formbook | a49faa221eca9dddac32e17773b35fa4e3f9c34c3869d27bf9776e281be3b28c

General

Target

PO##4354267813...pdf.exe
Size

336KB
MD5

c5fb3b2e9f90517e533c327808e3dc2d
SHA1

2a36c1413dc4276c3c1f57cf392f93285380a93a
SHA256

112b6fe2084ca3501c8a98a9cd90f60ce691a438864be736b049062379195818
SHA512

eb254fd0b9577f382b3b29d999a0f43e1643e85aeca13fd0887eadf33a77a116612c739297e90f6b0aadb392e5aefa1a435b9bf6443e7c21acc62c3a88c38054

Score

10^/10

formbook tnk persistence rat spyware stealer suricata trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

tnk

Decoy

lafioletto.com

mgiuj.com

wolllafvixzies.win

wwwsbvip123.com

nadyaasnae.com

noticesinvoice2017.com

intercapati.com

tg8895.com

9245654874.com

lytsxc.info

rffuf3-liquidwebsites.com

verguet.com

peinturefleursetfemmes.com

xttmrama.com

cryptoinvestmentideas.com

kikumasacarparts.win

freeapk1.com

tasteofimagination.com

gxzyoa.com

cq-mingwei.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/2016-61-0x0000000000400000-0x000000000042D000-memory.dmp	formbook
behavioral1/memory/2016-62-0x000000000041E320-mapping.dmp	formbook
behavioral1/memory/1632-71-0x0000000000080000-0x00000000000AD000-memory.dmp	formbook

Adds policy Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

msdt.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\MPXPSJ70QZ = "C:\\Program Files (x86)\\Mrfidu\\msz4dtqvah.exe"	msdt.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	msdt.exe

Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

580 cmd.exe

pid	process
580	cmd.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

PO##4354267813...pdf.exePO##4354267813...pdf.exemsdt.exe

description	pid	process	target process
PID 1228 set thread context of 2016	1228	PO##4354267813...pdf.exe	PO##4354267813...pdf.exe
PID 2016 set thread context of 1256	2016	PO##4354267813...pdf.exe	Explorer.EXE
PID 1632 set thread context of 1256	1632	msdt.exe	Explorer.EXE

Drops file in Program Files directory 1 IoCs

Processes:

msdt.exe

description ioc process

File opened for modification C:\Program Files (x86)\Mrfidu\msz4dtqvah.exe msdt.exe

description	ioc	process
File opened for modification	C:\Program Files (x86)\Mrfidu\msz4dtqvah.exe	msdt.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

msdt.exe

description	ioc	process
Key created	\Registry\User\S-1-5-21-1083475884-596052423-1669053738-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	msdt.exe

Suspicious behavior: EnumeratesProcesses 20 IoCs

Processes:

PO##4354267813...pdf.exemsdt.exe

pid	process
2016	PO##4354267813...pdf.exe
2016	PO##4354267813...pdf.exe
1632	msdt.exe
1632	msdt.exe
1632	msdt.exe
1632	msdt.exe
1632	msdt.exe
1632	msdt.exe
1632	msdt.exe
1632	msdt.exe
1632	msdt.exe
1632	msdt.exe
1632	msdt.exe
1632	msdt.exe
1632	msdt.exe
1632	msdt.exe
1632	msdt.exe
1632	msdt.exe
1632	msdt.exe
1632	msdt.exe

Suspicious behavior: MapViewOfSection 7 IoCs

Processes:

PO##4354267813...pdf.exemsdt.exe

pid process

2016 PO##4354267813...pdf.exe
2016 PO##4354267813...pdf.exe
2016 PO##4354267813...pdf.exe
1632 msdt.exe
1632 msdt.exe
1632 msdt.exe
1632 msdt.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

PO##4354267813...pdf.exemsdt.exe

description pid process

Token: SeDebugPrivilege 2016 PO##4354267813...pdf.exe
Token: SeDebugPrivilege 1632 msdt.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

description	pid	process
Token: SeDebugPrivilege	2016	PO##4354267813...pdf.exe
Token: SeDebugPrivilege	1632	msdt.exe

pid	process
1256	Explorer.EXE
1256	Explorer.EXE

pid	process
1256	Explorer.EXE
1256	Explorer.EXE

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

PO##4354267813...pdf.exeExplorer.EXEmsdt.exe

description	pid	process	target process
PID 1228 wrote to memory of 2016	1228	PO##4354267813...pdf.exe	PO##4354267813...pdf.exe
PID 1228 wrote to memory of 2016	1228	PO##4354267813...pdf.exe	PO##4354267813...pdf.exe
PID 1228 wrote to memory of 2016	1228	PO##4354267813...pdf.exe	PO##4354267813...pdf.exe
PID 1228 wrote to memory of 2016	1228	PO##4354267813...pdf.exe	PO##4354267813...pdf.exe
PID 1228 wrote to memory of 2016	1228	PO##4354267813...pdf.exe	PO##4354267813...pdf.exe
PID 1228 wrote to memory of 2016	1228	PO##4354267813...pdf.exe	PO##4354267813...pdf.exe
PID 1228 wrote to memory of 2016	1228	PO##4354267813...pdf.exe	PO##4354267813...pdf.exe
PID 1256 wrote to memory of 1632	1256	Explorer.EXE	msdt.exe
PID 1256 wrote to memory of 1632	1256	Explorer.EXE	msdt.exe
PID 1256 wrote to memory of 1632	1256	Explorer.EXE	msdt.exe
PID 1256 wrote to memory of 1632	1256	Explorer.EXE	msdt.exe
PID 1632 wrote to memory of 580	1632	msdt.exe	cmd.exe
PID 1632 wrote to memory of 580	1632	msdt.exe	cmd.exe
PID 1632 wrote to memory of 580	1632	msdt.exe	cmd.exe
PID 1632 wrote to memory of 580	1632	msdt.exe	cmd.exe
PID 1632 wrote to memory of 1000	1632	msdt.exe	Firefox.exe
PID 1632 wrote to memory of 1000	1632	msdt.exe	Firefox.exe
PID 1632 wrote to memory of 1000	1632	msdt.exe	Firefox.exe
PID 1632 wrote to memory of 1000	1632	msdt.exe	Firefox.exe
PID 1632 wrote to memory of 1000	1632	msdt.exe	Firefox.exe

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

C:\Users\Admin\AppData\Local\Temp\PO##4354267813...pdf.exe
"C:\Users\Admin\AppData\Local\Temp\PO##4354267813...pdf.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1228

C:\Users\Admin\AppData\Local\Temp\PO##4354267813...pdf.exe
"{path}"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:2016

C:\Windows\SysWOW64\msdt.exe
"C:\Windows\SysWOW64\msdt.exe"
2⤵
- Adds policy 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:1632

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\PO##4354267813...pdf.exe"
3⤵
- Deletes itself
PID:580

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:1000

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

2

T1112

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Roaming\-1L2OPP-\-1Llogim.jpeg
Filesize
63KB

MD5
3f93fed24f5b4451ea63775888ab921c

SHA1
0ebf2d0caabfd673f9686fc985ce2a355ae69aee

SHA256
dda2b2d93817d617c980cbfb983d34d052553358fb59355f0c4cd823f5696c4a

SHA512
81e5ef52c14e2c7960bae257b6baa4da9239441de8e7d0a247d09f13b06bff36e3ac70df1bd94498bbad7a24fab17832f63324117eafe9c264e772024b85916b

Download Submit
C:\Users\Admin\AppData\Roaming\-1L2OPP-\-1Llogrf.ini
Filesize
40B

MD5
2f245469795b865bdd1b956c23d7893d

SHA1
6ad80b974d3808f5a20ea1e766c7d2f88b9e5895

SHA256
1662d01a2d47b875a34fc7a8cd92e78cb2ba7f34023c7fd2639cbb10b8d94361

SHA512
909f189846a5d2db208a5eb2e7cb3042c0f164caf437e2b1b6de608c0a70e4f3510b81b85753dbeec1e211e6a83e6ea8c96aff896e9b6e8ed42014473a54dc4f

Download Submit
C:\Users\Admin\AppData\Roaming\-1L2OPP-\-1Llogri.ini
Filesize
40B

MD5
d63a82e5d81e02e399090af26db0b9cb

SHA1
91d0014c8f54743bba141fd60c9d963f869d76c9

SHA256
eaece2eba6310253249603033c744dd5914089b0bb26bde6685ec9813611baae

SHA512
38afb05016d8f3c69d246321573997aaac8a51c34e61749a02bf5e8b2b56b94d9544d65801511044e1495906a86dc2100f2e20ff4fcbed09e01904cc780fdbad

Download Submit
C:\Users\Admin\AppData\Roaming\-1L2OPP-\-1Llogrv.ini
Filesize
40B

MD5
ba3b6bc807d4f76794c4b81b09bb9ba5

SHA1
24cb89501f0212ff3095ecc0aba97dd563718fb1

SHA256
6eebf968962745b2e9de2ca969af7c424916d4e3fe3cc0bb9b3d414abfce9507

SHA512
ecd07e601fc9e3cfc39addd7bd6f3d7f7ff3253afb40bf536e9eaac5a4c243e5ec40fbfd7b216cb0ea29f2517419601e335e33ba19dea4a46f65e38694d465bf

Download Submit
memory/580-69-0x0000000000000000-mapping.dmp

Download
memory/1228-55-0x00000000043A0000-0x0000000004416000-memory.dmp

Filesize
472KB

Download
memory/1228-56-0x0000000000490000-0x0000000000498000-memory.dmp

Filesize
32KB

Download
memory/1228-57-0x0000000004A20000-0x0000000004A5A000-memory.dmp

Filesize
232KB

Download
memory/1228-54-0x0000000000B80000-0x0000000000BDA000-memory.dmp

Filesize
360KB

Download
memory/1256-74-0x0000000004C00000-0x0000000004D08000-memory.dmp

Filesize
1.0MB

Download
memory/1256-66-0x0000000004A90000-0x0000000004BFB000-memory.dmp

Filesize
1.4MB

Download
memory/1632-71-0x0000000000080000-0x00000000000AD000-memory.dmp

Filesize
180KB

Download
memory/1632-68-0x00000000751C1000-0x00000000751C3000-memory.dmp

Filesize
8KB

Download
memory/1632-67-0x0000000000000000-mapping.dmp

Download
memory/1632-70-0x00000000001D0000-0x00000000002C4000-memory.dmp

Filesize
976KB

Download
memory/1632-72-0x0000000002250000-0x0000000002553000-memory.dmp

Filesize
3.0MB

Download
memory/1632-73-0x00000000020E0000-0x0000000002173000-memory.dmp

Filesize
588KB

Download
memory/2016-65-0x0000000000120000-0x0000000000134000-memory.dmp

Filesize
80KB

Download
memory/2016-64-0x0000000000770000-0x0000000000A73000-memory.dmp

Filesize
3.0MB

Download
memory/2016-62-0x000000000041E320-mapping.dmp

Download
memory/2016-61-0x0000000000400000-0x000000000042D000-memory.dmp

Filesize
180KB

Download
memory/2016-59-0x0000000000400000-0x000000000042D000-memory.dmp

Filesize
180KB

Download
memory/2016-58-0x0000000000400000-0x000000000042D000-memory.dmp

Filesize
180KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

Loading Replay Monitor...

Downloads