formbook | ad86b6dd3faef43b4ef56786e35a7d2b38a369e6082c72c3cac0267a5b8efc5a

General

Target

PI ZB_2021_P070 R3.exe
Size

229KB
MD5

8c34da075c440fe80be7af580725b0e8
SHA1

5b7903ed7fcfef0189621390336efe359a39e908
SHA256

ad86b6dd3faef43b4ef56786e35a7d2b38a369e6082c72c3cac0267a5b8efc5a
SHA512

7d7504d10dba181aaab5d1fc7384719a05e16ed54c669b00a9c24ddb2e19e9b622e7bcc475dd2b6891d86d2e3e5a90fa70794075c7b65845a85946bff3773b57

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/876-64-0x0000000000400000-0x000000000042E000-memory.dmp	formbook
behavioral1/memory/1732-71-0x00000000000C0000-0x00000000000EE000-memory.dmp	formbook

Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

1684 cmd.exe
Loads dropped DLL 1 IoCs

Processes:

PI ZB_2021_P070 R3.exe

pid process

1640 PI ZB_2021_P070 R3.exe

pid	process
1684	cmd.exe

pid	process
1640	PI ZB_2021_P070 R3.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

PI ZB_2021_P070 R3.exePI ZB_2021_P070 R3.exeNETSTAT.EXE

description	pid	process	target process
PID 1640 set thread context of 876	1640	PI ZB_2021_P070 R3.exe	PI ZB_2021_P070 R3.exe
PID 876 set thread context of 1220	876	PI ZB_2021_P070 R3.exe	Explorer.EXE
PID 1732 set thread context of 1220	1732	NETSTAT.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
Gathers network information 2 TTPs 1 IoCs
Uses commandline utility to view network configuration.

System Information Discovery
T1082

Command-Line Interface
T1059

Processes:

NETSTAT.EXE

pid process

1732 NETSTAT.EXE

pid	process
1732	NETSTAT.EXE

Suspicious behavior: EnumeratesProcesses 31 IoCs

Processes:

PI ZB_2021_P070 R3.exeNETSTAT.EXE

pid	process
876	PI ZB_2021_P070 R3.exe
876	PI ZB_2021_P070 R3.exe
1732	NETSTAT.EXE
1732	NETSTAT.EXE
1732	NETSTAT.EXE
1732	NETSTAT.EXE
1732	NETSTAT.EXE
1732	NETSTAT.EXE
1732	NETSTAT.EXE
1732	NETSTAT.EXE
1732	NETSTAT.EXE
1732	NETSTAT.EXE
1732	NETSTAT.EXE
1732	NETSTAT.EXE
1732	NETSTAT.EXE
1732	NETSTAT.EXE
1732	NETSTAT.EXE
1732	NETSTAT.EXE
1732	NETSTAT.EXE
1732	NETSTAT.EXE
1732	NETSTAT.EXE
1732	NETSTAT.EXE
1732	NETSTAT.EXE
1732	NETSTAT.EXE
1732	NETSTAT.EXE
1732	NETSTAT.EXE
1732	NETSTAT.EXE
1732	NETSTAT.EXE
1732	NETSTAT.EXE
1732	NETSTAT.EXE
1732	NETSTAT.EXE

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

1220 Explorer.EXE
Suspicious behavior: MapViewOfSection 6 IoCs

Processes:

PI ZB_2021_P070 R3.exePI ZB_2021_P070 R3.exeNETSTAT.EXE

pid process

1640 PI ZB_2021_P070 R3.exe
876 PI ZB_2021_P070 R3.exe
876 PI ZB_2021_P070 R3.exe
876 PI ZB_2021_P070 R3.exe
1732 NETSTAT.EXE
1732 NETSTAT.EXE
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

PI ZB_2021_P070 R3.exeNETSTAT.EXE

description pid process

Token: SeDebugPrivilege 876 PI ZB_2021_P070 R3.exe
Token: SeDebugPrivilege 1732 NETSTAT.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

pid	process
1220	Explorer.EXE

pid	process
1640	PI ZB_2021_P070 R3.exe
876	PI ZB_2021_P070 R3.exe
876	PI ZB_2021_P070 R3.exe
876	PI ZB_2021_P070 R3.exe
1732	NETSTAT.EXE
1732	NETSTAT.EXE

description	pid	process
Token: SeDebugPrivilege	876	PI ZB_2021_P070 R3.exe
Token: SeDebugPrivilege	1732	NETSTAT.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:

PI ZB_2021_P070 R3.exeExplorer.EXENETSTAT.EXE

description	pid	process	target process
PID 1640 wrote to memory of 876	1640	PI ZB_2021_P070 R3.exe	PI ZB_2021_P070 R3.exe
PID 1640 wrote to memory of 876	1640	PI ZB_2021_P070 R3.exe	PI ZB_2021_P070 R3.exe
PID 1640 wrote to memory of 876	1640	PI ZB_2021_P070 R3.exe	PI ZB_2021_P070 R3.exe
PID 1640 wrote to memory of 876	1640	PI ZB_2021_P070 R3.exe	PI ZB_2021_P070 R3.exe
PID 1640 wrote to memory of 876	1640	PI ZB_2021_P070 R3.exe	PI ZB_2021_P070 R3.exe
PID 1220 wrote to memory of 1732	1220	Explorer.EXE	NETSTAT.EXE
PID 1220 wrote to memory of 1732	1220	Explorer.EXE	NETSTAT.EXE
PID 1220 wrote to memory of 1732	1220	Explorer.EXE	NETSTAT.EXE
PID 1220 wrote to memory of 1732	1220	Explorer.EXE	NETSTAT.EXE
PID 1732 wrote to memory of 1684	1732	NETSTAT.EXE	cmd.exe
PID 1732 wrote to memory of 1684	1732	NETSTAT.EXE	cmd.exe
PID 1732 wrote to memory of 1684	1732	NETSTAT.EXE	cmd.exe
PID 1732 wrote to memory of 1684	1732	NETSTAT.EXE	cmd.exe

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

C:\Users\Admin\AppData\Local\Temp\PI ZB_2021_P070 R3.exe
"C:\Users\Admin\AppData\Local\Temp\PI ZB_2021_P070 R3.exe"
2⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:1640

C:\Users\Admin\AppData\Local\Temp\PI ZB_2021_P070 R3.exe
"C:\Users\Admin\AppData\Local\Temp\PI ZB_2021_P070 R3.exe"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:876

C:\Windows\SysWOW64\NETSTAT.EXE
"C:\Windows\SysWOW64\NETSTAT.EXE"
2⤵
- Suspicious use of SetThreadContext
- Gathers network information
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1732

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\PI ZB_2021_P070 R3.exe"
3⤵
- Deletes itself
PID:1684

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Command-Line Interface

1

T1059

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

\Users\Admin\AppData\Local\Temp\nsn1AD3.tmp\c9henai.dll
MD5
6582e8fabdbec6c7696f94ff33dc6b6d

SHA1
d6986e668b28edc49066013f1de9e1382d1a907d

SHA256
25c43d3110644eb9a1712174ddf4f4851fcb7b1db8faa828baecaf3a2c75cd08

SHA512
48a91f22e829a5f14db76426147f82324c8345137ddf02ba8564dccb29069ca7b928affcaa39f49d3653fd7437d1b3b34a302eb548de602ca633992797493210

Download Submit
memory/876-62-0x000000000041EAF0-mapping.dmp

Download
memory/876-64-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/876-66-0x00000000003E0000-0x00000000003F4000-memory.dmp

Filesize
80KB

Download
memory/876-65-0x0000000000770000-0x0000000000A73000-memory.dmp

Filesize
3.0MB

Download
memory/1220-67-0x0000000004B10000-0x0000000004C6F000-memory.dmp

Filesize
1.4MB

Download
memory/1220-74-0x0000000003C80000-0x0000000003D29000-memory.dmp

Filesize
676KB

Download
memory/1640-63-0x00000000003E0000-0x00000000003E2000-memory.dmp

Filesize
8KB

Download
memory/1640-60-0x0000000075631000-0x0000000075633000-memory.dmp

Filesize
8KB

Download
memory/1684-69-0x0000000000000000-mapping.dmp

Download
memory/1732-68-0x0000000000000000-mapping.dmp

Download
memory/1732-70-0x00000000009E0000-0x00000000009E9000-memory.dmp

Filesize
36KB

Download
memory/1732-72-0x0000000002170000-0x0000000002473000-memory.dmp

Filesize
3.0MB

Download
memory/1732-71-0x00000000000C0000-0x00000000000EE000-memory.dmp

Filesize
184KB

Download
memory/1732-73-0x0000000001DF0000-0x0000000001E83000-memory.dmp

Filesize
588KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads