formbook | 43498d0fd9a7413bb86490ef4e44529779e18c3cf9f78c5b1f2b53d29cf606af

General

Target

doc06520720220131121555,pdf.exe
Size

1.1MB
MD5

b274a8db1f2759a5633feda3ebb76e99
SHA1

bb145758eee0923a3b5fef02c300fe631855bbb6
SHA256

cbf712334783e060e67ba77d675a7402efa44b879aeed5b56fdbe9f2b01ee99c
SHA512

8b070b4686d60f7cb26e77451975bc1cade564def98b92077db90b6202a2439857e9df95fadf39064e717acad6fb64dc0065b1f0e4ea9d126f223fb7ac0b3471
SSDEEP

24576:eYhos91WO8ZCh9/9D/bLWLcygotSl2G6PrOTg0cm+pS8Yx:7hos91N7h9/9bbLWrdSl2G6PrOTg0cmh

Score

10^/10

formbook ch24 discovery evasion rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

ch24

Decoy

tmicp.com

lauriceiker.quest

neighbor-works.com

santiemprenderich.wiki

thecraftytxdogmom.com

abramolfactory.com

prettylittlesoles.com

thistimeandilove.space

imperialshaving.com

aflorideallgarden.com

thbfjs.com

marketmove.info

echocoins.com

ztkzw.com

sandyhookfishandribhouse.com

gamesxfr.com

frontline500.com

cbburrnet.com

boliviaoferta.com

jdzmklc.com

Signatures

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

Formbook payload 4 IoCs

rat

resource	yara_rule
behavioral1/memory/2812-12-0x0000000000400000-0x0000000000459000-memory.dmp	formbook
behavioral1/memory/2812-9-0x0000000000400000-0x0000000000459000-memory.dmp	formbook
behavioral1/memory/2812-16-0x0000000000400000-0x0000000000459000-memory.dmp	formbook
behavioral1/memory/1056-23-0x00000000000C0000-0x00000000000EF000-memory.dmp	formbook

Looks for VirtualBox Guest Additions in registry 2 TTPs 1 IoCs

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Oracle\VirtualBox Guest Additions	doc06520720220131121555,pdf.exe

Looks for VMWare Tools registry key 2 TTPs 1 IoCs

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\VMware, Inc.\VMware Tools	doc06520720220131121555,pdf.exe

Checks BIOS information in registry 2 TTPs 2 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	doc06520720220131121555,pdf.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	doc06520720220131121555,pdf.exe

Maps connected drives based on registry 3 TTPs 2 IoCs

Disk information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	doc06520720220131121555,pdf.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0	doc06520720220131121555,pdf.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2648 set thread context of 2812	2648	doc06520720220131121555,pdf.exe	32
PID 2812 set thread context of 1200	2812	msdt.exe	21
PID 1056 set thread context of 1200	1056	help.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	doc06520720220131121555,pdf.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	msdt.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	help.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious behavior: EnumeratesProcesses 43 IoCs

pid	Process
2648	doc06520720220131121555,pdf.exe
2648	doc06520720220131121555,pdf.exe
2648	doc06520720220131121555,pdf.exe
2648	doc06520720220131121555,pdf.exe
2648	doc06520720220131121555,pdf.exe
2648	doc06520720220131121555,pdf.exe
2648	doc06520720220131121555,pdf.exe
2648	doc06520720220131121555,pdf.exe
2648	doc06520720220131121555,pdf.exe
2648	doc06520720220131121555,pdf.exe
2812	msdt.exe
2812	msdt.exe
2648	doc06520720220131121555,pdf.exe
2648	doc06520720220131121555,pdf.exe
1056	help.exe
1056	help.exe
1056	help.exe
1056	help.exe
1056	help.exe
1056	help.exe
1056	help.exe
1056	help.exe
1056	help.exe
1056	help.exe
1056	help.exe
1056	help.exe
1056	help.exe
1056	help.exe
1056	help.exe
1056	help.exe
1056	help.exe
1056	help.exe
1056	help.exe
1056	help.exe
1056	help.exe
1056	help.exe
1056	help.exe
1056	help.exe
1056	help.exe
1056	help.exe
1056	help.exe
1056	help.exe
1056	help.exe

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
2812	msdt.exe
2812	msdt.exe
2812	msdt.exe
1056	help.exe
1056	help.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2648	doc06520720220131121555,pdf.exe
Token: SeDebugPrivilege	2812	msdt.exe
Token: SeDebugPrivilege	1056	help.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 2648 wrote to memory of 1268	2648	doc06520720220131121555,pdf.exe	31
PID 2648 wrote to memory of 1268	2648	doc06520720220131121555,pdf.exe	31
PID 2648 wrote to memory of 1268	2648	doc06520720220131121555,pdf.exe	31
PID 2648 wrote to memory of 1268	2648	doc06520720220131121555,pdf.exe	31
PID 2648 wrote to memory of 2812	2648	doc06520720220131121555,pdf.exe	32
PID 2648 wrote to memory of 2812	2648	doc06520720220131121555,pdf.exe	32
PID 2648 wrote to memory of 2812	2648	doc06520720220131121555,pdf.exe	32
PID 2648 wrote to memory of 2812	2648	doc06520720220131121555,pdf.exe	32
PID 2648 wrote to memory of 2812	2648	doc06520720220131121555,pdf.exe	32
PID 2648 wrote to memory of 2812	2648	doc06520720220131121555,pdf.exe	32
PID 2648 wrote to memory of 2812	2648	doc06520720220131121555,pdf.exe	32
PID 2648 wrote to memory of 2812	2648	doc06520720220131121555,pdf.exe	32
PID 1200 wrote to memory of 1056	1200	Explorer.EXE	33
PID 1200 wrote to memory of 1056	1200	Explorer.EXE	33
PID 1200 wrote to memory of 1056	1200	Explorer.EXE	33
PID 1200 wrote to memory of 1056	1200	Explorer.EXE	33
PID 1056 wrote to memory of 2596	1056	help.exe	34
PID 1056 wrote to memory of 2596	1056	help.exe	34
PID 1056 wrote to memory of 2596	1056	help.exe	34
PID 1056 wrote to memory of 2596	1056	help.exe	34

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1200
- C:\Users\Admin\AppData\Local\Temp\doc06520720220131121555,pdf.exe
  "C:\Users\Admin\AppData\Local\Temp\doc06520720220131121555,pdf.exe"
  2⤵
  - Looks for VirtualBox Guest Additions in registry
  - Looks for VMWare Tools registry key
  - Checks BIOS information in registry
  - Maps connected drives based on registry
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2648
- - C:\Windows\SysWOW64\Netplwiz.exe
    "C:\Windows\SysWOW64\Netplwiz.exe"
    3⤵
    PID:1268
- - C:\Windows\SysWOW64\msdt.exe
    "C:\Windows\SysWOW64\msdt.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:2812
- C:\Windows\SysWOW64\help.exe
  "C:\Windows\SysWOW64\help.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:1056
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Windows\SysWOW64\msdt.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2596

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

2

T1497

Credential Access

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Virtualization/Sandbox Evasion

2

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/1056-23-0x00000000000C0000-0x00000000000EF000-memory.dmp

Filesize
188KB

Download
memory/1056-20-0x0000000000390000-0x0000000000396000-memory.dmp

Filesize
24KB

Download
memory/1056-22-0x0000000000390000-0x0000000000396000-memory.dmp

Filesize
24KB

Download
memory/1200-18-0x00000000074D0000-0x000000000767E000-memory.dmp

Filesize
1.7MB

Download
memory/1200-24-0x00000000074D0000-0x000000000767E000-memory.dmp

Filesize
1.7MB

Download
memory/2648-1-0x0000000000C70000-0x0000000000D8C000-memory.dmp

Filesize
1.1MB

Download
memory/2648-2-0x0000000000A50000-0x0000000000B10000-memory.dmp

Filesize
768KB

Download
memory/2648-3-0x0000000000360000-0x0000000000388000-memory.dmp

Filesize
160KB

Download
memory/2648-4-0x0000000074410000-0x0000000074AFE000-memory.dmp

Filesize
6.9MB

Download
memory/2648-0-0x000000007441E000-0x000000007441F000-memory.dmp

Filesize
4KB

Download
memory/2648-19-0x0000000074410000-0x0000000074AFE000-memory.dmp

Filesize
6.9MB

Download
memory/2812-9-0x0000000000400000-0x0000000000459000-memory.dmp

Filesize
356KB

Download
memory/2812-17-0x00000000003B0000-0x00000000003C4000-memory.dmp

Filesize
80KB

Download
memory/2812-16-0x0000000000400000-0x0000000000459000-memory.dmp

Filesize
356KB

Download
memory/2812-13-0x0000000000730000-0x0000000000A33000-memory.dmp

Filesize
3.0MB

Download
memory/2812-7-0x0000000000400000-0x0000000000459000-memory.dmp

Filesize
356KB

Download
memory/2812-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2812-12-0x0000000000400000-0x0000000000459000-memory.dmp

Filesize
356KB

Download
memory/2812-6-0x0000000000400000-0x0000000000459000-memory.dmp

Filesize
356KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads