formbook | b4682bd19ad6e524089a166d84401e2bdf904bfeb9d66f96c2d2dc1934fa30e4

Analysis

max time kernel
149s
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
05-02-2025 04:09

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General

Target

PO00299436 pdf.exe
Size

1.0MB
MD5

81058dec298cc79bdfbc425b81c83ac4
SHA1

638571e70a20101132659469f2e859db6fc3674b
SHA256

2f821a2fe9c043b3d733b026c68f56b48ec6dedeb63518590fdcbec615b7919b
SHA512

895471a1cd02853f7967942771aec0396802a183f565d0c2bd1e3a285c34c54672d72f8667cf7a27e558e9fa5489903924294bde2104f6fa9d5ad480286b592d
SSDEEP

24576:iAHnh+eWsN3skA4RV1Hom2KXFmIafhOdUYbs5:lh+ZkldoPK1Xafkddm

Score

10^/10

formbook a38m discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

a38m

Decoy

rtfosters.net

ental-implants-97548.bond

raphic-design-degree-15820.bond

ompraninjas.shop

indmyusedcar.today

rumptraumasupport.net

uozwear.xyz

etron.xyz

dultlivebroadcast09.today

ypegen.net

arehouse-inventory-54057.bond

27961.pizza

ortable-ai.xyz

pioxc.xyz

nline-advertising-76059.bond

rendyshack.store

pa-services88.life

aftarpragmatic218gacor.online

yb1054.shop

8x189.xyz

Signatures

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

Formbook payload 4 IoCs

rat

resource	yara_rule
behavioral2/memory/3376-12-0x0000000000440000-0x000000000046F000-memory.dmp	formbook
behavioral2/memory/3376-16-0x0000000000440000-0x000000000046F000-memory.dmp	formbook
behavioral2/memory/3376-20-0x0000000000440000-0x000000000046F000-memory.dmp	formbook
behavioral2/memory/4888-25-0x0000000000380000-0x00000000003AF000-memory.dmp	formbook

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 5100 set thread context of 3376	5100	PO00299436 pdf.exe	82
PID 3376 set thread context of 3416	3376	svchost.exe	56
PID 3376 set thread context of 3416	3376	svchost.exe	56
PID 4888 set thread context of 3416	4888	help.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	PO00299436 pdf.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	help.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious behavior: EnumeratesProcesses 62 IoCs

pid	Process
3376	svchost.exe
3376	svchost.exe
3376	svchost.exe
3376	svchost.exe
3376	svchost.exe
3376	svchost.exe
4888	help.exe
4888	help.exe
4888	help.exe
4888	help.exe
4888	help.exe
4888	help.exe
4888	help.exe
4888	help.exe
4888	help.exe
4888	help.exe
4888	help.exe
4888	help.exe
4888	help.exe
4888	help.exe
4888	help.exe
4888	help.exe
4888	help.exe
4888	help.exe
4888	help.exe
4888	help.exe
4888	help.exe
4888	help.exe
4888	help.exe
4888	help.exe
4888	help.exe
4888	help.exe
4888	help.exe
4888	help.exe
4888	help.exe
4888	help.exe
4888	help.exe
4888	help.exe
4888	help.exe
4888	help.exe
4888	help.exe
4888	help.exe
4888	help.exe
4888	help.exe
4888	help.exe
4888	help.exe
4888	help.exe
4888	help.exe
4888	help.exe
4888	help.exe
4888	help.exe
4888	help.exe
4888	help.exe
4888	help.exe
4888	help.exe
4888	help.exe
4888	help.exe
4888	help.exe
4888	help.exe
4888	help.exe
4888	help.exe
4888	help.exe

Suspicious behavior: MapViewOfSection 8 IoCs

pid	Process
5100	PO00299436 pdf.exe
5100	PO00299436 pdf.exe
3376	svchost.exe
3376	svchost.exe
3376	svchost.exe
3376	svchost.exe
4888	help.exe
4888	help.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3376	svchost.exe
Token: SeDebugPrivilege	4888	help.exe

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
5100	PO00299436 pdf.exe
5100	PO00299436 pdf.exe

Suspicious use of SendNotifyMessage 2 IoCs

pid	Process
5100	PO00299436 pdf.exe
5100	PO00299436 pdf.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 5100 wrote to memory of 3376	5100	PO00299436 pdf.exe	82
PID 5100 wrote to memory of 3376	5100	PO00299436 pdf.exe	82
PID 5100 wrote to memory of 3376	5100	PO00299436 pdf.exe	82
PID 5100 wrote to memory of 3376	5100	PO00299436 pdf.exe	82
PID 3416 wrote to memory of 4888	3416	Explorer.EXE	87
PID 3416 wrote to memory of 4888	3416	Explorer.EXE	87
PID 3416 wrote to memory of 4888	3416	Explorer.EXE	87
PID 4888 wrote to memory of 1556	4888	help.exe	89
PID 4888 wrote to memory of 1556	4888	help.exe	89
PID 4888 wrote to memory of 1556	4888	help.exe	89

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:3416
- C:\Users\Admin\AppData\Local\Temp\PO00299436 pdf.exe
  "C:\Users\Admin\AppData\Local\Temp\PO00299436 pdf.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of WriteProcessMemory
  PID:5100
- - C:\Windows\SysWOW64\svchost.exe
    "C:\Users\Admin\AppData\Local\Temp\PO00299436 pdf.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:3376
- C:\Windows\SysWOW64\help.exe
  "C:\Windows\SysWOW64\help.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:4888
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Windows\SysWOW64\svchost.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:1556

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/3376-21-0x0000000002C90000-0x0000000002CA4000-memory.dmp

Filesize
80KB

Download
memory/3376-12-0x0000000000440000-0x000000000046F000-memory.dmp

Filesize
188KB

Download
memory/3376-15-0x0000000000E00000-0x000000000114A000-memory.dmp

Filesize
3.3MB

Download
memory/3376-20-0x0000000000440000-0x000000000046F000-memory.dmp

Filesize
188KB

Download
memory/3376-17-0x0000000000B80000-0x0000000000B94000-memory.dmp

Filesize
80KB

Download
memory/3376-16-0x0000000000440000-0x000000000046F000-memory.dmp

Filesize
188KB

Download
memory/3416-22-0x0000000007F50000-0x00000000080BE000-memory.dmp

Filesize
1.4MB

Download
memory/3416-18-0x00000000028D0000-0x00000000029F5000-memory.dmp

Filesize
1.1MB

Download
memory/3416-26-0x0000000007F50000-0x00000000080BE000-memory.dmp

Filesize
1.4MB

Download
memory/3416-29-0x00000000080C0000-0x00000000081F1000-memory.dmp

Filesize
1.2MB

Download
memory/3416-30-0x00000000080C0000-0x00000000081F1000-memory.dmp

Filesize
1.2MB

Download
memory/3416-32-0x00000000080C0000-0x00000000081F1000-memory.dmp

Filesize
1.2MB

Download
memory/4888-24-0x0000000000B60000-0x0000000000B67000-memory.dmp

Filesize
28KB

Download
memory/4888-23-0x0000000000B60000-0x0000000000B67000-memory.dmp

Filesize
28KB

Download
memory/4888-25-0x0000000000380000-0x00000000003AF000-memory.dmp

Filesize
188KB

Download
memory/5100-11-0x0000000001610000-0x0000000001A10000-memory.dmp

Filesize
4.0MB

Download