formbook | 874c6faee7e17445012c0f573c29dde997a71cc86e15fc3152a22365cf83bdf1

Analysis

max time kernel
149s
max time network
133s
platform
windows10-2004_x64
resource
win10v2004-20240910-en
resource tags

arch:x64arch:x86image:win10v2004-20240910-enlocale:en-usos:windows10-2004-x64system
submitted
26-09-2024 13:23

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General

Target

DOCPDF.exe
Size

597KB
MD5

debff2e29172e4c6b07a62a5d7b8a6b4
SHA1

6e2073a1f0dbd338f0a8673f35b8628581fac402
SHA256

874c6faee7e17445012c0f573c29dde997a71cc86e15fc3152a22365cf83bdf1
SHA512

565cccea3f2b0214e64e352a0676465c6b6792da5d7f77a9e97463c7ebb0fd8ab71baa835fa586268c425aa01577cf5ff5a3d7f652a9c1f6fb568757713b59f1
SSDEEP

12288:v0FSVDrE1Sytj7ueTw98NxmngEFTas9VdqJGQ/UUakA/k3Q8bQbZ:I1Sytj71LSdOqa4UakZTI

Score

10^/10

formbook b31a discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

b31a

Decoy

enjamin-paaac.buzz

mail-marketing-40950.bond

pusems28-post.cyou

hindo.top

ruck-company-be.today

asinos-deutschland.net

ewancash.boats

etdopovo.casino

rcher-saaac.buzz

871166.vip

manuel.app

g3yqo.shop

-9way.xyz

qawgytfexe.bond

iefi6834.vip

ental-health-35901.bond

idat-merkez18.top

rojectleadzone.website

lirudolph.top

migloballlc.online

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/2420-11-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/2420-16-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/4268-22-0x0000000000DA0000-0x0000000000DCF000-memory.dmp	formbook

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 968 set thread context of 2420	968	DOCPDF.exe	96
PID 2420 set thread context of 3480	2420	DOCPDF.exe	56
PID 4268 set thread context of 3480	4268	svchost.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	DOCPDF.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Modifies registry class 2 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2629364133-3182087385-364449604-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance\	Explorer.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{4336a54d-038b-4685-ab02-99bb52d3fb8b}\Instance\	Explorer.EXE

Suspicious behavior: EnumeratesProcesses 60 IoCs

pid	Process
968	DOCPDF.exe
968	DOCPDF.exe
2420	DOCPDF.exe
2420	DOCPDF.exe
2420	DOCPDF.exe
2420	DOCPDF.exe
4268	svchost.exe
4268	svchost.exe
4268	svchost.exe
4268	svchost.exe
4268	svchost.exe
4268	svchost.exe
4268	svchost.exe
4268	svchost.exe
4268	svchost.exe
4268	svchost.exe
4268	svchost.exe
4268	svchost.exe
4268	svchost.exe
4268	svchost.exe
4268	svchost.exe
4268	svchost.exe
4268	svchost.exe
4268	svchost.exe
4268	svchost.exe
4268	svchost.exe
4268	svchost.exe
4268	svchost.exe
4268	svchost.exe
4268	svchost.exe
4268	svchost.exe
4268	svchost.exe
4268	svchost.exe
4268	svchost.exe
4268	svchost.exe
4268	svchost.exe
4268	svchost.exe
4268	svchost.exe
4268	svchost.exe
4268	svchost.exe
4268	svchost.exe
4268	svchost.exe
4268	svchost.exe
4268	svchost.exe
4268	svchost.exe
4268	svchost.exe
4268	svchost.exe
4268	svchost.exe
4268	svchost.exe
4268	svchost.exe
4268	svchost.exe
4268	svchost.exe
4268	svchost.exe
4268	svchost.exe
4268	svchost.exe
4268	svchost.exe
4268	svchost.exe
4268	svchost.exe
4268	svchost.exe
4268	svchost.exe

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
2420	DOCPDF.exe
2420	DOCPDF.exe
2420	DOCPDF.exe
4268	svchost.exe
4268	svchost.exe

Suspicious use of AdjustPrivilegeToken 11 IoCs

description	pid	Process
Token: SeDebugPrivilege	968	DOCPDF.exe
Token: SeDebugPrivilege	2420	DOCPDF.exe
Token: SeDebugPrivilege	4268	svchost.exe
Token: SeShutdownPrivilege	3480	Explorer.EXE
Token: SeCreatePagefilePrivilege	3480	Explorer.EXE
Token: SeShutdownPrivilege	3480	Explorer.EXE
Token: SeCreatePagefilePrivilege	3480	Explorer.EXE
Token: SeShutdownPrivilege	3480	Explorer.EXE
Token: SeCreatePagefilePrivilege	3480	Explorer.EXE
Token: SeShutdownPrivilege	3480	Explorer.EXE
Token: SeCreatePagefilePrivilege	3480	Explorer.EXE

Suspicious use of UnmapMainImage 1 IoCs

pid	Process
3480	Explorer.EXE

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 968 wrote to memory of 2420	968	DOCPDF.exe	96
PID 968 wrote to memory of 2420	968	DOCPDF.exe	96
PID 968 wrote to memory of 2420	968	DOCPDF.exe	96
PID 968 wrote to memory of 2420	968	DOCPDF.exe	96
PID 968 wrote to memory of 2420	968	DOCPDF.exe	96
PID 968 wrote to memory of 2420	968	DOCPDF.exe	96
PID 3480 wrote to memory of 4268	3480	Explorer.EXE	97
PID 3480 wrote to memory of 4268	3480	Explorer.EXE	97
PID 3480 wrote to memory of 4268	3480	Explorer.EXE	97
PID 4268 wrote to memory of 4788	4268	svchost.exe	98
PID 4268 wrote to memory of 4788	4268	svchost.exe	98
PID 4268 wrote to memory of 4788	4268	svchost.exe	98

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:3480
- C:\Users\Admin\AppData\Local\Temp\DOCPDF.exe
  "C:\Users\Admin\AppData\Local\Temp\DOCPDF.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:968
- - C:\Users\Admin\AppData\Local\Temp\DOCPDF.exe
    "C:\Users\Admin\AppData\Local\Temp\DOCPDF.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:2420
- C:\Windows\SysWOW64\svchost.exe
  "C:\Windows\SysWOW64\svchost.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:4268
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\DOCPDF.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:4788

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/968-13-0x0000000074E20000-0x00000000755D0000-memory.dmp

Filesize
7.7MB

Download
memory/968-0-0x0000000074E2E000-0x0000000074E2F000-memory.dmp

Filesize
4KB

Download
memory/968-2-0x0000000005500000-0x0000000005AA4000-memory.dmp

Filesize
5.6MB

Download
memory/968-3-0x0000000004F50000-0x0000000004FE2000-memory.dmp

Filesize
584KB

Download
memory/968-4-0x0000000074E20000-0x00000000755D0000-memory.dmp

Filesize
7.7MB

Download
memory/968-5-0x0000000004EF0000-0x0000000004EFA000-memory.dmp

Filesize
40KB

Download
memory/968-6-0x00000000052B0000-0x00000000052C2000-memory.dmp

Filesize
72KB

Download
memory/968-7-0x0000000074E2E000-0x0000000074E2F000-memory.dmp

Filesize
4KB

Download
memory/968-8-0x0000000074E20000-0x00000000755D0000-memory.dmp

Filesize
7.7MB

Download
memory/968-9-0x0000000006350000-0x00000000063C6000-memory.dmp

Filesize
472KB

Download
memory/968-10-0x00000000092F0000-0x000000000938C000-memory.dmp

Filesize
624KB

Download
memory/968-1-0x0000000000590000-0x000000000062C000-memory.dmp

Filesize
624KB

Download
memory/2420-16-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2420-14-0x0000000001670000-0x00000000019BA000-memory.dmp

Filesize
3.3MB

Download
memory/2420-17-0x00000000011D0000-0x00000000011E4000-memory.dmp

Filesize
80KB

Download
memory/2420-11-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/3480-18-0x00000000046B0000-0x000000000479F000-memory.dmp

Filesize
956KB

Download
memory/3480-27-0x0000000008530000-0x0000000008628000-memory.dmp

Filesize
992KB

Download
memory/3480-23-0x00000000046B0000-0x000000000479F000-memory.dmp

Filesize
956KB

Download
memory/3480-28-0x0000000008530000-0x0000000008628000-memory.dmp

Filesize
992KB

Download
memory/3480-30-0x0000000008530000-0x0000000008628000-memory.dmp

Filesize
992KB

Download
memory/4268-19-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/4268-21-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/4268-22-0x0000000000DA0000-0x0000000000DCF000-memory.dmp

Filesize
188KB

Download