formbook | f73c1a2549b119a5de3964cdcbbdbefbaca205e1f149b4d77688a92285b4d20b

General

Target

Purchase Order_pdf.exe
Size

519KB
MD5

b5e5802e37b01b3aa324090e4fc0af3a
SHA1

ad98482ee1e4c90d5ffc19b3ec4720a332f0800a
SHA256

f73c1a2549b119a5de3964cdcbbdbefbaca205e1f149b4d77688a92285b4d20b
SHA512

53fb3b2ed4552302ad3d24cf437bf8ed95a593fe2242bec5392983e64c1b602d45fca3d71033fbc0113b7fefb4a2f0d67b0d9a66bf5ada7da5c485e1ef64517b

Score

10^/10

formbook xloader loader rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

C2

http://www.chuanxingtong.com/j5an/

Decoy

xwwgj.com

release-paypal.com

investorshighway.com

maglex.info

chenangopistolpermit.com

thebihareye.com

sanjosemasks.com

foremanmotors.com

stadtstreicherin.com

9247pf.com

erenvincplatform.xyz

cushcaps.com

flatisteam.com

kojyouibennto.com

rahmatsuparman.com

vallyfades.online

metropitstop.com

shopasha.com

windycitycreditsolutions.com

uproxysite.com

Signatures

Formbook
Formbook is a data stealing malware which is capable of stealing data.
trojan spyware stealer formbook
Xloader
Xloader is a rebranded version of Formbook malware.
loader xloader

Xloader Payload 2 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/1988-4-0x0000000000400000-0x0000000000429000-memory.dmp	xloader
behavioral1/memory/1764-10-0x0000000000090000-0x00000000000B9000-memory.dmp	xloader

Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

1020 cmd.exe

pid	process
1020	cmd.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

Purchase Order_pdf.exePurchase Order_pdf.exewuapp.exe

description	pid	process	target process
PID 804 set thread context of 1988	804	Purchase Order_pdf.exe	Purchase Order_pdf.exe
PID 1988 set thread context of 1280	1988	Purchase Order_pdf.exe	Explorer.EXE
PID 1764 set thread context of 1280	1764	wuapp.exe	Explorer.EXE

Suspicious behavior: EnumeratesProcesses 31 IoCs

Processes:

Purchase Order_pdf.exewuapp.exe

pid	process
1988	Purchase Order_pdf.exe
1988	Purchase Order_pdf.exe
1764	wuapp.exe
1764	wuapp.exe
1764	wuapp.exe
1764	wuapp.exe
1764	wuapp.exe
1764	wuapp.exe
1764	wuapp.exe
1764	wuapp.exe
1764	wuapp.exe
1764	wuapp.exe
1764	wuapp.exe
1764	wuapp.exe
1764	wuapp.exe
1764	wuapp.exe
1764	wuapp.exe
1764	wuapp.exe
1764	wuapp.exe
1764	wuapp.exe
1764	wuapp.exe
1764	wuapp.exe
1764	wuapp.exe
1764	wuapp.exe
1764	wuapp.exe
1764	wuapp.exe
1764	wuapp.exe
1764	wuapp.exe
1764	wuapp.exe
1764	wuapp.exe
1764	wuapp.exe

Suspicious behavior: MapViewOfSection 6 IoCs

Processes:

Purchase Order_pdf.exePurchase Order_pdf.exewuapp.exe

pid process

804 Purchase Order_pdf.exe
1988 Purchase Order_pdf.exe
1988 Purchase Order_pdf.exe
1988 Purchase Order_pdf.exe
1764 wuapp.exe
1764 wuapp.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

Purchase Order_pdf.exewuapp.exe

description pid process

Token: SeDebugPrivilege 1988 Purchase Order_pdf.exe
Token: SeDebugPrivilege 1764 wuapp.exe
Suspicious use of FindShellTrayWindow 4 IoCs

Processes:

Explorer.EXE

pid process

1280 Explorer.EXE
1280 Explorer.EXE
1280 Explorer.EXE
1280 Explorer.EXE
Suspicious use of SendNotifyMessage 4 IoCs

Processes:

Explorer.EXE

pid process

1280 Explorer.EXE
1280 Explorer.EXE
1280 Explorer.EXE
1280 Explorer.EXE

pid	process
804	Purchase Order_pdf.exe
1988	Purchase Order_pdf.exe
1988	Purchase Order_pdf.exe
1988	Purchase Order_pdf.exe
1764	wuapp.exe
1764	wuapp.exe

description	pid	process
Token: SeDebugPrivilege	1988	Purchase Order_pdf.exe
Token: SeDebugPrivilege	1764	wuapp.exe

pid	process
1280	Explorer.EXE
1280	Explorer.EXE
1280	Explorer.EXE
1280	Explorer.EXE

pid	process
1280	Explorer.EXE
1280	Explorer.EXE
1280	Explorer.EXE
1280	Explorer.EXE

Suspicious use of WriteProcessMemory 16 IoCs

Processes:

Purchase Order_pdf.exeExplorer.EXEwuapp.exe

description	pid	process	target process
PID 804 wrote to memory of 1988	804	Purchase Order_pdf.exe	Purchase Order_pdf.exe
PID 804 wrote to memory of 1988	804	Purchase Order_pdf.exe	Purchase Order_pdf.exe
PID 804 wrote to memory of 1988	804	Purchase Order_pdf.exe	Purchase Order_pdf.exe
PID 804 wrote to memory of 1988	804	Purchase Order_pdf.exe	Purchase Order_pdf.exe
PID 804 wrote to memory of 1988	804	Purchase Order_pdf.exe	Purchase Order_pdf.exe
PID 1280 wrote to memory of 1764	1280	Explorer.EXE	wuapp.exe
PID 1280 wrote to memory of 1764	1280	Explorer.EXE	wuapp.exe
PID 1280 wrote to memory of 1764	1280	Explorer.EXE	wuapp.exe
PID 1280 wrote to memory of 1764	1280	Explorer.EXE	wuapp.exe
PID 1280 wrote to memory of 1764	1280	Explorer.EXE	wuapp.exe
PID 1280 wrote to memory of 1764	1280	Explorer.EXE	wuapp.exe
PID 1280 wrote to memory of 1764	1280	Explorer.EXE	wuapp.exe
PID 1764 wrote to memory of 1020	1764	wuapp.exe	cmd.exe
PID 1764 wrote to memory of 1020	1764	wuapp.exe	cmd.exe
PID 1764 wrote to memory of 1020	1764	wuapp.exe	cmd.exe
PID 1764 wrote to memory of 1020	1764	wuapp.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:1280

C:\Users\Admin\AppData\Local\Temp\Purchase Order_pdf.exe
"C:\Users\Admin\AppData\Local\Temp\Purchase Order_pdf.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:804

C:\Users\Admin\AppData\Local\Temp\Purchase Order_pdf.exe
"C:\Users\Admin\AppData\Local\Temp\Purchase Order_pdf.exe"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:1988

C:\Windows\SysWOW64\autoconv.exe
"C:\Windows\SysWOW64\autoconv.exe"
2⤵
PID:1748

C:\Windows\SysWOW64\autofmt.exe
"C:\Windows\SysWOW64\autofmt.exe"
2⤵
PID:1804

C:\Windows\SysWOW64\autochk.exe
"C:\Windows\SysWOW64\autochk.exe"
2⤵
PID:1716

C:\Windows\SysWOW64\autochk.exe
"C:\Windows\SysWOW64\autochk.exe"
2⤵
PID:1712

C:\Windows\SysWOW64\wuapp.exe
"C:\Windows\SysWOW64\wuapp.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1764

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\Purchase Order_pdf.exe"
3⤵
- Deletes itself
PID:1020

Network

MITRE ATT&CK Matrix

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Downloads

memory/804-2-0x0000000076C21000-0x0000000076C23000-memory.dmp

Filesize
8KB

Download
memory/1020-11-0x0000000000000000-mapping.dmp

Download
memory/1280-7-0x0000000006B40000-0x0000000006CB7000-memory.dmp

Filesize
1.5MB

Download
memory/1280-14-0x0000000004950000-0x00000000049FB000-memory.dmp

Filesize
684KB

Download
memory/1764-8-0x0000000000000000-mapping.dmp

Download
memory/1764-10-0x0000000000090000-0x00000000000B9000-memory.dmp

Filesize
164KB

Download
memory/1764-9-0x0000000000E90000-0x0000000000E9B000-memory.dmp

Filesize
44KB

Download
memory/1764-12-0x0000000000B30000-0x0000000000E33000-memory.dmp

Filesize
3.0MB

Download
memory/1764-13-0x00000000009A0000-0x0000000000A30000-memory.dmp

Filesize
576KB

Download
memory/1988-6-0x00000000001F0000-0x0000000000201000-memory.dmp

Filesize
68KB

Download
memory/1988-5-0x0000000000B40000-0x0000000000E43000-memory.dmp

Filesize
3.0MB

Download
memory/1988-4-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/1988-3-0x000000000041D070-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix

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Downloads