formbook | 17dc6ae2b8a4a5e958a09b19a771e102ec2ebbad438da6123705344eedcadf68

Analysis

max time kernel
149s
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
02/01/2025, 18:17

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General

Target

aaaaaaaaaaaaaaaaaa.exe
Size

848KB
MD5

d4dea766d9cd1fdb9545c08969811132
SHA1

c02a941d7ab478095ce042262d5cac4be864f9ed
SHA256

17dc6ae2b8a4a5e958a09b19a771e102ec2ebbad438da6123705344eedcadf68
SHA512

708c12cf2110e604fedbfb7c5584edadcfd9ff29a161cd48dff0232921cdccf099c9eab8d59c66f45865d59c1759f6adb187747d4b743cb33bde4dcbf5e39ac6
SSDEEP

12288:rLkcoxg7v3qnC11ErwIhh0F4qwUgUny5QLEZFoyB1wCdQzdMgqLjSWx:ffmMv6Ckr7Mny5QLqBUCdvXx

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/4072-6-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/4072-9-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/536-15-0x00000000008E0000-0x000000000090F000-memory.dmp	formbook

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 1504 set thread context of 4072	1504	aaaaaaaaaaaaaaaaaa.exe	83
PID 4072 set thread context of 3424	4072	svchost.exe	56
PID 536 set thread context of 3424	536	wlanext.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	wlanext.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	aaaaaaaaaaaaaaaaaa.exe

Suspicious behavior: EnumeratesProcesses 62 IoCs

pid	Process
4072	svchost.exe
4072	svchost.exe
4072	svchost.exe
4072	svchost.exe
536	wlanext.exe
536	wlanext.exe
536	wlanext.exe
536	wlanext.exe
536	wlanext.exe
536	wlanext.exe
536	wlanext.exe
536	wlanext.exe
536	wlanext.exe
536	wlanext.exe
536	wlanext.exe
536	wlanext.exe
536	wlanext.exe
536	wlanext.exe
536	wlanext.exe
536	wlanext.exe
536	wlanext.exe
536	wlanext.exe
536	wlanext.exe
536	wlanext.exe
536	wlanext.exe
536	wlanext.exe
536	wlanext.exe
536	wlanext.exe
536	wlanext.exe
536	wlanext.exe
536	wlanext.exe
536	wlanext.exe
536	wlanext.exe
536	wlanext.exe
536	wlanext.exe
536	wlanext.exe
536	wlanext.exe
536	wlanext.exe
536	wlanext.exe
536	wlanext.exe
536	wlanext.exe
536	wlanext.exe
536	wlanext.exe
536	wlanext.exe
536	wlanext.exe
536	wlanext.exe
536	wlanext.exe
536	wlanext.exe
536	wlanext.exe
536	wlanext.exe
536	wlanext.exe
536	wlanext.exe
536	wlanext.exe
536	wlanext.exe
536	wlanext.exe
536	wlanext.exe
536	wlanext.exe
536	wlanext.exe
536	wlanext.exe
536	wlanext.exe
536	wlanext.exe
536	wlanext.exe

Suspicious behavior: MapViewOfSection 6 IoCs

pid	Process
1504	aaaaaaaaaaaaaaaaaa.exe
4072	svchost.exe
4072	svchost.exe
4072	svchost.exe
536	wlanext.exe
536	wlanext.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4072	svchost.exe
Token: SeDebugPrivilege	536	wlanext.exe

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
1504	aaaaaaaaaaaaaaaaaa.exe
1504	aaaaaaaaaaaaaaaaaa.exe

Suspicious use of SendNotifyMessage 2 IoCs

pid	Process
1504	aaaaaaaaaaaaaaaaaa.exe
1504	aaaaaaaaaaaaaaaaaa.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 1504 wrote to memory of 4072	1504	aaaaaaaaaaaaaaaaaa.exe	83
PID 1504 wrote to memory of 4072	1504	aaaaaaaaaaaaaaaaaa.exe	83
PID 1504 wrote to memory of 4072	1504	aaaaaaaaaaaaaaaaaa.exe	83
PID 1504 wrote to memory of 4072	1504	aaaaaaaaaaaaaaaaaa.exe	83
PID 3424 wrote to memory of 536	3424	Explorer.EXE	84
PID 3424 wrote to memory of 536	3424	Explorer.EXE	84
PID 3424 wrote to memory of 536	3424	Explorer.EXE	84
PID 536 wrote to memory of 4836	536	wlanext.exe	86
PID 536 wrote to memory of 4836	536	wlanext.exe	86
PID 536 wrote to memory of 4836	536	wlanext.exe	86

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:3424
- C:\Users\Admin\AppData\Local\Temp\aaaaaaaaaaaaaaaaaa.exe
  "C:\Users\Admin\AppData\Local\Temp\aaaaaaaaaaaaaaaaaa.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:1504
- - C:\Windows\SysWOW64\svchost.exe
    "C:\Users\Admin\AppData\Local\Temp\aaaaaaaaaaaaaaaaaa.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:4072
- C:\Windows\SysWOW64\wlanext.exe
  "C:\Windows\SysWOW64\wlanext.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:536
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Windows\SysWOW64\svchost.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:4836

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/536-14-0x0000000000BE0000-0x0000000000BF7000-memory.dmp

Filesize
92KB

Download
memory/536-15-0x00000000008E0000-0x000000000090F000-memory.dmp

Filesize
188KB

Download
memory/536-12-0x0000000000BE0000-0x0000000000BF7000-memory.dmp

Filesize
92KB

Download
memory/1504-5-0x0000000001660000-0x0000000001664000-memory.dmp

Filesize
16KB

Download
memory/3424-16-0x0000000003D30000-0x0000000003E56000-memory.dmp

Filesize
1.1MB

Download
memory/3424-11-0x0000000003D30000-0x0000000003E56000-memory.dmp

Filesize
1.1MB

Download
memory/3424-20-0x0000000008040000-0x0000000008164000-memory.dmp

Filesize
1.1MB

Download
memory/3424-21-0x0000000008040000-0x0000000008164000-memory.dmp

Filesize
1.1MB

Download
memory/3424-23-0x0000000008040000-0x0000000008164000-memory.dmp

Filesize
1.1MB

Download
memory/4072-9-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/4072-10-0x0000000001890000-0x00000000018A4000-memory.dmp

Filesize
80KB

Download
memory/4072-7-0x0000000001900000-0x0000000001C4A000-memory.dmp

Filesize
3.3MB

Download
memory/4072-6-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download