formbook | c2a7767b9323fd3630a56a3fb09a7884bd7dfb0f7146d5caafff472205e1ebdc

General

Target

PO LS632911DX.exe
Size

823KB
MD5

27816f5bbff9bb6d4cc2e1be225a435b
SHA1

fd1f06a502d374711697015cc897fdb28e402e16
SHA256

c2a7767b9323fd3630a56a3fb09a7884bd7dfb0f7146d5caafff472205e1ebdc
SHA512

4bee32d2df168aeba05ceb9e511f84d4a7aa5d08c96047cf6ca0f3241e6d4fb8e4cf5e1cee3e6389e9ceaca400769032bd85b5f323975fdbed4963a3e5a7a217

Score

10^/10

formbook agilenet rat spyware stealer suricata trojan

Malware Config

Extracted

Family

formbook

Version

4.1

C2

http://www.survivai.com/bsdd/

Decoy

533dh.com

galerisikayet.xyz

tipsyalligator.com

crystalwellnessstudio.com

moovaap.com

lelfie.network

speedy-trips.com

prospectsolucoes.com

24x7customersservice.com

szbinsen.com

shikhardeals.com

totaldenta.com

ayksjx.com

avxrja.online

24kyule888.com

ufaw.net

spinozone.com

castvoicesmsreg.com

lajollawoodworks.com

renetyson.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

Formbook Payload 3 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/664-68-0x000000000041EB30-mapping.dmp	formbook
behavioral1/memory/664-69-0x0000000000080000-0x00000000000AE000-memory.dmp	formbook
behavioral1/memory/1852-76-0x0000000000090000-0x00000000000BE000-memory.dmp	formbook

Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

384 cmd.exe

pid	process
384	cmd.exe

Obfuscated with Agile.Net obfuscator 1 IoCs

Detects use of the Agile.Net commercial obfuscator, which is capable of entity renaming and control flow obfuscation.

agilenet

Processes:

resource	yara_rule
behavioral1/memory/1820-63-0x0000000000B70000-0x0000000000B91000-memory.dmp	agile_net

Suspicious use of SetThreadContext 3 IoCs

Processes:

PO LS632911DX.exePO LS632911DX.execmstp.exe

description	pid	process	target process
PID 1820 set thread context of 664	1820	PO LS632911DX.exe	PO LS632911DX.exe
PID 664 set thread context of 1228	664	PO LS632911DX.exe	Explorer.EXE
PID 1852 set thread context of 1228	1852	cmstp.exe	Explorer.EXE

Modifies system certificate store 2 TTPs 3 IoCs

evasion spyware trojan

Install Root Certificate

T1130

Modify Registry

T1112

Processes:

PO LS632911DX.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\B1BC968BD4F49D622AA89A81F2150152A41D829C	PO LS632911DX.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\B1BC968BD4F49D622AA89A81F2150152A41D829C\Blob = 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	PO LS632911DX.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\B1BC968BD4F49D622AA89A81F2150152A41D829C\Blob = 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	PO LS632911DX.exe

Suspicious behavior: EnumeratesProcesses 29 IoCs

Processes:

PO LS632911DX.exePO LS632911DX.execmstp.exe

pid	process
1820	PO LS632911DX.exe
1820	PO LS632911DX.exe
664	PO LS632911DX.exe
664	PO LS632911DX.exe
1852	cmstp.exe
1852	cmstp.exe
1852	cmstp.exe
1852	cmstp.exe
1852	cmstp.exe
1852	cmstp.exe
1852	cmstp.exe
1852	cmstp.exe
1852	cmstp.exe
1852	cmstp.exe
1852	cmstp.exe
1852	cmstp.exe
1852	cmstp.exe
1852	cmstp.exe
1852	cmstp.exe
1852	cmstp.exe
1852	cmstp.exe
1852	cmstp.exe
1852	cmstp.exe
1852	cmstp.exe
1852	cmstp.exe
1852	cmstp.exe
1852	cmstp.exe
1852	cmstp.exe
1852	cmstp.exe

Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

PO LS632911DX.execmstp.exe

pid process

664 PO LS632911DX.exe
664 PO LS632911DX.exe
664 PO LS632911DX.exe
1852 cmstp.exe
1852 cmstp.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

PO LS632911DX.exePO LS632911DX.execmstp.exe

description pid process

Token: SeDebugPrivilege 1820 PO LS632911DX.exe
Token: SeDebugPrivilege 664 PO LS632911DX.exe
Token: SeDebugPrivilege 1852 cmstp.exe
Suspicious use of FindShellTrayWindow 4 IoCs

Processes:

Explorer.EXE

pid process

1228 Explorer.EXE
1228 Explorer.EXE
1228 Explorer.EXE
1228 Explorer.EXE
Suspicious use of SendNotifyMessage 4 IoCs

Processes:

Explorer.EXE

pid process

1228 Explorer.EXE
1228 Explorer.EXE
1228 Explorer.EXE
1228 Explorer.EXE

pid	process
664	PO LS632911DX.exe
664	PO LS632911DX.exe
664	PO LS632911DX.exe
1852	cmstp.exe
1852	cmstp.exe

description	pid	process
Token: SeDebugPrivilege	1820	PO LS632911DX.exe
Token: SeDebugPrivilege	664	PO LS632911DX.exe
Token: SeDebugPrivilege	1852	cmstp.exe

pid	process
1228	Explorer.EXE
1228	Explorer.EXE
1228	Explorer.EXE
1228	Explorer.EXE

pid	process
1228	Explorer.EXE
1228	Explorer.EXE
1228	Explorer.EXE
1228	Explorer.EXE

Suspicious use of WriteProcessMemory 18 IoCs

Processes:

PO LS632911DX.exeExplorer.EXEcmstp.exe

description	pid	process	target process
PID 1820 wrote to memory of 664	1820	PO LS632911DX.exe	PO LS632911DX.exe
PID 1820 wrote to memory of 664	1820	PO LS632911DX.exe	PO LS632911DX.exe
PID 1820 wrote to memory of 664	1820	PO LS632911DX.exe	PO LS632911DX.exe
PID 1820 wrote to memory of 664	1820	PO LS632911DX.exe	PO LS632911DX.exe
PID 1820 wrote to memory of 664	1820	PO LS632911DX.exe	PO LS632911DX.exe
PID 1820 wrote to memory of 664	1820	PO LS632911DX.exe	PO LS632911DX.exe
PID 1820 wrote to memory of 664	1820	PO LS632911DX.exe	PO LS632911DX.exe
PID 1228 wrote to memory of 1852	1228	Explorer.EXE	cmstp.exe
PID 1228 wrote to memory of 1852	1228	Explorer.EXE	cmstp.exe
PID 1228 wrote to memory of 1852	1228	Explorer.EXE	cmstp.exe
PID 1228 wrote to memory of 1852	1228	Explorer.EXE	cmstp.exe
PID 1228 wrote to memory of 1852	1228	Explorer.EXE	cmstp.exe
PID 1228 wrote to memory of 1852	1228	Explorer.EXE	cmstp.exe
PID 1228 wrote to memory of 1852	1228	Explorer.EXE	cmstp.exe
PID 1852 wrote to memory of 384	1852	cmstp.exe	cmd.exe
PID 1852 wrote to memory of 384	1852	cmstp.exe	cmd.exe
PID 1852 wrote to memory of 384	1852	cmstp.exe	cmd.exe
PID 1852 wrote to memory of 384	1852	cmstp.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:1228

C:\Users\Admin\AppData\Local\Temp\PO LS632911DX.exe
"C:\Users\Admin\AppData\Local\Temp\PO LS632911DX.exe"
2⤵
- Suspicious use of SetThreadContext
- Modifies system certificate store
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1820

C:\Users\Admin\AppData\Local\Temp\PO LS632911DX.exe
"C:\Users\Admin\AppData\Local\Temp\PO LS632911DX.exe"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:664

C:\Windows\SysWOW64\cmstp.exe
"C:\Windows\SysWOW64\cmstp.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1852

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\PO LS632911DX.exe"
3⤵
- Deletes itself
PID:384

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Install Root Certificate

1

T1130

Modify Registry

1

T1112

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/384-77-0x0000000000000000-mapping.dmp

Download
memory/664-69-0x0000000000080000-0x00000000000AE000-memory.dmp

Filesize
184KB

Download
memory/664-70-0x00000000009B0000-0x0000000000CB3000-memory.dmp

Filesize
3.0MB

Download
memory/664-71-0x0000000000170000-0x0000000000184000-memory.dmp

Filesize
80KB

Download
memory/664-68-0x000000000041EB30-mapping.dmp

Download
memory/1228-80-0x0000000004E50000-0x0000000004F78000-memory.dmp

Filesize
1.2MB

Download
memory/1228-72-0x0000000004D00000-0x0000000004E50000-memory.dmp

Filesize
1.3MB

Download
memory/1820-65-0x0000000000EE0000-0x0000000000EEB000-memory.dmp

Filesize
44KB

Download
memory/1820-66-0x0000000000E90000-0x0000000000E91000-memory.dmp

Filesize
4KB

Download
memory/1820-59-0x0000000000EF0000-0x0000000000EF1000-memory.dmp

Filesize
4KB

Download
memory/1820-64-0x0000000000A81000-0x0000000000A82000-memory.dmp

Filesize
4KB

Download
memory/1820-63-0x0000000000B70000-0x0000000000B91000-memory.dmp

Filesize
132KB

Download
memory/1820-61-0x0000000000A80000-0x0000000000A81000-memory.dmp

Filesize
4KB

Download
memory/1852-73-0x0000000000000000-mapping.dmp

Download
memory/1852-74-0x0000000075FE1000-0x0000000075FE3000-memory.dmp

Filesize
8KB

Download
memory/1852-75-0x0000000000C50000-0x0000000000C68000-memory.dmp

Filesize
96KB

Download
memory/1852-76-0x0000000000090000-0x00000000000BE000-memory.dmp

Filesize
184KB

Download
memory/1852-78-0x0000000002070000-0x0000000002373000-memory.dmp

Filesize
3.0MB

Download
memory/1852-79-0x00000000009C0000-0x0000000000A53000-memory.dmp

Filesize
588KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

Loading Replay Monitor...

Downloads