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
behavioral1/memory/2164-3-0x0000000000840000-0x000000000084A000-memory.dmp	CustAttr

Formbook payload 3 IoCs

rat

resource	yara_rule
behavioral1/memory/2372-15-0x0000000000400000-0x000000000042E000-memory.dmp	formbook
behavioral1/memory/2372-19-0x0000000000400000-0x000000000042E000-memory.dmp	formbook
behavioral1/memory/2356-25-0x0000000000360000-0x000000000038E000-memory.dmp	formbook

Deletes itself 1 IoCs

pid	Process
2364	cmd.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2164 set thread context of 2372	2164	Quotation_2353882378.pdf.exe	29
PID 2372 set thread context of 1204	2372	Quotation_2353882378.pdf.exe	20
PID 2356 set thread context of 1204	2356	explorer.exe	20

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

Suspicious behavior: EnumeratesProcesses 13 IoCs

pid	Process
2164	Quotation_2353882378.pdf.exe
2164	Quotation_2353882378.pdf.exe
2164	Quotation_2353882378.pdf.exe
2372	Quotation_2353882378.pdf.exe
2372	Quotation_2353882378.pdf.exe
2356	explorer.exe
2356	explorer.exe
2356	explorer.exe
2356	explorer.exe
2356	explorer.exe
2356	explorer.exe
2356	explorer.exe
2356	explorer.exe

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
2372	Quotation_2353882378.pdf.exe
2372	Quotation_2353882378.pdf.exe
2372	Quotation_2353882378.pdf.exe
2356	explorer.exe
2356	explorer.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2164	Quotation_2353882378.pdf.exe
Token: SeDebugPrivilege	2372	Quotation_2353882378.pdf.exe
Token: SeDebugPrivilege	2356	explorer.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2164 wrote to memory of 2372	2164	Quotation_2353882378.pdf.exe	29
PID 2164 wrote to memory of 2372	2164	Quotation_2353882378.pdf.exe	29
PID 2164 wrote to memory of 2372	2164	Quotation_2353882378.pdf.exe	29
PID 2164 wrote to memory of 2372	2164	Quotation_2353882378.pdf.exe	29
PID 2164 wrote to memory of 2372	2164	Quotation_2353882378.pdf.exe	29
PID 2164 wrote to memory of 2372	2164	Quotation_2353882378.pdf.exe	29
PID 2164 wrote to memory of 2372	2164	Quotation_2353882378.pdf.exe	29
PID 1204 wrote to memory of 2356	1204	Explorer.EXE	30
PID 1204 wrote to memory of 2356	1204	Explorer.EXE	30
PID 1204 wrote to memory of 2356	1204	Explorer.EXE	30
PID 1204 wrote to memory of 2356	1204	Explorer.EXE	30
PID 2356 wrote to memory of 2364	2356	explorer.exe	31
PID 2356 wrote to memory of 2364	2356	explorer.exe	31
PID 2356 wrote to memory of 2364	2356	explorer.exe	31
PID 2356 wrote to memory of 2364	2356	explorer.exe	31

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1204
- 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:2164
- - 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:2372
- C:\Windows\SysWOW64\explorer.exe
  "C:\Windows\SysWOW64\explorer.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:2356
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\Quotation_2353882378.pdf.exe"
    3⤵
    - Deletes itself
    - System Location Discovery: System Language Discovery
    PID:2364

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/1204-22-0x0000000004A70000-0x0000000004B93000-memory.dmp

Filesize
1.1MB

Download
memory/1204-26-0x0000000004A70000-0x0000000004B93000-memory.dmp

Filesize
1.1MB

Download
memory/1204-27-0x0000000002C60000-0x0000000002D60000-memory.dmp

Filesize
1024KB

Download
memory/2164-8-0x0000000004970000-0x00000000049DA000-memory.dmp

Filesize
424KB

Download
memory/2164-4-0x0000000074370000-0x0000000074A5E000-memory.dmp

Filesize
6.9MB

Download
memory/2164-5-0x000000007437E000-0x000000007437F000-memory.dmp

Filesize
4KB

Download
memory/2164-6-0x0000000074370000-0x0000000074A5E000-memory.dmp

Filesize
6.9MB

Download
memory/2164-7-0x0000000005480000-0x0000000005532000-memory.dmp

Filesize
712KB

Download
memory/2164-3-0x0000000000840000-0x000000000084A000-memory.dmp

Filesize
40KB

Download
memory/2164-2-0x0000000074370000-0x0000000074A5E000-memory.dmp

Filesize
6.9MB

Download
memory/2164-0-0x000000007437E000-0x000000007437F000-memory.dmp

Filesize
4KB

Download
memory/2164-1-0x0000000000E10000-0x0000000000EF6000-memory.dmp

Filesize
920KB

Download
memory/2164-16-0x0000000074370000-0x0000000074A5E000-memory.dmp

Filesize
6.9MB

Download
memory/2356-25-0x0000000000360000-0x000000000038E000-memory.dmp

Filesize
184KB

Download
memory/2356-24-0x0000000000040000-0x00000000002C1000-memory.dmp

Filesize
2.5MB

Download
memory/2356-23-0x0000000000040000-0x00000000002C1000-memory.dmp

Filesize
2.5MB

Download
memory/2372-15-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/2372-19-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/2372-20-0x0000000000180000-0x0000000000194000-memory.dmp

Filesize
80KB

Download
memory/2372-17-0x0000000000A40000-0x0000000000D43000-memory.dmp

Filesize
3.0MB

Download
memory/2372-11-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/2372-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2372-9-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download

Analysis

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