formbook | 576d080b4cab07bd5c3ef3e5d6a222b91744368ed837a3e56eb89772c1b5a1de

General

Target

shipping document.exe
Size

521KB
MD5

557350a46a849eb9ae8bc28a629bf3d5
SHA1

8a773187553730b62bc9ba58457b8a97523f953e
SHA256

576d080b4cab07bd5c3ef3e5d6a222b91744368ed837a3e56eb89772c1b5a1de
SHA512

aee4d4881f1d20b7837f690291702c7ead7c6900f0a68fa29f6c5fbd06fc91d7d13f893b70543c172d3a3732d47262aeca3209af81cc396eddc3dd3412ccad64

Score

10^/10

formbook xloader pdrq evasion loader persistence rat spyware stealer suricata trojan

Malware Config

Extracted

Family

xloader

Version

2.6

Campaign

pdrq

Decoy

welchsunstar.com

mppservicesllc.com

wiresofteflon.com

brabov.xyz

compnonoch.site

yourbuilderworks.com

iamsamirahman.com

eriqoes.com

eastudio.design

skyearth-est.com

teethfitness.com

razaancreates.com

shfbfs.com

joyfulbrokekids.com

kjbolden.com

howirep.com

deedeesmainecoons.website

e-powair.com

aheatea.com

shalfey0009.xyz

Signatures

Formbook
Formbook is a data stealing malware which is capable of stealing data.
trojan spyware stealer formbook
Xloader
Xloader is a rebranded version of Formbook malware.
loader xloader
suricata: ET MALWARE FormBook CnC Checkin (GET)
suricata: ET MALWARE FormBook CnC Checkin (GET)
suricata
Looks for VirtualBox Guest Additions in registry 2 TTPs 1 IoCs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497

Processes:

shipping document.exe

description ioc process

Key opened \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Oracle\VirtualBox Guest Additions shipping document.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Oracle\VirtualBox Guest Additions	shipping document.exe

Xloader Payload 5 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/1568-67-0x0000000000400000-0x000000000042B000-memory.dmp	xloader
behavioral1/memory/1568-68-0x000000000041F270-mapping.dmp	xloader
behavioral1/memory/1568-71-0x0000000000400000-0x000000000042B000-memory.dmp	xloader
behavioral1/memory/1724-79-0x00000000000F0000-0x000000000011B000-memory.dmp	xloader
behavioral1/memory/1724-83-0x00000000000F0000-0x000000000011B000-memory.dmp	xloader

Looks for VMWare Tools registry key 2 TTPs 1 IoCs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497

Processes:

shipping document.exe

description ioc process

Key opened \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\VMware, Inc.\VMware Tools shipping document.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\VMware, Inc.\VMware Tools	shipping document.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

Processes:

shipping document.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	shipping document.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	shipping document.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

cmstp.exe

description	ioc	process
Key created	\Registry\Machine\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run	cmstp.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\TR_TNHA8WT = "C:\\Program Files (x86)\\Bbbc\\winjjkdu.exe"	cmstp.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

Processes:

shipping document.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	shipping document.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0	shipping document.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

shipping document.exeRegSvcs.execmstp.exe

description	pid	process	target process
PID 1948 set thread context of 1568	1948	shipping document.exe	RegSvcs.exe
PID 1568 set thread context of 1256	1568	RegSvcs.exe	Explorer.EXE
PID 1724 set thread context of 1256	1724	cmstp.exe	Explorer.EXE

Drops file in Program Files directory 1 IoCs

Processes:

cmstp.exe

description ioc process

File opened for modification C:\Program Files (x86)\Bbbc\winjjkdu.exe cmstp.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task
T1053

Processes:

schtasks.exe

pid process

1764 schtasks.exe

description	ioc	process
File opened for modification	C:\Program Files (x86)\Bbbc\winjjkdu.exe	cmstp.exe

pid	process
1764	schtasks.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

cmstp.exe

description	ioc	process
Key created	\Registry\User\S-1-5-21-2277218442-1199762539-2004043321-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	cmstp.exe

Suspicious behavior: EnumeratesProcesses 24 IoCs

Processes:

shipping document.exepowershell.exeRegSvcs.execmstp.exe

pid	process
1948	shipping document.exe
1948	shipping document.exe
880	powershell.exe
1568	RegSvcs.exe
1568	RegSvcs.exe
1724	cmstp.exe
1724	cmstp.exe
1724	cmstp.exe
1724	cmstp.exe
1724	cmstp.exe
1724	cmstp.exe
1724	cmstp.exe
1724	cmstp.exe
1724	cmstp.exe
1724	cmstp.exe
1724	cmstp.exe
1724	cmstp.exe
1724	cmstp.exe
1724	cmstp.exe
1724	cmstp.exe
1724	cmstp.exe
1724	cmstp.exe
1724	cmstp.exe
1724	cmstp.exe

Suspicious behavior: MapViewOfSection 7 IoCs

Processes:

RegSvcs.execmstp.exe

pid process

1568 RegSvcs.exe
1568 RegSvcs.exe
1568 RegSvcs.exe
1724 cmstp.exe
1724 cmstp.exe
1724 cmstp.exe
1724 cmstp.exe

pid	process
1568	RegSvcs.exe
1568	RegSvcs.exe
1568	RegSvcs.exe
1724	cmstp.exe
1724	cmstp.exe
1724	cmstp.exe
1724	cmstp.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

shipping document.exepowershell.exeRegSvcs.execmstp.exe

description	pid	process
Token: SeDebugPrivilege	1948	shipping document.exe
Token: SeDebugPrivilege	880	powershell.exe
Token: SeDebugPrivilege	1568	RegSvcs.exe
Token: SeDebugPrivilege	1724	cmstp.exe

Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

Explorer.EXE

pid process

1256 Explorer.EXE
1256 Explorer.EXE
Suspicious use of SendNotifyMessage 2 IoCs

Processes:

Explorer.EXE

pid process

1256 Explorer.EXE
1256 Explorer.EXE

pid	process
1256	Explorer.EXE
1256	Explorer.EXE

pid	process
1256	Explorer.EXE
1256	Explorer.EXE

Suspicious use of WriteProcessMemory 34 IoCs

Processes:

shipping document.exeExplorer.EXEcmstp.exe

description	pid	process	target process
PID 1948 wrote to memory of 880	1948	shipping document.exe	powershell.exe
PID 1948 wrote to memory of 880	1948	shipping document.exe	powershell.exe
PID 1948 wrote to memory of 880	1948	shipping document.exe	powershell.exe
PID 1948 wrote to memory of 880	1948	shipping document.exe	powershell.exe
PID 1948 wrote to memory of 1764	1948	shipping document.exe	schtasks.exe
PID 1948 wrote to memory of 1764	1948	shipping document.exe	schtasks.exe
PID 1948 wrote to memory of 1764	1948	shipping document.exe	schtasks.exe
PID 1948 wrote to memory of 1764	1948	shipping document.exe	schtasks.exe
PID 1948 wrote to memory of 1568	1948	shipping document.exe	RegSvcs.exe
PID 1948 wrote to memory of 1568	1948	shipping document.exe	RegSvcs.exe
PID 1948 wrote to memory of 1568	1948	shipping document.exe	RegSvcs.exe
PID 1948 wrote to memory of 1568	1948	shipping document.exe	RegSvcs.exe
PID 1948 wrote to memory of 1568	1948	shipping document.exe	RegSvcs.exe
PID 1948 wrote to memory of 1568	1948	shipping document.exe	RegSvcs.exe
PID 1948 wrote to memory of 1568	1948	shipping document.exe	RegSvcs.exe
PID 1948 wrote to memory of 1568	1948	shipping document.exe	RegSvcs.exe
PID 1948 wrote to memory of 1568	1948	shipping document.exe	RegSvcs.exe
PID 1948 wrote to memory of 1568	1948	shipping document.exe	RegSvcs.exe
PID 1256 wrote to memory of 1724	1256	Explorer.EXE	cmstp.exe
PID 1256 wrote to memory of 1724	1256	Explorer.EXE	cmstp.exe
PID 1256 wrote to memory of 1724	1256	Explorer.EXE	cmstp.exe
PID 1256 wrote to memory of 1724	1256	Explorer.EXE	cmstp.exe
PID 1256 wrote to memory of 1724	1256	Explorer.EXE	cmstp.exe
PID 1256 wrote to memory of 1724	1256	Explorer.EXE	cmstp.exe
PID 1256 wrote to memory of 1724	1256	Explorer.EXE	cmstp.exe
PID 1724 wrote to memory of 1864	1724	cmstp.exe	cmd.exe
PID 1724 wrote to memory of 1864	1724	cmstp.exe	cmd.exe
PID 1724 wrote to memory of 1864	1724	cmstp.exe	cmd.exe
PID 1724 wrote to memory of 1864	1724	cmstp.exe	cmd.exe
PID 1724 wrote to memory of 872	1724	cmstp.exe	Firefox.exe
PID 1724 wrote to memory of 872	1724	cmstp.exe	Firefox.exe
PID 1724 wrote to memory of 872	1724	cmstp.exe	Firefox.exe
PID 1724 wrote to memory of 872	1724	cmstp.exe	Firefox.exe
PID 1724 wrote to memory of 872	1724	cmstp.exe	Firefox.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1256
- C:\Users\Admin\AppData\Local\Temp\shipping document.exe
  "C:\Users\Admin\AppData\Local\Temp\shipping document.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
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1948
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\ylJHrC.exe"
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:880
- - C:\Windows\SysWOW64\schtasks.exe
    "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\ylJHrC" /XML "C:\Users\Admin\AppData\Local\Temp\tmp5320.tmp"
    3⤵
    - Creates scheduled task(s)
    PID:1764
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:1568
- C:\Windows\SysWOW64\cmstp.exe
  "C:\Windows\SysWOW64\cmstp.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious use of SetThreadContext
  - Drops file in Program Files directory
  - Modifies Internet Explorer settings
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1724
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
    3⤵
    PID:1864
- - C:\Program Files\Mozilla Firefox\Firefox.exe
    "C:\Program Files\Mozilla Firefox\Firefox.exe"
    3⤵
    PID:872

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Registry Run Keys / Startup Folder

Scheduled Task

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Modify Registry

2

T1112

Virtualization/Sandbox Evasion

2

T1497

Credential Access

Credentials in Files

1

T1081

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

3

T1082

Virtualization/Sandbox Evasion

2

T1497

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\tmp5320.tmp

Filesize
1KB

MD5
76528946f81f9a9f024ad894a7111791

SHA1
db8457138b370b16eae78188fe78afd6423d53fe

SHA256
60236db418b06321513ab90aa40899cd9b9587cfdd05cea97e60302d0f2277ec

SHA512
5d473a9cc12220e63111965462df7adfb8c03b297beaccedbdd0444413b9ad0b7502f4c89150e434fe65278ab4095327516308aced3c13cd686d84e293b7047f

Download Submit
memory/880-70-0x000000006E810000-0x000000006EDBB000-memory.dmp

Filesize
5.7MB

Download
memory/880-59-0x0000000000000000-mapping.dmp

Download
memory/1256-84-0x00000000068F0000-0x0000000006A4B000-memory.dmp

Filesize
1.4MB

Download
memory/1256-82-0x00000000068F0000-0x0000000006A4B000-memory.dmp

Filesize
1.4MB

Download
memory/1256-74-0x0000000004320000-0x000000000442A000-memory.dmp

Filesize
1.0MB

Download
memory/1568-72-0x0000000000A20000-0x0000000000D23000-memory.dmp

Filesize
3.0MB

Download
memory/1568-73-0x00000000001A0000-0x00000000001B1000-memory.dmp

Filesize
68KB

Download
memory/1568-71-0x0000000000400000-0x000000000042B000-memory.dmp

Filesize
172KB

Download
memory/1568-65-0x0000000000400000-0x000000000042B000-memory.dmp

Filesize
172KB

Download
memory/1568-64-0x0000000000400000-0x000000000042B000-memory.dmp

Filesize
172KB

Download
memory/1568-67-0x0000000000400000-0x000000000042B000-memory.dmp

Filesize
172KB

Download
memory/1568-68-0x000000000041F270-mapping.dmp

Download
memory/1724-75-0x0000000000000000-mapping.dmp

Download
memory/1724-81-0x0000000001D80000-0x0000000001E10000-memory.dmp

Filesize
576KB

Download
memory/1724-83-0x00000000000F0000-0x000000000011B000-memory.dmp

Filesize
172KB

Download
memory/1724-80-0x0000000002050000-0x0000000002353000-memory.dmp

Filesize
3.0MB

Download
memory/1724-79-0x00000000000F0000-0x000000000011B000-memory.dmp

Filesize
172KB

Download
memory/1724-78-0x0000000000640000-0x0000000000658000-memory.dmp

Filesize
96KB

Download
memory/1764-60-0x0000000000000000-mapping.dmp

Download
memory/1864-77-0x0000000000000000-mapping.dmp

Download
memory/1948-54-0x0000000000A60000-0x0000000000AE8000-memory.dmp

Filesize
544KB

Download
memory/1948-57-0x0000000000550000-0x000000000055A000-memory.dmp

Filesize
40KB

Download
memory/1948-58-0x0000000005B00000-0x0000000005B6A000-memory.dmp

Filesize
424KB

Download
memory/1948-63-0x0000000000A30000-0x0000000000A62000-memory.dmp

Filesize
200KB

Download
memory/1948-56-0x0000000000420000-0x000000000043C000-memory.dmp

Filesize
112KB

Download
memory/1948-55-0x00000000754A1000-0x00000000754A3000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads