formbook | 21f49ea6e105c22882a9fb0065803deee18eddb76767a30ddade2e2725eb65d9

General

Target

IRS_Covid-19_Relief_Payment_Notice_pdf.exe
Size

84KB
MD5

5525bb8a978d3ac15812c8d8ca9b8a57
SHA1

dcb9549ff9c290e056f83639ad546b03206a0806
SHA256

21f49ea6e105c22882a9fb0065803deee18eddb76767a30ddade2e2725eb65d9
SHA512

0e5504ee2fc22ce87c1cac663e0c4cd76227025da20c2903d63ddafc0fc8a270d56a90b89c31d8ee448a61f881ace27037beb623f4409b9d1020a6b2a0a9f35b

Score

10^/10

formbook rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

C2

http://www.greatamericapolling.com/71m/

Decoy

heartprintclub.com

artstudio888.com

a2zitsol.com

azarblock.com

designwithravi.com

twoforksbakery.com

fundacionsinlimiteips.com

alephconference.site

smallpeo.com

ingpatrimoine.com

smartpancake.icu

sakiaza.com

hamptoninnbelton.com

captainamericashirts.com

belvederepublishing.com

trollingguide.com

sfgproposal.com

themindofafunnygirl.com

mishkatelm.com

biodis.cloud

Signatures

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

Formbook Payload 1 IoCs

rat

Processes:

resource	yara_rule
behavioral2/memory/2724-8-0x0000000000401000-0x0000000000541000-memory.dmp	formbook

Suspicious use of NtSetInformationThreadHideFromDebugger 3 IoCs

Processes:

IRS_Covid-19_Relief_Payment_Notice_pdf.exeIRS_Covid-19_Relief_Payment_Notice_pdf.exe

pid process

972 IRS_Covid-19_Relief_Payment_Notice_pdf.exe
2724 IRS_Covid-19_Relief_Payment_Notice_pdf.exe
2724 IRS_Covid-19_Relief_Payment_Notice_pdf.exe

pid	process
972	IRS_Covid-19_Relief_Payment_Notice_pdf.exe
2724	IRS_Covid-19_Relief_Payment_Notice_pdf.exe
2724	IRS_Covid-19_Relief_Payment_Notice_pdf.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

IRS_Covid-19_Relief_Payment_Notice_pdf.exe

description	pid	process	target process
PID 972 set thread context of 2724	972	IRS_Covid-19_Relief_Payment_Notice_pdf.exe	IRS_Covid-19_Relief_Payment_Notice_pdf.exe

Modifies system certificate store 2 TTPs 2 IoCs

evasion spyware trojan

Install Root Certificate

T1130

Modify Registry

T1112

Processes:

IRS_Covid-19_Relief_Payment_Notice_pdf.exe

description	ioc	process
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349\Blob = 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	IRS_Covid-19_Relief_Payment_Notice_pdf.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349	IRS_Covid-19_Relief_Payment_Notice_pdf.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

IRS_Covid-19_Relief_Payment_Notice_pdf.exe

pid process

2724 IRS_Covid-19_Relief_Payment_Notice_pdf.exe
2724 IRS_Covid-19_Relief_Payment_Notice_pdf.exe
Suspicious behavior: MapViewOfSection 1 IoCs

Processes:

IRS_Covid-19_Relief_Payment_Notice_pdf.exe

pid process

972 IRS_Covid-19_Relief_Payment_Notice_pdf.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

IRS_Covid-19_Relief_Payment_Notice_pdf.exe

pid process

972 IRS_Covid-19_Relief_Payment_Notice_pdf.exe

pid	process
2724	IRS_Covid-19_Relief_Payment_Notice_pdf.exe
2724	IRS_Covid-19_Relief_Payment_Notice_pdf.exe

pid	process
972	IRS_Covid-19_Relief_Payment_Notice_pdf.exe

pid	process
972	IRS_Covid-19_Relief_Payment_Notice_pdf.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

IRS_Covid-19_Relief_Payment_Notice_pdf.exe

description	pid	process	target process
PID 972 wrote to memory of 2724	972	IRS_Covid-19_Relief_Payment_Notice_pdf.exe	IRS_Covid-19_Relief_Payment_Notice_pdf.exe
PID 972 wrote to memory of 2724	972	IRS_Covid-19_Relief_Payment_Notice_pdf.exe	IRS_Covid-19_Relief_Payment_Notice_pdf.exe
PID 972 wrote to memory of 2724	972	IRS_Covid-19_Relief_Payment_Notice_pdf.exe	IRS_Covid-19_Relief_Payment_Notice_pdf.exe
PID 972 wrote to memory of 2724	972	IRS_Covid-19_Relief_Payment_Notice_pdf.exe	IRS_Covid-19_Relief_Payment_Notice_pdf.exe

C:\Users\Admin\AppData\Local\Temp\IRS_Covid-19_Relief_Payment_Notice_pdf.exe
"C:\Users\Admin\AppData\Local\Temp\IRS_Covid-19_Relief_Payment_Notice_pdf.exe"
1⤵
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:972

C:\Users\Admin\AppData\Local\Temp\IRS_Covid-19_Relief_Payment_Notice_pdf.exe
"C:\Users\Admin\AppData\Local\Temp\IRS_Covid-19_Relief_Payment_Notice_pdf.exe"
2⤵
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Modifies system certificate store
- Suspicious behavior: EnumeratesProcesses
PID:2724

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

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Downloads

memory/972-4-0x0000000004AF0000-0x0000000004AFE000-memory.dmp

Filesize
56KB

Download
memory/2724-5-0x0000000000401498-mapping.dmp

Download
memory/2724-6-0x0000000000401000-0x00000000004FD000-memory.dmp

Filesize
1008KB

Download
memory/2724-7-0x0000000000560000-0x0000000000660000-memory.dmp

Filesize
1024KB

Download
memory/2724-8-0x0000000000401000-0x0000000000541000-memory.dmp

Filesize
1.2MB

Download
memory/2724-9-0x000000001E840000-0x000000001EB60000-memory.dmp

Filesize
3.1MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads