formbook | 009d9a0f6fafa91b750271413fef5771a4ce5855a59c0e6c16c85eb7de08e52b

General

Target

purchase order.exe
Size

887KB
MD5

975187a07455d3cbf38ec878d893b490
SHA1

af8ddbf775cdb9dbd3776f717c192094202127be
SHA256

009d9a0f6fafa91b750271413fef5771a4ce5855a59c0e6c16c85eb7de08e52b
SHA512

378768e3aa1a49e6dce7a83197c1eceb86111422a6886fbe9e3ba7df75ce2bdb0f0979620a8eb905153caf276b43a23dd19885ff487586b3069a515cceb15222

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/1120-6-0x0000000000400000-0x000000000042E000-memory.dmp	formbook
behavioral1/memory/1120-7-0x000000000041ECD0-mapping.dmp	formbook
behavioral1/memory/1104-8-0x0000000000000000-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:

purchase order.exe

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

Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

368 cmd.exe

pid	process
368	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:

purchase order.exe

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

Suspicious use of SetThreadContext 4 IoCs

Processes:

purchase order.exepurchase order.exemstsc.exe

description	pid	process	target process
PID 1644 set thread context of 1120	1644	purchase order.exe	purchase order.exe
PID 1120 set thread context of 1272	1120	purchase order.exe	Explorer.EXE
PID 1120 set thread context of 1272	1120	purchase order.exe	Explorer.EXE
PID 1104 set thread context of 1272	1104	mstsc.exe	Explorer.EXE

Suspicious behavior: EnumeratesProcesses 21 IoCs

Processes:

purchase order.exepurchase order.exemstsc.exe

pid	process
1644	purchase order.exe
1644	purchase order.exe
1120	purchase order.exe
1120	purchase order.exe
1120	purchase order.exe
1104	mstsc.exe
1104	mstsc.exe
1104	mstsc.exe
1104	mstsc.exe
1104	mstsc.exe
1104	mstsc.exe
1104	mstsc.exe
1104	mstsc.exe
1104	mstsc.exe
1104	mstsc.exe
1104	mstsc.exe
1104	mstsc.exe
1104	mstsc.exe
1104	mstsc.exe
1104	mstsc.exe
1104	mstsc.exe

Suspicious behavior: MapViewOfSection 6 IoCs

Processes:

purchase order.exemstsc.exe

pid process

1120 purchase order.exe
1120 purchase order.exe
1120 purchase order.exe
1120 purchase order.exe
1104 mstsc.exe
1104 mstsc.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

purchase order.exepurchase order.exemstsc.exe

description pid process

Token: SeDebugPrivilege 1644 purchase order.exe
Token: SeDebugPrivilege 1120 purchase order.exe
Token: SeDebugPrivilege 1104 mstsc.exe
Suspicious use of FindShellTrayWindow 4 IoCs

Processes:

Explorer.EXE

pid process

1272 Explorer.EXE
1272 Explorer.EXE
1272 Explorer.EXE
1272 Explorer.EXE
Suspicious use of SendNotifyMessage 4 IoCs

Processes:

Explorer.EXE

pid process

1272 Explorer.EXE
1272 Explorer.EXE
1272 Explorer.EXE
1272 Explorer.EXE

pid	process
1120	purchase order.exe
1120	purchase order.exe
1120	purchase order.exe
1120	purchase order.exe
1104	mstsc.exe
1104	mstsc.exe

description	pid	process
Token: SeDebugPrivilege	1644	purchase order.exe
Token: SeDebugPrivilege	1120	purchase order.exe
Token: SeDebugPrivilege	1104	mstsc.exe

pid	process
1272	Explorer.EXE
1272	Explorer.EXE
1272	Explorer.EXE
1272	Explorer.EXE

pid	process
1272	Explorer.EXE
1272	Explorer.EXE
1272	Explorer.EXE
1272	Explorer.EXE

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

purchase order.exeExplorer.EXEmstsc.exe

description	pid	process	target process
PID 1644 wrote to memory of 1120	1644	purchase order.exe	purchase order.exe
PID 1644 wrote to memory of 1120	1644	purchase order.exe	purchase order.exe
PID 1644 wrote to memory of 1120	1644	purchase order.exe	purchase order.exe
PID 1644 wrote to memory of 1120	1644	purchase order.exe	purchase order.exe
PID 1644 wrote to memory of 1120	1644	purchase order.exe	purchase order.exe
PID 1644 wrote to memory of 1120	1644	purchase order.exe	purchase order.exe
PID 1644 wrote to memory of 1120	1644	purchase order.exe	purchase order.exe
PID 1272 wrote to memory of 1104	1272	Explorer.EXE	mstsc.exe
PID 1272 wrote to memory of 1104	1272	Explorer.EXE	mstsc.exe
PID 1272 wrote to memory of 1104	1272	Explorer.EXE	mstsc.exe
PID 1272 wrote to memory of 1104	1272	Explorer.EXE	mstsc.exe
PID 1104 wrote to memory of 368	1104	mstsc.exe	cmd.exe
PID 1104 wrote to memory of 368	1104	mstsc.exe	cmd.exe
PID 1104 wrote to memory of 368	1104	mstsc.exe	cmd.exe
PID 1104 wrote to memory of 368	1104	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:1272

C:\Users\Admin\AppData\Local\Temp\purchase order.exe
"C:\Users\Admin\AppData\Local\Temp\purchase order.exe"
2⤵
- Checks BIOS information in registry
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1644

C:\Users\Admin\AppData\Local\Temp\purchase order.exe
"C:\Users\Admin\AppData\Local\Temp\purchase order.exe"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:1120

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:1104

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\purchase order.exe"
3⤵
- Deletes itself
PID:368

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/368-10-0x0000000000000000-mapping.dmp

Download
memory/1104-8-0x0000000000000000-mapping.dmp

Download
memory/1104-9-0x0000000000B80000-0x0000000000C84000-memory.dmp

Filesize
1.0MB

Download
memory/1104-11-0x0000000003340000-0x00000000034A7000-memory.dmp

Filesize
1.4MB

Download
memory/1120-6-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/1120-7-0x000000000041ECD0-mapping.dmp

Download
memory/1644-0-0x00000000745C0000-0x0000000074CAE000-memory.dmp

Filesize
6.9MB

Download
memory/1644-1-0x00000000008E0000-0x00000000008E1000-memory.dmp

Filesize
4KB

Download
memory/1644-3-0x00000000003F0000-0x0000000000403000-memory.dmp

Filesize
76KB

Download
memory/1644-4-0x0000000005190000-0x00000000051F5000-memory.dmp

Filesize
404KB

Download
memory/1644-5-0x00000000020A0000-0x00000000020D0000-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