formbook | 18b4cd72864cf3ac6bd169fadfa6db171d499e5fbbd5795ea3625d01d17d3f1d

General

Target

???? ???????.exe
Size

479KB
MD5

0552dc2eb77ff766b362f1cdef722a14
SHA1

e00a9c847419d53e21f6edb25d70a79bdf30723f
SHA256

c9b141757defd483a6ff17438e86be87e0c1e5bc3d943c15989d84f577def797
SHA512

307b9296e101c18a75e7d38f945e486cd3bb7165f3fdc25362a47efcc9530e98b931c6d3c672c08d1c88af9c2cd6afac234e6cfadae4b6ab10dfaf84a80a47a6

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
behavioral2/memory/5032-140-0x0000000000400000-0x000000000042E000-memory.dmp	formbook
behavioral2/memory/5032-142-0x0000000000400000-0x000000000042E000-memory.dmp	formbook
behavioral2/memory/4376-148-0x0000000000530000-0x000000000055E000-memory.dmp	formbook

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

____ _______.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Control Panel\International\Geo\Nation	____ _______.exe

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:

ipconfig.exe

description	ioc	process
Key created	\Registry\Machine\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run	ipconfig.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\BN4T7BMXCN = "C:\\Program Files (x86)\\Ek8tpe0\\hfetplaxmpw.exe"	ipconfig.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

____ _______.exeRegSvcs.exeipconfig.exe

description	pid	process	target process
PID 3108 set thread context of 5032	3108	____ _______.exe	RegSvcs.exe
PID 5032 set thread context of 3140	5032	RegSvcs.exe	Explorer.EXE
PID 4376 set thread context of 3140	4376	ipconfig.exe	Explorer.EXE

Drops file in Program Files directory 1 IoCs

Processes:

ipconfig.exe

description ioc process

File opened for modification C:\Program Files (x86)\Ek8tpe0\hfetplaxmpw.exe ipconfig.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

3292 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:

ipconfig.exe

pid process

4376 ipconfig.exe

description	ioc	process
File opened for modification	C:\Program Files (x86)\Ek8tpe0\hfetplaxmpw.exe	ipconfig.exe

pid	process
3292	schtasks.exe

pid	process
4376	ipconfig.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

ipconfig.exe

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

Suspicious behavior: EnumeratesProcesses 44 IoCs

Processes:

____ _______.exeRegSvcs.exeipconfig.exe

pid	process
3108	____ _______.exe
3108	____ _______.exe
3108	____ _______.exe
3108	____ _______.exe
3108	____ _______.exe
3108	____ _______.exe
3108	____ _______.exe
3108	____ _______.exe
5032	RegSvcs.exe
5032	RegSvcs.exe
5032	RegSvcs.exe
5032	RegSvcs.exe
4376	ipconfig.exe
4376	ipconfig.exe
4376	ipconfig.exe
4376	ipconfig.exe
4376	ipconfig.exe
4376	ipconfig.exe
4376	ipconfig.exe
4376	ipconfig.exe
4376	ipconfig.exe
4376	ipconfig.exe
4376	ipconfig.exe
4376	ipconfig.exe
4376	ipconfig.exe
4376	ipconfig.exe
4376	ipconfig.exe
4376	ipconfig.exe
4376	ipconfig.exe
4376	ipconfig.exe
4376	ipconfig.exe
4376	ipconfig.exe
4376	ipconfig.exe
4376	ipconfig.exe
4376	ipconfig.exe
4376	ipconfig.exe
4376	ipconfig.exe
4376	ipconfig.exe
4376	ipconfig.exe
4376	ipconfig.exe
4376	ipconfig.exe
4376	ipconfig.exe
4376	ipconfig.exe
4376	ipconfig.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

3140 Explorer.EXE
Suspicious behavior: MapViewOfSection 7 IoCs

Processes:

RegSvcs.exeipconfig.exe

pid process

5032 RegSvcs.exe
5032 RegSvcs.exe
5032 RegSvcs.exe
4376 ipconfig.exe
4376 ipconfig.exe
4376 ipconfig.exe
4376 ipconfig.exe

pid	process
3140	Explorer.EXE

pid	process
5032	RegSvcs.exe
5032	RegSvcs.exe
5032	RegSvcs.exe
4376	ipconfig.exe
4376	ipconfig.exe
4376	ipconfig.exe
4376	ipconfig.exe

Suspicious use of AdjustPrivilegeToken 7 IoCs

Processes:

____ _______.exeRegSvcs.exeipconfig.exeExplorer.EXE

description	pid	process
Token: SeDebugPrivilege	3108	____ _______.exe
Token: SeDebugPrivilege	5032	RegSvcs.exe
Token: SeDebugPrivilege	4376	ipconfig.exe
Token: SeShutdownPrivilege	3140	Explorer.EXE
Token: SeCreatePagefilePrivilege	3140	Explorer.EXE
Token: SeShutdownPrivilege	3140	Explorer.EXE
Token: SeCreatePagefilePrivilege	3140	Explorer.EXE

Suspicious use of WriteProcessMemory 27 IoCs

Processes:

____ _______.exeExplorer.EXEipconfig.exe

description	pid	process	target process
PID 3108 wrote to memory of 3292	3108	____ _______.exe	schtasks.exe
PID 3108 wrote to memory of 3292	3108	____ _______.exe	schtasks.exe
PID 3108 wrote to memory of 3292	3108	____ _______.exe	schtasks.exe
PID 3108 wrote to memory of 1196	3108	____ _______.exe	RegSvcs.exe
PID 3108 wrote to memory of 1196	3108	____ _______.exe	RegSvcs.exe
PID 3108 wrote to memory of 1196	3108	____ _______.exe	RegSvcs.exe
PID 3108 wrote to memory of 1096	3108	____ _______.exe	RegSvcs.exe
PID 3108 wrote to memory of 1096	3108	____ _______.exe	RegSvcs.exe
PID 3108 wrote to memory of 1096	3108	____ _______.exe	RegSvcs.exe
PID 3108 wrote to memory of 5032	3108	____ _______.exe	RegSvcs.exe
PID 3108 wrote to memory of 5032	3108	____ _______.exe	RegSvcs.exe
PID 3108 wrote to memory of 5032	3108	____ _______.exe	RegSvcs.exe
PID 3108 wrote to memory of 5032	3108	____ _______.exe	RegSvcs.exe
PID 3108 wrote to memory of 5032	3108	____ _______.exe	RegSvcs.exe
PID 3108 wrote to memory of 5032	3108	____ _______.exe	RegSvcs.exe
PID 3140 wrote to memory of 4376	3140	Explorer.EXE	ipconfig.exe
PID 3140 wrote to memory of 4376	3140	Explorer.EXE	ipconfig.exe
PID 3140 wrote to memory of 4376	3140	Explorer.EXE	ipconfig.exe
PID 4376 wrote to memory of 2600	4376	ipconfig.exe	cmd.exe
PID 4376 wrote to memory of 2600	4376	ipconfig.exe	cmd.exe
PID 4376 wrote to memory of 2600	4376	ipconfig.exe	cmd.exe
PID 4376 wrote to memory of 3840	4376	ipconfig.exe	cmd.exe
PID 4376 wrote to memory of 3840	4376	ipconfig.exe	cmd.exe
PID 4376 wrote to memory of 3840	4376	ipconfig.exe	cmd.exe
PID 4376 wrote to memory of 536	4376	ipconfig.exe	Firefox.exe
PID 4376 wrote to memory of 536	4376	ipconfig.exe	Firefox.exe
PID 4376 wrote to memory of 536	4376	ipconfig.exe	Firefox.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3140

C:\Users\Admin\AppData\Local\Temp\____ _______.exe
"C:\Users\Admin\AppData\Local\Temp\____ _______.exe"
2⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3108

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\sLYatF" /XML "C:\Users\Admin\AppData\Local\Temp\tmp3BEB.tmp"
3⤵
- Creates scheduled task(s)
PID:3292

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
"{path}"
3⤵
PID:1196

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
"{path}"
3⤵
PID:1096

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:5032

C:\Windows\SysWOW64\ipconfig.exe
"C:\Windows\SysWOW64\ipconfig.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:4376

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
3⤵
PID:2600

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:3840

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:536

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

Credentials in Files

1

T1081

Discovery

Query Registry

1

T1012

System Information Discovery

3

T1082

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
C:\Users\Admin\AppData\Local\Temp\tmp3BEB.tmp
Filesize
1KB

MD5
06931457479630ed366b82416462c5cb

SHA1
18110dd19c29fd73a6e3aacbed693d84164e3658

SHA256
e0573fc5d332ba06913b74f465ff15d4cb3d47b0a6300c3d0c2c656669cf349d

SHA512
4c4b849d85f86eab4462a4309cb3d857b3a15985d1b8510e0e23379a656fd90ba7046cc2885976c7f79cc6c82e7348b281c86ad16c2eadb4e61d4856ece4790f

Download Submit
memory/1096-138-0x0000000000000000-mapping.dmp

Download
memory/1196-137-0x0000000000000000-mapping.dmp

Download
memory/2600-149-0x0000000000000000-mapping.dmp

Download
memory/3108-131-0x0000000005370000-0x0000000005914000-memory.dmp

Filesize
5.6MB

Download
memory/3108-134-0x0000000008590000-0x000000000862C000-memory.dmp

Filesize
624KB

Download
memory/3108-133-0x0000000004DF0000-0x0000000004DFA000-memory.dmp

Filesize
40KB

Download
memory/3108-132-0x0000000004E60000-0x0000000004EF2000-memory.dmp

Filesize
584KB

Download
memory/3108-130-0x00000000003D0000-0x000000000044E000-memory.dmp

Filesize
504KB

Download
memory/3140-145-0x0000000002F30000-0x000000000305B000-memory.dmp

Filesize
1.2MB

Download
memory/3140-152-0x0000000002A30000-0x0000000002ADA000-memory.dmp

Filesize
680KB

Download
memory/3292-135-0x0000000000000000-mapping.dmp

Download
memory/3840-153-0x0000000000000000-mapping.dmp

Download
memory/4376-151-0x0000000000CC0000-0x0000000000D53000-memory.dmp

Filesize
588KB

Download
memory/4376-150-0x0000000000E50000-0x000000000119A000-memory.dmp

Filesize
3.3MB

Download
memory/4376-146-0x0000000000000000-mapping.dmp

Download
memory/4376-147-0x00000000005D0000-0x00000000005DB000-memory.dmp

Filesize
44KB

Download
memory/4376-148-0x0000000000530000-0x000000000055E000-memory.dmp

Filesize
184KB

Download
memory/5032-139-0x0000000000000000-mapping.dmp

Download
memory/5032-144-0x00000000018B0000-0x00000000018C4000-memory.dmp

Filesize
80KB

Download
memory/5032-143-0x00000000018F0000-0x0000000001C3A000-memory.dmp

Filesize
3.3MB

Download
memory/5032-142-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/5032-140-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads