formbook | d6e979a3574885e4bdb3b8c8831897302285fe2f5cf52a86ce4538705b803fac

Analysis

max time kernel
148s
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, 04:37

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General

Target

AAHSHS.exe
Size

1.1MB
MD5

a4906211beb74593aecdfa9bf5092bef
SHA1

053a4dbcc5555e1359ea81cd42d1161cf6eff3e8
SHA256

df4e5d0884836c220aea16b85ffe57ab973bdbd586b125ea5522da15f03b9c2e
SHA512

e160ef8460cc999a9ba3fb12eabf698be72f74847fc6358b0615db984706a1098b1b6948adcf2910068508f407c3c84adfc3f725085f71d4e20465a2fe3155ce
SSDEEP

24576:MAHnh+eWsN3skA4RV1Hom2KXMmHaoyJXwzK00YsVrEJYwR5:rh+ZkldoPK8YaoWXHVhTO

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/4572-7-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/4572-10-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/1596-16-0x0000000001410000-0x000000000143F000-memory.dmp	formbook

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 4876 set thread context of 4572	4876	AAHSHS.exe	83
PID 4572 set thread context of 3512	4572	svchost.exe	56
PID 1596 set thread context of 3512	1596	WWAHost.exe	56

Program crash 1 IoCs

pid	pid_target	Process	procid_target
112	4876	WerFault.exe	82

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	AAHSHS.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	WWAHost.exe

Suspicious behavior: EnumeratesProcesses 62 IoCs

pid	Process
4572	svchost.exe
4572	svchost.exe
4572	svchost.exe
4572	svchost.exe
1596	WWAHost.exe
1596	WWAHost.exe
1596	WWAHost.exe
1596	WWAHost.exe
1596	WWAHost.exe
1596	WWAHost.exe
1596	WWAHost.exe
1596	WWAHost.exe
1596	WWAHost.exe
1596	WWAHost.exe
1596	WWAHost.exe
1596	WWAHost.exe
1596	WWAHost.exe
1596	WWAHost.exe
1596	WWAHost.exe
1596	WWAHost.exe
1596	WWAHost.exe
1596	WWAHost.exe
1596	WWAHost.exe
1596	WWAHost.exe
1596	WWAHost.exe
1596	WWAHost.exe
1596	WWAHost.exe
1596	WWAHost.exe
1596	WWAHost.exe
1596	WWAHost.exe
1596	WWAHost.exe
1596	WWAHost.exe
1596	WWAHost.exe
1596	WWAHost.exe
1596	WWAHost.exe
1596	WWAHost.exe
1596	WWAHost.exe
1596	WWAHost.exe
1596	WWAHost.exe
1596	WWAHost.exe
1596	WWAHost.exe
1596	WWAHost.exe
1596	WWAHost.exe
1596	WWAHost.exe
1596	WWAHost.exe
1596	WWAHost.exe
1596	WWAHost.exe
1596	WWAHost.exe
1596	WWAHost.exe
1596	WWAHost.exe
1596	WWAHost.exe
1596	WWAHost.exe
1596	WWAHost.exe
1596	WWAHost.exe
1596	WWAHost.exe
1596	WWAHost.exe
1596	WWAHost.exe
1596	WWAHost.exe
1596	WWAHost.exe
1596	WWAHost.exe
1596	WWAHost.exe
1596	WWAHost.exe

Suspicious behavior: MapViewOfSection 6 IoCs

pid	Process
4876	AAHSHS.exe
4572	svchost.exe
4572	svchost.exe
4572	svchost.exe
1596	WWAHost.exe
1596	WWAHost.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	4572	svchost.exe
Token: SeShutdownPrivilege	3512	Explorer.EXE
Token: SeCreatePagefilePrivilege	3512	Explorer.EXE
Token: SeShutdownPrivilege	3512	Explorer.EXE
Token: SeCreatePagefilePrivilege	3512	Explorer.EXE
Token: SeDebugPrivilege	1596	WWAHost.exe

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
4876	AAHSHS.exe
4876	AAHSHS.exe

Suspicious use of SendNotifyMessage 2 IoCs

pid	Process
4876	AAHSHS.exe
4876	AAHSHS.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 4876 wrote to memory of 4572	4876	AAHSHS.exe	83
PID 4876 wrote to memory of 4572	4876	AAHSHS.exe	83
PID 4876 wrote to memory of 4572	4876	AAHSHS.exe	83
PID 4876 wrote to memory of 4572	4876	AAHSHS.exe	83
PID 3512 wrote to memory of 1596	3512	Explorer.EXE	87
PID 3512 wrote to memory of 1596	3512	Explorer.EXE	87
PID 3512 wrote to memory of 1596	3512	Explorer.EXE	87
PID 1596 wrote to memory of 3676	1596	WWAHost.exe	88
PID 1596 wrote to memory of 3676	1596	WWAHost.exe	88
PID 1596 wrote to memory of 3676	1596	WWAHost.exe	88

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3512
- C:\Users\Admin\AppData\Local\Temp\AAHSHS.exe
  "C:\Users\Admin\AppData\Local\Temp\AAHSHS.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:4876
- - C:\Windows\SysWOW64\svchost.exe
    "C:\Users\Admin\AppData\Local\Temp\AAHSHS.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:4572
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4876 -s 692
    3⤵
    - Program crash
    PID:112
- C:\Windows\SysWOW64\WWAHost.exe
  "C:\Windows\SysWOW64\WWAHost.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:1596
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Windows\SysWOW64\svchost.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:3676

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 4876 -ip 4876
1⤵
PID:804

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/1596-13-0x0000000000400000-0x00000000004DC000-memory.dmp

Filesize
880KB

Download
memory/1596-16-0x0000000001410000-0x000000000143F000-memory.dmp

Filesize
188KB

Download
memory/1596-15-0x0000000000400000-0x00000000004DC000-memory.dmp

Filesize
880KB

Download
memory/3512-17-0x00000000084A0000-0x00000000085E7000-memory.dmp

Filesize
1.3MB

Download
memory/3512-12-0x00000000084A0000-0x00000000085E7000-memory.dmp

Filesize
1.3MB

Download
memory/3512-21-0x00000000085F0000-0x0000000008748000-memory.dmp

Filesize
1.3MB

Download
memory/3512-22-0x00000000085F0000-0x0000000008748000-memory.dmp

Filesize
1.3MB

Download
memory/3512-24-0x00000000085F0000-0x0000000008748000-memory.dmp

Filesize
1.3MB

Download
memory/4572-10-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/4572-11-0x0000000001720000-0x0000000001734000-memory.dmp

Filesize
80KB

Download
memory/4572-8-0x0000000001800000-0x0000000001B4A000-memory.dmp

Filesize
3.3MB

Download
memory/4572-7-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/4876-6-0x0000000000D60000-0x0000000001160000-memory.dmp

Filesize
4.0MB

Download