formbook | 9d8faf70b5732a7994ea4a5b49e0ee5ada032b0a03e2048de8ffe6da4e66c412

Analysis

max time kernel
146s
max time network
121s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
07/01/2025, 08:23

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General

Target

$PLUGINSDIR/xjujmofosc.dll
Size

19KB
MD5

ac0ac6a7d57e4fd3137b57ea17e15178
SHA1

36f461a0cbc6a4561b08668c43e461b30dc462b8
SHA256

b1d82a6fc8574306088346d467e59094a3ed933de4de3e4f7703664c34a84f82
SHA512

31e39ca8118a3161f83c545241be617685992f09353daafbefaa16117b047b2eeb6ef0eb904957d02e93dfbbd46783d7c0d408dad62349f29cff53704e56b280
SSDEEP

384:itICC1G8JstE8o/lkKU+VThlVTtAHTmicG:8ICC1LJTL97QTQ

Score

10^/10

formbook dn7r discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

dn7r

Decoy

eventphotographerdfw.com

thehalalcoinstaking.com

philipfaziofineart.com

intercoh.com

gaiaseyephotography.com

chatbotforrealestate.com

lovelancemg.com

marlieskasberger.com

elcongoenespanol.info

lepirecredit.com

distribution-concept.com

e99game.com

exit11festival.com

twodollartoothbrushclub.com

cocktailsandlawn.com

performimprove.network

24horas-telefono-11840.com

cosmossify.com

kellenleote.com

perovskite.energy

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
behavioral3/memory/1220-1-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral3/memory/1220-4-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral3/memory/1496-11-0x0000000000090000-0x00000000000BF000-memory.dmp	formbook

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 1736 set thread context of 1220	1736	rundll32.exe	31
PID 1220 set thread context of 1204	1220	rundll32.exe	21
PID 1496 set thread context of 1204	1496	rundll32.exe	21

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

Suspicious behavior: EnumeratesProcesses 31 IoCs

pid	Process
1220	rundll32.exe
1220	rundll32.exe
1496	rundll32.exe
1496	rundll32.exe
1496	rundll32.exe
1496	rundll32.exe
1496	rundll32.exe
1496	rundll32.exe
1496	rundll32.exe
1496	rundll32.exe
1496	rundll32.exe
1496	rundll32.exe
1496	rundll32.exe
1496	rundll32.exe
1496	rundll32.exe
1496	rundll32.exe
1496	rundll32.exe
1496	rundll32.exe
1496	rundll32.exe
1496	rundll32.exe
1496	rundll32.exe
1496	rundll32.exe
1496	rundll32.exe
1496	rundll32.exe
1496	rundll32.exe
1496	rundll32.exe
1496	rundll32.exe
1496	rundll32.exe
1496	rundll32.exe
1496	rundll32.exe
1496	rundll32.exe

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
1220	rundll32.exe
1220	rundll32.exe
1220	rundll32.exe
1496	rundll32.exe
1496	rundll32.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1220	rundll32.exe
Token: SeDebugPrivilege	1496	rundll32.exe

Suspicious use of WriteProcessMemory 28 IoCs

description	pid	Process	procid_target
PID 1732 wrote to memory of 1736	1732	rundll32.exe	30
PID 1732 wrote to memory of 1736	1732	rundll32.exe	30
PID 1732 wrote to memory of 1736	1732	rundll32.exe	30
PID 1732 wrote to memory of 1736	1732	rundll32.exe	30
PID 1732 wrote to memory of 1736	1732	rundll32.exe	30
PID 1732 wrote to memory of 1736	1732	rundll32.exe	30
PID 1732 wrote to memory of 1736	1732	rundll32.exe	30
PID 1736 wrote to memory of 1220	1736	rundll32.exe	31
PID 1736 wrote to memory of 1220	1736	rundll32.exe	31
PID 1736 wrote to memory of 1220	1736	rundll32.exe	31
PID 1736 wrote to memory of 1220	1736	rundll32.exe	31
PID 1736 wrote to memory of 1220	1736	rundll32.exe	31
PID 1736 wrote to memory of 1220	1736	rundll32.exe	31
PID 1736 wrote to memory of 1220	1736	rundll32.exe	31
PID 1736 wrote to memory of 1220	1736	rundll32.exe	31
PID 1736 wrote to memory of 1220	1736	rundll32.exe	31
PID 1736 wrote to memory of 1220	1736	rundll32.exe	31
PID 1204 wrote to memory of 1496	1204	Explorer.EXE	32
PID 1204 wrote to memory of 1496	1204	Explorer.EXE	32
PID 1204 wrote to memory of 1496	1204	Explorer.EXE	32
PID 1204 wrote to memory of 1496	1204	Explorer.EXE	32
PID 1204 wrote to memory of 1496	1204	Explorer.EXE	32
PID 1204 wrote to memory of 1496	1204	Explorer.EXE	32
PID 1204 wrote to memory of 1496	1204	Explorer.EXE	32
PID 1496 wrote to memory of 2296	1496	rundll32.exe	33
PID 1496 wrote to memory of 2296	1496	rundll32.exe	33
PID 1496 wrote to memory of 2296	1496	rundll32.exe	33
PID 1496 wrote to memory of 2296	1496	rundll32.exe	33

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1204
- C:\Windows\system32\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\xjujmofosc.dll,#1
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1732
- - C:\Windows\SysWOW64\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\xjujmofosc.dll,#1
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1736
  - - C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\xjujmofosc.dll,#1
      4⤵
      Suspicious use of SetThreadContext
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious behavior: MapViewOfSection
      Suspicious use of AdjustPrivilegeToken
      PID:1220
- 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:1496
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Windows\SysWOW64\rundll32.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2296

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

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Downloads

memory/1204-6-0x0000000004EC0000-0x0000000004FA4000-memory.dmp

Filesize
912KB

Download
memory/1204-12-0x0000000004EC0000-0x0000000004FA4000-memory.dmp

Filesize
912KB

Download
memory/1220-1-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1220-2-0x00000000020A0000-0x00000000023A3000-memory.dmp

Filesize
3.0MB

Download
memory/1220-5-0x0000000000240000-0x0000000000255000-memory.dmp

Filesize
84KB

Download
memory/1220-4-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1496-10-0x0000000000280000-0x000000000028E000-memory.dmp

Filesize
56KB

Download
memory/1496-8-0x0000000000280000-0x000000000028E000-memory.dmp

Filesize
56KB

Download
memory/1496-7-0x0000000000280000-0x000000000028E000-memory.dmp

Filesize
56KB

Download
memory/1496-11-0x0000000000090000-0x00000000000BF000-memory.dmp

Filesize
188KB

Download
memory/1736-0-0x0000000010005000-0x0000000010007000-memory.dmp

Filesize
8KB

Download