formbook | 4a85bac71b81338df2e724c587995e231dfc0b32b004cfea253b8d94422cc4ba

Analysis

max time kernel
148s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
25-11-2024 12:39

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General

Target

brief nr. 001150_51_2024-11-19_134943.docx.exe
Size

1.1MB
MD5

b333b741b51e1fa861d44c2846939182
SHA1

1fe1597be441315cb76e8bfddf97c2344a5d206a
SHA256

4a85bac71b81338df2e724c587995e231dfc0b32b004cfea253b8d94422cc4ba
SHA512

c85f9f14342e6d49b9d43cf3475f91a5a54cfc4fb89397572027912f4c478b62e306ca0fa2a886e1c89e02c226583eb97eefc04fa45efa8f2d05086a12bf197c
SSDEEP

24576:ctb20pkaCqT5TBWgNQ7a6Vjaab/dPQVW0hFdc6A:FVg5tQ7a6VeGV0WWFC5

Score

10^/10

formbook ud04 discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

ud04

Decoy

oum7.pro

ovonordisk.online

akrzus.pro

tendmtedcpsa.site

mm.foo

animevyhgsft29817.click

digdxxb.info

1130.vip

uy-now-pay-later-74776.bond

ybzert.online

edcn.link

rime-flow-bay.xyz

nd777id.beauty

otoyama.shop

lranchomx.xyz

unluoren.top

uglesang-troms.net

udulbet88.net

raquewear.shop

ijanarko.net

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/1424-7-0x00000000006D0000-0x00000000006FF000-memory.dmp	formbook
behavioral2/memory/1424-11-0x00000000006D0000-0x00000000006FF000-memory.dmp	formbook
behavioral2/memory/4696-17-0x00000000007C0000-0x00000000007EF000-memory.dmp	formbook

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2452 set thread context of 1424	2452	brief nr. 001150_51_2024-11-19_134943.docx.exe	83
PID 1424 set thread context of 3516	1424	svchost.exe	56
PID 4696 set thread context of 3516	4696	cscript.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	cscript.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	brief nr. 001150_51_2024-11-19_134943.docx.exe

Suspicious behavior: EnumeratesProcesses 60 IoCs

pid	Process
1424	svchost.exe
1424	svchost.exe
1424	svchost.exe
1424	svchost.exe
4696	cscript.exe
4696	cscript.exe
4696	cscript.exe
4696	cscript.exe
4696	cscript.exe
4696	cscript.exe
4696	cscript.exe
4696	cscript.exe
4696	cscript.exe
4696	cscript.exe
4696	cscript.exe
4696	cscript.exe
4696	cscript.exe
4696	cscript.exe
4696	cscript.exe
4696	cscript.exe
4696	cscript.exe
4696	cscript.exe
4696	cscript.exe
4696	cscript.exe
4696	cscript.exe
4696	cscript.exe
4696	cscript.exe
4696	cscript.exe
4696	cscript.exe
4696	cscript.exe
4696	cscript.exe
4696	cscript.exe
4696	cscript.exe
4696	cscript.exe
4696	cscript.exe
4696	cscript.exe
4696	cscript.exe
4696	cscript.exe
4696	cscript.exe
4696	cscript.exe
4696	cscript.exe
4696	cscript.exe
4696	cscript.exe
4696	cscript.exe
4696	cscript.exe
4696	cscript.exe
4696	cscript.exe
4696	cscript.exe
4696	cscript.exe
4696	cscript.exe
4696	cscript.exe
4696	cscript.exe
4696	cscript.exe
4696	cscript.exe
4696	cscript.exe
4696	cscript.exe
4696	cscript.exe
4696	cscript.exe
4696	cscript.exe
4696	cscript.exe

Suspicious behavior: MapViewOfSection 7 IoCs

pid	Process
2452	brief nr. 001150_51_2024-11-19_134943.docx.exe
2452	brief nr. 001150_51_2024-11-19_134943.docx.exe
1424	svchost.exe
1424	svchost.exe
1424	svchost.exe
4696	cscript.exe
4696	cscript.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1424	svchost.exe
Token: SeDebugPrivilege	4696	cscript.exe

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
2452	brief nr. 001150_51_2024-11-19_134943.docx.exe
2452	brief nr. 001150_51_2024-11-19_134943.docx.exe

Suspicious use of SendNotifyMessage 2 IoCs

pid	Process
2452	brief nr. 001150_51_2024-11-19_134943.docx.exe
2452	brief nr. 001150_51_2024-11-19_134943.docx.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 2452 wrote to memory of 1424	2452	brief nr. 001150_51_2024-11-19_134943.docx.exe	83
PID 2452 wrote to memory of 1424	2452	brief nr. 001150_51_2024-11-19_134943.docx.exe	83
PID 2452 wrote to memory of 1424	2452	brief nr. 001150_51_2024-11-19_134943.docx.exe	83
PID 2452 wrote to memory of 1424	2452	brief nr. 001150_51_2024-11-19_134943.docx.exe	83
PID 3516 wrote to memory of 4696	3516	Explorer.EXE	85
PID 3516 wrote to memory of 4696	3516	Explorer.EXE	85
PID 3516 wrote to memory of 4696	3516	Explorer.EXE	85
PID 4696 wrote to memory of 3560	4696	cscript.exe	93
PID 4696 wrote to memory of 3560	4696	cscript.exe	93
PID 4696 wrote to memory of 3560	4696	cscript.exe	93

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:3516
- C:\Users\Admin\AppData\Local\Temp\brief nr. 001150_51_2024-11-19_134943.docx.exe
  "C:\Users\Admin\AppData\Local\Temp\brief nr. 001150_51_2024-11-19_134943.docx.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:2452
- - C:\Windows\SysWOW64\svchost.exe
    "C:\Users\Admin\AppData\Local\Temp\brief nr. 001150_51_2024-11-19_134943.docx.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:1424
- C:\Windows\SysWOW64\autofmt.exe
  "C:\Windows\SysWOW64\autofmt.exe"
  2⤵
  PID:4548
- C:\Windows\SysWOW64\cscript.exe
  "C:\Windows\SysWOW64\cscript.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:4696
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Windows\SysWOW64\svchost.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:3560

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/1424-7-0x00000000006D0000-0x00000000006FF000-memory.dmp

Filesize
188KB

Download
memory/1424-10-0x0000000001200000-0x000000000154A000-memory.dmp

Filesize
3.3MB

Download
memory/1424-12-0x0000000000F10000-0x0000000000F24000-memory.dmp

Filesize
80KB

Download
memory/1424-11-0x00000000006D0000-0x00000000006FF000-memory.dmp

Filesize
188KB

Download
memory/2452-6-0x0000000000B60000-0x0000000000F60000-memory.dmp

Filesize
4.0MB

Download
memory/3516-21-0x00000000089D0000-0x0000000008B48000-memory.dmp

Filesize
1.5MB

Download
memory/3516-13-0x0000000008890000-0x00000000089C7000-memory.dmp

Filesize
1.2MB

Download
memory/3516-24-0x00000000089D0000-0x0000000008B48000-memory.dmp

Filesize
1.5MB

Download
memory/3516-16-0x0000000008890000-0x00000000089C7000-memory.dmp

Filesize
1.2MB

Download
memory/3516-22-0x00000000089D0000-0x0000000008B48000-memory.dmp

Filesize
1.5MB

Download
memory/4696-15-0x0000000000510000-0x0000000000537000-memory.dmp

Filesize
156KB

Download
memory/4696-17-0x00000000007C0000-0x00000000007EF000-memory.dmp

Filesize
188KB

Download
memory/4696-14-0x0000000000510000-0x0000000000537000-memory.dmp

Filesize
156KB

Download