formbook | 2e3fefb790f0aba5b0e8162081c037ed5035c2722fd318d928d94cfee57d110c

Analysis

max time kernel
149s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
19-11-2024 08:02

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General

Target

list nr 001110_51_2024-11-19_134943.docx.exe
Size

1.1MB
MD5

d793f4c36efc6d1830d698bab09b6845
SHA1

a81f6231571c4c63bf68e7829ab4abd4e3d0f41b
SHA256

2e3fefb790f0aba5b0e8162081c037ed5035c2722fd318d928d94cfee57d110c
SHA512

330ca2821d1c0fbc535dfc2f8bf347f0c884d0f3c55b743c5fba91dee4c257b571a8883081283eafff6314283d7935e6a88d8a98f5b488d442650055520b758a
SSDEEP

24576:/tb20pkaCqT5TBWgNQ7aV49Wi6IksKhhr6A:8Vg5tQ7aV2Wi/w5

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 4 IoCs

rat

resource	yara_rule
behavioral2/memory/2320-7-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/2320-10-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/2320-14-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/3964-21-0x0000000000550000-0x000000000057F000-memory.dmp	formbook

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 3084 set thread context of 2320	3084	list nr 001110_51_2024-11-19_134943.docx.exe	86
PID 2320 set thread context of 3352	2320	svchost.exe	56
PID 2320 set thread context of 3352	2320	svchost.exe	56
PID 3964 set thread context of 3352	3964	mstsc.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	list nr 001110_51_2024-11-19_134943.docx.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mstsc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	Explorer.EXE

Suspicious behavior: EnumeratesProcesses 62 IoCs

pid	Process
2320	svchost.exe
2320	svchost.exe
2320	svchost.exe
2320	svchost.exe
2320	svchost.exe
2320	svchost.exe
3964	mstsc.exe
3964	mstsc.exe
3964	mstsc.exe
3964	mstsc.exe
3964	mstsc.exe
3964	mstsc.exe
3964	mstsc.exe
3964	mstsc.exe
3964	mstsc.exe
3964	mstsc.exe
3964	mstsc.exe
3964	mstsc.exe
3964	mstsc.exe
3964	mstsc.exe
3964	mstsc.exe
3964	mstsc.exe
3964	mstsc.exe
3964	mstsc.exe
3964	mstsc.exe
3964	mstsc.exe
3964	mstsc.exe
3964	mstsc.exe
3964	mstsc.exe
3964	mstsc.exe
3964	mstsc.exe
3964	mstsc.exe
3964	mstsc.exe
3964	mstsc.exe
3964	mstsc.exe
3964	mstsc.exe
3964	mstsc.exe
3964	mstsc.exe
3964	mstsc.exe
3964	mstsc.exe
3964	mstsc.exe
3964	mstsc.exe
3964	mstsc.exe
3964	mstsc.exe
3964	mstsc.exe
3964	mstsc.exe
3964	mstsc.exe
3964	mstsc.exe
3964	mstsc.exe
3964	mstsc.exe
3964	mstsc.exe
3964	mstsc.exe
3964	mstsc.exe
3964	mstsc.exe
3964	mstsc.exe
3964	mstsc.exe
3964	mstsc.exe
3964	mstsc.exe
3964	mstsc.exe
3964	mstsc.exe
3964	mstsc.exe
3964	mstsc.exe

Suspicious behavior: MapViewOfSection 7 IoCs

pid	Process
3084	list nr 001110_51_2024-11-19_134943.docx.exe
2320	svchost.exe
2320	svchost.exe
2320	svchost.exe
2320	svchost.exe
3964	mstsc.exe
3964	mstsc.exe

Suspicious use of AdjustPrivilegeToken 14 IoCs

description	pid	Process
Token: SeDebugPrivilege	2320	svchost.exe
Token: SeShutdownPrivilege	3352	Explorer.EXE
Token: SeCreatePagefilePrivilege	3352	Explorer.EXE
Token: SeShutdownPrivilege	3352	Explorer.EXE
Token: SeCreatePagefilePrivilege	3352	Explorer.EXE
Token: SeShutdownPrivilege	3352	Explorer.EXE
Token: SeCreatePagefilePrivilege	3352	Explorer.EXE
Token: SeShutdownPrivilege	3352	Explorer.EXE
Token: SeCreatePagefilePrivilege	3352	Explorer.EXE
Token: SeShutdownPrivilege	3352	Explorer.EXE
Token: SeCreatePagefilePrivilege	3352	Explorer.EXE
Token: SeShutdownPrivilege	3352	Explorer.EXE
Token: SeCreatePagefilePrivilege	3352	Explorer.EXE
Token: SeDebugPrivilege	3964	mstsc.exe

Suspicious use of FindShellTrayWindow 4 IoCs

pid	Process
3084	list nr 001110_51_2024-11-19_134943.docx.exe
3084	list nr 001110_51_2024-11-19_134943.docx.exe
3352	Explorer.EXE
3352	Explorer.EXE

Suspicious use of SendNotifyMessage 2 IoCs

pid	Process
3084	list nr 001110_51_2024-11-19_134943.docx.exe
3084	list nr 001110_51_2024-11-19_134943.docx.exe

Suspicious use of UnmapMainImage 1 IoCs

pid	Process
3352	Explorer.EXE

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 3084 wrote to memory of 2320	3084	list nr 001110_51_2024-11-19_134943.docx.exe	86
PID 3084 wrote to memory of 2320	3084	list nr 001110_51_2024-11-19_134943.docx.exe	86
PID 3084 wrote to memory of 2320	3084	list nr 001110_51_2024-11-19_134943.docx.exe	86
PID 3084 wrote to memory of 2320	3084	list nr 001110_51_2024-11-19_134943.docx.exe	86
PID 3352 wrote to memory of 3964	3352	Explorer.EXE	93
PID 3352 wrote to memory of 3964	3352	Explorer.EXE	93
PID 3352 wrote to memory of 3964	3352	Explorer.EXE	93
PID 3964 wrote to memory of 5024	3964	mstsc.exe	96
PID 3964 wrote to memory of 5024	3964	mstsc.exe	96
PID 3964 wrote to memory of 5024	3964	mstsc.exe	96

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:3352
- C:\Users\Admin\AppData\Local\Temp\list nr 001110_51_2024-11-19_134943.docx.exe
  "C:\Users\Admin\AppData\Local\Temp\list nr 001110_51_2024-11-19_134943.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:3084
- - C:\Windows\SysWOW64\svchost.exe
    "C:\Users\Admin\AppData\Local\Temp\list nr 001110_51_2024-11-19_134943.docx.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:2320
- C:\Windows\SysWOW64\mstsc.exe
  "C:\Windows\SysWOW64\mstsc.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:3964
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Windows\SysWOW64\svchost.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:5024

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/2320-14-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2320-8-0x0000000001600000-0x000000000194A000-memory.dmp

Filesize
3.3MB

Download
memory/2320-11-0x0000000001AB0000-0x0000000001AC4000-memory.dmp

Filesize
80KB

Download
memory/2320-15-0x0000000003400000-0x0000000003414000-memory.dmp

Filesize
80KB

Download
memory/2320-7-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2320-10-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/3084-6-0x00000000016C0000-0x0000000001AC0000-memory.dmp

Filesize
4.0MB

Download
memory/3352-12-0x0000000008880000-0x00000000089BC000-memory.dmp

Filesize
1.2MB

Download
memory/3352-16-0x0000000008E10000-0x0000000008F37000-memory.dmp

Filesize
1.2MB

Download
memory/3352-17-0x0000000008880000-0x00000000089BC000-memory.dmp

Filesize
1.2MB

Download
memory/3352-22-0x0000000008E10000-0x0000000008F37000-memory.dmp

Filesize
1.2MB

Download
memory/3352-25-0x0000000009540000-0x0000000009665000-memory.dmp

Filesize
1.1MB

Download
memory/3352-26-0x0000000009540000-0x0000000009665000-memory.dmp

Filesize
1.1MB

Download
memory/3352-28-0x0000000009540000-0x0000000009665000-memory.dmp

Filesize
1.1MB

Download
memory/3964-18-0x00000000003B0000-0x00000000004EA000-memory.dmp

Filesize
1.2MB

Download
memory/3964-20-0x00000000003B0000-0x00000000004EA000-memory.dmp

Filesize
1.2MB

Download
memory/3964-21-0x0000000000550000-0x000000000057F000-memory.dmp

Filesize
188KB

Download