formbook | a192572433f8f1a41f0035e040f0f455608b6eb9695cbb87c9734f3a4bf7d4cc

General

Target

imágenes de productos pdf.exe
Size

973KB
MD5

1e01b5e7d7e52dc849c271f8327fabd6
SHA1

efa560d817c867c38c4a75519830abacb4be2812
SHA256

a192572433f8f1a41f0035e040f0f455608b6eb9695cbb87c9734f3a4bf7d4cc
SHA512

6d7e41f576f88d6a2c3ab951db921def360cd8fe2db8dc542edfbe93a6f8ab10d6ba96538239ac158bdb43f2b14bfc562da6870fd85297c3690b40c5b5b3658e

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
behavioral2/memory/2300-117-0x0000000000000000-mapping.dmp	formbook
behavioral2/memory/2300-119-0x0000000072480000-0x00000000724AE000-memory.dmp	formbook
behavioral2/memory/664-126-0x0000000000390000-0x00000000003BE000-memory.dmp	formbook

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

imágenes de productos pdf.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2481030822-2828258191-1606198294-1000\Software\Microsoft\Windows\CurrentVersion\Run\Gsdjit = "C:\\Users\\Public\\tijdsG.url"	imágenes de productos pdf.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

mobsync.exechkdsk.exe

description	pid	process	target process
PID 2300 set thread context of 3000	2300	mobsync.exe	Explorer.EXE
PID 664 set thread context of 3000	664	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

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

Suspicious behavior: EnumeratesProcesses 56 IoCs

Processes:

mobsync.exechkdsk.exe

pid	process
2300	mobsync.exe
2300	mobsync.exe
2300	mobsync.exe
2300	mobsync.exe
664	chkdsk.exe
664	chkdsk.exe
664	chkdsk.exe
664	chkdsk.exe
664	chkdsk.exe
664	chkdsk.exe
664	chkdsk.exe
664	chkdsk.exe
664	chkdsk.exe
664	chkdsk.exe
664	chkdsk.exe
664	chkdsk.exe
664	chkdsk.exe
664	chkdsk.exe
664	chkdsk.exe
664	chkdsk.exe
664	chkdsk.exe
664	chkdsk.exe
664	chkdsk.exe
664	chkdsk.exe
664	chkdsk.exe
664	chkdsk.exe
664	chkdsk.exe
664	chkdsk.exe
664	chkdsk.exe
664	chkdsk.exe
664	chkdsk.exe
664	chkdsk.exe
664	chkdsk.exe
664	chkdsk.exe
664	chkdsk.exe
664	chkdsk.exe
664	chkdsk.exe
664	chkdsk.exe
664	chkdsk.exe
664	chkdsk.exe
664	chkdsk.exe
664	chkdsk.exe
664	chkdsk.exe
664	chkdsk.exe
664	chkdsk.exe
664	chkdsk.exe
664	chkdsk.exe
664	chkdsk.exe
664	chkdsk.exe
664	chkdsk.exe
664	chkdsk.exe
664	chkdsk.exe
664	chkdsk.exe
664	chkdsk.exe
664	chkdsk.exe
664	chkdsk.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

3000 Explorer.EXE
Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

mobsync.exechkdsk.exe

pid process

2300 mobsync.exe
2300 mobsync.exe
2300 mobsync.exe
664 chkdsk.exe
664 chkdsk.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

mobsync.exechkdsk.exe

description pid process

Token: SeDebugPrivilege 2300 mobsync.exe
Token: SeDebugPrivilege 664 chkdsk.exe

pid	process
3000	Explorer.EXE

description	pid	process
Token: SeDebugPrivilege	2300	mobsync.exe
Token: SeDebugPrivilege	664	chkdsk.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

imágenes de productos pdf.exeExplorer.EXEchkdsk.exe

description	pid	process	target process
PID 3720 wrote to memory of 2300	3720	imágenes de productos pdf.exe	mobsync.exe
PID 3720 wrote to memory of 2300	3720	imágenes de productos pdf.exe	mobsync.exe
PID 3720 wrote to memory of 2300	3720	imágenes de productos pdf.exe	mobsync.exe
PID 3720 wrote to memory of 2300	3720	imágenes de productos pdf.exe	mobsync.exe
PID 3720 wrote to memory of 2300	3720	imágenes de productos pdf.exe	mobsync.exe
PID 3720 wrote to memory of 2300	3720	imágenes de productos pdf.exe	mobsync.exe
PID 3000 wrote to memory of 664	3000	Explorer.EXE	chkdsk.exe
PID 3000 wrote to memory of 664	3000	Explorer.EXE	chkdsk.exe
PID 3000 wrote to memory of 664	3000	Explorer.EXE	chkdsk.exe
PID 664 wrote to memory of 3876	664	chkdsk.exe	cmd.exe
PID 664 wrote to memory of 3876	664	chkdsk.exe	cmd.exe
PID 664 wrote to memory of 3876	664	chkdsk.exe	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:3000

C:\Users\Admin\AppData\Local\Temp\imágenes de productos pdf.exe
"C:\Users\Admin\AppData\Local\Temp\imágenes de productos pdf.exe"
2⤵
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:3720

C:\Windows\SysWOW64\mobsync.exe
C:\Windows\System32\mobsync.exe
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:2300

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:664

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Windows\SysWOW64\mobsync.exe"
3⤵
PID:3876

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/664-124-0x0000000000000000-mapping.dmp

Download
memory/664-129-0x00000000008B0000-0x0000000000943000-memory.dmp

Filesize
588KB

Download
memory/664-128-0x0000000004B30000-0x0000000004E50000-memory.dmp

Filesize
3.1MB

Download
memory/664-125-0x0000000000B20000-0x0000000000B2A000-memory.dmp

Filesize
40KB

Download
memory/664-126-0x0000000000390000-0x00000000003BE000-memory.dmp

Filesize
184KB

Download
memory/2300-118-0x0000000003260000-0x0000000003261000-memory.dmp

Filesize
4KB

Download
memory/2300-122-0x0000000005070000-0x0000000005084000-memory.dmp

Filesize
80KB

Download
memory/2300-121-0x00000000050E0000-0x0000000005400000-memory.dmp

Filesize
3.1MB

Download
memory/2300-119-0x0000000072480000-0x00000000724AE000-memory.dmp

Filesize
184KB

Download
memory/2300-117-0x0000000000000000-mapping.dmp

Download
memory/3000-123-0x0000000004EC0000-0x0000000005027000-memory.dmp

Filesize
1.4MB

Download
memory/3000-130-0x00000000024F0000-0x00000000025CF000-memory.dmp

Filesize
892KB

Download
memory/3720-115-0x0000000000600000-0x000000000074A000-memory.dmp

Filesize
1.3MB

Download
memory/3720-116-0x0000000002271000-0x0000000002285000-memory.dmp

Filesize
80KB

Download
memory/3876-127-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads