formbook | ef0a49acd91623c090732ba2b2e15f707786e3554f71ac7b020b9e98a690b5f8

Analysis

max time kernel
145s
max time network
144s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
08-10-2024 13:15

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General

Target

Dekont.pdf.exe
Size

634KB
MD5

ec3a89fb3f145a68a25284c99c0e714e
SHA1

37f1784b83b3951be610bcc0a88d729aba113f7e
SHA256

462338cc416f17bb48135254e384d49b87dde3f0c40e6c51a70ad7abdecfc231
SHA512

b8e98cd2b5e8739f51fa6762183b85b33c613a47f6942dfba9ed6ad6485608b939589fee899ea5550030dd2d4cc8d734c235ed15cc5ab62493a60b6235fb594e
SSDEEP

12288:OnCiPGlFpYu3pOT+thfn3tumqHZGRosZQve/5hMB2Oy4IZklPrbH6ec4kqNu4FbX:++pl3Dth/3t9qHbsus228I2nAqNusbNB

Score

10^/10

formbook m10i discovery execution rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

m10i

Decoy

rmani.today

ifebork.xyz

randovation.net

itchen-remodeling-65686.bond

himu.world

reverie.net

9038.top

rowahome.live

obility-scooters-63189.bond

iangchunqiu.top

yhd.fun

eniorsforseniors.biz

z9zs2.shop

kkjinni.buzz

22av373vu.autos

allnyy.fun

qst.digital

rcap.info

745.top

earfulabjectshirkwashclothe.cfd

Signatures

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

Formbook payload 3 IoCs

rat

resource	yara_rule
behavioral2/memory/3268-11-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/3268-21-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/2212-69-0x00000000007C0000-0x00000000007EF000-memory.dmp	formbook

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
5092	powershell.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	Dekont.pdf.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 3576 set thread context of 3268	3576	Dekont.pdf.exe	88
PID 3268 set thread context of 3468	3268	Dekont.pdf.exe	56
PID 2212 set thread context of 3468	2212	rundll32.exe	56

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

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	Dekont.pdf.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.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 58 IoCs

pid	Process
3268	Dekont.pdf.exe
3268	Dekont.pdf.exe
3268	Dekont.pdf.exe
3268	Dekont.pdf.exe
5092	powershell.exe
5092	powershell.exe
2212	rundll32.exe
2212	rundll32.exe
2212	rundll32.exe
2212	rundll32.exe
2212	rundll32.exe
2212	rundll32.exe
2212	rundll32.exe
2212	rundll32.exe
2212	rundll32.exe
2212	rundll32.exe
2212	rundll32.exe
2212	rundll32.exe
2212	rundll32.exe
2212	rundll32.exe
2212	rundll32.exe
2212	rundll32.exe
2212	rundll32.exe
2212	rundll32.exe
2212	rundll32.exe
2212	rundll32.exe
2212	rundll32.exe
2212	rundll32.exe
2212	rundll32.exe
2212	rundll32.exe
2212	rundll32.exe
2212	rundll32.exe
2212	rundll32.exe
2212	rundll32.exe
2212	rundll32.exe
2212	rundll32.exe
2212	rundll32.exe
2212	rundll32.exe
2212	rundll32.exe
2212	rundll32.exe
2212	rundll32.exe
2212	rundll32.exe
2212	rundll32.exe
2212	rundll32.exe
2212	rundll32.exe
2212	rundll32.exe
2212	rundll32.exe
2212	rundll32.exe
2212	rundll32.exe
2212	rundll32.exe
2212	rundll32.exe
2212	rundll32.exe
2212	rundll32.exe
2212	rundll32.exe
2212	rundll32.exe
2212	rundll32.exe
2212	rundll32.exe
2212	rundll32.exe

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
3268	Dekont.pdf.exe
3268	Dekont.pdf.exe
3268	Dekont.pdf.exe
2212	rundll32.exe
2212	rundll32.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeDebugPrivilege	3268	Dekont.pdf.exe
Token: SeDebugPrivilege	5092	powershell.exe
Token: SeDebugPrivilege	2212	rundll32.exe
Token: SeShutdownPrivilege	3468	Explorer.EXE
Token: SeCreatePagefilePrivilege	3468	Explorer.EXE

Suspicious use of UnmapMainImage 1 IoCs

pid	Process
3468	Explorer.EXE

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 3576 wrote to memory of 5092	3576	Dekont.pdf.exe	86
PID 3576 wrote to memory of 5092	3576	Dekont.pdf.exe	86
PID 3576 wrote to memory of 5092	3576	Dekont.pdf.exe	86
PID 3576 wrote to memory of 3268	3576	Dekont.pdf.exe	88
PID 3576 wrote to memory of 3268	3576	Dekont.pdf.exe	88
PID 3576 wrote to memory of 3268	3576	Dekont.pdf.exe	88
PID 3576 wrote to memory of 3268	3576	Dekont.pdf.exe	88
PID 3576 wrote to memory of 3268	3576	Dekont.pdf.exe	88
PID 3576 wrote to memory of 3268	3576	Dekont.pdf.exe	88
PID 3468 wrote to memory of 2212	3468	Explorer.EXE	89
PID 3468 wrote to memory of 2212	3468	Explorer.EXE	89
PID 3468 wrote to memory of 2212	3468	Explorer.EXE	89
PID 2212 wrote to memory of 4176	2212	rundll32.exe	90
PID 2212 wrote to memory of 4176	2212	rundll32.exe	90
PID 2212 wrote to memory of 4176	2212	rundll32.exe	90

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:3468
- C:\Users\Admin\AppData\Local\Temp\Dekont.pdf.exe
  "C:\Users\Admin\AppData\Local\Temp\Dekont.pdf.exe"
  2⤵
  - Checks computer location settings
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3576
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\Dekont.pdf.exe"
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:5092
- - C:\Users\Admin\AppData\Local\Temp\Dekont.pdf.exe
    "C:\Users\Admin\AppData\Local\Temp\Dekont.pdf.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:3268
- 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:2212
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\Dekont.pdf.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:4176

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_kb1ep0ev.rln.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/2212-59-0x0000000000C60000-0x0000000000C74000-memory.dmp

Filesize
80KB

Download
memory/2212-61-0x0000000000C60000-0x0000000000C74000-memory.dmp

Filesize
80KB

Download
memory/2212-69-0x00000000007C0000-0x00000000007EF000-memory.dmp

Filesize
188KB

Download
memory/3268-11-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/3268-21-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/3268-22-0x0000000001210000-0x0000000001224000-memory.dmp

