formbook | ab5eaba420eece3d4db60eadc4c2b198933a547479ce84a5903c9c9b0a025543

General

Target

DHL Invoice Notification_pdf.exe
Size

942KB
MD5

80e47f3442ed4e19c8660dbdf9033e11
SHA1

928b5e116468baeecba928ddbc1de8011121b129
SHA256

6bf26b1eb1db8cdd96264df57faaed3eca70f6c01b592324e4b7939b0818e180
SHA512

ba0107f896b6bd9518e5c1b85b191b19efb5722b842babff3937800bb9d404d0d4910bd2474459af38c9065d4ad8123a7582db8e1eec537f5e67122c31c94634
SSDEEP

12288:KhLuyAHQYVo02R34K49um4VV3eI+MOC6DyP3sy5l2qWR87sewhIesI:KhLuyy7VF2R5w5WKDYj2qWRuvwhl

Score

10^/10

formbook ko29 discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

ko29

Decoy

citusdig.site

ecomrise.store

aringtonortho.com

plan-indonesia.com

retreat-to-the-alps.com

themerchperch.biz

freshfashiondesign.com

zachmizrachi.com

machomancoin.site

racunhariini.com

13378888.com

landofnd.com

techactive.digital

yourdebttips.com

www147171.com

xraino.top

willshouseofhorrors.com

redfiree.com

cyanband.com

srbs35.com

Signatures

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

Formbook payload 3 IoCs

rat

resource	yara_rule
behavioral2/memory/3588-16-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/3588-21-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/432-27-0x0000000000750000-0x000000000077F000-memory.dmp	formbook

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2820 set thread context of 3588	2820	DHL Invoice Notification_pdf.exe	91
PID 3588 set thread context of 3440	3588	DHL Invoice Notification_pdf.exe	56
PID 432 set thread context of 3440	432	cmd.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	DHL Invoice Notification_pdf.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious behavior: EnumeratesProcesses 46 IoCs

pid	Process
3588	DHL Invoice Notification_pdf.exe
3588	DHL Invoice Notification_pdf.exe
3588	DHL Invoice Notification_pdf.exe
3588	DHL Invoice Notification_pdf.exe
432	cmd.exe
432	cmd.exe
432	cmd.exe
432	cmd.exe
432	cmd.exe
432	cmd.exe
432	cmd.exe
432	cmd.exe
432	cmd.exe
432	cmd.exe
432	cmd.exe
432	cmd.exe
432	cmd.exe
432	cmd.exe
432	cmd.exe
432	cmd.exe
432	cmd.exe
432	cmd.exe
432	cmd.exe
432	cmd.exe
432	cmd.exe
432	cmd.exe
432	cmd.exe
432	cmd.exe
432	cmd.exe
432	cmd.exe
432	cmd.exe
432	cmd.exe
432	cmd.exe
432	cmd.exe
432	cmd.exe
432	cmd.exe
432	cmd.exe
432	cmd.exe
432	cmd.exe
432	cmd.exe
432	cmd.exe
432	cmd.exe
432	cmd.exe
432	cmd.exe
432	cmd.exe
432	cmd.exe

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
3588	DHL Invoice Notification_pdf.exe
3588	DHL Invoice Notification_pdf.exe
3588	DHL Invoice Notification_pdf.exe
432	cmd.exe
432	cmd.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3588	DHL Invoice Notification_pdf.exe
Token: SeDebugPrivilege	432	cmd.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2820 wrote to memory of 3588	2820	DHL Invoice Notification_pdf.exe	91
PID 2820 wrote to memory of 3588	2820	DHL Invoice Notification_pdf.exe	91
PID 2820 wrote to memory of 3588	2820	DHL Invoice Notification_pdf.exe	91
PID 2820 wrote to memory of 3588	2820	DHL Invoice Notification_pdf.exe	91
PID 2820 wrote to memory of 3588	2820	DHL Invoice Notification_pdf.exe	91
PID 2820 wrote to memory of 3588	2820	DHL Invoice Notification_pdf.exe	91
PID 3440 wrote to memory of 432	3440	Explorer.EXE	92
PID 3440 wrote to memory of 432	3440	Explorer.EXE	92
PID 3440 wrote to memory of 432	3440	Explorer.EXE	92
PID 432 wrote to memory of 4548	432	cmd.exe	93
PID 432 wrote to memory of 4548	432	cmd.exe	93
PID 432 wrote to memory of 4548	432	cmd.exe	93

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:3440
- C:\Users\Admin\AppData\Local\Temp\DHL Invoice Notification_pdf.exe
  "C:\Users\Admin\AppData\Local\Temp\DHL Invoice Notification_pdf.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2820
- - C:\Users\Admin\AppData\Local\Temp\DHL Invoice Notification_pdf.exe
    "C:\Users\Admin\AppData\Local\Temp\DHL Invoice Notification_pdf.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:3588
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\SysWOW64\cmd.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:432
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\DHL Invoice Notification_pdf.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:4548

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/432-26-0x0000000000EA0000-0x0000000000EFA000-memory.dmp

Filesize
360KB

Download
memory/432-27-0x0000000000750000-0x000000000077F000-memory.dmp

Filesize
188KB

Download
memory/432-24-0x0000000000EA0000-0x0000000000EFA000-memory.dmp

Filesize
360KB

Download
memory/2820-14-0x0000000008320000-0x0000000008386000-memory.dmp

Filesize
408KB

Download
memory/2820-3-0x0000000004E20000-0x0000000004EB2000-memory.dmp

Filesize
584KB

Download
memory/2820-5-0x0000000074AD0000-0x0000000075280000-memory.dmp

Filesize
7.7MB

Download
memory/2820-6-0x0000000005040000-0x000000000504A000-memory.dmp

Filesize
40KB

Download
memory/2820-7-0x00000000053C0000-0x00000000053D4000-memory.dmp

Filesize
80KB

Download
memory/2820-8-0x0000000007C30000-0x0000000007C44000-memory.dmp

Filesize
80KB

Download
memory/2820-9-0x0000000074ADE000-0x0000000074ADF000-memory.dmp

Filesize
4KB

Download
memory/2820-10-0x0000000074AD0000-0x0000000075280000-memory.dmp

Filesize
7.7MB

Download
memory/2820-11-0x0000000007BB0000-0x0000000007BBC000-memory.dmp

Filesize
48KB

Download
memory/2820-12-0x0000000008140000-0x00000000081E6000-memory.dmp

Filesize
664KB

Download
memory/2820-13-0x0000000008280000-0x000000000831C000-memory.dmp

Filesize
624KB

Download
memory/2820-0-0x0000000074ADE000-0x0000000074ADF000-memory.dmp

Filesize
4KB

Download
memory/2820-15-0x00000000081E0000-0x000000000822E000-memory.dmp

Filesize
312KB

Download
memory/2820-1-0x00000000002D0000-0x00000000003C2000-memory.dmp

Filesize
968KB

Download
memory/2820-18-0x0000000074AD0000-0x0000000075280000-memory.dmp

Filesize
7.7MB

Download
memory/2820-2-0x00000000053D0000-0x0000000005974000-memory.dmp

Filesize
5.6MB

Download
memory/2820-4-0x0000000005980000-0x0000000005CD4000-memory.dmp

Filesize
3.3MB

Download
memory/3440-23-0x0000000008C70000-0x0000000008D91000-memory.dmp

Filesize
1.1MB

Download
memory/3440-28-0x0000000008C70000-0x0000000008D91000-memory.dmp

Filesize
1.1MB

Download
memory/3440-32-0x0000000002A70000-0x0000000002B68000-memory.dmp

Filesize
992KB

Download
memory/3440-33-0x0000000002A70000-0x0000000002B68000-memory.dmp

Filesize
992KB

Download
memory/3440-35-0x0000000002A70000-0x0000000002B68000-memory.dmp

Filesize
992KB

Download
memory/3588-21-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/3588-22-0x0000000001370000-0x0000000001384000-memory.dmp

Filesize
80KB

Download
memory/3588-19-0x00000000018C0000-0x0000000001C0A000-memory.dmp

Filesize
3.3MB

Download
memory/3588-16-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download

Analysis

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