formbook | 1601b9784608dbf5766c22a1c8e374a0982cc4a87071a4b1f96b527fe90dbf76

General

Target

3.exe
Size

716KB
MD5

6cfd9e4c91e40289c1336092f523fbb9
SHA1

bf2f3761187cd41996565fae116392e241e2c3d4
SHA256

bc85bf351d0f875cab0a1e3bd802665cdd6ed1afe837ab9bdf3d37aeac1e5fe9
SHA512

eb58e3ba01e8350c74e0ba90f2a564dbc196191f3dba91519ef29eaec6530bdfa561526f8dc584d402d93fa6d50558b456264d12b420378c1026159ae7b054e9
SSDEEP

12288:cj3tuU9X6XyGWHBYg/8iTCX1aZBFXXQO186Nvy6kOnPMD6RCsoP4+JW22dS8gfod:e3tLJ65WhX8iTwaZfw9xAUDC8c

Score

10^/10

formbook 4kx discovery persistence rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

4kx

Decoy

tenghuab2b.com

docperkins.com

xn--8qvz5k.com

wahgig.com

lesfantomesdelopera.com

ableaccessdesign.com

fraubergtour.com

conjoo.com

colemix.com

ijmpennsylvania.com

viagraboysdownload.com

primaryancientgreeks.com

mavericktourist.com

cezhav.com

zapjevajlive.info

yvpol.com

moonoka.com

pengodam.com

prubobhatton.net

exanyu.info

Signatures

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

Formbook payload 2 IoCs

rat

resource	yara_rule
behavioral2/memory/4456-14-0x0000000000400000-0x000000000042D000-memory.dmp	formbook
behavioral2/memory/4456-19-0x0000000000400000-0x000000000042D000-memory.dmp	formbook

Adds policy Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	cscript.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\SPXDVTZX = "C:\\Program Files (x86)\\Xzhd0\\tx4plrbclyl.exe"	cscript.exe

Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 4272 set thread context of 4456	4272	3.exe	100
PID 4456 set thread context of 3452	4456	3.exe	56
PID 1524 set thread context of 3452	1524	cscript.exe	56

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Xzhd0\tx4plrbclyl.exe	cscript.exe

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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	3.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cscript.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\Registry\User\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	cscript.exe

Suspicious behavior: EnumeratesProcesses 41 IoCs

pid	Process
4272	3.exe
4272	3.exe
4272	3.exe
4456	3.exe
4456	3.exe
4456	3.exe
4456	3.exe
1524	cscript.exe
1524	cscript.exe
1524	cscript.exe
1524	cscript.exe
1524	cscript.exe
1524	cscript.exe
1524	cscript.exe
1524	cscript.exe
1524	cscript.exe
1524	cscript.exe
1524	cscript.exe
1524	cscript.exe
1524	cscript.exe
1524	cscript.exe
1524	cscript.exe
1524	cscript.exe
1524	cscript.exe
1524	cscript.exe
1524	cscript.exe
1524	cscript.exe
1524	cscript.exe
1524	cscript.exe
1524	cscript.exe
1524	cscript.exe
1524	cscript.exe
1524	cscript.exe
1524	cscript.exe
1524	cscript.exe
1524	cscript.exe
1524	cscript.exe
1524	cscript.exe
1524	cscript.exe
1524	cscript.exe
1524	cscript.exe

Suspicious behavior: MapViewOfSection 7 IoCs

pid	Process
4456	3.exe
4456	3.exe
4456	3.exe
1524	cscript.exe
1524	cscript.exe
1524	cscript.exe
1524	cscript.exe

Suspicious use of AdjustPrivilegeToken 7 IoCs

description	pid	Process
Token: SeDebugPrivilege	4272	3.exe
Token: SeDebugPrivilege	4456	3.exe
Token: SeDebugPrivilege	1524	cscript.exe
Token: SeShutdownPrivilege	3452	Explorer.EXE
Token: SeCreatePagefilePrivilege	3452	Explorer.EXE
Token: SeShutdownPrivilege	3452	Explorer.EXE
Token: SeCreatePagefilePrivilege	3452	Explorer.EXE

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 4272 wrote to memory of 4456	4272	3.exe	100
PID 4272 wrote to memory of 4456	4272	3.exe	100
PID 4272 wrote to memory of 4456	4272	3.exe	100
PID 4272 wrote to memory of 4456	4272	3.exe	100
PID 4272 wrote to memory of 4456	4272	3.exe	100
PID 4272 wrote to memory of 4456	4272	3.exe	100
PID 3452 wrote to memory of 1524	3452	Explorer.EXE	101
PID 3452 wrote to memory of 1524	3452	Explorer.EXE	101
PID 3452 wrote to memory of 1524	3452	Explorer.EXE	101
PID 1524 wrote to memory of 4704	1524	cscript.exe	102
PID 1524 wrote to memory of 4704	1524	cscript.exe	102
PID 1524 wrote to memory of 4704	1524	cscript.exe	102
PID 1524 wrote to memory of 4180	1524	cscript.exe	104
PID 1524 wrote to memory of 4180	1524	cscript.exe	104
PID 1524 wrote to memory of 4180	1524	cscript.exe	104
PID 1524 wrote to memory of 2652	1524	cscript.exe	106
PID 1524 wrote to memory of 2652	1524	cscript.exe	106
PID 1524 wrote to memory of 2652	1524	cscript.exe	106

System policy modification 1 TTPs 1 IoCs

evasion

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer	cscript.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3452
- C:\Users\Admin\AppData\Local\Temp\3.exe
  "C:\Users\Admin\AppData\Local\Temp\3.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4272
- - C:\Users\Admin\AppData\Local\Temp\3.exe
    "C:\Users\Admin\AppData\Local\Temp\3.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:4456
- C:\Windows\SysWOW64\cscript.exe
  "C:\Windows\SysWOW64\cscript.exe"
  2⤵
  - Adds policy Run key to start application
  - Suspicious use of SetThreadContext
  - Drops file in Program Files directory
  - System Location Discovery: System Language Discovery
  - Modifies Internet Explorer settings
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  - System policy modification
  PID:1524
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\3.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:4704
- - C:\Windows\SysWOW64\cmd.exe
    /c copy "C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Login Data" "C:\Users\Admin\AppData\Local\Temp\DB1" /V
    3⤵
    - System Location Discovery: System Language Discovery
    PID:4180
- - C:\Program Files\Mozilla Firefox\Firefox.exe
    "C:\Program Files\Mozilla Firefox\Firefox.exe"
    3⤵
    PID:2652

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

3

T1112

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\DB1

Filesize
40KB

MD5
a182561a527f929489bf4b8f74f65cd7

SHA1
8cd6866594759711ea1836e86a5b7ca64ee8911f

SHA256
42aad7886965428a941508b776a666a4450eb658cb90e80fae1e7457fc71f914

SHA512
9bc3bf5a82f6f057e873adebd5b7a4c64adef966537ab9c565fe7c4bb3582e2e485ff993d5ab8a6002363231958fabd0933b48811371b8c155eaa74592b66558

Download Submit
memory/1524-23-0x0000000000C70000-0x0000000000C97000-memory.dmp

Filesize
156KB

Download
memory/1524-22-0x0000000000C70000-0x0000000000C97000-memory.dmp

Filesize
156KB

Download
memory/3452-21-0x00000000028A0000-0x00000000029C4000-memory.dmp

Filesize
1.1MB

Download
memory/3452-31-0x0000000007DB0000-0x0000000007EF8000-memory.dmp

Filesize
1.3MB

Download
memory/3452-29-0x0000000007DB0000-0x0000000007EF8000-memory.dmp

Filesize
1.3MB

Download
memory/3452-28-0x0000000007DB0000-0x0000000007EF8000-memory.dmp

Filesize
1.3MB

Download
memory/3452-24-0x00000000028A0000-0x00000000029C4000-memory.dmp

Filesize
1.1MB

Download
memory/4272-12-0x00000000062D0000-0x0000000006324000-memory.dmp

Filesize
336KB

Download
memory/4272-6-0x0000000005D80000-0x0000000005E12000-memory.dmp

Filesize
584KB

Download
memory/4272-10-0x000000007443E000-0x000000007443F000-memory.dmp

Filesize
4KB

Download
memory/4272-11-0x0000000074430000-0x0000000074BE0000-memory.dmp

Filesize
7.7MB

Download
memory/4272-0-0x000000007443E000-0x000000007443F000-memory.dmp

Filesize
4KB

Download
memory/4272-13-0x0000000006990000-0x00000000069C6000-memory.dmp

Filesize
216KB

Download
memory/4272-1-0x0000000000E10000-0x0000000000ECA000-memory.dmp

Filesize
744KB

Download
memory/4272-16-0x0000000074430000-0x0000000074BE0000-memory.dmp

Filesize
7.7MB

Download
memory/4272-2-0x0000000005810000-0x000000000586E000-memory.dmp

Filesize
376KB

Download
memory/4272-3-0x0000000005CE0000-0x0000000005D7C000-memory.dmp

Filesize
624KB

Download
memory/4272-4-0x0000000074430000-0x0000000074BE0000-memory.dmp

Filesize
7.7MB

Download
memory/4272-8-0x0000000005E20000-0x0000000005E76000-memory.dmp

Filesize
344KB

Download
memory/4272-7-0x0000000005A10000-0x0000000005A1A000-memory.dmp

Filesize
40KB

Download
memory/4272-9-0x0000000005CD0000-0x0000000005CD8000-memory.dmp

Filesize
32KB

Download
memory/4272-5-0x0000000006330000-0x00000000068D4000-memory.dmp

Filesize
5.6MB

Download
memory/4456-20-0x0000000001260000-0x0000000001274000-memory.dmp

Filesize
80KB

Download
memory/4456-19-0x0000000000400000-0x000000000042D000-memory.dmp

Filesize
180KB

Download
memory/4456-17-0x0000000000EC0000-0x000000000120A000-memory.dmp

Filesize
3.3MB

Download
memory/4456-14-0x0000000000400000-0x000000000042D000-memory.dmp

Filesize
180KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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