formbook | f40c731716d135ea7e583819570a83d92e24c3dfb2a3b0ac375bd97774ffd689

General

Target

PO4809217226898789.pdf.exe
Size

347KB
MD5

e3d87c2d533796d8a78793bf4ef179ec
SHA1

7855d161dc42e4a0936f71274c9142950fc542c8
SHA256

f40c731716d135ea7e583819570a83d92e24c3dfb2a3b0ac375bd97774ffd689
SHA512

b4af236df96ad68bac6cc0522de034083c5b49d295bff8c1c83223ba1d137dfae48601ec443f346c1f672846dd8f58124d6c076be85b736060e083ee12725812

Score

10^/10

formbook gr1c rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

gr1c

C2

http://www.illusiontrick.com/gr1c/

Decoy

soakyourgrains.com

duwego.com

aenkdesign.com

bikabbziu.xyz

thesawyerlegacy.com

koreanmodelbj.xyz

exceed-standards.com

syirsve.com

sachisushimontreal.com

thegalwaykitchen.com

accarwash-hub.com

connectwithmentor.com

luftfundament.online

ibrahimkaracan.com

biggersinsurance.com

desellon.com

tvnewscloset.com

digital-dre.com

ingocg.com

fernanda-ortiz.com

Signatures

Formbook
Formbook is a data stealing malware which is capable of stealing data.
trojan spyware stealer formbook

Formbook Payload 3 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/1516-64-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/1516-65-0x000000000041F0B0-mapping.dmp	formbook
behavioral1/memory/1804-72-0x0000000000080000-0x00000000000AF000-memory.dmp	formbook

Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

1104 cmd.exe

pid	process
1104	cmd.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

PO4809217226898789.pdf.exePO4809217226898789.pdf.exechkdsk.exe

description	pid	process	target process
PID 676 set thread context of 1516	676	PO4809217226898789.pdf.exe	PO4809217226898789.pdf.exe
PID 1516 set thread context of 1272	1516	PO4809217226898789.pdf.exe	Explorer.EXE
PID 1804 set thread context of 1272	1804	chkdsk.exe	Explorer.EXE

Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry
T1012

System Information Discovery
T1082

Processes:

chkdsk.exe

description ioc process

Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier chkdsk.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	chkdsk.exe

Suspicious behavior: EnumeratesProcesses 34 IoCs

Processes:

PO4809217226898789.pdf.exePO4809217226898789.pdf.exechkdsk.exe

pid	process
676	PO4809217226898789.pdf.exe
676	PO4809217226898789.pdf.exe
676	PO4809217226898789.pdf.exe
676	PO4809217226898789.pdf.exe
676	PO4809217226898789.pdf.exe
676	PO4809217226898789.pdf.exe
676	PO4809217226898789.pdf.exe
676	PO4809217226898789.pdf.exe
676	PO4809217226898789.pdf.exe
676	PO4809217226898789.pdf.exe
676	PO4809217226898789.pdf.exe
676	PO4809217226898789.pdf.exe
676	PO4809217226898789.pdf.exe
676	PO4809217226898789.pdf.exe
676	PO4809217226898789.pdf.exe
676	PO4809217226898789.pdf.exe
676	PO4809217226898789.pdf.exe
1516	PO4809217226898789.pdf.exe
1516	PO4809217226898789.pdf.exe
1804	chkdsk.exe
1804	chkdsk.exe
1804	chkdsk.exe
1804	chkdsk.exe
1804	chkdsk.exe
1804	chkdsk.exe
1804	chkdsk.exe
1804	chkdsk.exe
1804	chkdsk.exe
1804	chkdsk.exe
1804	chkdsk.exe
1804	chkdsk.exe
1804	chkdsk.exe
1804	chkdsk.exe
1804	chkdsk.exe

Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

PO4809217226898789.pdf.exechkdsk.exe

pid process

1516 PO4809217226898789.pdf.exe
1516 PO4809217226898789.pdf.exe
1516 PO4809217226898789.pdf.exe
1804 chkdsk.exe
1804 chkdsk.exe

pid	process
1516	PO4809217226898789.pdf.exe
1516	PO4809217226898789.pdf.exe
1516	PO4809217226898789.pdf.exe
1804	chkdsk.exe
1804	chkdsk.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

PO4809217226898789.pdf.exePO4809217226898789.pdf.exechkdsk.exe

description	pid	process
Token: SeDebugPrivilege	676	PO4809217226898789.pdf.exe
Token: SeDebugPrivilege	1516	PO4809217226898789.pdf.exe
Token: SeDebugPrivilege	1804	chkdsk.exe

Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

Explorer.EXE

pid process

1272 Explorer.EXE
1272 Explorer.EXE
Suspicious use of SendNotifyMessage 2 IoCs

Processes:

Explorer.EXE

pid process

1272 Explorer.EXE
1272 Explorer.EXE

pid	process
1272	Explorer.EXE
1272	Explorer.EXE

pid	process
1272	Explorer.EXE
1272	Explorer.EXE

Suspicious use of WriteProcessMemory 19 IoCs

Processes:

PO4809217226898789.pdf.exeExplorer.EXEchkdsk.exe

description	pid	process	target process
PID 676 wrote to memory of 1056	676	PO4809217226898789.pdf.exe	PO4809217226898789.pdf.exe
PID 676 wrote to memory of 1056	676	PO4809217226898789.pdf.exe	PO4809217226898789.pdf.exe
PID 676 wrote to memory of 1056	676	PO4809217226898789.pdf.exe	PO4809217226898789.pdf.exe
PID 676 wrote to memory of 1056	676	PO4809217226898789.pdf.exe	PO4809217226898789.pdf.exe
PID 676 wrote to memory of 1516	676	PO4809217226898789.pdf.exe	PO4809217226898789.pdf.exe
PID 676 wrote to memory of 1516	676	PO4809217226898789.pdf.exe	PO4809217226898789.pdf.exe
PID 676 wrote to memory of 1516	676	PO4809217226898789.pdf.exe	PO4809217226898789.pdf.exe
PID 676 wrote to memory of 1516	676	PO4809217226898789.pdf.exe	PO4809217226898789.pdf.exe
PID 676 wrote to memory of 1516	676	PO4809217226898789.pdf.exe	PO4809217226898789.pdf.exe
PID 676 wrote to memory of 1516	676	PO4809217226898789.pdf.exe	PO4809217226898789.pdf.exe
PID 676 wrote to memory of 1516	676	PO4809217226898789.pdf.exe	PO4809217226898789.pdf.exe
PID 1272 wrote to memory of 1804	1272	Explorer.EXE	chkdsk.exe
PID 1272 wrote to memory of 1804	1272	Explorer.EXE	chkdsk.exe
PID 1272 wrote to memory of 1804	1272	Explorer.EXE	chkdsk.exe
PID 1272 wrote to memory of 1804	1272	Explorer.EXE	chkdsk.exe
PID 1804 wrote to memory of 1104	1804	chkdsk.exe	cmd.exe
PID 1804 wrote to memory of 1104	1804	chkdsk.exe	cmd.exe
PID 1804 wrote to memory of 1104	1804	chkdsk.exe	cmd.exe
PID 1804 wrote to memory of 1104	1804	chkdsk.exe	cmd.exe

C:\Users\Admin\AppData\Local\Temp\PO4809217226898789.pdf.exe
"C:\Users\Admin\AppData\Local\Temp\PO4809217226898789.pdf.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:676

C:\Users\Admin\AppData\Local\Temp\PO4809217226898789.pdf.exe
"C:\Users\Admin\AppData\Local\Temp\PO4809217226898789.pdf.exe"
2⤵
PID:1056

C:\Users\Admin\AppData\Local\Temp\PO4809217226898789.pdf.exe
"C:\Users\Admin\AppData\Local\Temp\PO4809217226898789.pdf.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:1516

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1272

C:\Windows\SysWOW64\chkdsk.exe
"C:\Windows\SysWOW64\chkdsk.exe"
2⤵
- Suspicious use of SetThreadContext
- Enumerates system info in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1804

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\PO4809217226898789.pdf.exe"
3⤵
- Deletes itself
PID:1104

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/676-55-0x0000000000180000-0x0000000000181000-memory.dmp

Filesize
4KB

Download
memory/676-57-0x0000000075C21000-0x0000000075C23000-memory.dmp

Filesize
8KB

Download
memory/676-58-0x0000000004D60000-0x0000000004D61000-memory.dmp

Filesize
4KB

Download
memory/676-59-0x0000000000690000-0x0000000000697000-memory.dmp

Filesize
28KB

Download
memory/676-60-0x000000007EF40000-0x000000007EF41000-memory.dmp

Filesize
4KB

Download
memory/676-61-0x0000000002200000-0x0000000002250000-memory.dmp

Filesize
320KB

Download
memory/1104-73-0x0000000000000000-mapping.dmp

Download
memory/1272-76-0x0000000007C60000-0x0000000007DD0000-memory.dmp

Filesize
1.4MB

Download
memory/1272-69-0x0000000006AF0000-0x0000000006BF3000-memory.dmp

Filesize
1.0MB

Download
memory/1516-67-0x0000000000940000-0x0000000000C43000-memory.dmp

Filesize
3.0MB

Download
memory/1516-65-0x000000000041F0B0-mapping.dmp

Download
memory/1516-68-0x0000000000200000-0x0000000000214000-memory.dmp

Filesize
80KB

Download
memory/1516-62-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1516-64-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1516-63-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1804-70-0x0000000000000000-mapping.dmp

Download
memory/1804-72-0x0000000000080000-0x00000000000AF000-memory.dmp

Filesize
188KB

Download
memory/1804-71-0x0000000000DC0000-0x0000000000DC7000-memory.dmp

Filesize
28KB

Download
memory/1804-74-0x00000000021D0000-0x00000000024D3000-memory.dmp

Filesize
3.0MB

Download
memory/1804-75-0x00000000009B0000-0x0000000000A43000-memory.dmp

Filesize
588KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

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Downloads