

wewalkfastasone.com

saveourschoolyear.com

5g23e.com

abusinesssystems.com

telefonepantalla.com

tailorscafe.com

schwarzer-markt.net

stopwatch247.com

458grandbetting.com

xpovision.com

kutkingbarbering.life

kppp-guxxz.xyz

chuckwagon-chow.com

la-casa-delle-vita.com

creativesocials.com

negociacoeshojebr.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

Formbook Payload 3 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/1488-70-0x0000000000400000-0x000000000042E000-memory.dmp	formbook
behavioral1/memory/1488-71-0x000000000041ED60-mapping.dmp	formbook
behavioral1/memory/432-79-0x0000000000080000-0x00000000000AE000-memory.dmp	formbook

Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

1424 cmd.exe

pid	process
1424	cmd.exe

Suspicious use of SetThreadContext 4 IoCs

Processes:

Documents pdf.exeDocuments pdf.exewlanext.exe

description	pid	process	target process
PID 1348 set thread context of 1488	1348	Documents pdf.exe	Documents pdf.exe
PID 1488 set thread context of 1220	1488	Documents pdf.exe	Explorer.EXE
PID 1488 set thread context of 1220	1488	Documents pdf.exe	Explorer.EXE
PID 432 set thread context of 1220	432	wlanext.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

688 schtasks.exe

pid	process
688	schtasks.exe

Suspicious behavior: EnumeratesProcesses 22 IoCs

Processes:

Documents pdf.exewlanext.exe

pid	process
1488	Documents pdf.exe
1488	Documents pdf.exe
1488	Documents pdf.exe
432	wlanext.exe
432	wlanext.exe
432	wlanext.exe
432	wlanext.exe
432	wlanext.exe
432	wlanext.exe
432	wlanext.exe
432	wlanext.exe
432	wlanext.exe
432	wlanext.exe
432	wlanext.exe
432	wlanext.exe
432	wlanext.exe
432	wlanext.exe
432	wlanext.exe
432	wlanext.exe
432	wlanext.exe
432	wlanext.exe
432	wlanext.exe

Suspicious behavior: MapViewOfSection 6 IoCs

Processes:

Documents pdf.exewlanext.exe

pid process

1488 Documents pdf.exe
1488 Documents pdf.exe
1488 Documents pdf.exe
1488 Documents pdf.exe
432 wlanext.exe
432 wlanext.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

Documents pdf.exewlanext.exe

description pid process

Token: SeDebugPrivilege 1488 Documents pdf.exe
Token: SeDebugPrivilege 432 wlanext.exe
Suspicious use of FindShellTrayWindow 4 IoCs

Processes:

Explorer.EXE

pid process

1220 Explorer.EXE
1220 Explorer.EXE
1220 Explorer.EXE
1220 Explorer.EXE
Suspicious use of SendNotifyMessage 4 IoCs

Processes:

Explorer.EXE

pid process

1220 Explorer.EXE
1220 Explorer.EXE
1220 Explorer.EXE
1220 Explorer.EXE

description	pid	process
Token: SeDebugPrivilege	1488	Documents pdf.exe
Token: SeDebugPrivilege	432	wlanext.exe

pid	process
1220	Explorer.EXE
1220	Explorer.EXE
1220	Explorer.EXE
1220	Explorer.EXE

pid	process
1220	Explorer.EXE
1220	Explorer.EXE
1220	Explorer.EXE
1220	Explorer.EXE

Suspicious use of WriteProcessMemory 19 IoCs

Processes:

Documents pdf.exeExplorer.EXEwlanext.exe

description	pid	process	target process
PID 1348 wrote to memory of 688	1348	Documents pdf.exe	schtasks.exe
PID 1348 wrote to memory of 688	1348	Documents pdf.exe	schtasks.exe
PID 1348 wrote to memory of 688	1348	Documents pdf.exe	schtasks.exe
PID 1348 wrote to memory of 688	1348	Documents pdf.exe	schtasks.exe
PID 1348 wrote to memory of 1488	1348	Documents pdf.exe	Documents pdf.exe
PID 1348 wrote to memory of 1488	1348	Documents pdf.exe	Documents pdf.exe
PID 1348 wrote to memory of 1488	1348	Documents pdf.exe	Documents pdf.exe
PID 1348 wrote to memory of 1488	1348	Documents pdf.exe	Documents pdf.exe
PID 1348 wrote to memory of 1488	1348	Documents pdf.exe	Documents pdf.exe
PID 1348 wrote to memory of 1488	1348	Documents pdf.exe	Documents pdf.exe
PID 1348 wrote to memory of 1488	1348	Documents pdf.exe	Documents pdf.exe
PID 1220 wrote to memory of 432	1220	Explorer.EXE	wlanext.exe
PID 1220 wrote to memory of 432	1220	Explorer.EXE	wlanext.exe
PID 1220 wrote to memory of 432	1220	Explorer.EXE	wlanext.exe
PID 1220 wrote to memory of 432	1220	Explorer.EXE	wlanext.exe
PID 432 wrote to memory of 1424	432	wlanext.exe	cmd.exe
PID 432 wrote to memory of 1424	432	wlanext.exe	cmd.exe
PID 432 wrote to memory of 1424	432	wlanext.exe	cmd.exe
PID 432 wrote to memory of 1424	432	wlanext.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:1220

C:\Users\Admin\AppData\Local\Temp\Documents pdf.exe
"C:\Users\Admin\AppData\Local\Temp\Documents pdf.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1348

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\PwTRIU" /XML "C:\Users\Admin\AppData\Local\Temp\tmp3498.tmp"
3⤵
- Creates scheduled task(s)
PID:688

C:\Users\Admin\AppData\Local\Temp\Documents pdf.exe
"{path}"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:1488

C:\Windows\SysWOW64\wlanext.exe
"C:\Windows\SysWOW64\wlanext.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:432

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\Documents pdf.exe"
3⤵
- Deletes itself
PID:1424

Network

MITRE ATT&CK Enterprise 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

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp3498.tmp
MD5
5ff73a757e03c8f9e39892a48f59afb2

SHA1
8d1f72e1cdb36ae307f74b8a7299824473a574a2

SHA256
2a22b7c9b4eb52ff11dab357e2e22f72fd113e3e694e5ec12485944cf549f489

SHA512
4bd8ff4bd44d555aaee05cb391e00c971495adecf295cfa5aa043c3d1d925d6cdd8f9f93eee95456ee29ea0856864da88dddae8e3908769626dcecc1980b6e4b

Download Submit
memory/432-82-0x0000000001E30000-0x0000000001EC3000-memory.dmp

Filesize
588KB

Download
memory/432-81-0x0000000001FC0000-0x00000000022C3000-memory.dmp

Filesize
3.0MB

Download
memory/432-79-0x0000000000080000-0x00000000000AE000-memory.dmp

Filesize
184KB

Download
memory/432-78-0x00000000003C0000-0x00000000003D6000-memory.dmp

Filesize
88KB

Download
memory/432-77-0x0000000000000000-mapping.dmp

Download
memory/688-68-0x0000000000000000-mapping.dmp

Download
memory/1220-74-0x0000000006130000-0x0000000006271000-memory.dmp

Filesize
1.3MB

Download
memory/1220-83-0x0000000006280000-0x0000000006345000-memory.dmp

Filesize
788KB

Download
memory/1220-76-0x0000000003EB0000-0x0000000003F90000-memory.dmp

Filesize
896KB

Download
memory/1348-66-0x0000000004B90000-0x0000000004C1A000-memory.dmp

Filesize
552KB

Download
memory/1348-67-0x0000000004440000-0x000000000447A000-memory.dmp

Filesize
232KB

Download
memory/1348-60-0x0000000010FE0000-0x0000000010FE1000-memory.dmp

Filesize
4KB

Download
memory/1348-65-0x00000000048E5000-0x00000000048F6000-memory.dmp

Filesize
68KB

Download
memory/1348-64-0x0000000003EF0000-0x0000000003EF2000-memory.dmp

Filesize
8KB

Download
memory/1348-63-0x00000000048E0000-0x00000000048E1000-memory.dmp

Filesize
4KB

Download
memory/1348-62-0x0000000003F10000-0x0000000003F77000-memory.dmp

Filesize
412KB

Download
memory/1424-80-0x0000000000000000-mapping.dmp

Download
memory/1488-73-0x0000000000190000-0x00000000001A4000-memory.dmp

Filesize
80KB

Download
memory/1488-72-0x0000000000AA0000-0x0000000000DA3000-memory.dmp

Filesize
3.0MB

Download
memory/1488-71-0x000000000041ED60-mapping.dmp

Download
memory/1488-75-0x0000000000220000-0x0000000000234000-memory.dmp

Filesize
80KB

Download
memory/1488-70-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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