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
behavioral2/memory/4428-135-0x0000000000400000-0x000000000042D000-memory.dmp	formbook
behavioral2/memory/4428-137-0x0000000000400000-0x000000000042D000-memory.dmp	formbook
behavioral2/memory/4632-146-0x0000000000660000-0x000000000068D000-memory.dmp	formbook

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

wscript.exe

description	ioc	process
Key created	\Registry\Machine\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run	wscript.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\SPXLPR = "C:\\Program Files (x86)\\Ee2kda\\d8tpux4tqnnh.exe"	wscript.exe

Suspicious use of SetThreadContext 4 IoCs

Processes:

PO##4354267813...pdf.exePO##4354267813...pdf.exewscript.exe

description	pid	process	target process
PID 4776 set thread context of 4428	4776	PO##4354267813...pdf.exe	PO##4354267813...pdf.exe
PID 4428 set thread context of 3232	4428	PO##4354267813...pdf.exe	Explorer.EXE
PID 4428 set thread context of 3232	4428	PO##4354267813...pdf.exe	Explorer.EXE
PID 4632 set thread context of 3232	4632	wscript.exe	Explorer.EXE

Drops file in Program Files directory 1 IoCs

Processes:

wscript.exe

description ioc process

File opened for modification C:\Program Files (x86)\Ee2kda\d8tpux4tqnnh.exe wscript.exe

description	ioc	process
File opened for modification	C:\Program Files (x86)\Ee2kda\d8tpux4tqnnh.exe	wscript.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

wscript.exe

description	ioc	process
Key created	\Registry\User\S-1-5-21-3751123196-3323558407-1869646069-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	wscript.exe

Suspicious behavior: EnumeratesProcesses 44 IoCs

Processes:

PO##4354267813...pdf.exewscript.exe

pid	process
4428	PO##4354267813...pdf.exe
4428	PO##4354267813...pdf.exe
4428	PO##4354267813...pdf.exe
4428	PO##4354267813...pdf.exe
4428	PO##4354267813...pdf.exe
4428	PO##4354267813...pdf.exe
4632	wscript.exe
4632	wscript.exe
4632	wscript.exe
4632	wscript.exe
4632	wscript.exe
4632	wscript.exe
4632	wscript.exe
4632	wscript.exe
4632	wscript.exe
4632	wscript.exe
4632	wscript.exe
4632	wscript.exe
4632	wscript.exe
4632	wscript.exe
4632	wscript.exe
4632	wscript.exe
4632	wscript.exe
4632	wscript.exe
4632	wscript.exe
4632	wscript.exe
4632	wscript.exe
4632	wscript.exe
4632	wscript.exe
4632	wscript.exe
4632	wscript.exe
4632	wscript.exe
4632	wscript.exe
4632	wscript.exe
4632	wscript.exe
4632	wscript.exe
4632	wscript.exe
4632	wscript.exe
4632	wscript.exe
4632	wscript.exe
4632	wscript.exe
4632	wscript.exe
4632	wscript.exe
4632	wscript.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

3232 Explorer.EXE

pid	process
3232	Explorer.EXE

Suspicious behavior: MapViewOfSection 8 IoCs

Processes:

PO##4354267813...pdf.exewscript.exe

pid	process
4428	PO##4354267813...pdf.exe
4428	PO##4354267813...pdf.exe
4428	PO##4354267813...pdf.exe
4428	PO##4354267813...pdf.exe
4632	wscript.exe
4632	wscript.exe
4632	wscript.exe
4632	wscript.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

Processes:

PO##4354267813...pdf.exewscript.exeExplorer.EXE

description	pid	process
Token: SeDebugPrivilege	4428	PO##4354267813...pdf.exe
Token: SeDebugPrivilege	4632	wscript.exe
Token: SeShutdownPrivilege	3232	Explorer.EXE
Token: SeCreatePagefilePrivilege	3232	Explorer.EXE
Token: SeShutdownPrivilege	3232	Explorer.EXE
Token: SeCreatePagefilePrivilege	3232	Explorer.EXE

Suspicious use of WriteProcessMemory 18 IoCs

Processes:

PO##4354267813...pdf.exeExplorer.EXEwscript.exe

description	pid	process	target process
PID 4776 wrote to memory of 4428	4776	PO##4354267813...pdf.exe	PO##4354267813...pdf.exe
PID 4776 wrote to memory of 4428	4776	PO##4354267813...pdf.exe	PO##4354267813...pdf.exe
PID 4776 wrote to memory of 4428	4776	PO##4354267813...pdf.exe	PO##4354267813...pdf.exe
PID 4776 wrote to memory of 4428	4776	PO##4354267813...pdf.exe	PO##4354267813...pdf.exe
PID 4776 wrote to memory of 4428	4776	PO##4354267813...pdf.exe	PO##4354267813...pdf.exe
PID 4776 wrote to memory of 4428	4776	PO##4354267813...pdf.exe	PO##4354267813...pdf.exe
PID 3232 wrote to memory of 4632	3232	Explorer.EXE	wscript.exe
PID 3232 wrote to memory of 4632	3232	Explorer.EXE	wscript.exe
PID 3232 wrote to memory of 4632	3232	Explorer.EXE	wscript.exe
PID 4632 wrote to memory of 4552	4632	wscript.exe	cmd.exe
PID 4632 wrote to memory of 4552	4632	wscript.exe	cmd.exe
PID 4632 wrote to memory of 4552	4632	wscript.exe	cmd.exe
PID 4632 wrote to memory of 4168	4632	wscript.exe	cmd.exe
PID 4632 wrote to memory of 4168	4632	wscript.exe	cmd.exe
PID 4632 wrote to memory of 4168	4632	wscript.exe	cmd.exe
PID 4632 wrote to memory of 5116	4632	wscript.exe	Firefox.exe
PID 4632 wrote to memory of 5116	4632	wscript.exe	Firefox.exe
PID 4632 wrote to memory of 5116	4632	wscript.exe	Firefox.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3232

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:4776

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:4428

C:\Windows\SysWOW64\wscript.exe
"C:\Windows\SysWOW64\wscript.exe"
2⤵
- Adds 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:4632

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\PO##4354267813...pdf.exe"
3⤵
PID:4552

C:\Windows\SysWOW64\cmd.exe
/c copy "C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Login Data" "C:\Users\Admin\AppData\Local\Temp\DB1" /V
3⤵
PID:4168

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:5116

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

Credentials in Files

1

T1081

Discovery

Lateral Movement

Collection

Data from Local System

1

T1005

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\DB1
Filesize
40KB

MD5
b608d407fc15adea97c26936bc6f03f6

SHA1
953e7420801c76393902c0d6bb56148947e41571

SHA256
b281ce54125d4250a80f48fcc02a8eea53f2c35c3b726e2512c3d493da0013bf

SHA512
cc96ddf4bf90d6aaa9d86803cb2aa30cd8e9b295aee1bd5544b88aeab63dc60bb1d4641e846c9771bab51aabbfbcd984c6d3ee83b96f5b65d09c0841d464b9e4

Download Submit
memory/3232-140-0x0000000007C70000-0x0000000007DB4000-memory.dmp

Filesize
1.3MB

Download
memory/3232-150-0x0000000007FE0000-0x000000000811F000-memory.dmp

Filesize
1.2MB

Download
memory/3232-143-0x0000000007E30000-0x0000000007F63000-memory.dmp

Filesize
1.2MB

Download
memory/4168-151-0x0000000000000000-mapping.dmp

Download
memory/4428-142-0x0000000002D20000-0x0000000002D34000-memory.dmp

Filesize
80KB

Download
memory/4428-134-0x0000000000000000-mapping.dmp

Download
memory/4428-138-0x0000000000F20000-0x000000000126A000-memory.dmp

Filesize
3.3MB

Download
memory/4428-135-0x0000000000400000-0x000000000042D000-memory.dmp

Filesize
180KB

Download
memory/4428-139-0x00000000013E0000-0x00000000013F4000-memory.dmp

Filesize
80KB

Download
memory/4428-137-0x0000000000400000-0x000000000042D000-memory.dmp

Filesize
180KB

Download
memory/4552-147-0x0000000000000000-mapping.dmp

Download
memory/4632-144-0x0000000000000000-mapping.dmp

Download
memory/4632-146-0x0000000000660000-0x000000000068D000-memory.dmp

Filesize
180KB

Download
memory/4632-145-0x0000000000610000-0x0000000000637000-memory.dmp

Filesize
156KB

Download
memory/4632-148-0x00000000027F0000-0x0000000002B3A000-memory.dmp

Filesize
3.3MB

Download
memory/4632-149-0x0000000002530000-0x00000000025C3000-memory.dmp

Filesize
588KB

Download
memory/4776-130-0x0000000000600000-0x000000000065A000-memory.dmp

Filesize
360KB

Download
memory/4776-133-0x00000000084C0000-0x000000000855C000-memory.dmp

Filesize
624KB

Download
memory/4776-132-0x00000000075A0000-0x0000000007632000-memory.dmp

Filesize
584KB

Download
memory/4776-131-0x0000000007A70000-0x0000000008014000-memory.dmp

Filesize
5.6MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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