formbook | f7f93b6f1ab15cfd66c3d0d60fb7572257d9f283050a8ad2d3d6b710bc8af0f6

Analysis

max time kernel
147s
max time network
144s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
18-12-2024 08:08

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General

Target

scasssss,,.exe
Size

849KB
MD5

02cc023f5905add407d585e509a90205
SHA1

ce652c373dfa3c6602a8eebc01d86eecc12a2b48
SHA256

f7f93b6f1ab15cfd66c3d0d60fb7572257d9f283050a8ad2d3d6b710bc8af0f6
SHA512

82ebb861d07cc533eeaa7970dc544163d0ae2cc342219f12977c68593607c2ebd8d810ab15d7cdaa37d7e6f6f7ecf5d3f2925c2f7c2631792836500abf352460
SSDEEP

12288:rLkcoxg7v3qnC11ErwIhh0F4qwUgUny5QLo8aYGMCT/T63Nvd2ZzcniZA2N:ffmMv6Ckr7Mny5QLoYCT/DZA8

Score

10^/10

formbook cl21 discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

cl21

Decoy

0001.shop

earch-parttimejobs.today

are888.top

akanhaunthipped.shop

othing-heyu.xyz

cadvirsor.net

nclanalae.shop

lectric-cars-mexico.today

oxj-question.xyz

ersonalloanoffers.today

ersonalloans-fo54-fo37.click

verybody-ewfx.xyz

ercuremontauban.media

azilimdunyam.net

airs-clinicato.today

wiftsscend.click

ertainly-jbws.xyz

8xeng.app

damekadmitageable.cfd

ollapsedec.shop

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/4336-6-0x00000000004A0000-0x00000000004CF000-memory.dmp	formbook
behavioral2/memory/4336-10-0x00000000004A0000-0x00000000004CF000-memory.dmp	formbook
behavioral2/memory/756-16-0x0000000000BB0000-0x0000000000BDF000-memory.dmp	formbook

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 388 set thread context of 4336	388	scasssss,,.exe	85
PID 4336 set thread context of 3452	4336	svchost.exe	55
PID 756 set thread context of 3452	756	rundll32.exe	55

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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	scasssss,,.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe

Suspicious behavior: EnumeratesProcesses 62 IoCs

pid	Process
4336	svchost.exe
4336	svchost.exe
4336	svchost.exe
4336	svchost.exe
756	rundll32.exe
756	rundll32.exe
756	rundll32.exe
756	rundll32.exe
756	rundll32.exe
756	rundll32.exe
756	rundll32.exe
756	rundll32.exe
756	rundll32.exe
756	rundll32.exe
756	rundll32.exe
756	rundll32.exe
756	rundll32.exe
756	rundll32.exe
756	rundll32.exe
756	rundll32.exe
756	rundll32.exe
756	rundll32.exe
756	rundll32.exe
756	rundll32.exe
756	rundll32.exe
756	rundll32.exe
756	rundll32.exe
756	rundll32.exe
756	rundll32.exe
756	rundll32.exe
756	rundll32.exe
756	rundll32.exe
756	rundll32.exe
756	rundll32.exe
756	rundll32.exe
756	rundll32.exe
756	rundll32.exe
756	rundll32.exe
756	rundll32.exe
756	rundll32.exe
756	rundll32.exe
756	rundll32.exe
756	rundll32.exe
756	rundll32.exe
756	rundll32.exe
756	rundll32.exe
756	rundll32.exe
756	rundll32.exe
756	rundll32.exe
756	rundll32.exe
756	rundll32.exe
756	rundll32.exe
756	rundll32.exe
756	rundll32.exe
756	rundll32.exe
756	rundll32.exe
756	rundll32.exe
756	rundll32.exe
756	rundll32.exe
756	rundll32.exe
756	rundll32.exe
756	rundll32.exe

Suspicious behavior: MapViewOfSection 7 IoCs

pid	Process
388	scasssss,,.exe
388	scasssss,,.exe
4336	svchost.exe
4336	svchost.exe
4336	svchost.exe
756	rundll32.exe
756	rundll32.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4336	svchost.exe
Token: SeDebugPrivilege	756	rundll32.exe

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
388	scasssss,,.exe
388	scasssss,,.exe

Suspicious use of SendNotifyMessage 2 IoCs

pid	Process
388	scasssss,,.exe
388	scasssss,,.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 388 wrote to memory of 4336	388	scasssss,,.exe	85
PID 388 wrote to memory of 4336	388	scasssss,,.exe	85
PID 388 wrote to memory of 4336	388	scasssss,,.exe	85
PID 388 wrote to memory of 4336	388	scasssss,,.exe	85
PID 3452 wrote to memory of 756	3452	Explorer.EXE	86
PID 3452 wrote to memory of 756	3452	Explorer.EXE	86
PID 3452 wrote to memory of 756	3452	Explorer.EXE	86
PID 756 wrote to memory of 832	756	rundll32.exe	88
PID 756 wrote to memory of 832	756	rundll32.exe	88
PID 756 wrote to memory of 832	756	rundll32.exe	88

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:3452
- C:\Users\Admin\AppData\Local\Temp\scasssss,,.exe
  "C:\Users\Admin\AppData\Local\Temp\scasssss,,.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:388
- - C:\Windows\SysWOW64\svchost.exe
    "C:\Users\Admin\AppData\Local\Temp\scasssss,,.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:4336
- C:\Windows\SysWOW64\rundll32.exe
  "C:\Windows\SysWOW64\rundll32.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:756
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Windows\SysWOW64\svchost.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:832

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/388-5-0x0000000000B10000-0x0000000000B14000-memory.dmp

Filesize
16KB

Download
memory/756-13-0x0000000000760000-0x0000000000774000-memory.dmp

Filesize
80KB

Download
memory/756-16-0x0000000000BB0000-0x0000000000BDF000-memory.dmp

Filesize
188KB

Download
memory/756-15-0x0000000000760000-0x0000000000774000-memory.dmp

Filesize
80KB

Download
memory/3452-17-0x00000000087C0000-0x0000000008930000-memory.dmp

Filesize
1.4MB

Download
memory/3452-12-0x00000000087C0000-0x0000000008930000-memory.dmp

Filesize
1.4MB

Download
memory/3452-21-0x0000000008930000-0x0000000008A8C000-memory.dmp

Filesize
1.4MB

Download
memory/3452-22-0x0000000008930000-0x0000000008A8C000-memory.dmp

Filesize
1.4MB

Download
memory/3452-24-0x0000000008930000-0x0000000008A8C000-memory.dmp

Filesize
1.4MB

Download
memory/4336-10-0x00000000004A0000-0x00000000004CF000-memory.dmp

Filesize
188KB

Download
memory/4336-11-0x0000000000BD0000-0x0000000000BE4000-memory.dmp

Filesize
80KB

Download
memory/4336-9-0x0000000000E00000-0x000000000114A000-memory.dmp

Filesize
3.3MB

Download
memory/4336-6-0x00000000004A0000-0x00000000004CF000-memory.dmp

Filesize
188KB

Download