formbook | f5f2c341e235dbe728a9545c0e308f1c3a13c73505da2f72f07874cd63b07031

General

Target

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

612KB
MD5

1b4ef34299d4b6b9d6c8af470be15953
SHA1

5c805afe83fd41d04bc3f119e1a635c2b1ae5f65
SHA256

f5f2c341e235dbe728a9545c0e308f1c3a13c73505da2f72f07874cd63b07031
SHA512

d97d1eaa7071fe5bfc7c0a5908fafb8c6950545887b734d802eea16fbf9904587cd1934984d89ade71f8b1a2e0008c214353adc4ff9ba207035fcfc811f80179

Score

10^/10

formbook rat spyware stealer 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

CustAttr .NET packer 1 IoCs

Detects CustAttr .NET packer in memory.

Processes:

resource	yara_rule
behavioral1/memory/2016-62-0x00000000002C0000-0x00000000002CB000-memory.dmp	CustAttr

Formbook Payload 3 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/1028-66-0x000000000041EB40-mapping.dmp	formbook
behavioral1/memory/1028-65-0x0000000000400000-0x000000000042E000-memory.dmp	formbook
behavioral1/memory/1808-72-0x0000000000080000-0x00000000000AE000-memory.dmp	formbook

Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

1560 cmd.exe

pid	process
1560	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 2016 set thread context of 1028	2016	Proforma Invoice No.42037 dated 26032021 for USD.78116.pdf.exe	Proforma Invoice No.42037 dated 26032021 for USD.78116.pdf.exe
PID 1028 set thread context of 1220	1028	Proforma Invoice No.42037 dated 26032021 for USD.78116.pdf.exe	Explorer.EXE
PID 1808 set thread context of 1220	1808	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 20 IoCs

Processes:

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

pid	process
1028	Proforma Invoice No.42037 dated 26032021 for USD.78116.pdf.exe
1028	Proforma Invoice No.42037 dated 26032021 for USD.78116.pdf.exe
1808	chkdsk.exe
1808	chkdsk.exe
1808	chkdsk.exe
1808	chkdsk.exe
1808	chkdsk.exe
1808	chkdsk.exe
1808	chkdsk.exe
1808	chkdsk.exe
1808	chkdsk.exe
1808	chkdsk.exe
1808	chkdsk.exe
1808	chkdsk.exe
1808	chkdsk.exe
1808	chkdsk.exe
1808	chkdsk.exe
1808	chkdsk.exe
1808	chkdsk.exe
1808	chkdsk.exe

Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

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

pid	process
1028	Proforma Invoice No.42037 dated 26032021 for USD.78116.pdf.exe
1028	Proforma Invoice No.42037 dated 26032021 for USD.78116.pdf.exe
1028	Proforma Invoice No.42037 dated 26032021 for USD.78116.pdf.exe
1808	chkdsk.exe
1808	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 1028 Proforma Invoice No.42037 dated 26032021 for USD.78116.pdf.exe
Token: SeDebugPrivilege 1808 chkdsk.exe
Suspicious use of FindShellTrayWindow 4 IoCs

Processes:

Explorer.EXE

pid process

1220 Explorer.EXE
1220 Explorer.EXE
1220 Explorer.EXE
1220 Explorer.EXE
Suspicious use of SendNotifyMessage 4 IoCs

Processes:

Explorer.EXE

pid process

1220 Explorer.EXE
1220 Explorer.EXE
1220 Explorer.EXE
1220 Explorer.EXE

description	pid	process
Token: SeDebugPrivilege	1028	Proforma Invoice No.42037 dated 26032021 for USD.78116.pdf.exe
Token: SeDebugPrivilege	1808	chkdsk.exe

pid	process
1220	Explorer.EXE
1220	Explorer.EXE
1220	Explorer.EXE
1220	Explorer.EXE

pid	process
1220	Explorer.EXE
1220	Explorer.EXE
1220	Explorer.EXE
1220	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 2016 wrote to memory of 1028	2016	Proforma Invoice No.42037 dated 26032021 for USD.78116.pdf.exe	Proforma Invoice No.42037 dated 26032021 for USD.78116.pdf.exe
PID 2016 wrote to memory of 1028	2016	Proforma Invoice No.42037 dated 26032021 for USD.78116.pdf.exe	Proforma Invoice No.42037 dated 26032021 for USD.78116.pdf.exe
PID 2016 wrote to memory of 1028	2016	Proforma Invoice No.42037 dated 26032021 for USD.78116.pdf.exe	Proforma Invoice No.42037 dated 26032021 for USD.78116.pdf.exe
PID 2016 wrote to memory of 1028	2016	Proforma Invoice No.42037 dated 26032021 for USD.78116.pdf.exe	Proforma Invoice No.42037 dated 26032021 for USD.78116.pdf.exe
PID 2016 wrote to memory of 1028	2016	Proforma Invoice No.42037 dated 26032021 for USD.78116.pdf.exe	Proforma Invoice No.42037 dated 26032021 for USD.78116.pdf.exe
PID 2016 wrote to memory of 1028	2016	Proforma Invoice No.42037 dated 26032021 for USD.78116.pdf.exe	Proforma Invoice No.42037 dated 26032021 for USD.78116.pdf.exe
PID 2016 wrote to memory of 1028	2016	Proforma Invoice No.42037 dated 26032021 for USD.78116.pdf.exe	Proforma Invoice No.42037 dated 26032021 for USD.78116.pdf.exe
PID 1220 wrote to memory of 1808	1220	Explorer.EXE	chkdsk.exe
PID 1220 wrote to memory of 1808	1220	Explorer.EXE	chkdsk.exe
PID 1220 wrote to memory of 1808	1220	Explorer.EXE	chkdsk.exe
PID 1220 wrote to memory of 1808	1220	Explorer.EXE	chkdsk.exe
PID 1808 wrote to memory of 1560	1808	chkdsk.exe	cmd.exe
PID 1808 wrote to memory of 1560	1808	chkdsk.exe	cmd.exe
PID 1808 wrote to memory of 1560	1808	chkdsk.exe	cmd.exe
PID 1808 wrote to memory of 1560	1808	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:1220

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:2016

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:1028

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:1808

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:1560

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/1028-67-0x00000000008B0000-0x0000000000BB3000-memory.dmp

Filesize
3.0MB

Download
memory/1028-68-0x00000000001D0000-0x00000000001E4000-memory.dmp

Filesize
80KB

Download
memory/1028-66-0x000000000041EB40-mapping.dmp

Download
memory/1028-65-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/1220-76-0x00000000080A0000-0x00000000081F3000-memory.dmp

Filesize
1.3MB

Download
memory/1220-69-0x0000000006F60000-0x00000000070EC000-memory.dmp

Filesize
1.5MB

Download
memory/1560-73-0x0000000000000000-mapping.dmp

Download
memory/1808-72-0x0000000000080000-0x00000000000AE000-memory.dmp

Filesize
184KB

Download
memory/1808-70-0x0000000000000000-mapping.dmp

Download
memory/1808-71-0x00000000008A0000-0x00000000008A7000-memory.dmp

Filesize
28KB

Download
memory/1808-74-0x0000000001FD0000-0x00000000022D3000-memory.dmp

Filesize
3.0MB

Download
memory/1808-75-0x00000000022E0000-0x0000000002373000-memory.dmp

Filesize
588KB

Download
memory/2016-64-0x0000000000440000-0x0000000000475000-memory.dmp

Filesize
212KB

Download
memory/2016-63-0x0000000004F00000-0x0000000004F79000-memory.dmp

Filesize
484KB

Download
memory/2016-59-0x0000000001120000-0x0000000001121000-memory.dmp

Filesize
4KB

Download
memory/2016-62-0x00000000002C0000-0x00000000002CB000-memory.dmp

Filesize
44KB

Download
memory/2016-61-0x0000000004D10000-0x0000000004D11000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads