formbook | f5ce0c2e0bc3027a6acc59824c809ba92c7f514eaffb77b08e13137e37c85028

General

Target

$PLUGINSDIR/owuqnjwjhmx.dll
Size

43KB
MD5

8a1dffc79873318c04f8a1faa7b5c10f
SHA1

ec7bf093eb33b20401b47aa307b785e70617c73d
SHA256

18e3fcb2014557bcf59994871e50dcc92ed677c6d3ecbfb02023574ede67c6f7
SHA512

f7c891e6c8278dbc38d79f4dbdedd6cb1c966f77d0fda3c43de9f788946bf4129a9b9ba88a4c1d0d7f3a294ab4619a1c9d6ccfd1c23a34954d09dc532a0d5d62
SSDEEP

768:7TVkXMvJB4sWHqz4D0ceGIuf6qaBxlgjHBzb2p:7TCAzmIuiqaBxlgjHdW

Score

10^/10

formbook ct6s discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

ct6s

Decoy

liaquatsibtian.com

erisa.cymru

theultimateone.world

petpartner.info

edison-press.com

ryanmurazik.icu

bukasystems.com

kitsusimplex.com

qatarstyleart.com

brkhot.top

paehdfdtrujdfhs.xyz

createdbybonk.com

kuihoon.com

deathtocustomerservice.com

iotimb.com

greendiamond.pw

millionaireproducers.academy

websitemolsa.com

cbshomeimprovement.com

eardunder.quest

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/2132-1-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral3/memory/2132-4-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral3/memory/2604-9-0x0000000000080000-0x00000000000AF000-memory.dmp	formbook

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2840 set thread context of 2132	2840	rundll32.exe	29
PID 2132 set thread context of 1200	2132	rundll32.exe	21
PID 2604 set thread context of 1200	2604	systray.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	systray.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious behavior: EnumeratesProcesses 31 IoCs

pid	Process
2132	rundll32.exe
2132	rundll32.exe
2604	systray.exe
2604	systray.exe
2604	systray.exe
2604	systray.exe
2604	systray.exe
2604	systray.exe
2604	systray.exe
2604	systray.exe
2604	systray.exe
2604	systray.exe
2604	systray.exe
2604	systray.exe
2604	systray.exe
2604	systray.exe
2604	systray.exe
2604	systray.exe
2604	systray.exe
2604	systray.exe
2604	systray.exe
2604	systray.exe
2604	systray.exe
2604	systray.exe
2604	systray.exe
2604	systray.exe
2604	systray.exe
2604	systray.exe
2604	systray.exe
2604	systray.exe
2604	systray.exe

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
2132	rundll32.exe
2132	rundll32.exe
2132	rundll32.exe
2604	systray.exe
2604	systray.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2132	rundll32.exe
Token: SeDebugPrivilege	2604	systray.exe

Suspicious use of WriteProcessMemory 25 IoCs

description	pid	Process	procid_target
PID 1716 wrote to memory of 2840	1716	rundll32.exe	28
PID 1716 wrote to memory of 2840	1716	rundll32.exe	28
PID 1716 wrote to memory of 2840	1716	rundll32.exe	28
PID 1716 wrote to memory of 2840	1716	rundll32.exe	28
PID 1716 wrote to memory of 2840	1716	rundll32.exe	28
PID 1716 wrote to memory of 2840	1716	rundll32.exe	28
PID 1716 wrote to memory of 2840	1716	rundll32.exe	28
PID 2840 wrote to memory of 2132	2840	rundll32.exe	29
PID 2840 wrote to memory of 2132	2840	rundll32.exe	29
PID 2840 wrote to memory of 2132	2840	rundll32.exe	29
PID 2840 wrote to memory of 2132	2840	rundll32.exe	29
PID 2840 wrote to memory of 2132	2840	rundll32.exe	29
PID 2840 wrote to memory of 2132	2840	rundll32.exe	29
PID 2840 wrote to memory of 2132	2840	rundll32.exe	29
PID 2840 wrote to memory of 2132	2840	rundll32.exe	29
PID 2840 wrote to memory of 2132	2840	rundll32.exe	29
PID 2840 wrote to memory of 2132	2840	rundll32.exe	29
PID 1200 wrote to memory of 2604	1200	Explorer.EXE	30
PID 1200 wrote to memory of 2604	1200	Explorer.EXE	30
PID 1200 wrote to memory of 2604	1200	Explorer.EXE	30
PID 1200 wrote to memory of 2604	1200	Explorer.EXE	30
PID 2604 wrote to memory of 2820	2604	systray.exe	31
PID 2604 wrote to memory of 2820	2604	systray.exe	31
PID 2604 wrote to memory of 2820	2604	systray.exe	31
PID 2604 wrote to memory of 2820	2604	systray.exe	31

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1200
- C:\Windows\system32\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\owuqnjwjhmx.dll,#1
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1716
- - C:\Windows\SysWOW64\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\owuqnjwjhmx.dll,#1
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2840
  - - C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\owuqnjwjhmx.dll,#1
      4⤵
      Suspicious use of SetThreadContext
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious behavior: MapViewOfSection
      Suspicious use of AdjustPrivilegeToken
      PID:2132
- C:\Windows\SysWOW64\systray.exe
  "C:\Windows\SysWOW64\systray.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:2604
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Windows\SysWOW64\rundll32.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2820

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1200-6-0x00000000074B0000-0x000000000764C000-memory.dmp

Filesize
1.6MB

Download
memory/1200-10-0x00000000074B0000-0x000000000764C000-memory.dmp

Filesize
1.6MB

Download
memory/2132-1-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2132-2-0x0000000002050000-0x0000000002353000-memory.dmp

Filesize
3.0MB

Download
memory/2132-4-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2132-5-0x00000000001E0000-0x00000000001F4000-memory.dmp

Filesize
80KB

Download
memory/2604-8-0x0000000000B40000-0x0000000000B45000-memory.dmp

Filesize
20KB

Download
memory/2604-7-0x0000000000B40000-0x0000000000B45000-memory.dmp

Filesize
20KB

Download
memory/2604-9-0x0000000000080000-0x00000000000AF000-memory.dmp

Filesize
188KB

Download
memory/2840-0-0x0000000074ABA000-0x0000000074ABC000-memory.dmp

Filesize
8KB

Download

Analysis

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