formbook | 6ceb475f1ce2d253425aa3eab01c7dc18a205ab5eac8c2b5830d72f1795f3723

General

Target

FACTURA DE PROFORMA PDF.exe
Size

712KB
MD5

5827a80cfb204906f2ca19ef835c0b0f
SHA1

e8334cb029d265899092e56d76373f6e021d7622
SHA256

6ceb475f1ce2d253425aa3eab01c7dc18a205ab5eac8c2b5830d72f1795f3723
SHA512

b5d65381ba3e22b3b957ba7addfa60da28effd608295dfc222875464943ca555483ecfbec7588c9917b177926491bd26c1e89ab8bcc0a662f2970f4d332eafd9

Score

10^/10

formbook n7ak persistence rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

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

Formbook Payload 3 IoCs

rat

Processes:

resource	yara_rule
behavioral2/memory/408-118-0x0000000000000000-mapping.dmp	formbook
behavioral2/memory/408-120-0x0000000073C00000-0x0000000073C2E000-memory.dmp	formbook
behavioral2/memory/444-128-0x0000000000E10000-0x0000000000E3E000-memory.dmp	formbook

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

FACTURA DE PROFORMA PDF.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-369956170-74428499-1628131376-1000\Software\Microsoft\Windows\CurrentVersion\Run\Frjkovxbye = "C:\\Users\\Admin\\Contacts\\eybxvokjrF.url"	FACTURA DE PROFORMA PDF.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

logagent.exechkdsk.exe

description	pid	process	target process
PID 408 set thread context of 2472	408	logagent.exe	Explorer.EXE
PID 444 set thread context of 2472	444	chkdsk.exe	Explorer.EXE

Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry
T1012

System Information Discovery
T1082

Processes:

chkdsk.exe

description ioc process

Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier chkdsk.exe
Suspicious behavior: EnumeratesProcesses 10 IoCs

Processes:

logagent.exechkdsk.exe

pid process

408 logagent.exe
408 logagent.exe
408 logagent.exe
408 logagent.exe
444 chkdsk.exe
444 chkdsk.exe
444 chkdsk.exe
444 chkdsk.exe
444 chkdsk.exe
444 chkdsk.exe
Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

logagent.exechkdsk.exe

pid process

408 logagent.exe
408 logagent.exe
408 logagent.exe
444 chkdsk.exe
444 chkdsk.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

logagent.exechkdsk.exe

description pid process

Token: SeDebugPrivilege 408 logagent.exe
Token: SeDebugPrivilege 444 chkdsk.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	chkdsk.exe

pid	process
408	logagent.exe
408	logagent.exe
408	logagent.exe
408	logagent.exe
444	chkdsk.exe
444	chkdsk.exe
444	chkdsk.exe
444	chkdsk.exe
444	chkdsk.exe
444	chkdsk.exe

pid	process
408	logagent.exe
408	logagent.exe
408	logagent.exe
444	chkdsk.exe
444	chkdsk.exe

description	pid	process
Token: SeDebugPrivilege	408	logagent.exe
Token: SeDebugPrivilege	444	chkdsk.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

FACTURA DE PROFORMA PDF.exeExplorer.EXEchkdsk.exe

description	pid	process	target process
PID 3240 wrote to memory of 408	3240	FACTURA DE PROFORMA PDF.exe	logagent.exe
PID 3240 wrote to memory of 408	3240	FACTURA DE PROFORMA PDF.exe	logagent.exe
PID 3240 wrote to memory of 408	3240	FACTURA DE PROFORMA PDF.exe	logagent.exe
PID 3240 wrote to memory of 408	3240	FACTURA DE PROFORMA PDF.exe	logagent.exe
PID 3240 wrote to memory of 408	3240	FACTURA DE PROFORMA PDF.exe	logagent.exe
PID 3240 wrote to memory of 408	3240	FACTURA DE PROFORMA PDF.exe	logagent.exe
PID 2472 wrote to memory of 444	2472	Explorer.EXE	chkdsk.exe
PID 2472 wrote to memory of 444	2472	Explorer.EXE	chkdsk.exe
PID 2472 wrote to memory of 444	2472	Explorer.EXE	chkdsk.exe
PID 444 wrote to memory of 2320	444	chkdsk.exe	cmd.exe
PID 444 wrote to memory of 2320	444	chkdsk.exe	cmd.exe
PID 444 wrote to memory of 2320	444	chkdsk.exe	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:2472

C:\Users\Admin\AppData\Local\Temp\FACTURA DE PROFORMA PDF.exe
"C:\Users\Admin\AppData\Local\Temp\FACTURA DE PROFORMA PDF.exe"
2⤵
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:3240

C:\Windows\SysWOW64\logagent.exe
C:\Windows\System32\logagent.exe
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:408

C:\Windows\SysWOW64\chkdsk.exe
"C:\Windows\SysWOW64\chkdsk.exe"
2⤵
- Suspicious use of SetThreadContext
- Enumerates system info in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:444

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Windows\SysWOW64\logagent.exe"
3⤵
PID:2320

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

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

memory/408-123-0x0000000000840000-0x00000000008A7000-memory.dmp

Filesize
412KB

Download
memory/408-118-0x0000000000000000-mapping.dmp

Download
memory/408-119-0x00000000001D0000-0x00000000001D1000-memory.dmp

Filesize
4KB

Download
memory/408-121-0x0000000004550000-0x0000000004870000-memory.dmp

Filesize
3.1MB

Download
memory/408-120-0x0000000073C00000-0x0000000073C2E000-memory.dmp

Filesize
184KB

Download
memory/444-128-0x0000000000E10000-0x0000000000E3E000-memory.dmp

Filesize
184KB

Download
memory/444-130-0x0000000005430000-0x00000000054C3000-memory.dmp

Filesize
588KB

Download
memory/444-127-0x0000000001380000-0x000000000138A000-memory.dmp

Filesize
40KB

Download
memory/444-129-0x00000000056D0000-0x00000000059F0000-memory.dmp

Filesize
3.1MB

Download
memory/444-125-0x0000000000000000-mapping.dmp

Download
memory/2320-126-0x0000000000000000-mapping.dmp

Download
memory/2472-124-0x00000000064B0000-0x00000000065B5000-memory.dmp

Filesize
1.0MB

Download
memory/2472-131-0x0000000002C50000-0x0000000002CF4000-memory.dmp

Filesize
656KB

Download
memory/3240-116-0x00000000023B1000-0x00000000023C5000-memory.dmp

Filesize
80KB

Download
memory/3240-115-0x00000000023B0000-0x00000000023B1000-memory.dmp

Filesize
4KB

Download
memory/3240-117-0x0000000002210000-0x0000000002211000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads