formbook | 4245864df59a60102fb28a3f19a9ecd8f44501c34d0f217811bf84c4b4d8d4ab

General

Target

Proforma Invoice No.42037 dated 26032021 for USD.78116.pdf.exe
Size

1.2MB
MD5

8c64b248212fd63f7c0cfdca16b6b5aa
SHA1

1ae15b049c1059d1e43ae5851005f50826c0d0b2
SHA256

88a9cfa636128b92a40156cdabb79f0058c7cf70bc392e60a9e8ec6c1090e6cf
SHA512

79581d25d4f35e1ae175f9b62789e1e8cf48b003f7f903a7a794aa85e43e2c8b73c890346f1608cdc13b9d6d42f4078184ee70709876e1dbfddd3c077a58cb0b

Score

10^/10

formbook rat spyware stealer suricata trojan

Malware Config

Extracted

Family

formbook

Version

4.1

C2

http://www.elitegamerblog.com/gsg0/

Decoy

telprix.com

multiremates.com

heytiday.com

toporganik.com

tutorincranleigh.com

oakandolivemalibu.com

ronaldvalentine.com

waytopshop.com

mythai-massage.com

matrixresults.com

teamwork256.com

qqemas.men

qnmark.com

rock-singer.com

mobiledevpros.com

miramar-agents.com

desjour.com

edensplace.net

ryanrafuls.com

xg8197.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

CustAttr .NET packer 1 IoCs

Detects CustAttr .NET packer in memory.

Processes:

resource	yara_rule
behavioral1/memory/1208-62-0x00000000001C0000-0x00000000001CB000-memory.dmp	CustAttr

Formbook Payload 3 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/684-65-0x0000000000400000-0x000000000042E000-memory.dmp	formbook
behavioral1/memory/684-66-0x000000000041EB40-mapping.dmp	formbook
behavioral1/memory/860-73-0x00000000000C0000-0x00000000000EE000-memory.dmp	formbook

Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

328 cmd.exe

pid	process
328	cmd.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

Proforma Invoice No.42037 dated 26032021 for USD.78116.pdf.exeProforma Invoice No.42037 dated 26032021 for USD.78116.pdf.exechkdsk.exe

description	pid	process	target process
PID 1208 set thread context of 684	1208	Proforma Invoice No.42037 dated 26032021 for USD.78116.pdf.exe	Proforma Invoice No.42037 dated 26032021 for USD.78116.pdf.exe
PID 684 set thread context of 1244	684	Proforma Invoice No.42037 dated 26032021 for USD.78116.pdf.exe	Explorer.EXE
PID 860 set thread context of 1244	860	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 21 IoCs

Processes:

Proforma Invoice No.42037 dated 26032021 for USD.78116.pdf.exechkdsk.exe

pid	process
684	Proforma Invoice No.42037 dated 26032021 for USD.78116.pdf.exe
684	Proforma Invoice No.42037 dated 26032021 for USD.78116.pdf.exe
860	chkdsk.exe
860	chkdsk.exe
860	chkdsk.exe
860	chkdsk.exe
860	chkdsk.exe
860	chkdsk.exe
860	chkdsk.exe
860	chkdsk.exe
860	chkdsk.exe
860	chkdsk.exe
860	chkdsk.exe
860	chkdsk.exe
860	chkdsk.exe
860	chkdsk.exe
860	chkdsk.exe
860	chkdsk.exe
860	chkdsk.exe
860	chkdsk.exe
860	chkdsk.exe

Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

Proforma Invoice No.42037 dated 26032021 for USD.78116.pdf.exechkdsk.exe

pid	process
684	Proforma Invoice No.42037 dated 26032021 for USD.78116.pdf.exe
684	Proforma Invoice No.42037 dated 26032021 for USD.78116.pdf.exe
684	Proforma Invoice No.42037 dated 26032021 for USD.78116.pdf.exe
860	chkdsk.exe
860	chkdsk.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

Proforma Invoice No.42037 dated 26032021 for USD.78116.pdf.exechkdsk.exe

description pid process

Token: SeDebugPrivilege 684 Proforma Invoice No.42037 dated 26032021 for USD.78116.pdf.exe
Token: SeDebugPrivilege 860 chkdsk.exe
Suspicious use of FindShellTrayWindow 4 IoCs

Processes:

Explorer.EXE

pid process

1244 Explorer.EXE
1244 Explorer.EXE
1244 Explorer.EXE
1244 Explorer.EXE
Suspicious use of SendNotifyMessage 4 IoCs

Processes:

Explorer.EXE

pid process

1244 Explorer.EXE
1244 Explorer.EXE
1244 Explorer.EXE
1244 Explorer.EXE

description	pid	process
Token: SeDebugPrivilege	684	Proforma Invoice No.42037 dated 26032021 for USD.78116.pdf.exe
Token: SeDebugPrivilege	860	chkdsk.exe

pid	process
1244	Explorer.EXE
1244	Explorer.EXE
1244	Explorer.EXE
1244	Explorer.EXE

pid	process
1244	Explorer.EXE
1244	Explorer.EXE
1244	Explorer.EXE
1244	Explorer.EXE

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

Proforma Invoice No.42037 dated 26032021 for USD.78116.pdf.exeExplorer.EXEchkdsk.exe

description	pid	process	target process
PID 1208 wrote to memory of 684	1208	Proforma Invoice No.42037 dated 26032021 for USD.78116.pdf.exe	Proforma Invoice No.42037 dated 26032021 for USD.78116.pdf.exe
PID 1208 wrote to memory of 684	1208	Proforma Invoice No.42037 dated 26032021 for USD.78116.pdf.exe	Proforma Invoice No.42037 dated 26032021 for USD.78116.pdf.exe
PID 1208 wrote to memory of 684	1208	Proforma Invoice No.42037 dated 26032021 for USD.78116.pdf.exe	Proforma Invoice No.42037 dated 26032021 for USD.78116.pdf.exe
PID 1208 wrote to memory of 684	1208	Proforma Invoice No.42037 dated 26032021 for USD.78116.pdf.exe	Proforma Invoice No.42037 dated 26032021 for USD.78116.pdf.exe
PID 1208 wrote to memory of 684	1208	Proforma Invoice No.42037 dated 26032021 for USD.78116.pdf.exe	Proforma Invoice No.42037 dated 26032021 for USD.78116.pdf.exe
PID 1208 wrote to memory of 684	1208	Proforma Invoice No.42037 dated 26032021 for USD.78116.pdf.exe	Proforma Invoice No.42037 dated 26032021 for USD.78116.pdf.exe
PID 1208 wrote to memory of 684	1208	Proforma Invoice No.42037 dated 26032021 for USD.78116.pdf.exe	Proforma Invoice No.42037 dated 26032021 for USD.78116.pdf.exe
PID 1244 wrote to memory of 860	1244	Explorer.EXE	chkdsk.exe
PID 1244 wrote to memory of 860	1244	Explorer.EXE	chkdsk.exe
PID 1244 wrote to memory of 860	1244	Explorer.EXE	chkdsk.exe
PID 1244 wrote to memory of 860	1244	Explorer.EXE	chkdsk.exe
PID 860 wrote to memory of 328	860	chkdsk.exe	cmd.exe
PID 860 wrote to memory of 328	860	chkdsk.exe	cmd.exe
PID 860 wrote to memory of 328	860	chkdsk.exe	cmd.exe
PID 860 wrote to memory of 328	860	chkdsk.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:1244

C:\Users\Admin\AppData\Local\Temp\Proforma Invoice No.42037 dated 26032021 for USD.78116.pdf.exe
"C:\Users\Admin\AppData\Local\Temp\Proforma Invoice No.42037 dated 26032021 for USD.78116.pdf.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1208

C:\Users\Admin\AppData\Local\Temp\Proforma Invoice No.42037 dated 26032021 for USD.78116.pdf.exe
"C:\Users\Admin\AppData\Local\Temp\Proforma Invoice No.42037 dated 26032021 for USD.78116.pdf.exe"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:684

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:860

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\Proforma Invoice No.42037 dated 26032021 for USD.78116.pdf.exe"
3⤵
- Deletes itself
PID:328

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

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Downloads

memory/328-71-0x0000000000000000-mapping.dmp

Download
memory/684-65-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/684-68-0x0000000000110000-0x0000000000124000-memory.dmp

Filesize
80KB

Download
memory/684-67-0x0000000000900000-0x0000000000C03000-memory.dmp

Filesize
3.0MB

Download
memory/684-66-0x000000000041EB40-mapping.dmp

Download
memory/860-72-0x0000000000C60000-0x0000000000C67000-memory.dmp

Filesize
28KB

Download
memory/860-70-0x0000000000000000-mapping.dmp

Download
memory/860-73-0x00000000000C0000-0x00000000000EE000-memory.dmp

Filesize
184KB

Download
memory/860-74-0x0000000002070000-0x0000000002373000-memory.dmp

Filesize
3.0MB

Download
memory/860-75-0x0000000000B80000-0x0000000000C13000-memory.dmp

Filesize
588KB

Download
memory/1208-64-0x0000000000430000-0x0000000000465000-memory.dmp

Filesize
212KB

Download
memory/1208-63-0x0000000004590000-0x000000000460A000-memory.dmp

Filesize
488KB

Download
memory/1208-62-0x00000000001C0000-0x00000000001CB000-memory.dmp

Filesize
44KB

Download
memory/1208-61-0x00000000002F0000-0x00000000002F1000-memory.dmp

Filesize
4KB

Download
memory/1208-59-0x0000000000CB0000-0x0000000000CB1000-memory.dmp

Filesize
4KB

Download
memory/1244-69-0x0000000006CC0000-0x0000000006E35000-memory.dmp

Filesize
1.5MB

Download
memory/1244-76-0x0000000003E00000-0x0000000003ECA000-memory.dmp

Filesize
808KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads