formbook | f35ae0455a4272eab2d20801b0aba6931e5d5d3f8eb5dd0e6d464d4300b10594

Analysis

max time kernel
146s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
08-11-2024 04:14

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General

Target

f35ae0455a4272eab2d20801b0aba6931e5d5d3f8eb5dd0e6d464d4300b10594.exe
Size

1.1MB
MD5

2066df5d5f8e2c7b31bc7c801e61b6ed
SHA1

9c767ae562dd7aecc81d97e1a9cb73c2373f73b4
SHA256

f35ae0455a4272eab2d20801b0aba6931e5d5d3f8eb5dd0e6d464d4300b10594
SHA512

4db60094570d82da05546708796f0bb341df8cbecce778032118fb4117f5df1144cc8f280b6e5fae9bd43221a07cfcfe292cb403e0cd1d94defa3ca23b4a4029
SSDEEP

24576:uRmJkcoQricOIQxiZY1iaCQuuWqBcs33xaF/iAoRQtmyGb5:7JZoQrbTFZY1iaCQuuhx3xaFzoRQtlGl

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/1900-3-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/1900-6-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/4136-11-0x0000000000310000-0x000000000033F000-memory.dmp	formbook

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2156 set thread context of 1900	2156	f35ae0455a4272eab2d20801b0aba6931e5d5d3f8eb5dd0e6d464d4300b10594.exe	85
PID 1900 set thread context of 3416	1900	svchost.exe	56
PID 4136 set thread context of 3416	4136	systray.exe	56

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

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	f35ae0455a4272eab2d20801b0aba6931e5d5d3f8eb5dd0e6d464d4300b10594.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	systray.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
1900	svchost.exe
1900	svchost.exe
1900	svchost.exe
1900	svchost.exe
4136	systray.exe
4136	systray.exe
4136	systray.exe
4136	systray.exe
4136	systray.exe
4136	systray.exe
4136	systray.exe
4136	systray.exe
4136	systray.exe
4136	systray.exe
4136	systray.exe
4136	systray.exe
4136	systray.exe
4136	systray.exe
4136	systray.exe
4136	systray.exe
4136	systray.exe
4136	systray.exe
4136	systray.exe
4136	systray.exe
4136	systray.exe
4136	systray.exe
4136	systray.exe
4136	systray.exe
4136	systray.exe
4136	systray.exe
4136	systray.exe
4136	systray.exe
4136	systray.exe
4136	systray.exe
4136	systray.exe
4136	systray.exe
4136	systray.exe
4136	systray.exe
4136	systray.exe
4136	systray.exe
4136	systray.exe
4136	systray.exe
4136	systray.exe
4136	systray.exe
4136	systray.exe
4136	systray.exe
4136	systray.exe
4136	systray.exe
4136	systray.exe
4136	systray.exe
4136	systray.exe
4136	systray.exe
4136	systray.exe
4136	systray.exe
4136	systray.exe
4136	systray.exe
4136	systray.exe
4136	systray.exe
4136	systray.exe
4136	systray.exe
4136	systray.exe
4136	systray.exe

Suspicious behavior: MapViewOfSection 6 IoCs

pid	Process
2156	f35ae0455a4272eab2d20801b0aba6931e5d5d3f8eb5dd0e6d464d4300b10594.exe
1900	svchost.exe
1900	svchost.exe
1900	svchost.exe
4136	systray.exe
4136	systray.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	1900	svchost.exe
Token: SeShutdownPrivilege	3416	Explorer.EXE
Token: SeCreatePagefilePrivilege	3416	Explorer.EXE
Token: SeShutdownPrivilege	3416	Explorer.EXE
Token: SeCreatePagefilePrivilege	3416	Explorer.EXE
Token: SeDebugPrivilege	4136	systray.exe

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
3416	Explorer.EXE
3416	Explorer.EXE

Suspicious use of UnmapMainImage 1 IoCs

pid	Process
3416	Explorer.EXE

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 2156 wrote to memory of 1900	2156	f35ae0455a4272eab2d20801b0aba6931e5d5d3f8eb5dd0e6d464d4300b10594.exe	85
PID 2156 wrote to memory of 1900	2156	f35ae0455a4272eab2d20801b0aba6931e5d5d3f8eb5dd0e6d464d4300b10594.exe	85
PID 2156 wrote to memory of 1900	2156	f35ae0455a4272eab2d20801b0aba6931e5d5d3f8eb5dd0e6d464d4300b10594.exe	85
PID 2156 wrote to memory of 1900	2156	f35ae0455a4272eab2d20801b0aba6931e5d5d3f8eb5dd0e6d464d4300b10594.exe	85
PID 3416 wrote to memory of 4136	3416	Explorer.EXE	86
PID 3416 wrote to memory of 4136	3416	Explorer.EXE	86
PID 3416 wrote to memory of 4136	3416	Explorer.EXE	86
PID 4136 wrote to memory of 3884	4136	systray.exe	95
PID 4136 wrote to memory of 3884	4136	systray.exe	95
PID 4136 wrote to memory of 3884	4136	systray.exe	95

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:3416
- C:\Users\Admin\AppData\Local\Temp\f35ae0455a4272eab2d20801b0aba6931e5d5d3f8eb5dd0e6d464d4300b10594.exe
  "C:\Users\Admin\AppData\Local\Temp\f35ae0455a4272eab2d20801b0aba6931e5d5d3f8eb5dd0e6d464d4300b10594.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:2156
- - C:\Windows\SysWOW64\svchost.exe
    "C:\Users\Admin\AppData\Local\Temp\f35ae0455a4272eab2d20801b0aba6931e5d5d3f8eb5dd0e6d464d4300b10594.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:1900
- C:\Windows\SysWOW64\systray.exe
  "C:\Windows\SysWOW64\systray.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:4136
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Windows\SysWOW64\svchost.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:3884

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

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/1900-3-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1900-4-0x0000000001C00000-0x0000000001F4A000-memory.dmp

Filesize
3.3MB

Download
memory/1900-7-0x00000000021D0000-0x00000000021E4000-memory.dmp

Filesize
80KB

Download
memory/1900-6-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2156-2-0x0000000004070000-0x0000000004270000-memory.dmp

Filesize
2.0MB

Download
memory/3416-12-0x0000000003460000-0x00000000035D3000-memory.dmp

Filesize
1.4MB

Download
memory/3416-8-0x0000000003460000-0x00000000035D3000-memory.dmp

Filesize
1.4MB

Download
memory/3416-16-0x00000000095E0000-0x00000000096EB000-memory.dmp

Filesize
1.0MB

Download
memory/3416-17-0x00000000095E0000-0x00000000096EB000-memory.dmp

Filesize
1.0MB

Download
memory/3416-19-0x00000000095E0000-0x00000000096EB000-memory.dmp

Filesize
1.0MB

Download
memory/4136-10-0x0000000000550000-0x0000000000556000-memory.dmp

Filesize
24KB

Download
memory/4136-9-0x0000000000550000-0x0000000000556000-memory.dmp

Filesize
24KB

Download
memory/4136-11-0x0000000000310000-0x000000000033F000-memory.dmp

Filesize
188KB

Download