Filesize
80KB

Download
memory/3268-14-0x0000000001250000-0x000000000159A000-memory.dmp

Filesize
3.3MB

Download
memory/3468-23-0x0000000008580000-0x0000000008686000-memory.dmp

Filesize
1.0MB

Download
memory/3468-72-0x0000000008A00000-0x0000000008B7D000-memory.dmp

Filesize
1.5MB

Download
memory/3576-4-0x00000000055E0000-0x00000000055EA000-memory.dmp

Filesize
40KB

Download
memory/3576-10-0x0000000006D70000-0x0000000006E0C000-memory.dmp

Filesize
624KB

Download
memory/3576-13-0x0000000074F90000-0x0000000075740000-memory.dmp

Filesize
7.7MB

Download
memory/3576-9-0x0000000006B20000-0x0000000006B96000-memory.dmp

Filesize
472KB

Download
memory/3576-8-0x0000000074F90000-0x0000000075740000-memory.dmp

Filesize
7.7MB

Download
memory/3576-7-0x0000000074F9E000-0x0000000074F9F000-memory.dmp

Filesize
4KB

Download
memory/3576-6-0x0000000005700000-0x0000000005718000-memory.dmp

Filesize
96KB

Download
memory/3576-0-0x0000000074F9E000-0x0000000074F9F000-memory.dmp

Filesize
4KB

Download
memory/3576-5-0x0000000074F90000-0x0000000075740000-memory.dmp

Filesize
7.7MB

Download
memory/3576-3-0x0000000005430000-0x00000000054C2000-memory.dmp

Filesize
584KB

Download
memory/3576-2-0x0000000005900000-0x0000000005EA4000-memory.dmp

Filesize
5.6MB

Download
memory/3576-1-0x00000000009A0000-0x0000000000A44000-memory.dmp

Filesize
656KB

Download
memory/5092-18-0x0000000005B00000-0x0000000006128000-memory.dmp

Filesize
6.2MB

Download
memory/5092-54-0x0000000008220000-0x000000000889A000-memory.dmp

Filesize
6.5MB

Download
memory/5092-26-0x00000000059F0000-0x0000000005A56000-memory.dmp

Filesize
408KB

Download
memory/5092-25-0x0000000005980000-0x00000000059E6000-memory.dmp

Filesize
408KB

Download
memory/5092-32-0x0000000006270000-0x00000000065C4000-memory.dmp

Filesize
3.3MB

Download
memory/5092-37-0x00000000068B0000-0x00000000068CE000-memory.dmp

Filesize
120KB

Download
memory/5092-38-0x0000000006E40000-0x0000000006E8C000-memory.dmp

Filesize
304KB

Download
memory/5092-39-0x000000007EFA0000-0x000000007EFB0000-memory.dmp

Filesize
64KB

Download
memory/5092-40-0x0000000006E90000-0x0000000006EC2000-memory.dmp

Filesize
200KB

Download
memory/5092-41-0x0000000070E30000-0x0000000070E7C000-memory.dmp

Filesize
304KB

Download
memory/5092-51-0x00000000054C0000-0x00000000054D0000-memory.dmp

Filesize
64KB

Download
memory/5092-52-0x0000000006E10000-0x0000000006E2E000-memory.dmp

Filesize
120KB

Download
memory/5092-53-0x00000000078C0000-0x0000000007963000-memory.dmp

Filesize
652KB

Download
memory/5092-24-0x00000000058E0000-0x0000000005902000-memory.dmp

Filesize
136KB

Download
memory/5092-55-0x0000000007BD0000-0x0000000007BEA000-memory.dmp

Filesize
104KB

Download
memory/5092-56-0x0000000007C40000-0x0000000007C4A000-memory.dmp

Filesize
40KB

Download
memory/5092-57-0x0000000007E50000-0x0000000007EE6000-memory.dmp

Filesize
600KB

Download
memory/5092-58-0x0000000007DD0000-0x0000000007DE1000-memory.dmp

Filesize
68KB

Download
memory/5092-20-0x0000000075010000-0x00000000757C0000-memory.dmp

Filesize
7.7MB

Download
memory/5092-19-0x0000000075010000-0x00000000757C0000-memory.dmp

Filesize
7.7MB

Download
memory/5092-62-0x0000000007E00000-0x0000000007E0E000-memory.dmp

Filesize
56KB

Download
memory/5092-63-0x0000000007E10000-0x0000000007E24000-memory.dmp

Filesize
80KB

Download
memory/5092-64-0x0000000007F10000-0x0000000007F2A000-memory.dmp

Filesize
104KB

Download
memory/5092-65-0x0000000007EF0000-0x0000000007EF8000-memory.dmp

Filesize
32KB

Download
memory/5092-68-0x0000000075010000-0x00000000757C0000-memory.dmp

Filesize
7.7MB

Download
memory/5092-17-0x0000000002F80000-0x0000000002FB6000-memory.dmp

Filesize
216KB

Download
memory/5092-16-0x000000007501E000-0x000000007501F000-memory.dmp

Filesize
4KB

Download