formbook | 86e4d5f6e971a493c6d56fbdb71a4a6c6deaf7eca8c30f086bafba45159f8e22

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 6 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/336-67-0x0000000000400000-0x000000000042B000-memory.dmp	xloader
behavioral1/memory/336-68-0x000000000041F270-mapping.dmp	xloader
behavioral1/memory/336-75-0x0000000000400000-0x000000000042B000-memory.dmp	xloader
behavioral1/memory/336-79-0x0000000000400000-0x000000000042B000-memory.dmp	xloader
behavioral1/memory/1368-82-0x0000000000080000-0x00000000000AB000-memory.dmp	xloader
behavioral1/memory/1368-86-0x0000000000080000-0x00000000000AB000-memory.dmp	xloader

Adds policy Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

chkdsk.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	chkdsk.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\BX48F = "C:\\Program Files (x86)\\Cgralan\\msqdfl.exe"	chkdsk.exe

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

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 4 IoCs

Processes:

shipping document.exeRegSvcs.exechkdsk.exe

description	pid	process	target process
PID 1056 set thread context of 336	1056	shipping document.exe	RegSvcs.exe
PID 336 set thread context of 1220	336	RegSvcs.exe	Explorer.EXE
PID 336 set thread context of 1220	336	RegSvcs.exe	Explorer.EXE
PID 1368 set thread context of 1220	1368	chkdsk.exe	Explorer.EXE

Drops file in Program Files directory 1 IoCs

Processes:

chkdsk.exe

description ioc process

File opened for modification C:\Program Files (x86)\Cgralan\msqdfl.exe chkdsk.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

320 schtasks.exe
Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry
T1012

System Information Discovery
T1082

Processes:

chkdsk.exe

description ioc process

Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier chkdsk.exe

description	ioc	process
File opened for modification	C:\Program Files (x86)\Cgralan\msqdfl.exe	chkdsk.exe

pid	process
320	schtasks.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	chkdsk.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

chkdsk.exe

description	ioc	process
Key created	\Registry\User\S-1-5-21-1083475884-596052423-1669053738-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	chkdsk.exe

Suspicious behavior: EnumeratesProcesses 24 IoCs

Processes:

shipping document.exeRegSvcs.exepowershell.exechkdsk.exe

pid	process
1056	shipping document.exe
1056	shipping document.exe
336	RegSvcs.exe
336	RegSvcs.exe
1512	powershell.exe
336	RegSvcs.exe
1368	chkdsk.exe
1368	chkdsk.exe
1368	chkdsk.exe
1368	chkdsk.exe
1368	chkdsk.exe
1368	chkdsk.exe
1368	chkdsk.exe
1368	chkdsk.exe
1368	chkdsk.exe
1368	chkdsk.exe
1368	chkdsk.exe
1368	chkdsk.exe
1368	chkdsk.exe
1368	chkdsk.exe
1368	chkdsk.exe
1368	chkdsk.exe
1368	chkdsk.exe
1368	chkdsk.exe

Suspicious behavior: MapViewOfSection 7 IoCs

Processes:

RegSvcs.exechkdsk.exe

pid process

336 RegSvcs.exe
336 RegSvcs.exe
336 RegSvcs.exe
336 RegSvcs.exe
1368 chkdsk.exe
1368 chkdsk.exe
1368 chkdsk.exe

pid	process
336	RegSvcs.exe
336	RegSvcs.exe
336	RegSvcs.exe
336	RegSvcs.exe
1368	chkdsk.exe
1368	chkdsk.exe
1368	chkdsk.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

shipping document.exeRegSvcs.exepowershell.exechkdsk.exe

description	pid	process
Token: SeDebugPrivilege	1056	shipping document.exe
Token: SeDebugPrivilege	336	RegSvcs.exe
Token: SeDebugPrivilege	1512	powershell.exe
Token: SeDebugPrivilege	1368	chkdsk.exe

Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

Explorer.EXE

pid process

1220 Explorer.EXE
1220 Explorer.EXE
Suspicious use of SendNotifyMessage 2 IoCs

Processes:

Explorer.EXE

pid process

1220 Explorer.EXE
1220 Explorer.EXE

pid	process
1220	Explorer.EXE
1220	Explorer.EXE

pid	process
1220	Explorer.EXE
1220	Explorer.EXE

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

shipping document.exeRegSvcs.exechkdsk.exe

description	pid	process	target process
PID 1056 wrote to memory of 1512	1056	shipping document.exe	powershell.exe
PID 1056 wrote to memory of 1512	1056	shipping document.exe	powershell.exe
PID 1056 wrote to memory of 1512	1056	shipping document.exe	powershell.exe
PID 1056 wrote to memory of 1512	1056	shipping document.exe	powershell.exe
PID 1056 wrote to memory of 320	1056	shipping document.exe	schtasks.exe
PID 1056 wrote to memory of 320	1056	shipping document.exe	schtasks.exe
PID 1056 wrote to memory of 320	1056	shipping document.exe	schtasks.exe
PID 1056 wrote to memory of 320	1056	shipping document.exe	schtasks.exe
PID 1056 wrote to memory of 336	1056	shipping document.exe	RegSvcs.exe
PID 1056 wrote to memory of 336	1056	shipping document.exe	RegSvcs.exe
PID 1056 wrote to memory of 336	1056	shipping document.exe	RegSvcs.exe
PID 1056 wrote to memory of 336	1056	shipping document.exe	RegSvcs.exe
PID 1056 wrote to memory of 336	1056	shipping document.exe	RegSvcs.exe
PID 1056 wrote to memory of 336	1056	shipping document.exe	RegSvcs.exe
PID 1056 wrote to memory of 336	1056	shipping document.exe	RegSvcs.exe
PID 1056 wrote to memory of 336	1056	shipping document.exe	RegSvcs.exe
PID 1056 wrote to memory of 336	1056	shipping document.exe	RegSvcs.exe
PID 1056 wrote to memory of 336	1056	shipping document.exe	RegSvcs.exe
PID 336 wrote to memory of 1368	336	RegSvcs.exe	chkdsk.exe
PID 336 wrote to memory of 1368	336	RegSvcs.exe	chkdsk.exe
PID 336 wrote to memory of 1368	336	RegSvcs.exe	chkdsk.exe
PID 336 wrote to memory of 1368	336	RegSvcs.exe	chkdsk.exe
PID 1368 wrote to memory of 688	1368	chkdsk.exe	cmd.exe
PID 1368 wrote to memory of 688	1368	chkdsk.exe	cmd.exe
PID 1368 wrote to memory of 688	1368	chkdsk.exe	cmd.exe
PID 1368 wrote to memory of 688	1368	chkdsk.exe	cmd.exe
PID 1368 wrote to memory of 1040	1368	chkdsk.exe	Firefox.exe
PID 1368 wrote to memory of 1040	1368	chkdsk.exe	Firefox.exe
PID 1368 wrote to memory of 1040	1368	chkdsk.exe	Firefox.exe
PID 1368 wrote to memory of 1040	1368	chkdsk.exe	Firefox.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:1220

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:1056

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:1512

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\ylJHrC" /XML "C:\Users\Admin\AppData\Local\Temp\tmp6E1F.tmp"
3⤵
- Creates scheduled task(s)
PID:320

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
- Suspicious use of WriteProcessMemory
PID:336

C:\Windows\SysWOW64\chkdsk.exe
"C:\Windows\SysWOW64\chkdsk.exe"
4⤵
- Adds policy Run key to start application
- Suspicious use of SetThreadContext
- Drops file in Program Files directory
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1368

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
5⤵
PID:688

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
5⤵
PID:1040

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

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

4

T1082

Virtualization/Sandbox Evasion

2

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp6E1F.tmp
Filesize
1KB

MD5
8d90d1cf57addf10ccd50715c1376e78

SHA1
cffc59ee9f80627c3a84afabb3e37a789804a2d3

SHA256
4109231c719120236b9acc8d5e71e701eda99c1a810f6e8cecd80ab3c9e5fdb7

SHA512
7344eb7702628c3d004b60143a7ce23a34f2006018a1d7a86b6189c8c0ae6e61de17dcef149139707e2c75ee062f3e6a132a09990c0683dcee785faf17032719

Download Submit
memory/320-60-0x0000000000000000-mapping.dmp

Download
memory/336-72-0x0000000000A60000-0x0000000000D63000-memory.dmp

Filesize
3.0MB

Download
memory/336-79-0x0000000000400000-0x000000000042B000-memory.dmp

Filesize
172KB

Download
memory/336-76-0x0000000000230000-0x0000000000241000-memory.dmp

Filesize
68KB

Download
memory/336-75-0x0000000000400000-0x000000000042B000-memory.dmp

Filesize
172KB

Download
memory/336-73-0x00000000001F0000-0x0000000000201000-memory.dmp

Filesize
68KB

Download
memory/336-68-0x000000000041F270-mapping.dmp

Download
memory/336-67-0x0000000000400000-0x000000000042B000-memory.dmp

Filesize
172KB

Download
memory/336-64-0x0000000000400000-0x000000000042B000-memory.dmp

Filesize
172KB

Download
memory/336-65-0x0000000000400000-0x000000000042B000-memory.dmp

Filesize
172KB

Download
memory/688-80-0x0000000000000000-mapping.dmp

Download
memory/1056-63-0x00000000047C0000-0x00000000047F2000-memory.dmp

Filesize
200KB

Download
memory/1056-55-0x00000000764C1000-0x00000000764C3000-memory.dmp

Filesize
8KB

Download
memory/1056-57-0x00000000002E0000-0x00000000002EA000-memory.dmp

Filesize
40KB

Download
memory/1056-56-0x00000000002B0000-0x00000000002CC000-memory.dmp

Filesize
112KB

Download
memory/1056-58-0x00000000046E0000-0x000000000474A000-memory.dmp

Filesize
424KB

Download
memory/1056-54-0x0000000000F80000-0x0000000001008000-memory.dmp

Filesize
544KB

Download
memory/1220-85-0x0000000004DB0000-0x0000000004F2B000-memory.dmp

Filesize
1.5MB

Download
memory/1220-74-0x0000000004B20000-0x0000000004CA6000-memory.dmp

Filesize
1.5MB

Download
memory/1220-87-0x0000000004DB0000-0x0000000004F2B000-memory.dmp

Filesize
1.5MB

Download
memory/1220-77-0x0000000004CB0000-0x0000000004DA3000-memory.dmp

Filesize
972KB

Download
memory/1368-78-0x0000000000000000-mapping.dmp

Download
memory/1368-81-0x0000000000D70000-0x0000000000D77000-memory.dmp

Filesize
28KB

Download
memory/1368-82-0x0000000000080000-0x00000000000AB000-memory.dmp

Filesize
172KB

Download
memory/1368-83-0x0000000002180000-0x0000000002483000-memory.dmp

Filesize
3.0MB

Download
memory/1368-84-0x0000000000550000-0x00000000005E0000-memory.dmp

Filesize
576KB

Download
memory/1368-86-0x0000000000080000-0x00000000000AB000-memory.dmp

Filesize
172KB

Download
memory/1512-71-0x000000006E2C0000-0x000000006E86B000-memory.dmp

Filesize
5.7MB

Download
memory/1512-69-0x000000006E2C0000-0x000000006E86B000-memory.dmp

Filesize
5.7MB

Download
memory/1512-59-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads