formbook | 3b4194ae562a6c919c783536050e827de39ba0b00c6df58cf9e7083c19dddf53

General

Target

New PI PL.exe
Size

945KB
MD5

332e036148c15d2453735b513bb8d693
SHA1

ffe088da337a5d87baeb1f3de49f83ff6a607c0a
SHA256

d4cca60154fcc667ada19dffbac16f84b51691a540daf850a766b91bd46544fe
SHA512

099a9ad6dd681e580e7ab0ab1798a51ccb9ce92a9ed001e7a8e49f0c57a714932cbc20c06670683fdb67be1ab88ba4b54e4f67568884deed1bc8921ecee4aed9

Score

10^/10

formbook wus evasion persistence rat spyware stealer suricata trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

wus

Decoy

generativecoaching.net

skillmosaic.com

practicalmaster.com

12aminmiami.com

instagramsupport.online

mainelse.net

qqysmr.com

wealthxd.com

videoadscreator.com

dltzscl.com

cotaforjulyans.com

forcend.com

shinjukufilm.com

bsq30.com

dragonsrose.net

loganbuys.com

wwwfitnessymusica.com

microbladingdublin.com

corporateiconic.com

sunshinegroupnyc.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 4 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/1180-62-0x0000000000400000-0x000000000042D000-memory.dmp	formbook
behavioral1/memory/1180-63-0x000000000041E290-mapping.dmp	formbook
behavioral1/memory/1180-65-0x0000000000400000-0x000000000042D000-memory.dmp	formbook
behavioral1/memory/2044-72-0x0000000000080000-0x00000000000AD000-memory.dmp	formbook

Looks for VirtualBox Guest Additions in registry 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497
Looks for VMWare Tools registry key 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497

Checks BIOS information in registry 2 TTPs 2 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

New PI PL.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	New PI PL.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	New PI PL.exe

Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

280 cmd.exe

pid	process
280	cmd.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\MJOXV418GJ = "C:\\Program Files (x86)\\Ktbcdzlnh\\msnng4x.exe"	svchost.exe
Key created	\Registry\Machine\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run	svchost.exe

Maps connected drives based on registry 3 TTPs 2 IoCs

Disk information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Processes:

New PI PL.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	New PI PL.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0	New PI PL.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

New PI PL.exeNew PI PL.exesvchost.exe

description	pid	process	target process
PID 1120 set thread context of 1180	1120	New PI PL.exe	New PI PL.exe
PID 1180 set thread context of 1396	1180	New PI PL.exe	Explorer.EXE
PID 2044 set thread context of 1396	2044	svchost.exe	Explorer.EXE

Drops file in Program Files directory 1 IoCs

Processes:

svchost.exe

description ioc process

File opened for modification C:\Program Files (x86)\Ktbcdzlnh\msnng4x.exe svchost.exe

description	ioc	process
File opened for modification	C:\Program Files (x86)\Ktbcdzlnh\msnng4x.exe	svchost.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	process
Key created	\Registry\User\S-1-5-21-790309383-526510583-3802439154-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	svchost.exe

Suspicious behavior: EnumeratesProcesses 14 IoCs

Processes:

New PI PL.exesvchost.exe

pid	process
1180	New PI PL.exe
1180	New PI PL.exe
2044	svchost.exe
2044	svchost.exe
2044	svchost.exe
2044	svchost.exe
2044	svchost.exe
2044	svchost.exe
2044	svchost.exe
2044	svchost.exe
2044	svchost.exe
2044	svchost.exe
2044	svchost.exe
2044	svchost.exe

Suspicious behavior: MapViewOfSection 7 IoCs

Processes:

New PI PL.exesvchost.exe

pid process

1180 New PI PL.exe
1180 New PI PL.exe
1180 New PI PL.exe
2044 svchost.exe
2044 svchost.exe
2044 svchost.exe
2044 svchost.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

New PI PL.exesvchost.exe

description pid process

Token: SeDebugPrivilege 1180 New PI PL.exe
Token: SeDebugPrivilege 2044 svchost.exe
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

Explorer.EXE

pid process

1396 Explorer.EXE
1396 Explorer.EXE
Suspicious use of SendNotifyMessage 2 IoCs

Processes:

Explorer.EXE

pid process

1396 Explorer.EXE
1396 Explorer.EXE

description	pid	process
Token: SeDebugPrivilege	1180	New PI PL.exe
Token: SeDebugPrivilege	2044	svchost.exe

pid	process
1396	Explorer.EXE
1396	Explorer.EXE

pid	process
1396	Explorer.EXE
1396	Explorer.EXE

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

New PI PL.exeExplorer.EXEsvchost.exe

description	pid	process	target process
PID 1120 wrote to memory of 1180	1120	New PI PL.exe	New PI PL.exe
PID 1120 wrote to memory of 1180	1120	New PI PL.exe	New PI PL.exe
PID 1120 wrote to memory of 1180	1120	New PI PL.exe	New PI PL.exe
PID 1120 wrote to memory of 1180	1120	New PI PL.exe	New PI PL.exe
PID 1120 wrote to memory of 1180	1120	New PI PL.exe	New PI PL.exe
PID 1120 wrote to memory of 1180	1120	New PI PL.exe	New PI PL.exe
PID 1120 wrote to memory of 1180	1120	New PI PL.exe	New PI PL.exe
PID 1396 wrote to memory of 2044	1396	Explorer.EXE	svchost.exe
PID 1396 wrote to memory of 2044	1396	Explorer.EXE	svchost.exe
PID 1396 wrote to memory of 2044	1396	Explorer.EXE	svchost.exe
PID 1396 wrote to memory of 2044	1396	Explorer.EXE	svchost.exe
PID 2044 wrote to memory of 280	2044	svchost.exe	cmd.exe
PID 2044 wrote to memory of 280	2044	svchost.exe	cmd.exe
PID 2044 wrote to memory of 280	2044	svchost.exe	cmd.exe
PID 2044 wrote to memory of 280	2044	svchost.exe	cmd.exe
PID 2044 wrote to memory of 1968	2044	svchost.exe	Firefox.exe
PID 2044 wrote to memory of 1968	2044	svchost.exe	Firefox.exe
PID 2044 wrote to memory of 1968	2044	svchost.exe	Firefox.exe
PID 2044 wrote to memory of 1968	2044	svchost.exe	Firefox.exe
PID 2044 wrote to memory of 1968	2044	svchost.exe	Firefox.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1396

C:\Users\Admin\AppData\Local\Temp\New PI PL.exe
"C:\Users\Admin\AppData\Local\Temp\New PI PL.exe"
2⤵
- Checks BIOS information in registry
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1120

C:\Users\Admin\AppData\Local\Temp\New PI PL.exe
"C:\Users\Admin\AppData\Local\Temp\New PI PL.exe"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:1180

C:\Windows\SysWOW64\svchost.exe
"C:\Windows\SysWOW64\svchost.exe"
2⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Drops file in Program Files directory
- Modifies Internet Explorer settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2044

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\New PI PL.exe"
3⤵
- Deletes itself
PID:280

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:1968

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

Virtualization/Sandbox Evasion

2

T1497

Credential Access

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

2

T1082

Virtualization/Sandbox Evasion

2

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/280-70-0x0000000000000000-mapping.dmp

Download
memory/1120-54-0x0000000000DC0000-0x0000000000EB2000-memory.dmp

Filesize
968KB

Download
memory/1120-55-0x00000000759E1000-0x00000000759E3000-memory.dmp

Filesize
8KB

Download
memory/1120-56-0x0000000000330000-0x000000000033A000-memory.dmp

Filesize
40KB

Download
memory/1120-57-0x00000000042C0000-0x000000000430C000-memory.dmp

Filesize
304KB

Download
memory/1120-58-0x0000000004480000-0x00000000044B4000-memory.dmp

Filesize
208KB

Download
memory/1180-66-0x0000000000920000-0x0000000000C23000-memory.dmp

Filesize
3.0MB

Download
memory/1180-63-0x000000000041E290-mapping.dmp

Download
memory/1180-65-0x0000000000400000-0x000000000042D000-memory.dmp

Filesize
180KB

Download
memory/1180-60-0x0000000000400000-0x000000000042D000-memory.dmp

Filesize
180KB

Download
memory/1180-68-0x0000000000190000-0x00000000001A4000-memory.dmp

Filesize
80KB

Download
memory/1180-62-0x0000000000400000-0x000000000042D000-memory.dmp

Filesize
180KB

Download
memory/1180-59-0x0000000000400000-0x000000000042D000-memory.dmp

Filesize
180KB

Download
memory/1396-75-0x0000000004AB0000-0x0000000004B78000-memory.dmp

Filesize
800KB

Download
memory/1396-67-0x00000000049F0000-0x0000000004AA4000-memory.dmp

Filesize
720KB

Download
memory/2044-69-0x0000000000000000-mapping.dmp

Download
memory/2044-72-0x0000000000080000-0x00000000000AD000-memory.dmp

Filesize
180KB

Download
memory/2044-73-0x0000000000810000-0x0000000000B13000-memory.dmp

Filesize
3.0MB

Download
memory/2044-74-0x0000000000630000-0x00000000006C3000-memory.dmp

Filesize
588KB

Download
memory/2044-71-0x0000000000BE0000-0x0000000000BE8000-memory.dmp

Filesize
32KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads