formbook | cf9565db0c7e242dafc592fd88893bf46a3201a17372675fef4cfcbd558d1c5b

Analysis

max time kernel
142s
max time network
122s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
05/04/2024, 05:20

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General

Target

$PLUGINSDIR/yfvmdnif.dll
Size

33KB
MD5

c6f46b711b17ddbcb63a52552f1545fd
SHA1

7f0cf73617829660b06ead76dc37db322f48a565
SHA256

fd1e3db80099afb4fad792e226d1055b350ee96286633a356926b7ac180932b0
SHA512

25862ccaab810ba1ac3c58b12aa8c114d25436f3f5273c4c59621044b398aa98f4d40569e5232aeaf1ef41c4e396ad172faa71de92aae8d196ad947666cc94f7
SSDEEP

384:SvrHKBoZA+9KuEWQZkVI4m9Vgf+1qzBzbEBehy8k/xwA9oKH9uQJcVre7:SawR9lQOVXO1qlbty8k/xhoiu6cV8

Score

10^/10

formbook dn7r rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

dn7r

Decoy

eventphotographerdfw.com

thehalalcoinstaking.com

philipfaziofineart.com

intercoh.com

gaiaseyephotography.com

chatbotforrealestate.com

lovelancemg.com

marlieskasberger.com

elcongoenespanol.info

lepirecredit.com

distribution-concept.com

e99game.com

exit11festival.com

twodollartoothbrushclub.com

cocktailsandlawn.com

performimprove.network

24horas-telefono-11840.com

cosmossify.com

kellenleote.com

perovskite.energy

Signatures

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

Formbook payload 2 IoCs

rat

resource	yara_rule
behavioral3/memory/544-1-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral3/memory/544-5-0x0000000000400000-0x000000000042F000-memory.dmp	formbook

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2900 set thread context of 544	2900	rundll32.exe	29
PID 544 set thread context of 1392	544	rundll32.exe	21

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2676	2592	WerFault.exe	30

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
544	rundll32.exe
544	rundll32.exe

Suspicious behavior: MapViewOfSection 3 IoCs

pid	Process
544	rundll32.exe
544	rundll32.exe
544	rundll32.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	544	rundll32.exe
Token: SeShutdownPrivilege	1392	Explorer.EXE

Suspicious use of WriteProcessMemory 28 IoCs

description	pid	Process	procid_target
PID 2160 wrote to memory of 2900	2160	rundll32.exe	28
PID 2160 wrote to memory of 2900	2160	rundll32.exe	28
PID 2160 wrote to memory of 2900	2160	rundll32.exe	28
PID 2160 wrote to memory of 2900	2160	rundll32.exe	28
PID 2160 wrote to memory of 2900	2160	rundll32.exe	28
PID 2160 wrote to memory of 2900	2160	rundll32.exe	28
PID 2160 wrote to memory of 2900	2160	rundll32.exe	28
PID 2900 wrote to memory of 544	2900	rundll32.exe	29
PID 2900 wrote to memory of 544	2900	rundll32.exe	29
PID 2900 wrote to memory of 544	2900	rundll32.exe	29
PID 2900 wrote to memory of 544	2900	rundll32.exe	29
PID 2900 wrote to memory of 544	2900	rundll32.exe	29
PID 2900 wrote to memory of 544	2900	rundll32.exe	29
PID 2900 wrote to memory of 544	2900	rundll32.exe	29
PID 2900 wrote to memory of 544	2900	rundll32.exe	29
PID 2900 wrote to memory of 544	2900	rundll32.exe	29
PID 2900 wrote to memory of 544	2900	rundll32.exe	29
PID 1392 wrote to memory of 2592	1392	Explorer.EXE	30
PID 1392 wrote to memory of 2592	1392	Explorer.EXE	30
PID 1392 wrote to memory of 2592	1392	Explorer.EXE	30
PID 1392 wrote to memory of 2592	1392	Explorer.EXE	30
PID 1392 wrote to memory of 2592	1392	Explorer.EXE	30
PID 1392 wrote to memory of 2592	1392	Explorer.EXE	30
PID 1392 wrote to memory of 2592	1392	Explorer.EXE	30
PID 2592 wrote to memory of 2676	2592	msiexec.exe	31
PID 2592 wrote to memory of 2676	2592	msiexec.exe	31
PID 2592 wrote to memory of 2676	2592	msiexec.exe	31
PID 2592 wrote to memory of 2676	2592	msiexec.exe	31

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1392
- C:\Windows\system32\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\yfvmdnif.dll,#1
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2160
- - C:\Windows\SysWOW64\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\yfvmdnif.dll,#1
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:2900
  - - C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\yfvmdnif.dll,#1
      4⤵
      Suspicious use of SetThreadContext
      Suspicious behavior: EnumeratesProcesses
      Suspicious behavior: MapViewOfSection
      Suspicious use of AdjustPrivilegeToken
      PID:544
- C:\Windows\SysWOW64\msiexec.exe
  "C:\Windows\SysWOW64\msiexec.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2592
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2592 -s 272
    3⤵
    - Program crash
    PID:2676

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

memory/544-1-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/544-3-0x0000000001F20000-0x0000000002223000-memory.dmp

Filesize
3.0MB

Download
memory/544-5-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/544-6-0x0000000000240000-0x0000000000255000-memory.dmp

Filesize
84KB

Download
memory/1392-7-0x0000000002A70000-0x0000000002B70000-memory.dmp

Filesize
1024KB

Download
memory/1392-8-0x0000000006AA0000-0x0000000006C3C000-memory.dmp

Filesize
1.6MB

Download
memory/1392-15-0x0000000006AA0000-0x0000000006C3C000-memory.dmp

Filesize
1.6MB

Download
memory/2592-9-0x0000000000E30000-0x0000000000E44000-memory.dmp

Filesize
80KB

Download
memory/2592-10-0x0000000000E30000-0x0000000000E44000-memory.dmp

Filesize
80KB

Download
memory/2592-12-0x0000000000E30000-0x0000000000E44000-memory.dmp

Filesize
80KB

Download
memory/2900-0-0x0000000010000000-0x000000001000B000-memory.dmp

Filesize
44KB

Download
memory/2900-2-0x0000000010000000-0x000000001000B000-memory.dmp

Filesize
44KB

Download