formbook | a88db831c2dbd27895d7d042a3e4e604bd82caad37d51fccc76dfb81d884ffba

General

Target

new po775.exe
Size

742KB
MD5

e5c21682444f59793a1c2704d90ead6d
SHA1

76b0a20b9b86057e42df99e5f5f30be57a06f320
SHA256

a88db831c2dbd27895d7d042a3e4e604bd82caad37d51fccc76dfb81d884ffba
SHA512

a58dba7b794bcd2fb8d966af8a9c1a5e3c08a17e69351c28819b4b5a22419e315433d6169d73e96d891cc1c6c3a365d341c6d06faf6209fcd2e167a4b77b1e05

Score

10^/10

formbook evasion rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

C2

http://www.firedoom.com/sbmh/

Decoy

edlasyarns.com

rettexo.com

friendlyksa.com

westhighlandwaytours.com

goudmarket.com

turkime.com

wellnysdirect.com

handydanny.net

ylccmakq.com

benefits-sherpa.com

sousolutions.net

lspcall.com

makgxoimisitzer.info

katrinarask.com

istanbulconsulter.net

mingjiaxuan.com

faculdadegraca.com

kikegbwebdesign.com

69ase.com

downrangedynamics.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
behavioral1/memory/268-6-0x0000000000400000-0x000000000042E000-memory.dmp	formbook
behavioral1/memory/268-7-0x000000000041ECD0-mapping.dmp	formbook
behavioral1/memory/644-8-0x0000000000000000-mapping.dmp	formbook

Looks for VirtualBox Guest Additions in registry 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497
Looks for VMWare Tools registry key 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497

Checks BIOS information in registry 2 TTPs 2 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

new po775.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	new po775.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	new po775.exe

Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

1348 cmd.exe

pid	process
1348	cmd.exe

Maps connected drives based on registry 3 TTPs 2 IoCs

Disk information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Processes:

new po775.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	new po775.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0	new po775.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

new po775.exenew po775.exemstsc.exe

description	pid	process	target process
PID 1732 set thread context of 268	1732	new po775.exe	new po775.exe
PID 268 set thread context of 1268	268	new po775.exe	Explorer.EXE
PID 644 set thread context of 1268	644	mstsc.exe	Explorer.EXE

Suspicious behavior: EnumeratesProcesses 19 IoCs

Processes:

new po775.exemstsc.exe

pid	process
268	new po775.exe
268	new po775.exe
644	mstsc.exe
644	mstsc.exe
644	mstsc.exe
644	mstsc.exe
644	mstsc.exe
644	mstsc.exe
644	mstsc.exe
644	mstsc.exe
644	mstsc.exe
644	mstsc.exe
644	mstsc.exe
644	mstsc.exe
644	mstsc.exe
644	mstsc.exe
644	mstsc.exe
644	mstsc.exe
644	mstsc.exe

Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

new po775.exemstsc.exe

pid process

268 new po775.exe
268 new po775.exe
268 new po775.exe
644 mstsc.exe
644 mstsc.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

new po775.exemstsc.exe

description pid process

Token: SeDebugPrivilege 268 new po775.exe
Token: SeDebugPrivilege 644 mstsc.exe
Suspicious use of FindShellTrayWindow 4 IoCs

Processes:

Explorer.EXE

pid process

1268 Explorer.EXE
1268 Explorer.EXE
1268 Explorer.EXE
1268 Explorer.EXE
Suspicious use of SendNotifyMessage 4 IoCs

Processes:

Explorer.EXE

pid process

1268 Explorer.EXE
1268 Explorer.EXE
1268 Explorer.EXE
1268 Explorer.EXE

description	pid	process
Token: SeDebugPrivilege	268	new po775.exe
Token: SeDebugPrivilege	644	mstsc.exe

pid	process
1268	Explorer.EXE
1268	Explorer.EXE
1268	Explorer.EXE
1268	Explorer.EXE

pid	process
1268	Explorer.EXE
1268	Explorer.EXE
1268	Explorer.EXE
1268	Explorer.EXE

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

new po775.exeExplorer.EXEmstsc.exe

description	pid	process	target process
PID 1732 wrote to memory of 268	1732	new po775.exe	new po775.exe
PID 1732 wrote to memory of 268	1732	new po775.exe	new po775.exe
PID 1732 wrote to memory of 268	1732	new po775.exe	new po775.exe
PID 1732 wrote to memory of 268	1732	new po775.exe	new po775.exe
PID 1732 wrote to memory of 268	1732	new po775.exe	new po775.exe
PID 1732 wrote to memory of 268	1732	new po775.exe	new po775.exe
PID 1732 wrote to memory of 268	1732	new po775.exe	new po775.exe
PID 1268 wrote to memory of 644	1268	Explorer.EXE	mstsc.exe
PID 1268 wrote to memory of 644	1268	Explorer.EXE	mstsc.exe
PID 1268 wrote to memory of 644	1268	Explorer.EXE	mstsc.exe
PID 1268 wrote to memory of 644	1268	Explorer.EXE	mstsc.exe
PID 644 wrote to memory of 1348	644	mstsc.exe	cmd.exe
PID 644 wrote to memory of 1348	644	mstsc.exe	cmd.exe
PID 644 wrote to memory of 1348	644	mstsc.exe	cmd.exe
PID 644 wrote to memory of 1348	644	mstsc.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:1268

C:\Users\Admin\AppData\Local\Temp\new po775.exe
"C:\Users\Admin\AppData\Local\Temp\new po775.exe"
2⤵
- Checks BIOS information in registry
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1732

C:\Users\Admin\AppData\Local\Temp\new po775.exe
"C:\Users\Admin\AppData\Local\Temp\new po775.exe"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:268

C:\Windows\SysWOW64\mstsc.exe
"C:\Windows\SysWOW64\mstsc.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:644

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\new po775.exe"
3⤵
- Deletes itself
PID:1348

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

2

T1497

Credential Access

Discovery

Query Registry

4

T1012

Virtualization/Sandbox Evasion

2

T1497

System Information Discovery

2

T1082

Peripheral Device Discovery

1

T1120

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

memory/268-6-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/268-7-0x000000000041ECD0-mapping.dmp

Download
memory/644-8-0x0000000000000000-mapping.dmp

Download
memory/644-9-0x0000000000CB0000-0x0000000000DB4000-memory.dmp

Filesize
1.0MB

Download
memory/644-11-0x0000000000B00000-0x0000000000BB8000-memory.dmp

Filesize
736KB

Download
memory/1348-10-0x0000000000000000-mapping.dmp

Download
memory/1732-0-0x00000000748A0000-0x0000000074F8E000-memory.dmp

Filesize
6.9MB

Download
memory/1732-1-0x00000000011F0000-0x00000000011F1000-memory.dmp

Filesize
4KB

Download
memory/1732-3-0x00000000004C0000-0x00000000004D3000-memory.dmp

Filesize
76KB

Download
memory/1732-4-0x0000000004F60000-0x0000000004FC5000-memory.dmp

Filesize
404KB

Download
memory/1732-5-0x0000000000610000-0x0000000000640000-memory.dmp

Filesize
192KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads