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 2 IoCs

rat

Processes:

resource	yara_rule
behavioral2/memory/2196-139-0x0000000000400000-0x000000000042D000-memory.dmp	formbook
behavioral2/memory/2276-146-0x0000000000B20000-0x0000000000B4D000-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

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

raserver.exe

description	ioc	process
Key created	\Registry\Machine\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run	raserver.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\9RO0ZLWPZ0 = "C:\\Program Files (x86)\\Ejzih0\\edehxthxb8i0.exe"	raserver.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 value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	New PI PL.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	New PI PL.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

New PI PL.exeNew PI PL.exeraserver.exe

description	pid	process	target process
PID 396 set thread context of 2196	396	New PI PL.exe	New PI PL.exe
PID 2196 set thread context of 1052	2196	New PI PL.exe	Explorer.EXE
PID 2276 set thread context of 1052	2276	raserver.exe	Explorer.EXE

Drops file in Program Files directory 1 IoCs

Processes:

raserver.exe

description ioc process

File opened for modification C:\Program Files (x86)\Ejzih0\edehxthxb8i0.exe raserver.exe

description	ioc	process
File opened for modification	C:\Program Files (x86)\Ejzih0\edehxthxb8i0.exe	raserver.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

raserver.exe

description	ioc	process
Key created	\Registry\User\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	raserver.exe

Suspicious behavior: EnumeratesProcesses 30 IoCs

Processes:

New PI PL.exeNew PI PL.exeraserver.exe

pid	process
396	New PI PL.exe
396	New PI PL.exe
2196	New PI PL.exe
2196	New PI PL.exe
2196	New PI PL.exe
2196	New PI PL.exe
2276	raserver.exe
2276	raserver.exe
2276	raserver.exe
2276	raserver.exe
2276	raserver.exe
2276	raserver.exe
2276	raserver.exe
2276	raserver.exe
2276	raserver.exe
2276	raserver.exe
2276	raserver.exe
2276	raserver.exe
2276	raserver.exe
2276	raserver.exe
2276	raserver.exe
2276	raserver.exe
2276	raserver.exe
2276	raserver.exe
2276	raserver.exe
2276	raserver.exe
2276	raserver.exe
2276	raserver.exe
2276	raserver.exe
2276	raserver.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

1052 Explorer.EXE
Suspicious behavior: MapViewOfSection 7 IoCs

Processes:

New PI PL.exeraserver.exe

pid process

2196 New PI PL.exe
2196 New PI PL.exe
2196 New PI PL.exe
2276 raserver.exe
2276 raserver.exe
2276 raserver.exe
2276 raserver.exe

pid	process
1052	Explorer.EXE

pid	process
2196	New PI PL.exe
2196	New PI PL.exe
2196	New PI PL.exe
2276	raserver.exe
2276	raserver.exe
2276	raserver.exe
2276	raserver.exe

Suspicious use of AdjustPrivilegeToken 7 IoCs

Processes:

New PI PL.exeNew PI PL.exeraserver.exeExplorer.EXE

description	pid	process
Token: SeDebugPrivilege	396	New PI PL.exe
Token: SeDebugPrivilege	2196	New PI PL.exe
Token: SeDebugPrivilege	2276	raserver.exe
Token: SeShutdownPrivilege	1052	Explorer.EXE
Token: SeCreatePagefilePrivilege	1052	Explorer.EXE
Token: SeShutdownPrivilege	1052	Explorer.EXE
Token: SeCreatePagefilePrivilege	1052	Explorer.EXE

Suspicious use of WriteProcessMemory 21 IoCs

Processes:

New PI PL.exeExplorer.EXEraserver.exe

description	pid	process	target process
PID 396 wrote to memory of 3384	396	New PI PL.exe	New PI PL.exe
PID 396 wrote to memory of 3384	396	New PI PL.exe	New PI PL.exe
PID 396 wrote to memory of 3384	396	New PI PL.exe	New PI PL.exe
PID 396 wrote to memory of 2196	396	New PI PL.exe	New PI PL.exe
PID 396 wrote to memory of 2196	396	New PI PL.exe	New PI PL.exe
PID 396 wrote to memory of 2196	396	New PI PL.exe	New PI PL.exe
PID 396 wrote to memory of 2196	396	New PI PL.exe	New PI PL.exe
PID 396 wrote to memory of 2196	396	New PI PL.exe	New PI PL.exe
PID 396 wrote to memory of 2196	396	New PI PL.exe	New PI PL.exe
PID 1052 wrote to memory of 2276	1052	Explorer.EXE	raserver.exe
PID 1052 wrote to memory of 2276	1052	Explorer.EXE	raserver.exe
PID 1052 wrote to memory of 2276	1052	Explorer.EXE	raserver.exe
PID 2276 wrote to memory of 3080	2276	raserver.exe	cmd.exe
PID 2276 wrote to memory of 3080	2276	raserver.exe	cmd.exe
PID 2276 wrote to memory of 3080	2276	raserver.exe	cmd.exe
PID 2276 wrote to memory of 4100	2276	raserver.exe	cmd.exe
PID 2276 wrote to memory of 4100	2276	raserver.exe	cmd.exe
PID 2276 wrote to memory of 4100	2276	raserver.exe	cmd.exe
PID 2276 wrote to memory of 3900	2276	raserver.exe	Firefox.exe
PID 2276 wrote to memory of 3900	2276	raserver.exe	Firefox.exe
PID 2276 wrote to memory of 3900	2276	raserver.exe	Firefox.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1052

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 behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:396

C:\Users\Admin\AppData\Local\Temp\New PI PL.exe
"C:\Users\Admin\AppData\Local\Temp\New PI PL.exe"
3⤵
PID:3384

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:2196

C:\Windows\SysWOW64\raserver.exe
"C:\Windows\SysWOW64\raserver.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:2276

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\New PI PL.exe"
3⤵
PID:3080

C:\Windows\SysWOW64\cmd.exe
/c copy "C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Login Data" "C:\Users\Admin\AppData\Local\Temp\DB1" /V
3⤵
PID:4100

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:3900

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

2

T1497

Modify Registry

2

T1112

Credential Access

Credentials in Files

1

T1081

Discovery

Query Registry

4

T1012

Virtualization/Sandbox Evasion

2

T1497

System Information Discovery

2

T1082

Peripheral Device Discovery

1

T1120

Lateral Movement

Collection

Data from Local System

1

T1005

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\DB1
Filesize
40KB

MD5
b608d407fc15adea97c26936bc6f03f6

SHA1
953e7420801c76393902c0d6bb56148947e41571

SHA256
b281ce54125d4250a80f48fcc02a8eea53f2c35c3b726e2512c3d493da0013bf

SHA512
cc96ddf4bf90d6aaa9d86803cb2aa30cd8e9b295aee1bd5544b88aeab63dc60bb1d4641e846c9771bab51aabbfbcd984c6d3ee83b96f5b65d09c0841d464b9e4

Download Submit
memory/396-130-0x0000000000370000-0x0000000000462000-memory.dmp

Filesize
968KB

Download
memory/396-131-0x0000000004EB0000-0x0000000004F4C000-memory.dmp

Filesize
624KB

Download
memory/396-132-0x0000000005500000-0x0000000005AA4000-memory.dmp

Filesize
5.6MB

Download
memory/396-133-0x0000000004F50000-0x0000000004FE2000-memory.dmp

Filesize
584KB

Download
memory/396-134-0x0000000004E10000-0x0000000004E1A000-memory.dmp

Filesize
40KB

Download
memory/396-135-0x00000000050E0000-0x0000000005136000-memory.dmp

Filesize
344KB

Download
memory/396-136-0x0000000005C20000-0x0000000005C86000-memory.dmp

Filesize
408KB

Download
memory/1052-150-0x0000000002F60000-0x0000000003016000-memory.dmp

Filesize
728KB

Download
memory/1052-143-0x0000000002B10000-0x0000000002BE3000-memory.dmp

Filesize
844KB

Download
memory/2196-140-0x0000000000E70000-0x00000000011BA000-memory.dmp

Filesize
3.3MB

Download
memory/2196-142-0x0000000000E00000-0x0000000000E14000-memory.dmp

Filesize
80KB

Download
memory/2196-139-0x0000000000400000-0x000000000042D000-memory.dmp

Filesize
180KB

Download
memory/2196-138-0x0000000000000000-mapping.dmp

Download
memory/2276-144-0x0000000000000000-mapping.dmp

Download
memory/2276-146-0x0000000000B20000-0x0000000000B4D000-memory.dmp

Filesize
180KB

Download
memory/2276-145-0x0000000000970000-0x000000000098F000-memory.dmp

Filesize
124KB

Download
memory/2276-147-0x0000000002C30000-0x0000000002F7A000-memory.dmp

Filesize
3.3MB

Download
memory/2276-149-0x0000000002F80000-0x0000000003013000-memory.dmp

Filesize
588KB

Download
memory/3080-148-0x0000000000000000-mapping.dmp

Download
memory/3384-137-0x0000000000000000-mapping.dmp

Download
memory/4100-151-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads