formbook | 2a728511ab345b4207ea5959439df12205796548388cc170b427110f9cc247dd

General

Target

SHIPPING DOCUMENT.exe
Size

229KB
MD5

2a7d9a26f63de29bbf21016b055560b1
SHA1

8110d53cc373121512c1fb90c4ce12fedc07803a
SHA256

2a728511ab345b4207ea5959439df12205796548388cc170b427110f9cc247dd
SHA512

4bb88aaa2c8f9d8d3ecbc53910b20c1eb121222f31503792196cac567f640125e75e92c99147732d24db24ae7d81f01a0fca7c1ba3627a1565c9702e89303cc3

Score

10^/10

formbook rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

C2

http://www.knighttechinca.com/dxe/

Decoy

sardarfarm.com

959tremont.com

privat-livecam.net

ansel-homebakery.com

joysupermarket.com

peninsulamatchmakers.net

northsytyle.com

radioconexaoubermusic.com

relocatingrealtor.com

desyrnan.com

onlinehoortoestel.online

enpointe.online

rvvikings.com

paulpoirier.com

shitarpa.net

kerneis.net

rokitreach.com

essentiallygaia.com

prestiged.net

fuerzaagavera.com

Signatures

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

Formbook Payload 2 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/1992-63-0x0000000000400000-0x000000000042E000-memory.dmp	formbook
behavioral1/memory/268-72-0x0000000000080000-0x00000000000AE000-memory.dmp	formbook

Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

1028 cmd.exe
Loads dropped DLL 1 IoCs

Processes:

SHIPPING DOCUMENT.exe

pid process

1652 SHIPPING DOCUMENT.exe

pid	process
1028	cmd.exe

Suspicious use of SetThreadContext 4 IoCs

Processes:

SHIPPING DOCUMENT.exeSHIPPING DOCUMENT.exechkdsk.exe

description	pid	process	target process
PID 1652 set thread context of 1992	1652	SHIPPING DOCUMENT.exe	SHIPPING DOCUMENT.exe
PID 1992 set thread context of 1220	1992	SHIPPING DOCUMENT.exe	Explorer.EXE
PID 1992 set thread context of 1220	1992	SHIPPING DOCUMENT.exe	Explorer.EXE
PID 268 set thread context of 1220	268	chkdsk.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
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:

SHIPPING DOCUMENT.exechkdsk.exe

pid	process
1992	SHIPPING DOCUMENT.exe
1992	SHIPPING DOCUMENT.exe
1992	SHIPPING DOCUMENT.exe
268	chkdsk.exe
268	chkdsk.exe
268	chkdsk.exe
268	chkdsk.exe
268	chkdsk.exe
268	chkdsk.exe
268	chkdsk.exe
268	chkdsk.exe
268	chkdsk.exe
268	chkdsk.exe
268	chkdsk.exe
268	chkdsk.exe
268	chkdsk.exe
268	chkdsk.exe
268	chkdsk.exe
268	chkdsk.exe
268	chkdsk.exe
268	chkdsk.exe
268	chkdsk.exe
268	chkdsk.exe
268	chkdsk.exe
268	chkdsk.exe
268	chkdsk.exe
268	chkdsk.exe
268	chkdsk.exe
268	chkdsk.exe
268	chkdsk.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

1220 Explorer.EXE

pid	process
1220	Explorer.EXE

Suspicious behavior: MapViewOfSection 7 IoCs

Processes:

SHIPPING DOCUMENT.exeSHIPPING DOCUMENT.exechkdsk.exe

pid	process
1652	SHIPPING DOCUMENT.exe
1992	SHIPPING DOCUMENT.exe
1992	SHIPPING DOCUMENT.exe
1992	SHIPPING DOCUMENT.exe
1992	SHIPPING DOCUMENT.exe
268	chkdsk.exe
268	chkdsk.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

SHIPPING DOCUMENT.exechkdsk.exe

description pid process

Token: SeDebugPrivilege 1992 SHIPPING DOCUMENT.exe
Token: SeDebugPrivilege 268 chkdsk.exe
Suspicious use of FindShellTrayWindow 4 IoCs

Processes:

Explorer.EXE

pid process

1220 Explorer.EXE
1220 Explorer.EXE
1220 Explorer.EXE
1220 Explorer.EXE
Suspicious use of SendNotifyMessage 4 IoCs

Processes:

Explorer.EXE

pid process

1220 Explorer.EXE
1220 Explorer.EXE
1220 Explorer.EXE
1220 Explorer.EXE

description	pid	process
Token: SeDebugPrivilege	1992	SHIPPING DOCUMENT.exe
Token: SeDebugPrivilege	268	chkdsk.exe

pid	process
1220	Explorer.EXE
1220	Explorer.EXE
1220	Explorer.EXE
1220	Explorer.EXE

pid	process
1220	Explorer.EXE
1220	Explorer.EXE
1220	Explorer.EXE
1220	Explorer.EXE

Suspicious use of WriteProcessMemory 13 IoCs

Processes:

SHIPPING DOCUMENT.exeSHIPPING DOCUMENT.exechkdsk.exe

description	pid	process	target process
PID 1652 wrote to memory of 1992	1652	SHIPPING DOCUMENT.exe	SHIPPING DOCUMENT.exe
PID 1652 wrote to memory of 1992	1652	SHIPPING DOCUMENT.exe	SHIPPING DOCUMENT.exe
PID 1652 wrote to memory of 1992	1652	SHIPPING DOCUMENT.exe	SHIPPING DOCUMENT.exe
PID 1652 wrote to memory of 1992	1652	SHIPPING DOCUMENT.exe	SHIPPING DOCUMENT.exe
PID 1652 wrote to memory of 1992	1652	SHIPPING DOCUMENT.exe	SHIPPING DOCUMENT.exe
PID 1992 wrote to memory of 268	1992	SHIPPING DOCUMENT.exe	chkdsk.exe
PID 1992 wrote to memory of 268	1992	SHIPPING DOCUMENT.exe	chkdsk.exe
PID 1992 wrote to memory of 268	1992	SHIPPING DOCUMENT.exe	chkdsk.exe
PID 1992 wrote to memory of 268	1992	SHIPPING DOCUMENT.exe	chkdsk.exe
PID 268 wrote to memory of 1028	268	chkdsk.exe	cmd.exe
PID 268 wrote to memory of 1028	268	chkdsk.exe	cmd.exe
PID 268 wrote to memory of 1028	268	chkdsk.exe	cmd.exe
PID 268 wrote to memory of 1028	268	chkdsk.exe	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:1220

C:\Users\Admin\AppData\Local\Temp\SHIPPING DOCUMENT.exe
"C:\Users\Admin\AppData\Local\Temp\SHIPPING DOCUMENT.exe"
2⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:1652

C:\Users\Admin\AppData\Local\Temp\SHIPPING DOCUMENT.exe
"C:\Users\Admin\AppData\Local\Temp\SHIPPING DOCUMENT.exe"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1992

C:\Windows\SysWOW64\chkdsk.exe
"C:\Windows\SysWOW64\chkdsk.exe"
4⤵
- Suspicious use of SetThreadContext
- Enumerates system info in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:268

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\SHIPPING DOCUMENT.exe"
5⤵
- Deletes itself
PID:1028

Network

MITRE ATT&CK Matrix ATT&CK v6

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

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Downloads

\Users\Admin\AppData\Local\Temp\nsn6CC9.tmp\yg69z2kr0.dll
MD5
cf41dfdbe7d97c55ed8f185286d3c113

SHA1
4113c1310169af016c663b562bc6a65c60a9618a

SHA256
7f2094ea72a8f87da7b2291f0093567b6ba766442f024b5be3f81ade371e7c22

SHA512
2c034c004deb528d8c417781e5f786cf45ff66651662a524b37dab11a6b7616cfc3009daa1e8749d6c0255fed3f89d63956ff441653293467a68758803f1dd3f

Download Submit
memory/268-71-0x0000000000100000-0x0000000000107000-memory.dmp

Filesize
28KB

Download
memory/268-74-0x00000000003F0000-0x0000000000483000-memory.dmp

Filesize
588KB

Download
memory/268-73-0x00000000020A0000-0x00000000023A3000-memory.dmp

Filesize
3.0MB

Download
memory/268-72-0x0000000000080000-0x00000000000AE000-memory.dmp

Filesize
184KB

Download
memory/268-69-0x0000000000000000-mapping.dmp

Download
memory/1028-70-0x0000000000000000-mapping.dmp

Download
memory/1220-75-0x0000000007500000-0x0000000007611000-memory.dmp

Filesize
1.1MB

Download
memory/1220-66-0x0000000004A20000-0x0000000004B21000-memory.dmp

Filesize
1.0MB

Download
memory/1220-68-0x0000000006F60000-0x00000000070F9000-memory.dmp

Filesize
1.6MB

Download
memory/1652-61-0x0000000001DB0000-0x0000000001DB2000-memory.dmp

Filesize
8KB

Download
memory/1652-59-0x00000000754F1000-0x00000000754F3000-memory.dmp

Filesize
8KB

Download
memory/1992-64-0x0000000000970000-0x0000000000C73000-memory.dmp

Filesize
3.0MB

Download
memory/1992-67-0x0000000000310000-0x0000000000324000-memory.dmp

Filesize
80KB

Download
memory/1992-63-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/1992-65-0x00000000002C0000-0x00000000002D4000-memory.dmp

Filesize
80KB

Download
memory/1992-62-0x000000000041EAF0-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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