formbook | 7a605579f572e0ca0067f031db05ceec4f0445a09aae0a57bc36b14e5874d734

General

Target

MT103-203674982.exe
Size

247KB
MD5

400ff0ca3ab2676f072aea68870ef70d
SHA1

dfd2f2443fd103089be9ab9f6fe651399b3d19f4
SHA256

7a605579f572e0ca0067f031db05ceec4f0445a09aae0a57bc36b14e5874d734
SHA512

a441c8e2b7aaf60a46a95077d4296888cc0bebc694e0fefb7501bab664d2fe5a81de8ec703b66df61372dfc3a09d8d918ed9ee952dbb558181a88f535b8d329b

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 4 IoCs

rat

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\binn.exe	formbook
C:\Users\Admin\AppData\Local\Temp\binn.exe	formbook
behavioral2/memory/4968-140-0x0000000000900000-0x000000000092F000-memory.dmp	formbook
behavioral2/memory/4968-144-0x0000000000900000-0x000000000092F000-memory.dmp	formbook

Executes dropped EXE 1 IoCs

Processes:

binn.exe

pid process

2396 binn.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

MT103-203674982.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Control Panel\International\Geo\Nation	MT103-203674982.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

binn.exerundll32.exe

description	pid	process	target process
PID 2396 set thread context of 2432	2396	binn.exe	Explorer.EXE
PID 4968 set thread context of 2432	4968	rundll32.exe	Explorer.EXE

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 58 IoCs

Processes:

binn.exerundll32.exe

pid	process
2396	binn.exe
2396	binn.exe
2396	binn.exe
2396	binn.exe
4968	rundll32.exe
4968	rundll32.exe
4968	rundll32.exe
4968	rundll32.exe
4968	rundll32.exe
4968	rundll32.exe
4968	rundll32.exe
4968	rundll32.exe
4968	rundll32.exe
4968	rundll32.exe
4968	rundll32.exe
4968	rundll32.exe
4968	rundll32.exe
4968	rundll32.exe
4968	rundll32.exe
4968	rundll32.exe
4968	rundll32.exe
4968	rundll32.exe
4968	rundll32.exe
4968	rundll32.exe
4968	rundll32.exe
4968	rundll32.exe
4968	rundll32.exe
4968	rundll32.exe
4968	rundll32.exe
4968	rundll32.exe
4968	rundll32.exe
4968	rundll32.exe
4968	rundll32.exe
4968	rundll32.exe
4968	rundll32.exe
4968	rundll32.exe
4968	rundll32.exe
4968	rundll32.exe
4968	rundll32.exe
4968	rundll32.exe
4968	rundll32.exe
4968	rundll32.exe
4968	rundll32.exe
4968	rundll32.exe
4968	rundll32.exe
4968	rundll32.exe
4968	rundll32.exe
4968	rundll32.exe
4968	rundll32.exe
4968	rundll32.exe
4968	rundll32.exe
4968	rundll32.exe
4968	rundll32.exe
4968	rundll32.exe
4968	rundll32.exe
4968	rundll32.exe
4968	rundll32.exe
4968	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

2432 Explorer.EXE
Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

binn.exerundll32.exe

pid process

2396 binn.exe
2396 binn.exe
2396 binn.exe
4968 rundll32.exe
4968 rundll32.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

binn.exerundll32.exe

description pid process

Token: SeDebugPrivilege 2396 binn.exe
Token: SeDebugPrivilege 4968 rundll32.exe

pid	process
2432	Explorer.EXE

description	pid	process
Token: SeDebugPrivilege	2396	binn.exe
Token: SeDebugPrivilege	4968	rundll32.exe

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

MT103-203674982.exeExplorer.EXErundll32.exe

description	pid	process	target process
PID 2308 wrote to memory of 2396	2308	MT103-203674982.exe	binn.exe
PID 2308 wrote to memory of 2396	2308	MT103-203674982.exe	binn.exe
PID 2308 wrote to memory of 2396	2308	MT103-203674982.exe	binn.exe
PID 2432 wrote to memory of 4968	2432	Explorer.EXE	rundll32.exe
PID 2432 wrote to memory of 4968	2432	Explorer.EXE	rundll32.exe
PID 2432 wrote to memory of 4968	2432	Explorer.EXE	rundll32.exe
PID 4968 wrote to memory of 4924	4968	rundll32.exe	cmd.exe
PID 4968 wrote to memory of 4924	4968	rundll32.exe	cmd.exe
PID 4968 wrote to memory of 4924	4968	rundll32.exe	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:2432

C:\Users\Admin\AppData\Local\Temp\MT103-203674982.exe
"C:\Users\Admin\AppData\Local\Temp\MT103-203674982.exe"
2⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2308

C:\Users\Admin\AppData\Local\Temp\binn.exe
"C:\Users\Admin\AppData\Local\Temp\binn.exe"
3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:2396

C:\Windows\SysWOW64\rundll32.exe
"C:\Windows\SysWOW64\rundll32.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4968

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\binn.exe"
3⤵
PID:4924

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\binn.exe
Filesize
185KB

MD5
e1f5a85acd28c0ede994855fa013aefa

SHA1
186f3d8528f4016285d3d37adb10b368eea6a2c3

SHA256
6c9b4c99b8aa445727927fc0a209bede836c9465b3de875cbf34425347cb0cfd

SHA512
a4671c682e78a32dd013c71ab53c133564c8c04bfda4ce2c96e3d7385f51c4f27d1ef26ba5e991d6b24ffdb1602f85f114d3be5195ad618b7c91ebd7fe049337

Download Submit
C:\Users\Admin\AppData\Local\Temp\binn.exe
Filesize
185KB

MD5
e1f5a85acd28c0ede994855fa013aefa

SHA1
186f3d8528f4016285d3d37adb10b368eea6a2c3

SHA256
6c9b4c99b8aa445727927fc0a209bede836c9465b3de875cbf34425347cb0cfd

SHA512
a4671c682e78a32dd013c71ab53c133564c8c04bfda4ce2c96e3d7385f51c4f27d1ef26ba5e991d6b24ffdb1602f85f114d3be5195ad618b7c91ebd7fe049337

Download Submit
memory/2308-130-0x0000000000930000-0x0000000000974000-memory.dmp

Filesize
272KB

Download
memory/2396-131-0x0000000000000000-mapping.dmp

Download
memory/2396-134-0x0000000000DF0000-0x000000000113A000-memory.dmp

Filesize
3.3MB

Download
memory/2396-135-0x0000000000CC0000-0x0000000000CD4000-memory.dmp

Filesize
80KB

Download
memory/2432-143-0x00000000082E0000-0x0000000008413000-memory.dmp

Filesize
1.2MB

Download
memory/2432-136-0x00000000081F0000-0x00000000082DD000-memory.dmp

Filesize
948KB

Download
memory/2432-145-0x00000000082E0000-0x0000000008413000-memory.dmp

Filesize
1.2MB

Download
memory/4924-138-0x0000000000000000-mapping.dmp

Download
memory/4968-140-0x0000000000900000-0x000000000092F000-memory.dmp

Filesize
188KB

Download
memory/4968-141-0x0000000002810000-0x0000000002B5A000-memory.dmp

Filesize
3.3MB

Download
memory/4968-142-0x00000000025B0000-0x0000000002643000-memory.dmp

Filesize
588KB

Download
memory/4968-139-0x00000000000E0000-0x00000000000F4000-memory.dmp

Filesize
80KB

Download
memory/4968-144-0x0000000000900000-0x000000000092F000-memory.dmp

Filesize
188KB

Download
memory/4968-137-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads