formbook | e1fd783c3c5c3a686b2ae04b64ecce2b3c5e00d2bed04cdbf8f420a57d82208e

General

Target

e1fd783c3c5c3a686b2ae04b64ecce2b3c5e00d2bed04cdbf8f420a57d82208e.exe
Size

649KB
MD5

70f1ab254a32c6050743605d6f3384d5
SHA1

526c5e0280cb55ef308312db603e94af4fee0b42
SHA256

e1fd783c3c5c3a686b2ae04b64ecce2b3c5e00d2bed04cdbf8f420a57d82208e
SHA512

120d687da81b7fede4954e181bba535b279e81542ed779af0f41f6fda58596b25d1162a950e2633b45d6c9f0034ba91606873a87dc9530aa5fad1d5c2a5bbe8c
SSDEEP

12288:3f7mvgKnFHMF9XuroT07oUdMIEoKrom2Az3HCqC48wypy/LfcfhtYiQGMXJEGYc:zmvL9MDXurIMMIEHvzrC489ybcfvxQGs

Score

10^/10

formbook fs83 rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

fs83

Decoy

blastol.space

tomwalkerisfalco.com

us-sumatrraslimbellytonic.com

drywallandpaintingservice.com

vntapp.net

passportpages.site

at-mim.com

yeondagoods.com

teomanyildirim.com

paygame.site

senze.art

alhandco.com

9831bsej.xyz

traumatic.xyz

sos-soutien.com

thetechnolgy.live

washing-machine-46612.bond

marvsneakers.com

shequbaike.net

xc4f35fg4h35fg4h53.top

Signatures

Formbook
Formbook is a data stealing malware which is capable of stealing data.
trojan spyware stealer formbook

Formbook payload 4 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/3052-14-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/3052-21-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2760-32-0x0000000000080000-0x00000000000AF000-memory.dmp	formbook
behavioral1/memory/2760-34-0x0000000000080000-0x00000000000AF000-memory.dmp	formbook

Suspicious use of SetThreadContext 3 IoCs

Processes:

e1fd783c3c5c3a686b2ae04b64ecce2b3c5e00d2bed04cdbf8f420a57d82208e.exeRegSvcs.exechkdsk.exe

description	pid	process	target process
PID 2948 set thread context of 3052	2948	e1fd783c3c5c3a686b2ae04b64ecce2b3c5e00d2bed04cdbf8f420a57d82208e.exe	RegSvcs.exe
PID 3052 set thread context of 1204	3052	RegSvcs.exe	Explorer.EXE
PID 2760 set thread context of 1204	2760	chkdsk.exe	Explorer.EXE

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

System Information Discovery
T1082
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 30 IoCs

Processes:

RegSvcs.exepowershell.exechkdsk.exe

pid	process
3052	RegSvcs.exe
3052	RegSvcs.exe
2832	powershell.exe
2760	chkdsk.exe
2760	chkdsk.exe
2760	chkdsk.exe
2760	chkdsk.exe
2760	chkdsk.exe
2760	chkdsk.exe
2760	chkdsk.exe
2760	chkdsk.exe
2760	chkdsk.exe
2760	chkdsk.exe
2760	chkdsk.exe
2760	chkdsk.exe
2760	chkdsk.exe
2760	chkdsk.exe
2760	chkdsk.exe
2760	chkdsk.exe
2760	chkdsk.exe
2760	chkdsk.exe
2760	chkdsk.exe
2760	chkdsk.exe
2760	chkdsk.exe
2760	chkdsk.exe
2760	chkdsk.exe
2760	chkdsk.exe
2760	chkdsk.exe
2760	chkdsk.exe
2760	chkdsk.exe

Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

RegSvcs.exechkdsk.exe

pid process

3052 RegSvcs.exe
3052 RegSvcs.exe
3052 RegSvcs.exe
2760 chkdsk.exe
2760 chkdsk.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

RegSvcs.exepowershell.exechkdsk.exe

description pid process

Token: SeDebugPrivilege 3052 RegSvcs.exe
Token: SeDebugPrivilege 2832 powershell.exe
Token: SeDebugPrivilege 2760 chkdsk.exe

description	pid	process
Token: SeDebugPrivilege	3052	RegSvcs.exe
Token: SeDebugPrivilege	2832	powershell.exe
Token: SeDebugPrivilege	2760	chkdsk.exe

Suspicious use of WriteProcessMemory 22 IoCs

Processes:

e1fd783c3c5c3a686b2ae04b64ecce2b3c5e00d2bed04cdbf8f420a57d82208e.exeExplorer.EXEchkdsk.exe

description	pid	process	target process
PID 2948 wrote to memory of 2832	2948	e1fd783c3c5c3a686b2ae04b64ecce2b3c5e00d2bed04cdbf8f420a57d82208e.exe	powershell.exe
PID 2948 wrote to memory of 2832	2948	e1fd783c3c5c3a686b2ae04b64ecce2b3c5e00d2bed04cdbf8f420a57d82208e.exe	powershell.exe
PID 2948 wrote to memory of 2832	2948	e1fd783c3c5c3a686b2ae04b64ecce2b3c5e00d2bed04cdbf8f420a57d82208e.exe	powershell.exe
PID 2948 wrote to memory of 2832	2948	e1fd783c3c5c3a686b2ae04b64ecce2b3c5e00d2bed04cdbf8f420a57d82208e.exe	powershell.exe
PID 2948 wrote to memory of 3052	2948	e1fd783c3c5c3a686b2ae04b64ecce2b3c5e00d2bed04cdbf8f420a57d82208e.exe	RegSvcs.exe
PID 2948 wrote to memory of 3052	2948	e1fd783c3c5c3a686b2ae04b64ecce2b3c5e00d2bed04cdbf8f420a57d82208e.exe	RegSvcs.exe
PID 2948 wrote to memory of 3052	2948	e1fd783c3c5c3a686b2ae04b64ecce2b3c5e00d2bed04cdbf8f420a57d82208e.exe	RegSvcs.exe
PID 2948 wrote to memory of 3052	2948	e1fd783c3c5c3a686b2ae04b64ecce2b3c5e00d2bed04cdbf8f420a57d82208e.exe	RegSvcs.exe
PID 2948 wrote to memory of 3052	2948	e1fd783c3c5c3a686b2ae04b64ecce2b3c5e00d2bed04cdbf8f420a57d82208e.exe	RegSvcs.exe
PID 2948 wrote to memory of 3052	2948	e1fd783c3c5c3a686b2ae04b64ecce2b3c5e00d2bed04cdbf8f420a57d82208e.exe	RegSvcs.exe
PID 2948 wrote to memory of 3052	2948	e1fd783c3c5c3a686b2ae04b64ecce2b3c5e00d2bed04cdbf8f420a57d82208e.exe	RegSvcs.exe
PID 2948 wrote to memory of 3052	2948	e1fd783c3c5c3a686b2ae04b64ecce2b3c5e00d2bed04cdbf8f420a57d82208e.exe	RegSvcs.exe
PID 2948 wrote to memory of 3052	2948	e1fd783c3c5c3a686b2ae04b64ecce2b3c5e00d2bed04cdbf8f420a57d82208e.exe	RegSvcs.exe
PID 2948 wrote to memory of 3052	2948	e1fd783c3c5c3a686b2ae04b64ecce2b3c5e00d2bed04cdbf8f420a57d82208e.exe	RegSvcs.exe
PID 1204 wrote to memory of 2760	1204	Explorer.EXE	chkdsk.exe
PID 1204 wrote to memory of 2760	1204	Explorer.EXE	chkdsk.exe
PID 1204 wrote to memory of 2760	1204	Explorer.EXE	chkdsk.exe
PID 1204 wrote to memory of 2760	1204	Explorer.EXE	chkdsk.exe
PID 2760 wrote to memory of 2500	2760	chkdsk.exe	cmd.exe
PID 2760 wrote to memory of 2500	2760	chkdsk.exe	cmd.exe
PID 2760 wrote to memory of 2500	2760	chkdsk.exe	cmd.exe
PID 2760 wrote to memory of 2500	2760	chkdsk.exe	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1204

C:\Users\Admin\AppData\Local\Temp\e1fd783c3c5c3a686b2ae04b64ecce2b3c5e00d2bed04cdbf8f420a57d82208e.exe
"C:\Users\Admin\AppData\Local\Temp\e1fd783c3c5c3a686b2ae04b64ecce2b3c5e00d2bed04cdbf8f420a57d82208e.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2948

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\e1fd783c3c5c3a686b2ae04b64ecce2b3c5e00d2bed04cdbf8f420a57d82208e.exe"
3⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2832

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:3052

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:2760

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
3⤵
PID:2500

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

2

T1082

Query Registry

1

T1012

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

memory/1204-20-0x0000000003C10000-0x0000000003D10000-memory.dmp

Filesize
1024KB

Download
memory/1204-26-0x0000000004FC0000-0x00000000050AC000-memory.dmp

Filesize
944KB

Download
memory/2760-36-0x00000000005A0000-0x0000000000633000-memory.dmp

Filesize
588KB

Download
memory/2760-34-0x0000000000080000-0x00000000000AF000-memory.dmp

Filesize
188KB

Download
memory/2760-33-0x00000000024D0000-0x00000000027D3000-memory.dmp

Filesize
3.0MB

Download
memory/2760-32-0x0000000000080000-0x00000000000AF000-memory.dmp

Filesize
188KB

Download
memory/2760-31-0x00000000003C0000-0x00000000003C7000-memory.dmp

Filesize
28KB

Download
memory/2760-30-0x00000000003C0000-0x00000000003C7000-memory.dmp

Filesize
28KB

Download
memory/2832-27-0x0000000002AC0000-0x0000000002B00000-memory.dmp

Filesize
256KB

Download
memory/2832-23-0x000000006EE80000-0x000000006F42B000-memory.dmp

Filesize
5.7MB

Download
memory/2832-29-0x000000006EE80000-0x000000006F42B000-memory.dmp

Filesize
5.7MB

Download
memory/2832-28-0x0000000002AC0000-0x0000000002B00000-memory.dmp

Filesize
256KB

Download
memory/2832-25-0x000000006EE80000-0x000000006F42B000-memory.dmp

Filesize
5.7MB

Download
memory/2832-24-0x0000000002AC0000-0x0000000002B00000-memory.dmp

Filesize
256KB

Download
memory/2948-6-0x00000000005C0000-0x00000000005D4000-memory.dmp

Filesize
80KB

Download
memory/2948-5-0x0000000000560000-0x000000000056E000-memory.dmp

Filesize
56KB

Download
memory/2948-1-0x0000000073F30000-0x000000007461E000-memory.dmp

Filesize
6.9MB

Download
memory/2948-2-0x0000000004AD0000-0x0000000004B10000-memory.dmp

Filesize
256KB

Download
memory/2948-3-0x0000000004A20000-0x0000000004AB0000-memory.dmp

Filesize
576KB

Download
memory/2948-15-0x0000000073F30000-0x000000007461E000-memory.dmp

Filesize
6.9MB

Download
memory/2948-7-0x000000000A250000-0x000000000A2C6000-memory.dmp

Filesize
472KB

Download
memory/2948-0-0x0000000000EC0000-0x0000000000F68000-memory.dmp

Filesize
672KB

Download
memory/2948-4-0x0000000000540000-0x0000000000558000-memory.dmp

Filesize
96KB

Download
memory/3052-16-0x0000000000920000-0x0000000000C23000-memory.dmp

Filesize
3.0MB

Download
memory/3052-10-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/3052-12-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/3052-14-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/3052-21-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/3052-8-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/3052-22-0x0000000000190000-0x00000000001A4000-memory.dmp

Filesize
80KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads