formbook | 4bc9b634895368c7fbff430e5fae559d7710bdac7d6cbbf41d37f72bd06d8801

Analysis

max time kernel
146s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
24-12-2024 10:19

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General

Target

Quote NoRYU15674.exe
Size

534KB
MD5

4f75b9d6f4765318096199de4cc501a6
SHA1

ca57a26c665ec2b566fbd0c103cf44f6e0102810
SHA256

3295195cc0beb345e8af43273cbedbfcc631c4498f7a91bb1dfa82bfd1cda67b
SHA512

7596620eba746ebf0784970c80cf5c3ef563acb70dd0dd8a5762c0690e27eb84e311216924d82de8d28c47d3faec67a2507cb75a217364715fb25d37b7c6eecc
SSDEEP

12288:GAsiJr6HjcETqvMrrSYuQY413gIaENyztD00sxxi0/js:DFlgXTgMKI9Q0NaC0

Score

10^/10

formbook b26m discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

b26m

Decoy

zmdjsbe.com

fredandbettysdogtreats.com

naaacyjl.xyz

chestermclean.net

hbxemu.com

daniandlaila.com

liantongquan.com

clubdjportugal.online

ambcu.com

clinkssamui4.xyz

oebfcdtwwkdpspq.com

swnlmu.com

asctechagent.com

melhorearotina.online

infohouseti.com

busstoppanicbutton.com

cheyennewindenergy.com

partlee.com

855408.com

beyourownbossbyob.com

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

resource	yara_rule
behavioral2/memory/728-11-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/728-16-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/4664-22-0x0000000000CD0000-0x0000000000CFF000-memory.dmp	formbook

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 628 set thread context of 728	628	Quote NoRYU15674.exe	103
PID 728 set thread context of 3520	728	Quote NoRYU15674.exe	56
PID 4664 set thread context of 3520	4664	raserver.exe	56

System Location Discovery: System Language Discovery 1 TTPs 3 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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Quote NoRYU15674.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	raserver.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious behavior: EnumeratesProcesses 52 IoCs

pid	Process
628	Quote NoRYU15674.exe
628	Quote NoRYU15674.exe
628	Quote NoRYU15674.exe
628	Quote NoRYU15674.exe
628	Quote NoRYU15674.exe
628	Quote NoRYU15674.exe
728	Quote NoRYU15674.exe
728	Quote NoRYU15674.exe
728	Quote NoRYU15674.exe
728	Quote NoRYU15674.exe
4664	raserver.exe
4664	raserver.exe
4664	raserver.exe
4664	raserver.exe
4664	raserver.exe
4664	raserver.exe
4664	raserver.exe
4664	raserver.exe
4664	raserver.exe
4664	raserver.exe
4664	raserver.exe
4664	raserver.exe
4664	raserver.exe
4664	raserver.exe
4664	raserver.exe
4664	raserver.exe
4664	raserver.exe
4664	raserver.exe
4664	raserver.exe
4664	raserver.exe
4664	raserver.exe
4664	raserver.exe
4664	raserver.exe
4664	raserver.exe
4664	raserver.exe
4664	raserver.exe
4664	raserver.exe
4664	raserver.exe
4664	raserver.exe
4664	raserver.exe
4664	raserver.exe
4664	raserver.exe
4664	raserver.exe
4664	raserver.exe
4664	raserver.exe
4664	raserver.exe
4664	raserver.exe
4664	raserver.exe
4664	raserver.exe
4664	raserver.exe
4664	raserver.exe
4664	raserver.exe

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
728	Quote NoRYU15674.exe
728	Quote NoRYU15674.exe
728	Quote NoRYU15674.exe
4664	raserver.exe
4664	raserver.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	628	Quote NoRYU15674.exe
Token: SeDebugPrivilege	728	Quote NoRYU15674.exe
Token: SeDebugPrivilege	4664	raserver.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 628 wrote to memory of 2764	628	Quote NoRYU15674.exe	100
PID 628 wrote to memory of 2764	628	Quote NoRYU15674.exe	100
PID 628 wrote to memory of 2764	628	Quote NoRYU15674.exe	100
PID 628 wrote to memory of 4028	628	Quote NoRYU15674.exe	101
PID 628 wrote to memory of 4028	628	Quote NoRYU15674.exe	101
PID 628 wrote to memory of 4028	628	Quote NoRYU15674.exe	101
PID 628 wrote to memory of 3608	628	Quote NoRYU15674.exe	102
PID 628 wrote to memory of 3608	628	Quote NoRYU15674.exe	102
PID 628 wrote to memory of 3608	628	Quote NoRYU15674.exe	102
PID 628 wrote to memory of 728	628	Quote NoRYU15674.exe	103
PID 628 wrote to memory of 728	628	Quote NoRYU15674.exe	103
PID 628 wrote to memory of 728	628	Quote NoRYU15674.exe	103
PID 628 wrote to memory of 728	628	Quote NoRYU15674.exe	103
PID 628 wrote to memory of 728	628	Quote NoRYU15674.exe	103
PID 628 wrote to memory of 728	628	Quote NoRYU15674.exe	103
PID 3520 wrote to memory of 4664	3520	Explorer.EXE	104
PID 3520 wrote to memory of 4664	3520	Explorer.EXE	104
PID 3520 wrote to memory of 4664	3520	Explorer.EXE	104
PID 4664 wrote to memory of 4832	4664	raserver.exe	105
PID 4664 wrote to memory of 4832	4664	raserver.exe	105
PID 4664 wrote to memory of 4832	4664	raserver.exe	105

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:3520
- C:\Users\Admin\AppData\Local\Temp\Quote NoRYU15674.exe
  "C:\Users\Admin\AppData\Local\Temp\Quote NoRYU15674.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:628
- - C:\Users\Admin\AppData\Local\Temp\Quote NoRYU15674.exe
    "C:\Users\Admin\AppData\Local\Temp\Quote NoRYU15674.exe"
    3⤵
    PID:2764
- - C:\Users\Admin\AppData\Local\Temp\Quote NoRYU15674.exe
    "C:\Users\Admin\AppData\Local\Temp\Quote NoRYU15674.exe"
    3⤵
    PID:4028
- - C:\Users\Admin\AppData\Local\Temp\Quote NoRYU15674.exe
    "C:\Users\Admin\AppData\Local\Temp\Quote NoRYU15674.exe"
    3⤵
    PID:3608
- - C:\Users\Admin\AppData\Local\Temp\Quote NoRYU15674.exe
    "C:\Users\Admin\AppData\Local\Temp\Quote NoRYU15674.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:728
- C:\Windows\SysWOW64\raserver.exe
  "C:\Windows\SysWOW64\raserver.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:4664
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\Quote NoRYU15674.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:4832

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/628-13-0x00000000743F0000-0x0000000074BA0000-memory.dmp

Filesize
7.7MB

Download
memory/628-7-0x00000000743FE000-0x00000000743FF000-memory.dmp

Filesize
4KB

Download
memory/628-2-0x0000000007480000-0x0000000007A24000-memory.dmp

Filesize
5.6MB

Download
memory/628-3-0x0000000006F70000-0x0000000007002000-memory.dmp

Filesize
584KB

Download
memory/628-4-0x00000000743F0000-0x0000000074BA0000-memory.dmp

Filesize
7.7MB

Download
memory/628-5-0x00000000023D0000-0x00000000023DA000-memory.dmp

Filesize
40KB

Download
memory/628-6-0x00000000023E0000-0x00000000023EA000-memory.dmp

Filesize
40KB

Download
memory/628-0-0x00000000743FE000-0x00000000743FF000-memory.dmp

Filesize
4KB

Download
memory/628-8-0x00000000743F0000-0x0000000074BA0000-memory.dmp

Filesize
7.7MB

Download
memory/628-9-0x0000000008530000-0x00000000085CC000-memory.dmp

Filesize
624KB

Download
memory/628-10-0x0000000008490000-0x00000000084F8000-memory.dmp

Filesize
416KB

Download
memory/628-1-0x0000000000150000-0x00000000001DC000-memory.dmp

Filesize
560KB

Download
memory/728-17-0x0000000001380000-0x0000000001394000-memory.dmp

Filesize
80KB

Download
memory/728-14-0x0000000001860000-0x0000000001BAA000-memory.dmp

Filesize
3.3MB

Download
memory/728-11-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/728-16-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/3520-27-0x0000000008740000-0x0000000008813000-memory.dmp

Filesize
844KB

Download
memory/3520-23-0x0000000002CF0000-0x0000000002DED000-memory.dmp

Filesize
1012KB

Download
memory/3520-18-0x0000000002CF0000-0x0000000002DED000-memory.dmp

Filesize
1012KB

Download
memory/3520-28-0x0000000008740000-0x0000000008813000-memory.dmp

Filesize
844KB

Download
memory/3520-30-0x0000000008740000-0x0000000008813000-memory.dmp

Filesize
844KB

Download
memory/4664-21-0x0000000000F60000-0x0000000000F7F000-memory.dmp

Filesize
124KB

Download
memory/4664-19-0x0000000000F60000-0x0000000000F7F000-memory.dmp

Filesize
124KB

Download
memory/4664-22-0x0000000000CD0000-0x0000000000CFF000-memory.dmp

Filesize
188KB

Download