formbook | 26d664ca784fb1e580452f247fcf9fa04520702309d3af5ff0a0fc222fb625eb

General

Target

orden de compra.exe
Size

519KB
MD5

f54815ffc4db44ce06b3012f9d014f31
SHA1

2f0939b658ef735025b0c76c20c0101003076529
SHA256

e3262e18e77da24473b5af2117f10a3121c8ed1a832c6e1b0f5a8f0d7e5fecda
SHA512

76c1152640c367b4cefae86ec8c2dabc434659e29c7bcddc3a2af37c39fcf445a746021204a695f6b739d89a145331a28348cda4060c9668e2224d795505b9c7

Score

10^/10

formbook kvsz persistence rat spyware stealer suricata trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

kvsz

Decoy

okashyns.com

sbsgamedaejeon-two.com

drb77.com

top5dating.com

websprings.online

voizers.com

zenith.site

lahistoriade.com

qv85.com

armandonieto.com

priestvedic.com

jessandjeff.net

magic-desktop.com

jitaji.com

ldmeili.com

yuwanqingmy.com

buzhouorg.com

chaiseloungereviews.com

m2g8way.com

freespin-support.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/1996-64-0x0000000000400000-0x000000000042E000-memory.dmp	formbook
behavioral1/memory/1996-65-0x000000000041ECA0-mapping.dmp	formbook
behavioral1/memory/2020-73-0x0000000000100000-0x000000000012E000-memory.dmp	formbook

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

NETSTAT.EXE

description	ioc	process
Key created	\Registry\Machine\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run	NETSTAT.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\GZVHTLWH = "C:\\Program Files (x86)\\O8pj81\\updateuxe.exe"	NETSTAT.EXE

Suspicious use of SetThreadContext 3 IoCs

Processes:

orden de compra.exeRegSvcs.exeNETSTAT.EXE

description	pid	process	target process
PID 1528 set thread context of 1996	1528	orden de compra.exe	RegSvcs.exe
PID 1996 set thread context of 1256	1996	RegSvcs.exe	Explorer.EXE
PID 2020 set thread context of 1256	2020	NETSTAT.EXE	Explorer.EXE

Drops file in Program Files directory 1 IoCs

Processes:

NETSTAT.EXE

description ioc process

File opened for modification C:\Program Files (x86)\O8pj81\updateuxe.exe NETSTAT.EXE
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task
T1053

Processes:

schtasks.exe

pid process

1176 schtasks.exe
Gathers network information 2 TTPs 1 IoCs
Uses commandline utility to view network configuration.

System Information Discovery
T1082

Command-Line Interface
T1059

Processes:

NETSTAT.EXE

pid process

2020 NETSTAT.EXE

description	ioc	process
File opened for modification	C:\Program Files (x86)\O8pj81\updateuxe.exe	NETSTAT.EXE

pid	process
1176	schtasks.exe

pid	process
2020	NETSTAT.EXE

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

NETSTAT.EXE

description	ioc	process
Key created	\Registry\User\S-1-5-21-2277218442-1199762539-2004043321-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	NETSTAT.EXE

Suspicious behavior: EnumeratesProcesses 18 IoCs

Processes:

orden de compra.exeRegSvcs.exeNETSTAT.EXE

pid	process
1528	orden de compra.exe
1528	orden de compra.exe
1528	orden de compra.exe
1996	RegSvcs.exe
1996	RegSvcs.exe
2020	NETSTAT.EXE
2020	NETSTAT.EXE
2020	NETSTAT.EXE
2020	NETSTAT.EXE
2020	NETSTAT.EXE
2020	NETSTAT.EXE
2020	NETSTAT.EXE
2020	NETSTAT.EXE
2020	NETSTAT.EXE
2020	NETSTAT.EXE
2020	NETSTAT.EXE
2020	NETSTAT.EXE
2020	NETSTAT.EXE

Suspicious behavior: MapViewOfSection 7 IoCs

Processes:

RegSvcs.exeNETSTAT.EXE

pid process

1996 RegSvcs.exe
1996 RegSvcs.exe
1996 RegSvcs.exe
2020 NETSTAT.EXE
2020 NETSTAT.EXE
2020 NETSTAT.EXE
2020 NETSTAT.EXE

pid	process
1996	RegSvcs.exe
1996	RegSvcs.exe
1996	RegSvcs.exe
2020	NETSTAT.EXE
2020	NETSTAT.EXE
2020	NETSTAT.EXE
2020	NETSTAT.EXE

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

orden de compra.exeRegSvcs.exeNETSTAT.EXEExplorer.EXE

description	pid	process
Token: SeDebugPrivilege	1528	orden de compra.exe
Token: SeDebugPrivilege	1996	RegSvcs.exe
Token: SeDebugPrivilege	2020	NETSTAT.EXE
Token: SeShutdownPrivilege	1256	Explorer.EXE

Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

Explorer.EXE

pid process

1256 Explorer.EXE
1256 Explorer.EXE
Suspicious use of SendNotifyMessage 2 IoCs

Processes:

