formbook | e329ba34d8d1570ab97774983efb805ffef12a16684c4687c90f4fc2959d2b5e

General

Target

Quotation_2353882378.pdf.exe
Size

891KB
MD5

e13096d3bdcbb8a331d0cfd2114998ff
SHA1

5c19600fbd7c9dd4693e0c408803fe2bf50f04a9
SHA256

7ae4fad494657ec1621fcfe3005d577a4d8ca04847ca48eb466e4649f00faad3
SHA512

5d259ed4e4b6bf2827b668649a748dd5705debc35041feae245962f2f4dc5253aedd4aabec19baf5821edcb802f8b1f2b4816267e3627ce51fdb5bc070570e43
SSDEEP

24576:MGb3AdbcDnunGjCVvUFKEg+blsIYZxsn/amHgyUNC:vmWnD8UFKE/OIxgyUN

Score

10^/10

formbook kzsw discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

kzsw

Decoy

thelargedoor.com

newcuus.com

tgc.xyz

americanrvwarranties.com

deroshop.com

wagyu-importer.com

frbhomeloan.com

taniabeautysalonspa.com

nac-alerton.com

ordersudsy.com

villagegardengreeley.com

locksmithpembrokepines.com

rafsanjan.net

jumlasx.xyz

supermercadoveganmadrid.com

rubsalmon.com

glenhelensaturdaymotocross.com

jichuang888.club

aajnv.com

stackablesllc.com

Signatures

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

CustAttr .NET packer 1 IoCs

Detects CustAttr .NET packer in memory.

resource	yara_rule
behavioral2/memory/2304-9-0x0000000006850000-0x000000000685A000-memory.dmp	CustAttr

Formbook payload 4 IoCs

rat

resource	yara_rule
behavioral2/memory/548-14-0x0000000000400000-0x000000000042E000-memory.dmp	formbook
behavioral2/memory/548-19-0x0000000000400000-0x000000000042E000-memory.dmp	formbook
behavioral2/memory/548-23-0x0000000000400000-0x000000000042E000-memory.dmp	formbook
behavioral2/memory/2624-28-0x0000000000500000-0x000000000052E000-memory.dmp	formbook

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 2304 set thread context of 548	2304	Quotation_2353882378.pdf.exe	91
PID 548 set thread context of 3568	548	Quotation_2353882378.pdf.exe	56
PID 548 set thread context of 3568	548	Quotation_2353882378.pdf.exe	56
PID 2624 set thread context of 3568	2624	NETSTAT.EXE	56

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	Quotation_2353882378.pdf.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	NETSTAT.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Gathers network information 2 TTPs 1 IoCs

Uses commandline utility to view network configuration.

System Information Discovery

T1082

Command and Scripting Interpreter

T1059

pid	Process
2624	NETSTAT.EXE

Suspicious behavior: EnumeratesProcesses 26 IoCs

pid	Process
2304	Quotation_2353882378.pdf.exe
2304	Quotation_2353882378.pdf.exe
2304	Quotation_2353882378.pdf.exe
2304	Quotation_2353882378.pdf.exe
548	Quotation_2353882378.pdf.exe
548	Quotation_2353882378.pdf.exe
548	Quotation_2353882378.pdf.exe
548	Quotation_2353882378.pdf.exe
548	Quotation_2353882378.pdf.exe
548	Quotation_2353882378.pdf.exe
2624	NETSTAT.EXE
2624	NETSTAT.EXE
2624	NETSTAT.EXE
2624	NETSTAT.EXE
2624	NETSTAT.EXE
2624	NETSTAT.EXE
2624	NETSTAT.EXE
2624	NETSTAT.EXE
2624	NETSTAT.EXE
2624	NETSTAT.EXE
2624	NETSTAT.EXE
2624	NETSTAT.EXE
2624	NETSTAT.EXE
2624	NETSTAT.EXE
2624	NETSTAT.EXE
2624	NETSTAT.EXE

Suspicious behavior: MapViewOfSection 6 IoCs

pid	Process
548	Quotation_2353882378.pdf.exe
548	Quotation_2353882378.pdf.exe
548	Quotation_2353882378.pdf.exe
548	Quotation_2353882378.pdf.exe
2624	NETSTAT.EXE
2624	NETSTAT.EXE

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2304	Quotation_2353882378.pdf.exe
Token: SeDebugPrivilege	548	Quotation_2353882378.pdf.exe
Token: SeDebugPrivilege	2624	NETSTAT.EXE

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2304 wrote to memory of 548	2304	Quotation_2353882378.pdf.exe	91
PID 2304 wrote to memory of 548	2304	Quotation_2353882378.pdf.exe	91
PID 2304 wrote to memory of 548	2304	Quotation_2353882378.pdf.exe	91
PID 2304 wrote to memory of 548	2304	Quotation_2353882378.pdf.exe	91
PID 2304 wrote to memory of 548	2304	Quotation_2353882378.pdf.exe	91
PID 2304 wrote to memory of 548	2304	Quotation_2353882378.pdf.exe	91
PID 3568 wrote to memory of 2624	3568	Explorer.EXE	92
PID 3568 wrote to memory of 2624	3568	Explorer.EXE	92
PID 3568 wrote to memory of 2624	3568	Explorer.EXE	92
PID 2624 wrote to memory of 976	2624	NETSTAT.EXE	93
PID 2624 wrote to memory of 976	2624	NETSTAT.EXE	93
PID 2624 wrote to memory of 976	2624	NETSTAT.EXE	93

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:3568
- C:\Users\Admin\AppData\Local\Temp\Quotation_2353882378.pdf.exe
  "C:\Users\Admin\AppData\Local\Temp\Quotation_2353882378.pdf.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2304
- - C:\Users\Admin\AppData\Local\Temp\Quotation_2353882378.pdf.exe
    "C:\Users\Admin\AppData\Local\Temp\Quotation_2353882378.pdf.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:548
- C:\Windows\SysWOW64\NETSTAT.EXE
  "C:\Windows\SysWOW64\NETSTAT.EXE"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Gathers network information
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2624
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\Quotation_2353882378.pdf.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:976

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

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/548-24-0x0000000001570000-0x0000000001584000-memory.dmp

Filesize
80KB

Download
memory/548-17-0x0000000001220000-0x000000000156A000-memory.dmp

Filesize
3.3MB

Download
memory/548-14-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/548-23-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/548-19-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/548-20-0x00000000011C0000-0x00000000011D4000-memory.dmp

Filesize
80KB

Download
memory/2304-8-0x0000000074740000-0x0000000074EF0000-memory.dmp

Filesize
7.7MB

Download
memory/2304-5-0x0000000005000000-0x000000000500A000-memory.dmp

Filesize
40KB

Download
memory/2304-1-0x0000000000670000-0x0000000000756000-memory.dmp

Filesize
920KB

Download
memory/2304-9-0x0000000006850000-0x000000000685A000-memory.dmp

Filesize
40KB

Download
memory/2304-10-0x000000007474E000-0x000000007474F000-memory.dmp

Filesize
4KB

Download
memory/2304-11-0x0000000074740000-0x0000000074EF0000-memory.dmp

Filesize
7.7MB

Download
memory/2304-12-0x0000000006AF0000-0x0000000006BA2000-memory.dmp

Filesize
712KB

Download
memory/2304-13-0x0000000009110000-0x000000000917A000-memory.dmp

Filesize
424KB

Download
memory/2304-16-0x0000000074740000-0x0000000074EF0000-memory.dmp

Filesize
7.7MB

Download
memory/2304-2-0x0000000005030000-0x00000000050CC000-memory.dmp

Filesize
624KB

Download
memory/2304-6-0x0000000074740000-0x0000000074EF0000-memory.dmp

Filesize
7.7MB

Download
memory/2304-7-0x00000000052C0000-0x0000000005316000-memory.dmp

Filesize
344KB

Download
memory/2304-4-0x00000000050D0000-0x0000000005162000-memory.dmp

Filesize
584KB

Download
memory/2304-3-0x0000000005680000-0x0000000005C24000-memory.dmp

Filesize
5.6MB

Download
memory/2304-0-0x000000007474E000-0x000000007474F000-memory.dmp

Filesize
4KB

Download
memory/2624-26-0x00000000005A0000-0x00000000005AB000-memory.dmp

Filesize
44KB

Download
memory/2624-27-0x00000000005A0000-0x00000000005AB000-memory.dmp

Filesize
44KB

Download
memory/2624-28-0x0000000000500000-0x000000000052E000-memory.dmp

Filesize
184KB

Download
memory/3568-25-0x0000000002F70000-0x0000000003038000-memory.dmp

Filesize
800KB

Download
memory/3568-21-0x00000000084B0000-0x0000000008635000-memory.dmp

Filesize
1.5MB

Download
memory/3568-29-0x0000000002F70000-0x0000000003038000-memory.dmp

Filesize
800KB

Download
memory/3568-32-0x0000000007530000-0x00000000075E2000-memory.dmp

Filesize
712KB

Download
memory/3568-34-0x0000000007530000-0x00000000075E2000-memory.dmp

Filesize
712KB

Download
memory/3568-35-0x0000000007530000-0x00000000075E2000-memory.dmp

Filesize
712KB

Download

Analysis

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