formbook | 4873fc7cab19439ccbc5cfffcc818ed55cd682cd5475889c7062476a877438ce

Analysis

max time kernel
148s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
17-04-2024 23:53

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General

Target

$PLUGINSDIR/jaqxzro.dll
Size

29KB
MD5

1e8aa5fcc0f7de7a0836081dd9efff05
SHA1

48317ef5f587f52fd34b42164dfb893dcde95e1b
SHA256

5389af7b3d0f5a3496cd2aa538a6ee01fd5a9bd1a8fcf3b9411f4112313d43af
SHA512

addd27d8923bf5d3f7d87e3eb2f6138d05532aa7c9340fde2f998a84fa87f227b63cd515176940de099d4f8dc46d1ab7467f4e347e266d0ef128d7337d79ea16
SSDEEP

384:IcOhNOWCf3iUgfews69swci/+9YFmtgqQzZQFORdP2NG6zZHZD24mYfVSUB+V6G4:DC9szi/MeqQqgRd2pZMbwjGANT5

Score

10^/10

formbook w6ya rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

w6ya

Decoy

auden-audio.com

zombieodyssey.com

hdpthg.com

toddtechnical.com

njsdgz.com

yieldfarm.world

guardsveirfynews.net

atmamandir.info

eskisehirtostcusu.online

arrozz.net

v99king.win

jaxonboxing.com

morganevans.net

syandeg.com

valleyofplants.com

corsosportorico.com

tak.support

blacktgpc.com

herdpetshop.com

iifkvhns.xyz

Signatures

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

Formbook payload 4 IoCs

rat

resource	yara_rule
behavioral4/memory/4256-1-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral4/memory/4256-5-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral4/memory/3428-10-0x0000000000930000-0x000000000095F000-memory.dmp	formbook
behavioral4/memory/3428-12-0x0000000000930000-0x000000000095F000-memory.dmp	formbook

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 4936 set thread context of 4256	4936	rundll32.exe	89
PID 4256 set thread context of 3476	4256	rundll32.exe	55
PID 3428 set thread context of 3476	3428	msdt.exe	55

Suspicious behavior: EnumeratesProcesses 60 IoCs

pid	Process
4256	rundll32.exe
4256	rundll32.exe
4256	rundll32.exe
4256	rundll32.exe
3428	msdt.exe
3428	msdt.exe
3428	msdt.exe
3428	msdt.exe
3428	msdt.exe
3428	msdt.exe
3428	msdt.exe
3428	msdt.exe
3428	msdt.exe
3428	msdt.exe
3428	msdt.exe
3428	msdt.exe
3428	msdt.exe
3428	msdt.exe
3428	msdt.exe
3428	msdt.exe
3428	msdt.exe
3428	msdt.exe
3428	msdt.exe
3428	msdt.exe
3428	msdt.exe
3428	msdt.exe
3428	msdt.exe
3428	msdt.exe
3428	msdt.exe
3428	msdt.exe
3428	msdt.exe
3428	msdt.exe
3428	msdt.exe
3428	msdt.exe
3428	msdt.exe
3428	msdt.exe
3428	msdt.exe
3428	msdt.exe
3428	msdt.exe
3428	msdt.exe
3428	msdt.exe
3428	msdt.exe
3428	msdt.exe
3428	msdt.exe
3428	msdt.exe
3428	msdt.exe
3428	msdt.exe
3428	msdt.exe
3428	msdt.exe
3428	msdt.exe
3428	msdt.exe
3428	msdt.exe
3428	msdt.exe
3428	msdt.exe
3428	msdt.exe
3428	msdt.exe
3428	msdt.exe
3428	msdt.exe
3428	msdt.exe
3428	msdt.exe

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
4256	rundll32.exe
4256	rundll32.exe
4256	rundll32.exe
3428	msdt.exe
3428	msdt.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4256	rundll32.exe
Token: SeDebugPrivilege	3428	msdt.exe

Suspicious use of UnmapMainImage 1 IoCs

pid	Process
3476	Explorer.EXE

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 3536 wrote to memory of 4936	3536	rundll32.exe	86
PID 3536 wrote to memory of 4936	3536	rundll32.exe	86
PID 3536 wrote to memory of 4936	3536	rundll32.exe	86
PID 4936 wrote to memory of 4256	4936	rundll32.exe	89
PID 4936 wrote to memory of 4256	4936	rundll32.exe	89
PID 4936 wrote to memory of 4256	4936	rundll32.exe	89
PID 4936 wrote to memory of 4256	4936	rundll32.exe	89
PID 4936 wrote to memory of 4256	4936	rundll32.exe	89
PID 4936 wrote to memory of 4256	4936	rundll32.exe	89
PID 3476 wrote to memory of 3428	3476	Explorer.EXE	90
PID 3476 wrote to memory of 3428	3476	Explorer.EXE	90
PID 3476 wrote to memory of 3428	3476	Explorer.EXE	90
PID 3428 wrote to memory of 648	3428	msdt.exe	93
PID 3428 wrote to memory of 648	3428	msdt.exe	93
PID 3428 wrote to memory of 648	3428	msdt.exe	93

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:3476
- C:\Windows\system32\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\jaqxzro.dll,#1
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3536
- - C:\Windows\SysWOW64\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\jaqxzro.dll,#1
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:4936
  - - C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\jaqxzro.dll,#1
      4⤵
      Suspicious use of SetThreadContext
      Suspicious behavior: EnumeratesProcesses
      Suspicious behavior: MapViewOfSection
      Suspicious use of AdjustPrivilegeToken
      PID:4256
- C:\Windows\SysWOW64\msdt.exe
  "C:\Windows\SysWOW64\msdt.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3428
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Windows\SysWOW64\rundll32.exe"
    3⤵
    PID:648

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

memory/3428-14-0x0000000002740000-0x00000000027D3000-memory.dmp

Filesize
588KB

Download
memory/3428-12-0x0000000000930000-0x000000000095F000-memory.dmp

Filesize
188KB

Download
memory/3428-9-0x0000000000890000-0x00000000008E7000-memory.dmp

Filesize
348KB

Download
memory/3428-10-0x0000000000930000-0x000000000095F000-memory.dmp

Filesize
188KB

Download
memory/3428-11-0x0000000002B80000-0x0000000002ECA000-memory.dmp

Filesize
3.3MB

Download
memory/3428-8-0x0000000000890000-0x00000000008E7000-memory.dmp

Filesize
348KB

Download
memory/3476-22-0x0000000008790000-0x0000000008878000-memory.dmp

Filesize
928KB

Download
memory/3476-19-0x0000000008790000-0x0000000008878000-memory.dmp

Filesize
928KB

Download
memory/3476-7-0x0000000007E50000-0x0000000007F68000-memory.dmp

Filesize
1.1MB

Download
memory/3476-18-0x0000000008790000-0x0000000008878000-memory.dmp

Filesize
928KB

Download
memory/3476-15-0x0000000007E50000-0x0000000007F68000-memory.dmp

Filesize
1.1MB

Download
memory/4256-6-0x0000000000F50000-0x0000000000F64000-memory.dmp

Filesize
80KB

Download
memory/4256-5-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/4256-1-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/4256-3-0x0000000002C80000-0x0000000002FCA000-memory.dmp

Filesize
3.3MB

Download
memory/4936-0-0x0000000075680000-0x000000007568B000-memory.dmp

Filesize
44KB

Download
memory/4936-2-0x0000000075680000-0x000000007568B000-memory.dmp

Filesize
44KB

Download