formbook | e1902171c2bba8b0280e747ec2457209c1b32bf899d85f241c2993fdcba1ac31

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
09-10-2024 02:31

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General

Target

e1902171c2bba8b0280e747ec2457209c1b32bf899d85f241c2993fdcba1ac31.exe
Size

665KB
MD5

d57281188377857e91520a46ad75a1d8
SHA1

2b99fd634fde701062cb163bfdc5c410a872e50f
SHA256

e1902171c2bba8b0280e747ec2457209c1b32bf899d85f241c2993fdcba1ac31
SHA512

89f5424a818efd91c13acb7f38c3a9b0d1959abada6e5aba96dec591b1ce275cac26b00a94371f7fe90d1f250b9370ac089c0253392eda96fa9e11d032868719
SSDEEP

12288:mLNhkYRig7eFSYOErtXYHaVely7tpdV84KkRfAovmE:SHag7WnvhDT7L84Kb5E

Score

10^/10

formbook cu29 discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

cu29

Decoy

qidr.shop

usinessaviationconsulting.net

68716329.xyz

nd-los.net

ealthironcladguarantee.shop

oftware-download-69354.bond

48372305.top

omeownershub.top

mall-chilli.top

ajakgoid.online

ire-changer-53482.bond

rugsrx.shop

oyang123.info

azino-forum-pro.online

817715.rest

layman.vip

eb777.club

ovatonica.net

urgaslotvip.website

inn-paaaa.buzz

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
behavioral2/memory/3084-11-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/3084-16-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/3084-20-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/4636-28-0x0000000000360000-0x000000000038F000-memory.dmp	formbook

Uses the VBS compiler for execution 1 TTPs

Command and Scripting Interpreter
T1059

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 3040 set thread context of 3084	3040	e1902171c2bba8b0280e747ec2457209c1b32bf899d85f241c2993fdcba1ac31.exe	86
PID 3084 set thread context of 3544	3084	vbc.exe	56
PID 3084 set thread context of 3544	3084	vbc.exe	56
PID 4636 set thread context of 3544	4636	wlanext.exe	56

System Location Discovery: System Language Discovery 1 TTPs 4 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	wlanext.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	e1902171c2bba8b0280e747ec2457209c1b32bf899d85f241c2993fdcba1ac31.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vbc.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	Explorer.EXE

Suspicious behavior: EnumeratesProcesses 56 IoCs

pid	Process
3084	vbc.exe
3084	vbc.exe
3084	vbc.exe
3084	vbc.exe
3084	vbc.exe
3084	vbc.exe
4636	wlanext.exe
4636	wlanext.exe
4636	wlanext.exe
4636	wlanext.exe
4636	wlanext.exe
4636	wlanext.exe
4636	wlanext.exe
4636	wlanext.exe
4636	wlanext.exe
4636	wlanext.exe
4636	wlanext.exe
4636	wlanext.exe
4636	wlanext.exe
4636	wlanext.exe
4636	wlanext.exe
4636	wlanext.exe
4636	wlanext.exe
4636	wlanext.exe
4636	wlanext.exe
4636	wlanext.exe
4636	wlanext.exe
4636	wlanext.exe
4636	wlanext.exe
4636	wlanext.exe
4636	wlanext.exe
4636	wlanext.exe
4636	wlanext.exe
4636	wlanext.exe
4636	wlanext.exe
4636	wlanext.exe
4636	wlanext.exe
4636	wlanext.exe
4636	wlanext.exe
4636	wlanext.exe
4636	wlanext.exe
4636	wlanext.exe
4636	wlanext.exe
4636	wlanext.exe
4636	wlanext.exe
4636	wlanext.exe
4636	wlanext.exe
4636	wlanext.exe
4636	wlanext.exe
4636	wlanext.exe
4636	wlanext.exe
4636	wlanext.exe
4636	wlanext.exe
4636	wlanext.exe
4636	wlanext.exe
4636	wlanext.exe

Suspicious behavior: MapViewOfSection 6 IoCs

pid	Process
3084	vbc.exe
3084	vbc.exe
3084	vbc.exe
3084	vbc.exe
4636	wlanext.exe
4636	wlanext.exe

Suspicious use of AdjustPrivilegeToken 10 IoCs

description	pid	Process
Token: SeDebugPrivilege	3084	vbc.exe
Token: SeDebugPrivilege	4636	wlanext.exe
Token: SeShutdownPrivilege	3544	Explorer.EXE
Token: SeCreatePagefilePrivilege	3544	Explorer.EXE
Token: SeShutdownPrivilege	3544	Explorer.EXE
Token: SeCreatePagefilePrivilege	3544	Explorer.EXE
Token: SeShutdownPrivilege	3544	Explorer.EXE
Token: SeCreatePagefilePrivilege	3544	Explorer.EXE
Token: SeShutdownPrivilege	3544	Explorer.EXE
Token: SeCreatePagefilePrivilege	3544	Explorer.EXE

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
3544	Explorer.EXE
3544	Explorer.EXE

Suspicious use of UnmapMainImage 1 IoCs

pid	Process
3544	Explorer.EXE

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 3040 wrote to memory of 3084	3040	e1902171c2bba8b0280e747ec2457209c1b32bf899d85f241c2993fdcba1ac31.exe	86
PID 3040 wrote to memory of 3084	3040	e1902171c2bba8b0280e747ec2457209c1b32bf899d85f241c2993fdcba1ac31.exe	86
PID 3040 wrote to memory of 3084	3040	e1902171c2bba8b0280e747ec2457209c1b32bf899d85f241c2993fdcba1ac31.exe	86
PID 3040 wrote to memory of 3084	3040	e1902171c2bba8b0280e747ec2457209c1b32bf899d85f241c2993fdcba1ac31.exe	86
PID 3040 wrote to memory of 3084	3040	e1902171c2bba8b0280e747ec2457209c1b32bf899d85f241c2993fdcba1ac31.exe	86
PID 3040 wrote to memory of 3084	3040	e1902171c2bba8b0280e747ec2457209c1b32bf899d85f241c2993fdcba1ac31.exe	86
PID 3084 wrote to memory of 4636	3084	vbc.exe	92
PID 3084 wrote to memory of 4636	3084	vbc.exe	92
PID 3084 wrote to memory of 4636	3084	vbc.exe	92
PID 4636 wrote to memory of 3444	4636	wlanext.exe	93
PID 4636 wrote to memory of 3444	4636	wlanext.exe	93
PID 4636 wrote to memory of 3444	4636	wlanext.exe	93

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of UnmapMainImage
PID:3544
- C:\Users\Admin\AppData\Local\Temp\e1902171c2bba8b0280e747ec2457209c1b32bf899d85f241c2993fdcba1ac31.exe
  "C:\Users\Admin\AppData\Local\Temp\e1902171c2bba8b0280e747ec2457209c1b32bf899d85f241c2993fdcba1ac31.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3040
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
    3⤵
    - 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:3084
  - - C:\Windows\SysWOW64\wlanext.exe
      "C:\Windows\SysWOW64\wlanext.exe"
      4⤵
      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:4636
    - - C:\Windows\SysWOW64\cmd.exe
        
        /c del "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
        5⤵
        System Location Discovery: System Language Discovery
        
        PID:3444
- C:\Windows\SysWOW64\autochk.exe
  "C:\Windows\SysWOW64\autochk.exe"
  2⤵
  PID:2848
- C:\Windows\SysWOW64\autochk.exe
  "C:\Windows\SysWOW64\autochk.exe"
  2⤵
  PID:3460
- C:\Windows\SysWOW64\autochk.exe
  "C:\Windows\SysWOW64\autochk.exe"
  2⤵
  PID:3508
- C:\Windows\SysWOW64\autochk.exe
  "C:\Windows\SysWOW64\autochk.exe"
  2⤵
  PID:2748
- C:\Windows\SysWOW64\autochk.exe
  "C:\Windows\SysWOW64\autochk.exe"
  2⤵
  PID:4100

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

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/3040-13-0x00000000751C0000-0x0000000075970000-memory.dmp

Filesize
7.7MB

Download
memory/3040-1-0x0000000000650000-0x00000000006FC000-memory.dmp

Filesize
688KB

Download
memory/3040-2-0x00000000055D0000-0x0000000005B74000-memory.dmp

Filesize
5.6MB

Download
memory/3040-3-0x0000000005100000-0x0000000005192000-memory.dmp

Filesize
584KB

Download
memory/3040-4-0x0000000005290000-0x000000000529A000-memory.dmp

Filesize
40KB

Download
memory/3040-5-0x00000000751C0000-0x0000000075970000-memory.dmp

Filesize
7.7MB

Download
memory/3040-6-0x00000000055B0000-0x00000000055C8000-memory.dmp

Filesize
96KB

Download
memory/3040-7-0x00000000751CE000-0x00000000751CF000-memory.dmp

Filesize
4KB

Download
memory/3040-8-0x00000000751C0000-0x0000000075970000-memory.dmp

Filesize
7.7MB

Download
memory/3040-9-0x0000000006280000-0x00000000062F6000-memory.dmp

Filesize
472KB

Download
memory/3040-10-0x00000000064D0000-0x000000000656C000-memory.dmp

Filesize
624KB

Download
memory/3040-0-0x00000000751CE000-0x00000000751CF000-memory.dmp

Filesize
4KB

Download
memory/3084-17-0x0000000001500000-0x0000000001515000-memory.dmp

Filesize
84KB

Download
memory/3084-20-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/3084-11-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/3084-16-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/3084-14-0x0000000001990000-0x0000000001CDA000-memory.dmp

Filesize
3.3MB

Download
memory/3084-21-0x0000000001880000-0x0000000001895000-memory.dmp

Filesize
84KB

Download
memory/3544-22-0x0000000008750000-0x00000000088BD000-memory.dmp

Filesize
1.4MB

Download
memory/3544-18-0x0000000008330000-0x0000000008452000-memory.dmp

Filesize
1.1MB

Download
memory/3544-23-0x0000000008330000-0x0000000008452000-memory.dmp

Filesize
1.1MB

Download
memory/3544-27-0x0000000008750000-0x00000000088BD000-memory.dmp

Filesize
1.4MB

Download
memory/3544-29-0x0000000002BB0000-0x0000000002CA4000-memory.dmp

Filesize
976KB

Download
memory/3544-31-0x0000000002BB0000-0x0000000002CA4000-memory.dmp

Filesize
976KB

Download
memory/3544-32-0x0000000002BB0000-0x0000000002CA4000-memory.dmp

Filesize
976KB

Download
memory/4636-26-0x0000000000A10000-0x0000000000A27000-memory.dmp

Filesize
92KB

Download
memory/4636-24-0x0000000000A10000-0x0000000000A27000-memory.dmp

Filesize
92KB

Download
memory/4636-28-0x0000000000360000-0x000000000038F000-memory.dmp

Filesize
188KB

Download