formbook | 0f9aa51dd209c16c1dade86a46fa461d8a045c2350d406700864271dab631b98

Analysis

max time kernel
148s
max time network
147s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
29-12-2024 08:52

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General

Target

$PLUGINSDIR/j6m19kru6wpzksw.dll
Size

6KB
MD5

fb719cbb8e619a0a53503d32410c099a
SHA1

2d6a082ec6171fa00509758b25299278d1944657
SHA256

1f1a183a52a36d09ce8611504ee629c7c2ef93ad1b09d32fbf2500441b41d0e6
SHA512

68f7d338e41ffade872c8175c0dc62dd296dccd32f9d6308bb0a407c60032877bbd5bff4af7dacbcb3fa023f285ce55935defae750ff7e2108f6ff6f5ab22077
SSDEEP

96:vGWc7CvrKoslKrKosdGCA+odjIMVWH7A3Fx:vGpNosZosjABd1WH

Score

10^/10

formbook ndc discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

ndc

Decoy

ezy-kitchen.com

steedx.com

angelicacapital.com

mazinglife.com

courtmillbuilders.com

pakoussaapparel.com

thegirlamongthegirlnow.com

melaninandmarscosmetics.com

skylarfeeneyphotography.com

auto-servis.site

casnza.com

good-un.com

wonderfulwanfield.com

cumulustalent.net

cannapecbd.com

westernsocietyspot.club

021jdwx.com

parcelretail.com

lazakanya.com

muslimmediation.com

Signatures

Formbook
Formbook is a data stealing malware which is capable of stealing data.
trojan spyware stealer formbook
Formbook family
formbook

Formbook payload 2 IoCs

rat

resource	yara_rule
behavioral4/memory/2692-1-0x0000000000400000-0x000000000042E000-memory.dmp	formbook
behavioral4/memory/2692-4-0x0000000000400000-0x000000000042E000-memory.dmp	formbook

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 3240 set thread context of 2692	3240	rundll32.exe	83
PID 2692 set thread context of 3572	2692	rundll32.exe	56
PID 3744 set thread context of 3572	3744	chkdsk.exe	56

System Location Discovery: System Language Discovery 1 TTPs 4 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	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	chkdsk.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	chkdsk.exe

Suspicious behavior: EnumeratesProcesses 60 IoCs

pid	Process
2692	rundll32.exe
2692	rundll32.exe
2692	rundll32.exe
2692	rundll32.exe
3744	chkdsk.exe
3744	chkdsk.exe
3744	chkdsk.exe
3744	chkdsk.exe
3744	chkdsk.exe
3744	chkdsk.exe
3744	chkdsk.exe
3744	chkdsk.exe
3744	chkdsk.exe
3744	chkdsk.exe
3744	chkdsk.exe
3744	chkdsk.exe
3744	chkdsk.exe
3744	chkdsk.exe
3744	chkdsk.exe
3744	chkdsk.exe
3744	chkdsk.exe
3744	chkdsk.exe
3744	chkdsk.exe
3744	chkdsk.exe
3744	chkdsk.exe
3744	chkdsk.exe
3744	chkdsk.exe
3744	chkdsk.exe
3744	chkdsk.exe
3744	chkdsk.exe
3744	chkdsk.exe
3744	chkdsk.exe
3744	chkdsk.exe
3744	chkdsk.exe
3744	chkdsk.exe
3744	chkdsk.exe
3744	chkdsk.exe
3744	chkdsk.exe
3744	chkdsk.exe
3744	chkdsk.exe
3744	chkdsk.exe
3744	chkdsk.exe
3744	chkdsk.exe
3744	chkdsk.exe
3744	chkdsk.exe
3744	chkdsk.exe
3744	chkdsk.exe
3744	chkdsk.exe
3744	chkdsk.exe
3744	chkdsk.exe
3744	chkdsk.exe
3744	chkdsk.exe
3744	chkdsk.exe
3744	chkdsk.exe
3744	chkdsk.exe
3744	chkdsk.exe
3744	chkdsk.exe
3744	chkdsk.exe
3744	chkdsk.exe
3744	chkdsk.exe

Suspicious behavior: MapViewOfSection 6 IoCs

pid	Process
3240	rundll32.exe
2692	rundll32.exe
2692	rundll32.exe
2692	rundll32.exe
3744	chkdsk.exe
3744	chkdsk.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2692	rundll32.exe
Token: SeDebugPrivilege	3744	chkdsk.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 2228 wrote to memory of 3240	2228	rundll32.exe	82
PID 2228 wrote to memory of 3240	2228	rundll32.exe	82
PID 2228 wrote to memory of 3240	2228	rundll32.exe	82
PID 3240 wrote to memory of 2692	3240	rundll32.exe	83
PID 3240 wrote to memory of 2692	3240	rundll32.exe	83
PID 3240 wrote to memory of 2692	3240	rundll32.exe	83
PID 3240 wrote to memory of 2692	3240	rundll32.exe	83
PID 3572 wrote to memory of 3744	3572	Explorer.EXE	84
PID 3572 wrote to memory of 3744	3572	Explorer.EXE	84
PID 3572 wrote to memory of 3744	3572	Explorer.EXE	84
PID 3744 wrote to memory of 3740	3744	chkdsk.exe	85
PID 3744 wrote to memory of 3740	3744	chkdsk.exe	85
PID 3744 wrote to memory of 3740	3744	chkdsk.exe	85

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:3572
- C:\Windows\system32\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\j6m19kru6wpzksw.dll,#1
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2228
- - C:\Windows\SysWOW64\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\j6m19kru6wpzksw.dll,#1
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of WriteProcessMemory
    PID:3240
  - - C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\j6m19kru6wpzksw.dll,#1
      4⤵
      Suspicious use of SetThreadContext
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious behavior: MapViewOfSection
      Suspicious use of AdjustPrivilegeToken
      PID:2692
- C:\Windows\SysWOW64\chkdsk.exe
  "C:\Windows\SysWOW64\chkdsk.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Enumerates system info in registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3744
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Windows\SysWOW64\rundll32.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:3740

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

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/2692-1-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/2692-2-0x0000000002E80000-0x00000000031CA000-memory.dmp

Filesize
3.3MB

Download
memory/2692-5-0x0000000001050000-0x0000000001064000-memory.dmp

Filesize
80KB

Download
memory/2692-4-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/3240-0-0x0000000002870000-0x0000000002872000-memory.dmp

Filesize
8KB

Download
memory/3572-6-0x0000000002B00000-0x0000000002C12000-memory.dmp

Filesize
1.1MB

Download
memory/3572-9-0x0000000002B00000-0x0000000002C12000-memory.dmp

Filesize
1.1MB

Download
memory/3572-13-0x00000000080F0000-0x0000000008204000-memory.dmp

Filesize
1.1MB

Download
memory/3572-14-0x00000000080F0000-0x0000000008204000-memory.dmp

Filesize
1.1MB

Download
memory/3572-16-0x00000000080F0000-0x0000000008204000-memory.dmp

Filesize
1.1MB

Download
memory/3744-7-0x0000000000CC0000-0x0000000000CCA000-memory.dmp

Filesize
40KB

Download
memory/3744-8-0x0000000000CC0000-0x0000000000CCA000-memory.dmp

Filesize
40KB

Download