formbook | c5a0052ac65201d36e99aa9719bb2daaae6d2faf98941a2b4f5c12a5946934ba

Analysis

max time kernel
149s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
02-12-2024 13:13

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General

Target

127.11.24_LicenciaParacancelacin-A1pgina-00020.docx.exe
Size

1.3MB
MD5

9dba20e8a9b2ba8aaa80da65d85daea4
SHA1

d652d051654c475c11f362104c80fb1a69ecd282
SHA256

c5a0052ac65201d36e99aa9719bb2daaae6d2faf98941a2b4f5c12a5946934ba
SHA512

b78411da91706f35af5d11d149ac0eecc1a7c6637e8c9567512c2cb510c5824e4a6a63b13838f6ad55e87df6a36391295b0f5e9a91982f37c967832ad0721ce4
SSDEEP

24576:vtb20pkaCqT5TBWgNQ7aFokJHs8qKo10IiGgvuP5Kg6A:sVg5tQ7aukJHtqKo10IiJv25

Score

10^/10

formbook ud04 discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

ud04

Decoy

oum7.pro

ovonordisk.online

akrzus.pro

tendmtedcpsa.site

mm.foo

animevyhgsft29817.click

digdxxb.info

1130.vip

uy-now-pay-later-74776.bond

ybzert.online

edcn.link

rime-flow-bay.xyz

nd777id.beauty

otoyama.shop

lranchomx.xyz

unluoren.top

uglesang-troms.net

udulbet88.net

raquewear.shop

ijanarko.net

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/1996-7-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/1996-10-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/4712-15-0x0000000001270000-0x000000000129F000-memory.dmp	formbook

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 3996 set thread context of 1996	3996	127.11.24_LicenciaParacancelacin-A1pgina-00020.docx.exe	82
PID 1996 set thread context of 3532	1996	svchost.exe	56
PID 4712 set thread context of 3532	4712	chkdsk.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	127.11.24_LicenciaParacancelacin-A1pgina-00020.docx.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	chkdsk.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	chkdsk.exe

Suspicious behavior: EnumeratesProcesses 62 IoCs

pid	Process
1996	svchost.exe
1996	svchost.exe
1996	svchost.exe
1996	svchost.exe
4712	chkdsk.exe
4712	chkdsk.exe
4712	chkdsk.exe
4712	chkdsk.exe
4712	chkdsk.exe
4712	chkdsk.exe
4712	chkdsk.exe
4712	chkdsk.exe
4712	chkdsk.exe
4712	chkdsk.exe
4712	chkdsk.exe
4712	chkdsk.exe
4712	chkdsk.exe
4712	chkdsk.exe
4712	chkdsk.exe
4712	chkdsk.exe
4712	chkdsk.exe
4712	chkdsk.exe
4712	chkdsk.exe
4712	chkdsk.exe
4712	chkdsk.exe
4712	chkdsk.exe
4712	chkdsk.exe
4712	chkdsk.exe
4712	chkdsk.exe
4712	chkdsk.exe
4712	chkdsk.exe
4712	chkdsk.exe
4712	chkdsk.exe
4712	chkdsk.exe
4712	chkdsk.exe
4712	chkdsk.exe
4712	chkdsk.exe
4712	chkdsk.exe
4712	chkdsk.exe
4712	chkdsk.exe
4712	chkdsk.exe
4712	chkdsk.exe
4712	chkdsk.exe
4712	chkdsk.exe
4712	chkdsk.exe
4712	chkdsk.exe
4712	chkdsk.exe
4712	chkdsk.exe
4712	chkdsk.exe
4712	chkdsk.exe
4712	chkdsk.exe
4712	chkdsk.exe
4712	chkdsk.exe
4712	chkdsk.exe
4712	chkdsk.exe
4712	chkdsk.exe
4712	chkdsk.exe
4712	chkdsk.exe
4712	chkdsk.exe
4712	chkdsk.exe
4712	chkdsk.exe
4712	chkdsk.exe

Suspicious behavior: MapViewOfSection 6 IoCs

pid	Process
3996	127.11.24_LicenciaParacancelacin-A1pgina-00020.docx.exe
1996	svchost.exe
1996	svchost.exe
1996	svchost.exe
4712	chkdsk.exe
4712	chkdsk.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1996	svchost.exe
Token: SeDebugPrivilege	4712	chkdsk.exe

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
3996	127.11.24_LicenciaParacancelacin-A1pgina-00020.docx.exe
3996	127.11.24_LicenciaParacancelacin-A1pgina-00020.docx.exe

Suspicious use of SendNotifyMessage 2 IoCs

pid	Process
3996	127.11.24_LicenciaParacancelacin-A1pgina-00020.docx.exe
3996	127.11.24_LicenciaParacancelacin-A1pgina-00020.docx.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 3996 wrote to memory of 1996	3996	127.11.24_LicenciaParacancelacin-A1pgina-00020.docx.exe	82
PID 3996 wrote to memory of 1996	3996	127.11.24_LicenciaParacancelacin-A1pgina-00020.docx.exe	82
PID 3996 wrote to memory of 1996	3996	127.11.24_LicenciaParacancelacin-A1pgina-00020.docx.exe	82
PID 3996 wrote to memory of 1996	3996	127.11.24_LicenciaParacancelacin-A1pgina-00020.docx.exe	82
PID 3532 wrote to memory of 4712	3532	Explorer.EXE	83
PID 3532 wrote to memory of 4712	3532	Explorer.EXE	83
PID 3532 wrote to memory of 4712	3532	Explorer.EXE	83
PID 4712 wrote to memory of 3060	4712	chkdsk.exe	84
PID 4712 wrote to memory of 3060	4712	chkdsk.exe	84
PID 4712 wrote to memory of 3060	4712	chkdsk.exe	84

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:3532
- C:\Users\Admin\AppData\Local\Temp\127.11.24_LicenciaParacancelacin-A1pgina-00020.docx.exe
  "C:\Users\Admin\AppData\Local\Temp\127.11.24_LicenciaParacancelacin-A1pgina-00020.docx.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:3996
- - C:\Windows\SysWOW64\svchost.exe
    "C:\Users\Admin\AppData\Local\Temp\127.11.24_LicenciaParacancelacin-A1pgina-00020.docx.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:1996
- C:\Windows\SysWOW64\chkdsk.exe
  "C:\Windows\SysWOW64\chkdsk.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Enumerates system info in registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4712
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Windows\SysWOW64\svchost.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:3060

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

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

Replay Monitor

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Downloads

memory/1996-7-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1996-8-0x0000000000E30000-0x000000000117A000-memory.dmp

Filesize
3.3MB

Download
memory/1996-11-0x0000000000DB0000-0x0000000000DC4000-memory.dmp

Filesize
80KB

Download
memory/1996-10-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/3532-12-0x0000000009020000-0x00000000091C6000-memory.dmp

Filesize
1.6MB

Download
memory/3532-19-0x0000000002870000-0x0000000002938000-memory.dmp

Filesize
800KB

Download
memory/3532-20-0x0000000002870000-0x0000000002938000-memory.dmp

Filesize
800KB

Download
memory/3532-22-0x0000000002870000-0x0000000002938000-memory.dmp

Filesize
800KB

Download
memory/3996-6-0x00000000014D0000-0x00000000018D0000-memory.dmp

Filesize
4.0MB

Download
memory/4712-13-0x0000000000EC0000-0x0000000000ECA000-memory.dmp

Filesize
40KB

Download
memory/4712-14-0x0000000000EC0000-0x0000000000ECA000-memory.dmp

Filesize
40KB

Download
memory/4712-15-0x0000000001270000-0x000000000129F000-memory.dmp

Filesize
188KB

Download