Explorer.EXE

pid process

1256 Explorer.EXE
1256 Explorer.EXE

pid	process
1256	Explorer.EXE
1256	Explorer.EXE

pid	process
1256	Explorer.EXE
1256	Explorer.EXE

Suspicious use of WriteProcessMemory 27 IoCs

Processes:

orden de compra.exeExplorer.EXENETSTAT.EXE

description	pid	process	target process
PID 1528 wrote to memory of 1176	1528	orden de compra.exe	schtasks.exe
PID 1528 wrote to memory of 1176	1528	orden de compra.exe	schtasks.exe
PID 1528 wrote to memory of 1176	1528	orden de compra.exe	schtasks.exe
PID 1528 wrote to memory of 1176	1528	orden de compra.exe	schtasks.exe
PID 1528 wrote to memory of 1996	1528	orden de compra.exe	RegSvcs.exe
PID 1528 wrote to memory of 1996	1528	orden de compra.exe	RegSvcs.exe
PID 1528 wrote to memory of 1996	1528	orden de compra.exe	RegSvcs.exe
PID 1528 wrote to memory of 1996	1528	orden de compra.exe	RegSvcs.exe
PID 1528 wrote to memory of 1996	1528	orden de compra.exe	RegSvcs.exe
PID 1528 wrote to memory of 1996	1528	orden de compra.exe	RegSvcs.exe
PID 1528 wrote to memory of 1996	1528	orden de compra.exe	RegSvcs.exe
PID 1528 wrote to memory of 1996	1528	orden de compra.exe	RegSvcs.exe
PID 1528 wrote to memory of 1996	1528	orden de compra.exe	RegSvcs.exe
PID 1528 wrote to memory of 1996	1528	orden de compra.exe	RegSvcs.exe
PID 1256 wrote to memory of 2020	1256	Explorer.EXE	NETSTAT.EXE
PID 1256 wrote to memory of 2020	1256	Explorer.EXE	NETSTAT.EXE
PID 1256 wrote to memory of 2020	1256	Explorer.EXE	NETSTAT.EXE
PID 1256 wrote to memory of 2020	1256	Explorer.EXE	NETSTAT.EXE
PID 2020 wrote to memory of 1472	2020	NETSTAT.EXE	cmd.exe
PID 2020 wrote to memory of 1472	2020	NETSTAT.EXE	cmd.exe
PID 2020 wrote to memory of 1472	2020	NETSTAT.EXE	cmd.exe
PID 2020 wrote to memory of 1472	2020	NETSTAT.EXE	cmd.exe
PID 2020 wrote to memory of 1072	2020	NETSTAT.EXE	Firefox.exe
PID 2020 wrote to memory of 1072	2020	NETSTAT.EXE	Firefox.exe
PID 2020 wrote to memory of 1072	2020	NETSTAT.EXE	Firefox.exe
PID 2020 wrote to memory of 1072	2020	NETSTAT.EXE	Firefox.exe
PID 2020 wrote to memory of 1072	2020	NETSTAT.EXE	Firefox.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1256

C:\Users\Admin\AppData\Local\Temp\orden de compra.exe
"C:\Users\Admin\AppData\Local\Temp\orden de compra.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1528

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\mAPeycREvI" /XML "C:\Users\Admin\AppData\Local\Temp\tmp427D.tmp"
3⤵
- Creates scheduled task(s)
PID:1176

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
"{path}"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:1996

C:\Windows\SysWOW64\NETSTAT.EXE
"C:\Windows\SysWOW64\NETSTAT.EXE"
2⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Drops file in Program Files directory
- Gathers network information
- Modifies Internet Explorer settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2020

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
3⤵
PID:1472

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:1072

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1

T1053

Command-Line Interface

1

T1059

Persistence

Registry Run Keys / Startup Folder

1

T1060

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Modify Registry

2

T1112

Credential Access

Discovery

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp427D.tmp
Filesize
1KB

MD5
c3e5c8da46870973b5e31a2b41f9db4d

SHA1
7687c5e52541824beeeac81aceb25359016d9340

SHA256
f452c71f6342efaad0f2ff8635ebac65aff7e8641602d6dd2007ff082e41c71c

SHA512
930e5c594cff03effec5e6709860e088c7458129c03c35dee8e5af79081bd90eee7fe169876ce59ee0f52bf7e71ab6cd7ae5301ea8c7de0bec9237c00ee3cc19

Download Submit
memory/1176-59-0x0000000000000000-mapping.dmp

Download
memory/1256-76-0x0000000006600000-0x00000000066CA000-memory.dmp

Filesize
808KB

Download
memory/1256-69-0x0000000004200000-0x00000000042E7000-memory.dmp

Filesize
924KB

Download
memory/1472-71-0x0000000000000000-mapping.dmp

Download
memory/1528-56-0x00000000003D0000-0x00000000003E0000-memory.dmp

Filesize
64KB

Download
memory/1528-57-0x0000000004C90000-0x0000000004CE4000-memory.dmp

Filesize
336KB

Download
memory/1528-55-0x0000000075DF1000-0x0000000075DF3000-memory.dmp

Filesize
8KB

Download
memory/1528-54-0x00000000009E0000-0x0000000000A68000-memory.dmp

Filesize
544KB

Download
memory/1528-58-0x0000000002000000-0x0000000002034000-memory.dmp

Filesize
208KB

Download
memory/1996-64-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/1996-67-0x00000000008D0000-0x0000000000BD3000-memory.dmp

Filesize
3.0MB

Download
memory/1996-68-0x00000000001E0000-0x00000000001F4000-memory.dmp

Filesize
80KB

Download
memory/1996-65-0x000000000041ECA0-mapping.dmp

Download
memory/1996-62-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/1996-61-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/2020-70-0x0000000000000000-mapping.dmp

Download
memory/2020-72-0x0000000000CA0000-0x0000000000CA9000-memory.dmp

Filesize
36KB

Download
memory/2020-73-0x0000000000100000-0x000000000012E000-memory.dmp

Filesize
184KB

Download
memory/2020-74-0x00000000020B0000-0x00000000023B3000-memory.dmp

Filesize
3.0MB

Download
memory/2020-75-0x0000000000B00000-0x0000000000B93000-memory.dmp

Filesize
588KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads