formbook | 3d0ecb3153b2807c930f820ddf5406d2e040a1a3553abc7dadcd7b7a608ee551

Analysis

max time kernel
146s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
03-01-2025 03:25

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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/4400-6-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/4400-9-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/1464-14-0x0000000000660000-0x000000000068F000-memory.dmp	formbook

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 3500 set thread context of 4400	3500	scasssss,,.exe	84
PID 4400 set thread context of 3392	4400	svchost.exe	56
PID 1464 set thread context of 3392	1464	help.exe	56

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

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1628	3500	WerFault.exe	83

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

Suspicious behavior: EnumeratesProcesses 62 IoCs

pid	Process
4400	svchost.exe
4400	svchost.exe
4400	svchost.exe
4400	svchost.exe
1464	help.exe
1464	help.exe
1464	help.exe
1464	help.exe
1464	help.exe
1464	help.exe
1464	help.exe
1464	help.exe
1464	help.exe
1464	help.exe
1464	help.exe
1464	help.exe
1464	help.exe
1464	help.exe
1464	help.exe
1464	help.exe
1464	help.exe
1464	help.exe
1464	help.exe
1464	help.exe
1464	help.exe
1464	help.exe
1464	help.exe
1464	help.exe
1464	help.exe
1464	help.exe
1464	help.exe
1464	help.exe
1464	help.exe
1464	help.exe
1464	help.exe
1464	help.exe
1464	help.exe
1464	help.exe
1464	help.exe
1464	help.exe
1464	help.exe
1464	help.exe
1464	help.exe
1464	help.exe
1464	help.exe
1464	help.exe
1464	help.exe
1464	help.exe
1464	help.exe
1464	help.exe
1464	help.exe
1464	help.exe
1464	help.exe
1464	help.exe
1464	help.exe
1464	help.exe
1464	help.exe
1464	help.exe
1464	help.exe
1464	help.exe
1464	help.exe
1464	help.exe

Suspicious behavior: MapViewOfSection 6 IoCs

pid	Process
3500	scasssss,,.exe
4400	svchost.exe
4400	svchost.exe
4400	svchost.exe
1464	help.exe
1464	help.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	4400	svchost.exe
Token: SeShutdownPrivilege	3392	Explorer.EXE
Token: SeCreatePagefilePrivilege	3392	Explorer.EXE
Token: SeShutdownPrivilege	3392	Explorer.EXE
Token: SeCreatePagefilePrivilege	3392	Explorer.EXE
Token: SeDebugPrivilege	1464	help.exe

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
3500	scasssss,,.exe
3500	scasssss,,.exe

Suspicious use of SendNotifyMessage 2 IoCs

pid	Process
3500	scasssss,,.exe
3500	scasssss,,.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 3500 wrote to memory of 4400	3500	scasssss,,.exe	84
PID 3500 wrote to memory of 4400	3500	scasssss,,.exe	84
PID 3500 wrote to memory of 4400	3500	scasssss,,.exe	84
PID 3500 wrote to memory of 4400	3500	scasssss,,.exe	84
PID 3392 wrote to memory of 1464	3392	Explorer.EXE	88
PID 3392 wrote to memory of 1464	3392	Explorer.EXE	88
PID 3392 wrote to memory of 1464	3392	Explorer.EXE	88
PID 1464 wrote to memory of 1264	1464	help.exe	89
PID 1464 wrote to memory of 1264	1464	help.exe	89
PID 1464 wrote to memory of 1264	1464	help.exe	89

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3392
- 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:3500
- - 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:4400
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 3500 -s 760
    3⤵
    - Program crash
    PID:1628
- C:\Windows\SysWOW64\help.exe
  "C:\Windows\SysWOW64\help.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:1464
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Windows\SysWOW64\svchost.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:1264

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3500 -ip 3500
1⤵
PID:396

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

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Downloads

memory/1464-13-0x00000000006A0000-0x00000000006A7000-memory.dmp

Filesize
28KB

Download
memory/1464-14-0x0000000000660000-0x000000000068F000-memory.dmp

Filesize
188KB

Download
memory/1464-12-0x00000000006A0000-0x00000000006A7000-memory.dmp

Filesize
28KB

Download
memory/3392-15-0x00000000089D0000-0x0000000008AF6000-memory.dmp

Filesize
1.1MB

Download
memory/3392-11-0x00000000089D0000-0x0000000008AF6000-memory.dmp

Filesize
1.1MB

Download
memory/3392-19-0x0000000003400000-0x000000000349D000-memory.dmp

Filesize
628KB

Download
memory/3392-20-0x0000000003400000-0x000000000349D000-memory.dmp

Filesize
628KB

Download
memory/3392-22-0x0000000003400000-0x000000000349D000-memory.dmp

Filesize
628KB

Download
memory/3500-5-0x0000000003390000-0x0000000003394000-memory.dmp

Filesize
16KB

Download
memory/4400-9-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/4400-10-0x0000000000D50000-0x0000000000D64000-memory.dmp

Filesize
80KB

Download
memory/4400-7-0x0000000001600000-0x000000000194A000-memory.dmp

Filesize
3.3MB

Download
memory/4400-6-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download