formbook | 8a91c4bf99a674909e6993d52e061547517056d36f9b8e828a9148eb412ffa73

General

Target

Invoice_Payment_Confirmation_INV#240085_pdf.exe
Size

1.1MB
MD5

1b597c240cd23fda73024ed811e4a906
SHA1

f773bdd6e924b65284d8a9ef67f61615a9764a8e
SHA256

8a91c4bf99a674909e6993d52e061547517056d36f9b8e828a9148eb412ffa73
SHA512

d1f00b959befd0c8f91587311d715508c45fb279e661f4ffacb5e3e5f0f19e4151f6baa35ff49fc5d7afe5bb0b09d96346da5d7b0324ee85edb4885ce07f07dc
SSDEEP

24576:Etb20pkaCqT5TBWgNQ7aXe1SQkPXr8mzcLk6A:tVg5tQ7aXe1bkPXAmzcY5

Score

10^/10

formbook f29s discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

f29s

Decoy

rostnixon.net

exxxwordz.xyz

ndradesanches.shop

eneral-vceef.xyz

isanbowl.top

aresrasherregard.cfd

dzas-yeah.xyz

0083.miami

hongziyin01.top

jdhfmq.live

alembottling.net

vtyo-phone.xyz

kaqb-decade.xyz

odel-lsmfz.xyz

aradise.tech

uan123-rtp43.xyz

pusptracking.xyz

uqhi42.xyz

mihy-professor.xyz

mnz-your.xyz

Signatures

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

Formbook payload 3 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/2324-22-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2324-25-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/3012-32-0x0000000000080000-0x00000000000AF000-memory.dmp	formbook

Drops startup file 1 IoCs

Processes:

Dunlop.exe

description ioc process

File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Dunlop.vbs Dunlop.exe
Executes dropped EXE 1 IoCs

Processes:

Dunlop.exe

pid process

2236 Dunlop.exe
Loads dropped DLL 1 IoCs

Processes:

Invoice_Payment_Confirmation_INV#240085_pdf.exe

pid process

2592 Invoice_Payment_Confirmation_INV#240085_pdf.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Dunlop.vbs	Dunlop.exe

pid	process
2236	Dunlop.exe

pid	process
2592	Invoice_Payment_Confirmation_INV#240085_pdf.exe

AutoIT Executable 1 IoCs

AutoIT scripts compiled to PE executables.

Processes:

resource	yara_rule
\Users\Admin\AppData\Local\Thebesian\Dunlop.exe	autoit_exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

Dunlop.exesvchost.exeNAPSTAT.EXE

description	pid	process	target process
PID 2236 set thread context of 2324	2236	Dunlop.exe	svchost.exe
PID 2324 set thread context of 1412	2324	svchost.exe	Explorer.EXE
PID 3012 set thread context of 1412	3012	NAPSTAT.EXE	Explorer.EXE

System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

Processes:

cmd.exeInvoice_Payment_Confirmation_INV#240085_pdf.exeDunlop.exeNAPSTAT.EXE

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Invoice_Payment_Confirmation_INV#240085_pdf.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Dunlop.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	NAPSTAT.EXE

Suspicious behavior: EnumeratesProcesses 30 IoCs

Processes:

svchost.exeNAPSTAT.EXE

pid	process
2324	svchost.exe
2324	svchost.exe
3012	NAPSTAT.EXE
3012	NAPSTAT.EXE
3012	NAPSTAT.EXE
3012	NAPSTAT.EXE
3012	NAPSTAT.EXE
3012	NAPSTAT.EXE
3012	NAPSTAT.EXE
3012	NAPSTAT.EXE
3012	NAPSTAT.EXE
3012	NAPSTAT.EXE
3012	NAPSTAT.EXE
3012	NAPSTAT.EXE
3012	NAPSTAT.EXE
3012	NAPSTAT.EXE
3012	NAPSTAT.EXE
3012	NAPSTAT.EXE
3012	NAPSTAT.EXE
3012	NAPSTAT.EXE
3012	NAPSTAT.EXE
3012	NAPSTAT.EXE
3012	NAPSTAT.EXE
3012	NAPSTAT.EXE
3012	NAPSTAT.EXE
3012	NAPSTAT.EXE
3012	NAPSTAT.EXE
3012	NAPSTAT.EXE
3012	NAPSTAT.EXE
3012	NAPSTAT.EXE

Suspicious behavior: MapViewOfSection 6 IoCs

Processes:

Dunlop.exesvchost.exeNAPSTAT.EXE

pid process

2236 Dunlop.exe
2324 svchost.exe
2324 svchost.exe
2324 svchost.exe
3012 NAPSTAT.EXE
3012 NAPSTAT.EXE
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

svchost.exeNAPSTAT.EXE

description pid process

Token: SeDebugPrivilege 2324 svchost.exe
Token: SeDebugPrivilege 3012 NAPSTAT.EXE

pid	process
2236	Dunlop.exe
2324	svchost.exe
2324	svchost.exe
2324	svchost.exe
3012	NAPSTAT.EXE
3012	NAPSTAT.EXE

description	pid	process
Token: SeDebugPrivilege	2324	svchost.exe
Token: SeDebugPrivilege	3012	NAPSTAT.EXE

Suspicious use of WriteProcessMemory 17 IoCs

Processes:

Invoice_Payment_Confirmation_INV#240085_pdf.exeDunlop.exeExplorer.EXENAPSTAT.EXE

description	pid	process	target process
PID 2592 wrote to memory of 2236	2592	Invoice_Payment_Confirmation_INV#240085_pdf.exe	Dunlop.exe
PID 2592 wrote to memory of 2236	2592	Invoice_Payment_Confirmation_INV#240085_pdf.exe	Dunlop.exe
PID 2592 wrote to memory of 2236	2592	Invoice_Payment_Confirmation_INV#240085_pdf.exe	Dunlop.exe
PID 2592 wrote to memory of 2236	2592	Invoice_Payment_Confirmation_INV#240085_pdf.exe	Dunlop.exe
PID 2236 wrote to memory of 2324	2236	Dunlop.exe	svchost.exe
PID 2236 wrote to memory of 2324	2236	Dunlop.exe	svchost.exe
PID 2236 wrote to memory of 2324	2236	Dunlop.exe	svchost.exe
PID 2236 wrote to memory of 2324	2236	Dunlop.exe	svchost.exe
PID 2236 wrote to memory of 2324	2236	Dunlop.exe	svchost.exe
PID 1412 wrote to memory of 3012	1412	Explorer.EXE	NAPSTAT.EXE
PID 1412 wrote to memory of 3012	1412	Explorer.EXE	NAPSTAT.EXE
PID 1412 wrote to memory of 3012	1412	Explorer.EXE	NAPSTAT.EXE
PID 1412 wrote to memory of 3012	1412	Explorer.EXE	NAPSTAT.EXE
PID 3012 wrote to memory of 2920	3012	NAPSTAT.EXE	cmd.exe
PID 3012 wrote to memory of 2920	3012	NAPSTAT.EXE	cmd.exe
PID 3012 wrote to memory of 2920	3012	NAPSTAT.EXE	cmd.exe
PID 3012 wrote to memory of 2920	3012	NAPSTAT.EXE	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1412
- C:\Users\Admin\AppData\Local\Temp\Invoice_Payment_Confirmation_INV#240085_pdf.exe
  "C:\Users\Admin\AppData\Local\Temp\Invoice_Payment_Confirmation_INV#240085_pdf.exe"
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2592
- - C:\Users\Admin\AppData\Local\Thebesian\Dunlop.exe
    "C:\Users\Admin\AppData\Local\Temp\Invoice_Payment_Confirmation_INV#240085_pdf.exe"
    3⤵
    - Drops startup file
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of WriteProcessMemory
    PID:2236
  - - C:\Windows\SysWOW64\svchost.exe
      "C:\Users\Admin\AppData\Local\Temp\Invoice_Payment_Confirmation_INV#240085_pdf.exe"
      4⤵
      Suspicious use of SetThreadContext
      Suspicious behavior: EnumeratesProcesses
      Suspicious behavior: MapViewOfSection
      Suspicious use of AdjustPrivilegeToken
      PID:2324
- C:\Windows\SysWOW64\NAPSTAT.EXE
  "C:\Windows\SysWOW64\NAPSTAT.EXE"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3012
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Windows\SysWOW64\svchost.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2920

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\nonagglutinant

Filesize
185KB

MD5
c07322e0ebc8ba37ea876cb6dfe5ca1f

SHA1
9e7c8b33c8ee6356e873e426ab661b0f0b968643

SHA256
f5706eb4fd379758330eb6f7a0ae05d4d19ac529b7bb53e153acd635e5fb05a4

SHA512
88538a1164b2221f104cd35ef0dc1e9a521f4adb4f5f5b4b08c6214b3a146ab46ce177e5ab439d3ce505d967b600698cdcad85332ca525a8372e213d23665cb5

Download Submit
\Users\Admin\AppData\Local\Thebesian\Dunlop.exe

Filesize
1.1MB

MD5
1b597c240cd23fda73024ed811e4a906

SHA1
f773bdd6e924b65284d8a9ef67f61615a9764a8e

SHA256
8a91c4bf99a674909e6993d52e061547517056d36f9b8e828a9148eb412ffa73

SHA512
d1f00b959befd0c8f91587311d715508c45fb279e661f4ffacb5e3e5f0f19e4151f6baa35ff49fc5d7afe5bb0b09d96346da5d7b0324ee85edb4885ce07f07dc

Download Submit
memory/1412-28-0x0000000006AB0000-0x0000000006BEE000-memory.dmp

Filesize
1.2MB

Download
memory/1412-33-0x0000000006AB0000-0x0000000006BEE000-memory.dmp

Filesize
1.2MB

Download
memory/2236-20-0x00000000006E0000-0x0000000000AE0000-memory.dmp

Filesize
4.0MB

Download
memory/2324-25-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2324-26-0x0000000000250000-0x0000000000264000-memory.dmp

Filesize
80KB

Download
memory/2324-23-0x0000000000780000-0x0000000000A83000-memory.dmp

Filesize
3.0MB

Download
memory/2324-22-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2592-6-0x00000000007F0000-0x0000000000BF0000-memory.dmp

Filesize
4.0MB

Download
memory/3012-29-0x0000000000E60000-0x0000000000EA6000-memory.dmp

Filesize
280KB

Download
memory/3012-31-0x0000000000E60000-0x0000000000EA6000-memory.dmp

Filesize
280KB

Download
memory/3012-32-0x0000000000080000-0x00000000000AF000-memory.dmp

Filesize
188KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads