formbook | 940584cf3203158b88b4dfafc8550d92be205ca5ef401da8a4449622e423751c

General

Target

Payment_Advice.exe
Size

119KB
MD5

fb6b4faf70cfaeac35c5f0fe94ac08e4
SHA1

e18e49ae0c5d0bbc332b869c60bdbf5f6cfe652f
SHA256

940584cf3203158b88b4dfafc8550d92be205ca5ef401da8a4449622e423751c
SHA512

d75ca0422d9d4f325282566de106a2ab669942b34fdbecc2b454fee5018968229bafb74bfdbf01d405b9a73847ab8dde625023e3fba192c83d07fcf5292950c2

Score

10^/10

formbook fs44 rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

fs44

Decoy

whneat.com

jljcw.net

pocodelivery.com

outofplacezine.com

yavuzcansigorta.com

xinhewood-cn.com

cartogogh.com

5avis.com

joyceyong.art

digitalsurf.community

blackcreekbarns.com

magazinedistribuidor.com

sportsgross.com

drevom.online

mayibeofservice.com

gareloi-digit.com

permitha.net

renaissanceestetica.com

facts-r-friends.com

dach-loc.com

Signatures

Formbook
Formbook is a data stealing malware which is capable of stealing data.
trojan spyware stealer formbook

Formbook payload 4 IoCs

rat

Processes:

resource	yara_rule
behavioral2/memory/1948-146-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/1948-152-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/1492-156-0x0000000000900000-0x000000000092F000-memory.dmp	formbook
behavioral2/memory/1492-159-0x0000000000900000-0x000000000092F000-memory.dmp	formbook

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

Payment_Advice.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3463845317-933582289-45817732-1000\Control Panel\International\Geo\Nation	Payment_Advice.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

Payment_Advice.exeMSBuild.exehelp.exe

description	pid	process	target process
PID 4348 set thread context of 1948	4348	Payment_Advice.exe	MSBuild.exe
PID 1948 set thread context of 2232	1948	MSBuild.exe	Explorer.EXE
PID 1492 set thread context of 2232	1492	help.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

Suspicious behavior: EnumeratesProcesses 52 IoCs

Processes:

powershell.exePayment_Advice.exeMSBuild.exehelp.exe

pid	process
484	powershell.exe
484	powershell.exe
4348	Payment_Advice.exe
4348	Payment_Advice.exe
1948	MSBuild.exe
1948	MSBuild.exe
1948	MSBuild.exe
1948	MSBuild.exe
1492	help.exe
1492	help.exe
1492	help.exe
1492	help.exe
1492	help.exe
1492	help.exe
1492	help.exe
1492	help.exe
1492	help.exe
1492	help.exe
1492	help.exe
1492	help.exe
1492	help.exe
1492	help.exe
1492	help.exe
1492	help.exe
1492	help.exe
1492	help.exe
1492	help.exe
1492	help.exe
1492	help.exe
1492	help.exe
1492	help.exe
1492	help.exe
1492	help.exe
1492	help.exe
1492	help.exe
1492	help.exe
1492	help.exe
1492	help.exe
1492	help.exe
1492	help.exe
1492	help.exe
1492	help.exe
1492	help.exe
1492	help.exe
1492	help.exe
1492	help.exe
1492	help.exe
1492	help.exe
1492	help.exe
1492	help.exe
1492	help.exe
1492	help.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

2232 Explorer.EXE
Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

MSBuild.exehelp.exe

pid process

1948 MSBuild.exe
1948 MSBuild.exe
1948 MSBuild.exe
1492 help.exe
1492 help.exe

pid	process
2232	Explorer.EXE

pid	process
1948	MSBuild.exe
1948	MSBuild.exe
1948	MSBuild.exe
1492	help.exe
1492	help.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

Payment_Advice.exepowershell.exeMSBuild.exehelp.exe

description	pid	process
Token: SeDebugPrivilege	4348	Payment_Advice.exe
Token: SeDebugPrivilege	484	powershell.exe
Token: SeDebugPrivilege	1948	MSBuild.exe
Token: SeDebugPrivilege	1492	help.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

Payment_Advice.exeExplorer.EXEhelp.exe

description	pid	process	target process
PID 4348 wrote to memory of 484	4348	Payment_Advice.exe	powershell.exe
PID 4348 wrote to memory of 484	4348	Payment_Advice.exe	powershell.exe
PID 4348 wrote to memory of 484	4348	Payment_Advice.exe	powershell.exe
PID 4348 wrote to memory of 1948	4348	Payment_Advice.exe	MSBuild.exe
PID 4348 wrote to memory of 1948	4348	Payment_Advice.exe	MSBuild.exe
PID 4348 wrote to memory of 1948	4348	Payment_Advice.exe	MSBuild.exe
PID 4348 wrote to memory of 1948	4348	Payment_Advice.exe	MSBuild.exe
PID 4348 wrote to memory of 1948	4348	Payment_Advice.exe	MSBuild.exe
PID 4348 wrote to memory of 1948	4348	Payment_Advice.exe	MSBuild.exe
PID 2232 wrote to memory of 1492	2232	Explorer.EXE	help.exe
PID 2232 wrote to memory of 1492	2232	Explorer.EXE	help.exe
PID 2232 wrote to memory of 1492	2232	Explorer.EXE	help.exe
PID 1492 wrote to memory of 1740	1492	help.exe	cmd.exe
PID 1492 wrote to memory of 1740	1492	help.exe	cmd.exe
PID 1492 wrote to memory of 1740	1492	help.exe	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:2232

C:\Users\Admin\AppData\Local\Temp\Payment_Advice.exe
"C:\Users\Admin\AppData\Local\Temp\Payment_Advice.exe"
2⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4348

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc UwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBTAGUAYwBvAG4AZABzACAAMgAwAA==
3⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:484

C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe purecrypter.exe
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:1948

C:\Windows\SysWOW64\help.exe
"C:\Windows\SysWOW64\help.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1492

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
3⤵
PID:1740

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

memory/484-143-0x0000000007E20000-0x000000000849A000-memory.dmp

Filesize
6.5MB

Download
memory/484-144-0x0000000006A90000-0x0000000006AAA000-memory.dmp

Filesize
104KB

Download
memory/484-137-0x0000000000000000-mapping.dmp

Download
memory/484-138-0x0000000005000000-0x0000000005036000-memory.dmp

Filesize
216KB

Download
memory/484-139-0x0000000005670000-0x0000000005C98000-memory.dmp

Filesize
6.2MB

Download
memory/484-140-0x0000000005DA0000-0x0000000005E06000-memory.dmp

Filesize
408KB

Download
memory/484-141-0x0000000005F50000-0x0000000005FB6000-memory.dmp

Filesize
408KB

Download
memory/484-142-0x00000000065A0000-0x00000000065BE000-memory.dmp

Filesize
120KB

Download
memory/1492-155-0x0000000000F70000-0x00000000012BA000-memory.dmp

Filesize
3.3MB

Download
memory/1492-151-0x0000000000000000-mapping.dmp

Download
memory/1492-159-0x0000000000900000-0x000000000092F000-memory.dmp

Filesize
188KB

Download
memory/1492-157-0x0000000000E20000-0x0000000000EB3000-memory.dmp

Filesize
588KB

Download
memory/1492-156-0x0000000000900000-0x000000000092F000-memory.dmp

Filesize
188KB

Download
memory/1492-154-0x0000000000120000-0x0000000000127000-memory.dmp

Filesize
28KB

Download
memory/1740-153-0x0000000000000000-mapping.dmp

Download
memory/1948-152-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1948-149-0x0000000000B70000-0x0000000000B84000-memory.dmp

Filesize
80KB

Download
memory/1948-148-0x0000000001180000-0x00000000014CA000-memory.dmp

Filesize
3.3MB

Download
memory/1948-146-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1948-145-0x0000000000000000-mapping.dmp

Download
memory/2232-150-0x00000000086B0000-0x0000000008826000-memory.dmp

Filesize
1.5MB

Download
memory/2232-158-0x0000000008830000-0x00000000088CC000-memory.dmp

Filesize
624KB

Download
memory/2232-160-0x0000000008830000-0x00000000088CC000-memory.dmp

Filesize
624KB

Download
memory/4348-136-0x0000000005900000-0x0000000005922000-memory.dmp

Filesize
136KB

Download
memory/4348-135-0x0000000000160000-0x0000000000184000-memory.dmp

Filesize
144KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads