formbook | 18b4cd72864cf3ac6bd169fadfa6db171d499e5fbbd5795ea3625d01d17d3f1d

General

Target

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

479KB
MD5

0552dc2eb77ff766b362f1cdef722a14
SHA1

e00a9c847419d53e21f6edb25d70a79bdf30723f
SHA256

c9b141757defd483a6ff17438e86be87e0c1e5bc3d943c15989d84f577def797
SHA512

307b9296e101c18a75e7d38f945e486cd3bb7165f3fdc25362a47efcc9530e98b931c6d3c672c08d1c88af9c2cd6afac234e6cfadae4b6ab10dfaf84a80a47a6

Score

10^/10

formbook kvsz rat spyware stealer 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

Formbook Payload 4 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/968-64-0x0000000000400000-0x000000000042E000-memory.dmp	formbook
behavioral1/memory/968-65-0x000000000041ECA0-mapping.dmp	formbook
behavioral1/memory/968-67-0x0000000000400000-0x000000000042E000-memory.dmp	formbook
behavioral1/memory/1956-75-0x00000000000F0000-0x000000000011E000-memory.dmp	formbook

Suspicious use of SetThreadContext 3 IoCs

Processes:

____ _______.exeRegSvcs.exerundll32.exe

description	pid	process	target process
PID 1012 set thread context of 968	1012	____ _______.exe	RegSvcs.exe
PID 968 set thread context of 1268	968	RegSvcs.exe	Explorer.EXE
PID 1956 set thread context of 1268	1956	rundll32.exe	Explorer.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

2044 schtasks.exe

pid	process
2044	schtasks.exe

Suspicious behavior: EnumeratesProcesses 20 IoCs

Processes:

____ _______.exeRegSvcs.exerundll32.exe

pid	process
1012	____ _______.exe
1012	____ _______.exe
1012	____ _______.exe
1012	____ _______.exe
968	RegSvcs.exe
968	RegSvcs.exe
1956	rundll32.exe
1956	rundll32.exe
1956	rundll32.exe
1956	rundll32.exe
1956	rundll32.exe
1956	rundll32.exe
1956	rundll32.exe
1956	rundll32.exe
1956	rundll32.exe
1956	rundll32.exe
1956	rundll32.exe
1956	rundll32.exe
1956	rundll32.exe
1956	rundll32.exe

Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

RegSvcs.exerundll32.exe

pid process

968 RegSvcs.exe
968 RegSvcs.exe
968 RegSvcs.exe
1956 rundll32.exe
1956 rundll32.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

____ _______.exeRegSvcs.exerundll32.exe

description pid process

Token: SeDebugPrivilege 1012 ____ _______.exe
Token: SeDebugPrivilege 968 RegSvcs.exe
Token: SeDebugPrivilege 1956 rundll32.exe
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

Explorer.EXE

pid process

1268 Explorer.EXE
1268 Explorer.EXE
Suspicious use of SendNotifyMessage 2 IoCs

Processes:

Explorer.EXE

pid process

1268 Explorer.EXE
1268 Explorer.EXE

pid	process
968	RegSvcs.exe
968	RegSvcs.exe
968	RegSvcs.exe
1956	rundll32.exe
1956	rundll32.exe

description	pid	process
Token: SeDebugPrivilege	1012	____ _______.exe
Token: SeDebugPrivilege	968	RegSvcs.exe
Token: SeDebugPrivilege	1956	rundll32.exe

pid	process
1268	Explorer.EXE
1268	Explorer.EXE

pid	process
1268	Explorer.EXE
1268	Explorer.EXE

Suspicious use of WriteProcessMemory 32 IoCs

Processes:

____ _______.exeExplorer.EXErundll32.exe

description	pid	process	target process
PID 1012 wrote to memory of 2044	1012	____ _______.exe	schtasks.exe
PID 1012 wrote to memory of 2044	1012	____ _______.exe	schtasks.exe
PID 1012 wrote to memory of 2044	1012	____ _______.exe	schtasks.exe
PID 1012 wrote to memory of 2044	1012	____ _______.exe	schtasks.exe
PID 1012 wrote to memory of 1988	1012	____ _______.exe	RegSvcs.exe
PID 1012 wrote to memory of 1988	1012	____ _______.exe	RegSvcs.exe
PID 1012 wrote to memory of 1988	1012	____ _______.exe	RegSvcs.exe
PID 1012 wrote to memory of 1988	1012	____ _______.exe	RegSvcs.exe
PID 1012 wrote to memory of 1988	1012	____ _______.exe	RegSvcs.exe
PID 1012 wrote to memory of 1988	1012	____ _______.exe	RegSvcs.exe
PID 1012 wrote to memory of 1988	1012	____ _______.exe	RegSvcs.exe
PID 1012 wrote to memory of 968	1012	____ _______.exe	RegSvcs.exe
PID 1012 wrote to memory of 968	1012	____ _______.exe	RegSvcs.exe
PID 1012 wrote to memory of 968	1012	____ _______.exe	RegSvcs.exe
PID 1012 wrote to memory of 968	1012	____ _______.exe	RegSvcs.exe
PID 1012 wrote to memory of 968	1012	____ _______.exe	RegSvcs.exe
PID 1012 wrote to memory of 968	1012	____ _______.exe	RegSvcs.exe
PID 1012 wrote to memory of 968	1012	____ _______.exe	RegSvcs.exe
PID 1012 wrote to memory of 968	1012	____ _______.exe	RegSvcs.exe
PID 1012 wrote to memory of 968	1012	____ _______.exe	RegSvcs.exe
PID 1012 wrote to memory of 968	1012	____ _______.exe	RegSvcs.exe
PID 1268 wrote to memory of 1956	1268	Explorer.EXE	rundll32.exe
PID 1268 wrote to memory of 1956	1268	Explorer.EXE	rundll32.exe
PID 1268 wrote to memory of 1956	1268	Explorer.EXE	rundll32.exe
PID 1268 wrote to memory of 1956	1268	Explorer.EXE	rundll32.exe
PID 1268 wrote to memory of 1956	1268	Explorer.EXE	rundll32.exe
PID 1268 wrote to memory of 1956	1268	Explorer.EXE	rundll32.exe
PID 1268 wrote to memory of 1956	1268	Explorer.EXE	rundll32.exe
PID 1956 wrote to memory of 876	1956	rundll32.exe	cmd.exe
PID 1956 wrote to memory of 876	1956	rundll32.exe	cmd.exe
PID 1956 wrote to memory of 876	1956	rundll32.exe	cmd.exe
PID 1956 wrote to memory of 876	1956	rundll32.exe	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1268

C:\Users\Admin\AppData\Local\Temp\____ _______.exe
"C:\Users\Admin\AppData\Local\Temp\____ _______.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1012

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\sLYatF" /XML "C:\Users\Admin\AppData\Local\Temp\tmpB74F.tmp"
3⤵
- Creates scheduled task(s)
PID:2044

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
"{path}"
3⤵
PID:1988

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:968

C:\Windows\SysWOW64\rundll32.exe
"C:\Windows\SysWOW64\rundll32.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1956

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
3⤵
PID:876

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpB74F.tmp
Filesize
1KB

MD5
b6fbbaeca23ab3767c1a7075a87e52fd

SHA1
b8eebe53bcc9a3f8c33ad53bbf58bfc5f99ec0a5

SHA256
1efc807ae329869f474755027b8b5ea24f72cd78c29cff334e6f425c15f11a61

SHA512
8b9149f2905e6302c3b862b7be537dee25ca35b61e06e7322db96b58c9d050a4f1965aabc173b9dd6f946faae5d193120d6f984de28a233ffdd1996a90f1a46c

Download Submit
memory/876-73-0x0000000000000000-mapping.dmp

Download
memory/968-68-0x0000000000700000-0x0000000000A03000-memory.dmp

Filesize
3.0MB

Download
memory/968-64-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/968-69-0x00000000004A0000-0x00000000004B4000-memory.dmp

Filesize
80KB

Download
memory/968-67-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/968-65-0x000000000041ECA0-mapping.dmp

Download
memory/968-61-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/968-62-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/1012-56-0x00000000002F0000-0x0000000000300000-memory.dmp

Filesize
64KB

Download
memory/1012-57-0x0000000004880000-0x00000000048D4000-memory.dmp

Filesize
336KB

Download
memory/1012-55-0x0000000076851000-0x0000000076853000-memory.dmp

Filesize
8KB

Download
memory/1012-58-0x0000000004DD0000-0x0000000004E04000-memory.dmp

Filesize
208KB

Download
memory/1012-54-0x0000000000A40000-0x0000000000ABE000-memory.dmp

Filesize
504KB

Download
memory/1268-78-0x0000000004E50000-0x0000000004F91000-memory.dmp

Filesize
1.3MB

Download
memory/1268-70-0x00000000040B0000-0x0000000004174000-memory.dmp

Filesize
784KB

Download
memory/1956-71-0x0000000000000000-mapping.dmp

Download
memory/1956-74-0x0000000000290000-0x000000000029E000-memory.dmp

Filesize
56KB

Download
memory/1956-75-0x00000000000F0000-0x000000000011E000-memory.dmp

Filesize
184KB

Download
memory/1956-76-0x0000000002120000-0x0000000002423000-memory.dmp

Filesize
3.0MB

Download
memory/1956-77-0x0000000000A00000-0x0000000000A93000-memory.dmp

Filesize
588KB

Download
memory/2044-59-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads