formbook | 4b376277cce9c1e365afb51b78046354176a443b45bb6bc123a3ea69710c6c65

General

Target

FacturaXdeXproformaXpdf.exe
Size

1.0MB
MD5

a9c36956e677bc83e033e20aba4f55f1
SHA1

94cfebd8cf0eedaa9338e20bf9879fef1198ee8f
SHA256

4b376277cce9c1e365afb51b78046354176a443b45bb6bc123a3ea69710c6c65
SHA512

2eff71db4ca0361799a2839a93ceab4ee7736c87fb1109a74e8da8974d8117d3e9634ac02d51a88542bddb4ed10d445cc27815701884eecd1e8f58a3ae684be4

Score

10^/10

formbook n7ak persistence rat spyware stealer suricata trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

n7ak

C2

http://www.kmresults.com/n7ak/

Decoy

modischoolcbse.com

theneverwinter.com

rszkjx-vps-hosting.website

fnihil.com

1pbet.com

nnowzscorrez.com

uaotgvjl.icu

starmapsqatar.com

ekisilani.com

extradeepsheets.com

jam-nins.com

buranly.com

orixentertainment.com

rawtech.energy

myol.guru

utex.club

jiapie.com

wowig.store

wweidlyyl.com

systaskautomation.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 3 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/1368-61-0x0000000000000000-mapping.dmp	formbook
behavioral1/memory/1368-65-0x0000000072480000-0x00000000724AE000-memory.dmp	formbook
behavioral1/memory/988-72-0x00000000001C0000-0x00000000001EE000-memory.dmp	formbook

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

FacturaXdeXproformaXpdf.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Windows\CurrentVersion\Run\Mwltktvz = "C:\\Users\\Public\\Libraries\\Mwltktvz\\zvtktlwM.url"	FacturaXdeXproformaXpdf.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

DpiScaling.exewscript.exe

description	pid	process	target process
PID 1368 set thread context of 1284	1368	DpiScaling.exe	Explorer.EXE
PID 988 set thread context of 1284	988	wscript.exe	Explorer.EXE

Suspicious behavior: EnumeratesProcesses 26 IoCs

Processes:

DpiScaling.exewscript.exe

pid	process
1368	DpiScaling.exe
1368	DpiScaling.exe
988	wscript.exe
988	wscript.exe
988	wscript.exe
988	wscript.exe
988	wscript.exe
988	wscript.exe
988	wscript.exe
988	wscript.exe
988	wscript.exe
988	wscript.exe
988	wscript.exe
988	wscript.exe
988	wscript.exe
988	wscript.exe
988	wscript.exe
988	wscript.exe
988	wscript.exe
988	wscript.exe
988	wscript.exe
988	wscript.exe
988	wscript.exe
988	wscript.exe
988	wscript.exe
988	wscript.exe

Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

DpiScaling.exewscript.exe

pid process

1368 DpiScaling.exe
1368 DpiScaling.exe
1368 DpiScaling.exe
988 wscript.exe
988 wscript.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

DpiScaling.exewscript.exe

description pid process

Token: SeDebugPrivilege 1368 DpiScaling.exe
Token: SeDebugPrivilege 988 wscript.exe

description	pid	process
Token: SeDebugPrivilege	1368	DpiScaling.exe
Token: SeDebugPrivilege	988	wscript.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

FacturaXdeXproformaXpdf.exeExplorer.EXEwscript.exe

description	pid	process	target process
PID 668 wrote to memory of 1368	668	FacturaXdeXproformaXpdf.exe	DpiScaling.exe
PID 668 wrote to memory of 1368	668	FacturaXdeXproformaXpdf.exe	DpiScaling.exe
PID 668 wrote to memory of 1368	668	FacturaXdeXproformaXpdf.exe	DpiScaling.exe
PID 668 wrote to memory of 1368	668	FacturaXdeXproformaXpdf.exe	DpiScaling.exe
PID 668 wrote to memory of 1368	668	FacturaXdeXproformaXpdf.exe	DpiScaling.exe
PID 668 wrote to memory of 1368	668	FacturaXdeXproformaXpdf.exe	DpiScaling.exe
PID 668 wrote to memory of 1368	668	FacturaXdeXproformaXpdf.exe	DpiScaling.exe
PID 1284 wrote to memory of 988	1284	Explorer.EXE	wscript.exe
PID 1284 wrote to memory of 988	1284	Explorer.EXE	wscript.exe
PID 1284 wrote to memory of 988	1284	Explorer.EXE	wscript.exe
PID 1284 wrote to memory of 988	1284	Explorer.EXE	wscript.exe
PID 988 wrote to memory of 1840	988	wscript.exe	cmd.exe
PID 988 wrote to memory of 1840	988	wscript.exe	cmd.exe
PID 988 wrote to memory of 1840	988	wscript.exe	cmd.exe
PID 988 wrote to memory of 1840	988	wscript.exe	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1284

C:\Users\Admin\AppData\Local\Temp\FacturaXdeXproformaXpdf.exe
"C:\Users\Admin\AppData\Local\Temp\FacturaXdeXproformaXpdf.exe"
2⤵
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:668

C:\Windows\SysWOW64\DpiScaling.exe
C:\Windows\System32\DpiScaling.exe
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:1368

C:\Windows\SysWOW64\wscript.exe
"C:\Windows\SysWOW64\wscript.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:988

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Windows\SysWOW64\DpiScaling.exe"
3⤵
PID:1840

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/668-56-0x0000000000241000-0x0000000000255000-memory.dmp

Filesize
80KB

Download
memory/668-57-0x0000000076231000-0x0000000076233000-memory.dmp

Filesize
8KB

Download
memory/668-55-0x0000000000220000-0x0000000000221000-memory.dmp

Filesize
4KB

Download
memory/988-74-0x0000000002280000-0x0000000002313000-memory.dmp

Filesize
588KB

Download
memory/988-71-0x0000000001F70000-0x0000000002273000-memory.dmp

Filesize
3.0MB

Download
memory/988-72-0x00000000001C0000-0x00000000001EE000-memory.dmp

Filesize
184KB

Download
memory/988-70-0x0000000000330000-0x0000000000356000-memory.dmp

Filesize
152KB

Download
memory/988-69-0x0000000000000000-mapping.dmp

Download
memory/1284-68-0x0000000007120000-0x00000000072A9000-memory.dmp

Filesize
1.5MB

Download
memory/1284-75-0x0000000006BD0000-0x0000000006D15000-memory.dmp

Filesize
1.3MB

Download
memory/1368-59-0x0000000000080000-0x0000000000081000-memory.dmp

Filesize
4KB

Download
memory/1368-67-0x00000000001C0000-0x00000000001D4000-memory.dmp

Filesize
80KB

Download
memory/1368-66-0x00000000021E0000-0x00000000024E3000-memory.dmp

Filesize
3.0MB

Download
memory/1368-64-0x0000000000090000-0x0000000000091000-memory.dmp

Filesize
4KB

Download
memory/1368-65-0x0000000072480000-0x00000000724AE000-memory.dmp

Filesize
184KB

Download
memory/1368-61-0x0000000000000000-mapping.dmp

Download
memory/1368-58-0x0000000072480000-0x00000000724AE000-memory.dmp

Filesize
184KB

Download
memory/1840-73-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads