formbook | 540021aa05d8985bf6eca783d86cdada2727b5ed0b1a943cb9cdfb224a4e50f1

General

Target

Confirm!!!.exe
Size

1.1MB
MD5

7afd3b350ea6451b47be2058c07365de
SHA1

8186d625b6f406d71a27aa8ef51f52902c5c26f0
SHA256

540021aa05d8985bf6eca783d86cdada2727b5ed0b1a943cb9cdfb224a4e50f1
SHA512

02a7ec42b3d9c9f6e6b1538406b08fccd1a661c05d62b89a211443bad25acf520d78711906009f1215647971e6d7e8a65fddbe06efcc32c438e0b7e8b53d34d1

Score

10^/10

formbook rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

C2

http://www.deuxus.com/t052/

Decoy

ladybug-learning.com

unforgottenstory.com

oldmopaiv.xyz

natashaexim.com

hannahmcelgunn.com

retargetingmachines.info

njoconline.com

unicornlankadelivery.com

giftkerala.com

englishfordoctors.online

schatzilandrvresort.com

brujoisaac.com

basiccampinggear.com

escapees.today

dgyxsy888.com

stevebana.xyz

mimozakebap.com

ezdoff.com

pluumyspalace.com

shaoshanshan.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
behavioral2/memory/2596-125-0x0000000000400000-0x000000000042E000-memory.dmp	formbook
behavioral2/memory/2596-126-0x000000000041ECC0-mapping.dmp	formbook
behavioral2/memory/1504-134-0x00000000006A0000-0x00000000006CE000-memory.dmp	formbook

Suspicious use of SetThreadContext 3 IoCs

Processes:

Confirm!!!.exeConfirm!!!.exechkdsk.exe

description	pid	process	target process
PID 640 set thread context of 2596	640	Confirm!!!.exe	Confirm!!!.exe
PID 2596 set thread context of 2428	2596	Confirm!!!.exe	Explorer.EXE
PID 1504 set thread context of 2428	1504	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 18 IoCs

Processes:

Confirm!!!.exechkdsk.exe

pid	process
2596	Confirm!!!.exe
2596	Confirm!!!.exe
2596	Confirm!!!.exe
2596	Confirm!!!.exe
1504	chkdsk.exe
1504	chkdsk.exe
1504	chkdsk.exe
1504	chkdsk.exe
1504	chkdsk.exe
1504	chkdsk.exe
1504	chkdsk.exe
1504	chkdsk.exe
1504	chkdsk.exe
1504	chkdsk.exe
1504	chkdsk.exe
1504	chkdsk.exe
1504	chkdsk.exe
1504	chkdsk.exe

Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

Confirm!!!.exechkdsk.exe

pid process

2596 Confirm!!!.exe
2596 Confirm!!!.exe
2596 Confirm!!!.exe
1504 chkdsk.exe
1504 chkdsk.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

Confirm!!!.exeConfirm!!!.exechkdsk.exe

description pid process

Token: SeDebugPrivilege 640 Confirm!!!.exe
Token: SeDebugPrivilege 2596 Confirm!!!.exe
Token: SeDebugPrivilege 1504 chkdsk.exe

description	pid	process
Token: SeDebugPrivilege	640	Confirm!!!.exe
Token: SeDebugPrivilege	2596	Confirm!!!.exe
Token: SeDebugPrivilege	1504	chkdsk.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

Confirm!!!.exeExplorer.EXEchkdsk.exe

description	pid	process	target process
PID 640 wrote to memory of 2596	640	Confirm!!!.exe	Confirm!!!.exe
PID 640 wrote to memory of 2596	640	Confirm!!!.exe	Confirm!!!.exe
PID 640 wrote to memory of 2596	640	Confirm!!!.exe	Confirm!!!.exe
PID 640 wrote to memory of 2596	640	Confirm!!!.exe	Confirm!!!.exe
PID 640 wrote to memory of 2596	640	Confirm!!!.exe	Confirm!!!.exe
PID 640 wrote to memory of 2596	640	Confirm!!!.exe	Confirm!!!.exe
PID 2428 wrote to memory of 1504	2428	Explorer.EXE	chkdsk.exe
PID 2428 wrote to memory of 1504	2428	Explorer.EXE	chkdsk.exe
PID 2428 wrote to memory of 1504	2428	Explorer.EXE	chkdsk.exe
PID 1504 wrote to memory of 3244	1504	chkdsk.exe	cmd.exe
PID 1504 wrote to memory of 3244	1504	chkdsk.exe	cmd.exe
PID 1504 wrote to memory of 3244	1504	chkdsk.exe	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:2428

C:\Users\Admin\AppData\Local\Temp\Confirm!!!.exe
"C:\Users\Admin\AppData\Local\Temp\Confirm!!!.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:640

C:\Users\Admin\AppData\Local\Temp\Confirm!!!.exe
"C:\Users\Admin\AppData\Local\Temp\Confirm!!!.exe"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:2596

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:1504

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\Confirm!!!.exe"
3⤵
PID:3244

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/640-114-0x0000000000380000-0x0000000000381000-memory.dmp

Filesize
4KB

Download
memory/640-116-0x0000000004D00000-0x0000000004D01000-memory.dmp

Filesize
4KB

Download
memory/640-117-0x00000000052A0000-0x00000000052A1000-memory.dmp

Filesize
4KB

Download
memory/640-118-0x0000000004DA0000-0x0000000004DA1000-memory.dmp

Filesize
4KB

Download
memory/640-119-0x0000000004DA0000-0x000000000529E000-memory.dmp

Filesize
5.0MB

Download
memory/640-120-0x0000000004CD0000-0x0000000004CD1000-memory.dmp

Filesize
4KB

Download
memory/640-121-0x0000000004FB0000-0x0000000004FB1000-memory.dmp

Filesize
4KB

Download
memory/640-122-0x0000000007210000-0x000000000721E000-memory.dmp

Filesize
56KB

Download
memory/640-123-0x0000000000CF0000-0x0000000000D6D000-memory.dmp

Filesize
500KB

Download
memory/640-124-0x0000000009700000-0x0000000009738000-memory.dmp

Filesize
224KB

Download
memory/1504-131-0x0000000000000000-mapping.dmp

Download
memory/1504-134-0x00000000006A0000-0x00000000006CE000-memory.dmp

Filesize
184KB

Download
memory/1504-133-0x00000000008D0000-0x00000000008DA000-memory.dmp

Filesize
40KB

Download
memory/1504-135-0x0000000004D60000-0x0000000005080000-memory.dmp

Filesize
3.1MB

Download
memory/1504-136-0x0000000004AC0000-0x0000000004B53000-memory.dmp

Filesize
588KB

Download
memory/2428-130-0x00000000064E0000-0x00000000065E3000-memory.dmp

Filesize
1.0MB

Download
memory/2428-137-0x00000000049F0000-0x0000000004B30000-memory.dmp

Filesize
1.2MB

Download
memory/2596-126-0x000000000041ECC0-mapping.dmp

Download
memory/2596-128-0x0000000001240000-0x0000000001560000-memory.dmp

Filesize
3.1MB

Download
memory/2596-129-0x0000000001140000-0x0000000001154000-memory.dmp

Filesize
80KB

Download
memory/2596-125-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/3244-132-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

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Downloads