formbook | a8770dcdc0b4dc16d1bbad2af585b6e03442054cc7064ecb474e8ce448ae4067

Analysis

max time kernel
147s
max time network
143s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
10-01-2025 11:21

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General

Target

bukron2.1.exe
Size

1.7MB
MD5

88d15a726fe470a2ce43830f72e0a54a
SHA1

f89cc778c0e38eb023f925066c2dd918e0a594c9
SHA256

a8770dcdc0b4dc16d1bbad2af585b6e03442054cc7064ecb474e8ce448ae4067
SHA512

c5b6a963f1f5295ae57bf5eb43f0e22a04db81379af353cf43d196d7caa21db795d0282b203f1d1c8e012f9deba5b9d2b35355533e5a6bbf0a7e9a680d0d4d14
SSDEEP

24576:xqDEvCTbMWu7rQYlBQcBiT6rprG8a3nbbxlYGMRVpeRENRb98LolWwk8Kn:xTvC/MTQYxsWR7a3bPYGMbp8iRbTpK

Score

10^/10

formbook hwu6 discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

hwu6

Decoy

lf758.vip

locerin-hair.shop

vytech.net

pet-insurance-intl-7990489.live

thepolithat.buzz

d66dr114gl.bond

suv-deals-49508.bond

job-offer-53922.bond

drstone1.click

lebahsemesta57.click

olmanihousel.shop

piedmontcsb.info

trisula888x.top

66sodovna.net

dental-implants-83810.bond

imxtld.club

frozenpines.net

ffgzgbl.xyz

tlc7z.rest

alexismuller.design

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/5020-3-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/5020-6-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/2136-12-0x0000000000380000-0x00000000003AF000-memory.dmp	formbook

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 4592 set thread context of 5020	4592	bukron2.1.exe	84
PID 5020 set thread context of 3560	5020	svchost.exe	56
PID 2136 set thread context of 3560	2136	rundll32.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	bukron2.1.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious behavior: EnumeratesProcesses 62 IoCs

pid	Process
5020	svchost.exe
5020	svchost.exe
5020	svchost.exe
5020	svchost.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe
2136	rundll32.exe

Suspicious behavior: MapViewOfSection 6 IoCs

pid	Process
4592	bukron2.1.exe
5020	svchost.exe
5020	svchost.exe
5020	svchost.exe
2136	rundll32.exe
2136	rundll32.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	5020	svchost.exe
Token: SeDebugPrivilege	2136	rundll32.exe

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
4592	bukron2.1.exe
4592	bukron2.1.exe

Suspicious use of SendNotifyMessage 2 IoCs

pid	Process
4592	bukron2.1.exe
4592	bukron2.1.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 4592 wrote to memory of 5020	4592	bukron2.1.exe	84
PID 4592 wrote to memory of 5020	4592	bukron2.1.exe	84
PID 4592 wrote to memory of 5020	4592	bukron2.1.exe	84
PID 4592 wrote to memory of 5020	4592	bukron2.1.exe	84
PID 3560 wrote to memory of 2136	3560	Explorer.EXE	85
PID 3560 wrote to memory of 2136	3560	Explorer.EXE	85
PID 3560 wrote to memory of 2136	3560	Explorer.EXE	85
PID 2136 wrote to memory of 2024	2136	rundll32.exe	86
PID 2136 wrote to memory of 2024	2136	rundll32.exe	86
PID 2136 wrote to memory of 2024	2136	rundll32.exe	86

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:3560
- C:\Users\Admin\AppData\Local\Temp\bukron2.1.exe
  "C:\Users\Admin\AppData\Local\Temp\bukron2.1.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of WriteProcessMemory
  PID:4592
- - C:\Windows\SysWOW64\svchost.exe
    "C:\Users\Admin\AppData\Local\Temp\bukron2.1.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:5020
- C:\Windows\SysWOW64\rundll32.exe
  "C:\Windows\SysWOW64\rundll32.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:2136
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Windows\SysWOW64\svchost.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2024

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/2136-9-0x0000000000210000-0x0000000000224000-memory.dmp

Filesize
80KB

Download
memory/2136-12-0x0000000000380000-0x00000000003AF000-memory.dmp

Filesize
188KB

Download
memory/2136-11-0x0000000000210000-0x0000000000224000-memory.dmp

Filesize
80KB

Download
memory/3560-13-0x0000000003280000-0x0000000003340000-memory.dmp

Filesize
768KB

Download
memory/3560-8-0x0000000003280000-0x0000000003340000-memory.dmp

Filesize
768KB

Download
memory/3560-17-0x0000000008BF0000-0x0000000008CFC000-memory.dmp

Filesize
1.0MB

Download
memory/3560-18-0x0000000008BF0000-0x0000000008CFC000-memory.dmp

Filesize
1.0MB

Download
memory/3560-20-0x0000000008BF0000-0x0000000008CFC000-memory.dmp

Filesize
1.0MB

Download
memory/4592-2-0x0000000001140000-0x0000000001540000-memory.dmp

Filesize
4.0MB

Download
memory/5020-6-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/5020-7-0x0000000001050000-0x0000000001064000-memory.dmp

Filesize
80KB

Download
memory/5020-4-0x0000000001100000-0x000000000144A000-memory.dmp

Filesize
3.3MB

Download
memory/5020-3-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download