formbook | 7952c76d1d86927893a2ef8ca0a23bb1b45af38565f2ad9cea09a942bd5059f8

General

Target

triage_dropped_file.exe
Size

704KB
MD5

6b25cd644f183af7c7447ba2d658e8c5
SHA1

b3fee68e0d04e03c34ba546bc714096d13641815
SHA256

7952c76d1d86927893a2ef8ca0a23bb1b45af38565f2ad9cea09a942bd5059f8
SHA512

877ca781d89283c5bf7e26e45dce561d52c7a580aa08b172313443681494bf2aa24664a42ca95b6d88e76b43196c51997509098dd0979459ebe9ff48a6f658a9

Score

10^/10

formbook m56u rat spyware stealer suricata trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

m56u

Decoy

tercantiq.com

fortvillechicken.net

spiritsandtheb.com

alliant-inc.biz

yh1902.com

xiaodewenhua.net

cityjobs.xyz

seniorlivingwisconsin.com

piadagrilla.com

truistfinancebank.online

nft-fashionlover.com

hangmandownload.com

chun888.xyz

lemonviral.com

getagrip.network

daniellepinnock.info

chiswickstudios.com

essayservicee.com

bharatpragatifoundation.com

800vn.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: ET MALWARE FormBook CnC Checkin (GET)
suricata

Formbook Payload 6 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/1448-63-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/1448-64-0x000000000041F140-mapping.dmp	formbook
behavioral1/memory/1448-66-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/1448-74-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/1132-77-0x0000000000080000-0x00000000000AF000-memory.dmp	formbook
behavioral1/memory/1132-81-0x0000000000080000-0x00000000000AF000-memory.dmp	formbook

Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

1220 cmd.exe

pid	process
1220	cmd.exe

Suspicious use of SetThreadContext 4 IoCs

Processes:

triage_dropped_file.exetriage_dropped_file.exeNETSTAT.EXE

description	pid	process	target process
PID 836 set thread context of 1448	836	triage_dropped_file.exe	triage_dropped_file.exe
PID 1448 set thread context of 1404	1448	triage_dropped_file.exe	Explorer.EXE
PID 1448 set thread context of 1404	1448	triage_dropped_file.exe	Explorer.EXE
PID 1132 set thread context of 1404	1132	NETSTAT.EXE	Explorer.EXE

Gathers network information 2 TTPs 1 IoCs
Uses commandline utility to view network configuration.

System Information Discovery
T1082

Command-Line Interface
T1059

Processes:

NETSTAT.EXE

pid process

1132 NETSTAT.EXE

pid	process
1132	NETSTAT.EXE

Suspicious behavior: EnumeratesProcesses 22 IoCs

Processes:

triage_dropped_file.exeNETSTAT.EXE

pid	process
1448	triage_dropped_file.exe
1448	triage_dropped_file.exe
1448	triage_dropped_file.exe
1132	NETSTAT.EXE
1132	NETSTAT.EXE
1132	NETSTAT.EXE
1132	NETSTAT.EXE
1132	NETSTAT.EXE
1132	NETSTAT.EXE
1132	NETSTAT.EXE
1132	NETSTAT.EXE
1132	NETSTAT.EXE
1132	NETSTAT.EXE
1132	NETSTAT.EXE
1132	NETSTAT.EXE
1132	NETSTAT.EXE
1132	NETSTAT.EXE
1132	NETSTAT.EXE
1132	NETSTAT.EXE
1132	NETSTAT.EXE
1132	NETSTAT.EXE
1132	NETSTAT.EXE

Suspicious behavior: MapViewOfSection 6 IoCs

Processes:

triage_dropped_file.exeNETSTAT.EXE

pid process

1448 triage_dropped_file.exe
1448 triage_dropped_file.exe
1448 triage_dropped_file.exe
1448 triage_dropped_file.exe
1132 NETSTAT.EXE
1132 NETSTAT.EXE
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

triage_dropped_file.exeNETSTAT.EXE

description pid process

Token: SeDebugPrivilege 1448 triage_dropped_file.exe
Token: SeDebugPrivilege 1132 NETSTAT.EXE
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

Explorer.EXE

pid process

1404 Explorer.EXE
1404 Explorer.EXE
Suspicious use of SendNotifyMessage 2 IoCs

Processes:

Explorer.EXE

pid process

1404 Explorer.EXE
1404 Explorer.EXE

description	pid	process
Token: SeDebugPrivilege	1448	triage_dropped_file.exe
Token: SeDebugPrivilege	1132	NETSTAT.EXE

pid	process
1404	Explorer.EXE
1404	Explorer.EXE

pid	process
1404	Explorer.EXE
1404	Explorer.EXE

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

triage_dropped_file.exetriage_dropped_file.exeNETSTAT.EXE

description	pid	process	target process
PID 836 wrote to memory of 1448	836	triage_dropped_file.exe	triage_dropped_file.exe
PID 836 wrote to memory of 1448	836	triage_dropped_file.exe	triage_dropped_file.exe
PID 836 wrote to memory of 1448	836	triage_dropped_file.exe	triage_dropped_file.exe
PID 836 wrote to memory of 1448	836	triage_dropped_file.exe	triage_dropped_file.exe
PID 836 wrote to memory of 1448	836	triage_dropped_file.exe	triage_dropped_file.exe
PID 836 wrote to memory of 1448	836	triage_dropped_file.exe	triage_dropped_file.exe
PID 836 wrote to memory of 1448	836	triage_dropped_file.exe	triage_dropped_file.exe
PID 1448 wrote to memory of 1132	1448	triage_dropped_file.exe	NETSTAT.EXE
PID 1448 wrote to memory of 1132	1448	triage_dropped_file.exe	NETSTAT.EXE
PID 1448 wrote to memory of 1132	1448	triage_dropped_file.exe	NETSTAT.EXE
PID 1448 wrote to memory of 1132	1448	triage_dropped_file.exe	NETSTAT.EXE
PID 1132 wrote to memory of 1220	1132	NETSTAT.EXE	cmd.exe
PID 1132 wrote to memory of 1220	1132	NETSTAT.EXE	cmd.exe
PID 1132 wrote to memory of 1220	1132	NETSTAT.EXE	cmd.exe
PID 1132 wrote to memory of 1220	1132	NETSTAT.EXE	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:1404

C:\Users\Admin\AppData\Local\Temp\triage_dropped_file.exe
"C:\Users\Admin\AppData\Local\Temp\triage_dropped_file.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:836

C:\Users\Admin\AppData\Local\Temp\triage_dropped_file.exe
"C:\Users\Admin\AppData\Local\Temp\triage_dropped_file.exe"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1448

C:\Windows\SysWOW64\NETSTAT.EXE
"C:\Windows\SysWOW64\NETSTAT.EXE"
4⤵
- Suspicious use of SetThreadContext
- Gathers network information
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1132

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\triage_dropped_file.exe"
5⤵
- Deletes itself
PID:1220

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Command-Line Interface

1

T1059

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/836-54-0x00000000002D0000-0x0000000000386000-memory.dmp

Filesize
728KB

Download
memory/836-55-0x0000000075721000-0x0000000075723000-memory.dmp

Filesize
8KB

Download
memory/836-56-0x00000000004F0000-0x0000000000506000-memory.dmp

Filesize
88KB

Download
memory/836-57-0x0000000000500000-0x000000000050A000-memory.dmp

Filesize
40KB

Download
memory/836-58-0x0000000005010000-0x000000000507C000-memory.dmp

Filesize
432KB

Download
memory/836-59-0x00000000020E0000-0x0000000002114000-memory.dmp

Filesize
208KB

Download
memory/1132-81-0x0000000000080000-0x00000000000AF000-memory.dmp

Filesize
188KB

Download
memory/1132-73-0x0000000000000000-mapping.dmp

Download
memory/1132-79-0x0000000001F80000-0x0000000002013000-memory.dmp

Filesize
588KB

Download
memory/1132-77-0x0000000000080000-0x00000000000AF000-memory.dmp

Filesize
188KB

Download
memory/1132-78-0x0000000002250000-0x0000000002553000-memory.dmp

Filesize
3.0MB

Download
memory/1132-76-0x0000000000850000-0x0000000000859000-memory.dmp

Filesize
36KB

Download
memory/1220-75-0x0000000000000000-mapping.dmp

Download
memory/1404-82-0x0000000006CF0000-0x0000000006DD3000-memory.dmp

Filesize
908KB

Download
memory/1404-80-0x0000000006CF0000-0x0000000006DD3000-memory.dmp

Filesize
908KB

Download
memory/1404-69-0x0000000004DD0000-0x0000000004F7A000-memory.dmp

Filesize
1.7MB

Download
memory/1404-72-0x0000000007720000-0x00000000078CB000-memory.dmp

Filesize
1.7MB

Download
memory/1448-60-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1448-74-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1448-71-0x0000000000250000-0x0000000000264000-memory.dmp

Filesize
80KB

Download
memory/1448-68-0x0000000000180000-0x0000000000194000-memory.dmp

Filesize
80KB

Download
memory/1448-67-0x00000000009E0000-0x0000000000CE3000-memory.dmp

Filesize
3.0MB

Download
memory/1448-66-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1448-64-0x000000000041F140-mapping.dmp

Download
memory/1448-63-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1448-61-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

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Downloads