formbook | 6c875de6251ce65b8eea5f3c0583178cbeefb44393f164bd5c0a59473f14f431

Analysis

max time kernel
147s
max time network
143s
platform
windows10-2004_x64
resource
win10v2004-20250314-en
resource tags

arch:x64arch:x86image:win10v2004-20250314-enlocale:en-usos:windows10-2004-x64system
submitted
26/03/2025, 09:54

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General

Target

PL143_1400277334_2025032512033713_213128_00001..exe
Size

1.0MB
MD5

5f4861781f0ec977e51a8a86349c6f8b
SHA1

0565c7b0f212bddf7a379aaa6e9735eb1167dd57
SHA256

7e0b58f853b79da8504e524932bd2bfd5aabd42bd82f5f787176a615b45ffe22
SHA512

28a2c135f06bcb11fb48611aa2dbb5d5ef0aea61b6ba6f2da8bcfc892f0f91c86cefa776eb599d2bc16b317cde282baa84862c32ee54398aa9d8ba9cef9cc99a
SSDEEP

24576:lu6J33O0c+JY5UZ+XC0kGso6Faw/itkLQS49GSLwxS84WY:nu0c++OCvkGs9Faw/rf4AimSiY

Score

10^/10

formbook u021 discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

u021

Decoy

pidersandsparrowsgroup.info

hatgptstrategies.net

anashekwrites.net

uskomaras-gyor.net

s2ega.live

heap-flights-1466962.fyi

ersondigital.shop

omaine-videlot.net

mbeddedcopilot.xyz

tp-jos178-a2.online

estaking888.xyz

uantumnovamind.pro

ugmentedmap.xyz

ucky-win-spin.xyz

bytxop.online

nnovativeworld.cyou

f.delivery

lp.cash

y-marketing-chef.online

illionblocks.xyz

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/2828-7-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/2828-10-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/3624-16-0x0000000000CC0000-0x0000000000CEF000-memory.dmp	formbook

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2944 set thread context of 2828	2944	PL143_1400277334_2025032512033713_213128_00001..exe	91
PID 2828 set thread context of 3440	2828	svchost.exe	56
PID 3624 set thread context of 3440	3624	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	PL143_1400277334_2025032512033713_213128_00001..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 2 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-308834014-1004923324-1191300197-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance\	Explorer.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{4336a54d-038b-4685-ab02-99bb52d3fb8b}\Instance\	Explorer.EXE

Suspicious behavior: EnumeratesProcesses 62 IoCs

pid	Process
2828	svchost.exe
2828	svchost.exe
2828	svchost.exe
2828	svchost.exe
3624	mstsc.exe
3624	mstsc.exe
3624	mstsc.exe
3624	mstsc.exe
3624	mstsc.exe
3624	mstsc.exe
3624	mstsc.exe
3624	mstsc.exe
3624	mstsc.exe
3624	mstsc.exe
3624	mstsc.exe
3624	mstsc.exe
3624	mstsc.exe
3624	mstsc.exe
3624	mstsc.exe
3624	mstsc.exe
3624	mstsc.exe
3624	mstsc.exe
3624	mstsc.exe
3624	mstsc.exe
3624	mstsc.exe
3624	mstsc.exe
3624	mstsc.exe
3624	mstsc.exe
3624	mstsc.exe
3624	mstsc.exe
3624	mstsc.exe
3624	mstsc.exe
3624	mstsc.exe
3624	mstsc.exe
3624	mstsc.exe
3624	mstsc.exe
3624	mstsc.exe
3624	mstsc.exe
3624	mstsc.exe
3624	mstsc.exe
3624	mstsc.exe
3624	mstsc.exe
3624	mstsc.exe
3624	mstsc.exe
3624	mstsc.exe
3624	mstsc.exe
3624	mstsc.exe
3624	mstsc.exe
3624	mstsc.exe
3624	mstsc.exe
3624	mstsc.exe
3624	mstsc.exe
3624	mstsc.exe
3624	mstsc.exe
3624	mstsc.exe
3624	mstsc.exe
3624	mstsc.exe
3624	mstsc.exe
3624	mstsc.exe
3624	mstsc.exe
3624	mstsc.exe
3624	mstsc.exe

Suspicious behavior: MapViewOfSection 6 IoCs

pid	Process
2944	PL143_1400277334_2025032512033713_213128_00001..exe
2828	svchost.exe
2828	svchost.exe
2828	svchost.exe
3624	mstsc.exe
3624	mstsc.exe

Suspicious use of AdjustPrivilegeToken 10 IoCs

description	pid	Process
Token: SeDebugPrivilege	2828	svchost.exe
Token: SeDebugPrivilege	3624	mstsc.exe
Token: SeShutdownPrivilege	3440	Explorer.EXE
Token: SeCreatePagefilePrivilege	3440	Explorer.EXE
Token: SeShutdownPrivilege	3440	Explorer.EXE
Token: SeCreatePagefilePrivilege	3440	Explorer.EXE
Token: SeShutdownPrivilege	3440	Explorer.EXE
Token: SeCreatePagefilePrivilege	3440	Explorer.EXE
Token: SeShutdownPrivilege	3440	Explorer.EXE
Token: SeCreatePagefilePrivilege	3440	Explorer.EXE

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
2944	PL143_1400277334_2025032512033713_213128_00001..exe
2944	PL143_1400277334_2025032512033713_213128_00001..exe

Suspicious use of SendNotifyMessage 2 IoCs

pid	Process
2944	PL143_1400277334_2025032512033713_213128_00001..exe
2944	PL143_1400277334_2025032512033713_213128_00001..exe

Suspicious use of UnmapMainImage 1 IoCs

pid	Process
3440	Explorer.EXE

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 2944 wrote to memory of 2828	2944	PL143_1400277334_2025032512033713_213128_00001..exe	91
PID 2944 wrote to memory of 2828	2944	PL143_1400277334_2025032512033713_213128_00001..exe	91
PID 2944 wrote to memory of 2828	2944	PL143_1400277334_2025032512033713_213128_00001..exe	91
PID 2944 wrote to memory of 2828	2944	PL143_1400277334_2025032512033713_213128_00001..exe	91
PID 3440 wrote to memory of 3624	3440	Explorer.EXE	92
PID 3440 wrote to memory of 3624	3440	Explorer.EXE	92
PID 3440 wrote to memory of 3624	3440	Explorer.EXE	92
PID 3624 wrote to memory of 4520	3624	mstsc.exe	97
PID 3624 wrote to memory of 4520	3624	mstsc.exe	97
PID 3624 wrote to memory of 4520	3624	mstsc.exe	97

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:3440
- C:\Users\Admin\AppData\Local\Temp\PL143_1400277334_2025032512033713_213128_00001..exe
  "C:\Users\Admin\AppData\Local\Temp\PL143_1400277334_2025032512033713_213128_00001..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:2944
- - C:\Windows\SysWOW64\svchost.exe
    "C:\Users\Admin\AppData\Local\Temp\PL143_1400277334_2025032512033713_213128_00001..exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:2828
- 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:3624
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Windows\SysWOW64\svchost.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:4520

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

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Downloads

memory/2828-10-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2828-7-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2828-8-0x0000000001900000-0x0000000001C4A000-memory.dmp

Filesize
3.3MB

Download
memory/2828-11-0x0000000001860000-0x0000000001874000-memory.dmp

Filesize
80KB

Download
memory/2944-6-0x0000000000C20000-0x0000000001020000-memory.dmp

Filesize
4.0MB

Download
memory/3440-17-0x00000000087F0000-0x0000000008931000-memory.dmp

Filesize
1.3MB

Download
memory/3440-12-0x00000000087F0000-0x0000000008931000-memory.dmp

Filesize
1.3MB

Download
memory/3440-21-0x0000000008940000-0x0000000008A58000-memory.dmp

Filesize
1.1MB

Download
memory/3440-22-0x0000000008940000-0x0000000008A58000-memory.dmp

Filesize
1.1MB

Download
memory/3440-24-0x0000000008940000-0x0000000008A58000-memory.dmp

Filesize
1.1MB

Download
memory/3624-13-0x0000000000880000-0x00000000009BA000-memory.dmp

Filesize
1.2MB

Download
memory/3624-15-0x0000000000880000-0x00000000009BA000-memory.dmp

Filesize
1.2MB

Download
memory/3624-16-0x0000000000CC0000-0x0000000000CEF000-memory.dmp

Filesize
188KB

Download