formbook | ee86c7ff7a97b1a9a3ea3e7c56ba8e49f3f8e161e90c46cb3523fc91e7f20bef

General

Target

shipping docs.exe
Size

625KB
MD5

0f72bcc0a965ce4826e4948885261887
SHA1

64617230ee1b2fdfaeff5eecae0eef05b4382ffc
SHA256

ee86c7ff7a97b1a9a3ea3e7c56ba8e49f3f8e161e90c46cb3523fc91e7f20bef
SHA512

70465ab981b3b2954c4760415af1c03348ed112fbaad128d8f6ef09a55f18603a55e1adc42c09002ab072128d1b9c0532d0e3b1041f161879d1f9111a70c54b7

Score

10^/10

formbook xloader a8hq loader persistence rat spyware stealer suricata trojan

Malware Config

Extracted

Family

xloader

Version

2.6

Campaign

a8hq

Decoy

veteransductcleaning.com

beajtjunkies.com

houseofascofi.com

scottsdalemediator.com

atelyadesign.com

profitcase.pro

imtokenio.club

qinglingpai.com

bigsmile-meal.net

daytonlivestream.com

aspiradores10.online

ytybs120.com

hdatelier.com

bearpierce.com

yeson28ca.com

booklearner.com

m8j9.club

mmophamthinhlegend.space

hq4a7o6zb.com

sophiadaki.online

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
suricata: ET MALWARE FormBook CnC Checkin (POST) M2
suricata: ET MALWARE FormBook CnC Checkin (POST) M2
suricata

Xloader Payload 4 IoCs

rat

Processes:

resource	yara_rule
behavioral2/memory/4396-136-0x0000000000400000-0x000000000042B000-memory.dmp	xloader
behavioral2/memory/4396-138-0x0000000000400000-0x000000000042B000-memory.dmp	xloader
behavioral2/memory/4732-144-0x0000000000910000-0x000000000093B000-memory.dmp	xloader
behavioral2/memory/4732-149-0x0000000000910000-0x000000000093B000-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\DLJ8X6SH1NY = "C:\\Program Files (x86)\\V8pg4d\\zpxdm5jm.exe"	chkdsk.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

Suspicious use of SetThreadContext 3 IoCs

Processes:

shipping docs.exeshipping docs.exechkdsk.exe

description	pid	process	target process
PID 1616 set thread context of 4396	1616	shipping docs.exe	shipping docs.exe
PID 4396 set thread context of 3168	4396	shipping docs.exe	Explorer.EXE
PID 4732 set thread context of 3168	4732	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)\V8pg4d\zpxdm5jm.exe chkdsk.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)\V8pg4d\zpxdm5jm.exe	chkdsk.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-1-5-21-3751123196-3323558407-1869646069-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	chkdsk.exe

Modifies registry class 3 IoCs

Processes:

Explorer.EXE

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{4336a54d-038b-4685-ab02-99bb52d3fb8b}\Instance\	Explorer.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	Explorer.EXE
Key created	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance\	Explorer.EXE

Suspicious behavior: EnumeratesProcesses 46 IoCs

Processes:

shipping docs.exechkdsk.exe

pid	process
4396	shipping docs.exe
4396	shipping docs.exe
4396	shipping docs.exe
4396	shipping docs.exe
4732	chkdsk.exe
4732	chkdsk.exe
4732	chkdsk.exe
4732	chkdsk.exe
4732	chkdsk.exe
4732	chkdsk.exe
4732	chkdsk.exe
4732	chkdsk.exe
4732	chkdsk.exe
4732	chkdsk.exe
4732	chkdsk.exe
4732	chkdsk.exe
4732	chkdsk.exe
4732	chkdsk.exe
4732	chkdsk.exe
4732	chkdsk.exe
4732	chkdsk.exe
4732	chkdsk.exe
4732	chkdsk.exe
4732	chkdsk.exe
4732	chkdsk.exe
4732	chkdsk.exe
4732	chkdsk.exe
4732	chkdsk.exe
4732	chkdsk.exe
4732	chkdsk.exe
4732	chkdsk.exe
4732	chkdsk.exe
4732	chkdsk.exe
4732	chkdsk.exe
4732	chkdsk.exe
4732	chkdsk.exe
4732	chkdsk.exe
4732	chkdsk.exe
4732	chkdsk.exe
4732	chkdsk.exe
4732	chkdsk.exe
4732	chkdsk.exe
4732	chkdsk.exe
4732	chkdsk.exe
4732	chkdsk.exe
4732	chkdsk.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

3168 Explorer.EXE
Suspicious behavior: MapViewOfSection 7 IoCs

Processes:

shipping docs.exechkdsk.exe

pid process

4396 shipping docs.exe
4396 shipping docs.exe
4396 shipping docs.exe
4732 chkdsk.exe
4732 chkdsk.exe
4732 chkdsk.exe
4732 chkdsk.exe

pid	process
3168	Explorer.EXE

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

shipping docs.exechkdsk.exeExplorer.EXE

description	pid	process
Token: SeDebugPrivilege	4396	shipping docs.exe
Token: SeDebugPrivilege	4732	chkdsk.exe
Token: SeShutdownPrivilege	3168	Explorer.EXE
Token: SeCreatePagefilePrivilege	3168	Explorer.EXE

Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

Explorer.EXE

pid process

3168 Explorer.EXE
3168 Explorer.EXE

pid	process
3168	Explorer.EXE
3168	Explorer.EXE

Suspicious use of WriteProcessMemory 21 IoCs

Processes:

shipping docs.exeExplorer.EXEchkdsk.exe

description	pid	process	target process
PID 1616 wrote to memory of 4396	1616	shipping docs.exe	shipping docs.exe
PID 1616 wrote to memory of 4396	1616	shipping docs.exe	shipping docs.exe
PID 1616 wrote to memory of 4396	1616	shipping docs.exe	shipping docs.exe
PID 1616 wrote to memory of 4396	1616	shipping docs.exe	shipping docs.exe
PID 1616 wrote to memory of 4396	1616	shipping docs.exe	shipping docs.exe
PID 1616 wrote to memory of 4396	1616	shipping docs.exe	shipping docs.exe
PID 3168 wrote to memory of 4732	3168	Explorer.EXE	chkdsk.exe
PID 3168 wrote to memory of 4732	3168	Explorer.EXE	chkdsk.exe
PID 3168 wrote to memory of 4732	3168	Explorer.EXE	chkdsk.exe
PID 4732 wrote to memory of 4672	4732	chkdsk.exe	cmd.exe
PID 4732 wrote to memory of 4672	4732	chkdsk.exe	cmd.exe
PID 4732 wrote to memory of 4672	4732	chkdsk.exe	cmd.exe
PID 4732 wrote to memory of 2368	4732	chkdsk.exe	cmd.exe
PID 4732 wrote to memory of 2368	4732	chkdsk.exe	cmd.exe
PID 4732 wrote to memory of 2368	4732	chkdsk.exe	cmd.exe
PID 4732 wrote to memory of 3848	4732	chkdsk.exe	cmd.exe
PID 4732 wrote to memory of 3848	4732	chkdsk.exe	cmd.exe
PID 4732 wrote to memory of 3848	4732	chkdsk.exe	cmd.exe
PID 4732 wrote to memory of 4888	4732	chkdsk.exe	Firefox.exe
PID 4732 wrote to memory of 4888	4732	chkdsk.exe	Firefox.exe
PID 4732 wrote to memory of 4888	4732	chkdsk.exe	Firefox.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Modifies registry class
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:3168

C:\Users\Admin\AppData\Local\Temp\shipping docs.exe
"C:\Users\Admin\AppData\Local\Temp\shipping docs.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1616

C:\Users\Admin\AppData\Local\Temp\shipping docs.exe
"{path}"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:4396

C:\Windows\SysWOW64\chkdsk.exe
"C:\Windows\SysWOW64\chkdsk.exe"
2⤵
- 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:4732

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\shipping docs.exe"
3⤵
PID:4672

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⤵
PID:2368

C:\Windows\SysWOW64\cmd.exe
/c copy "C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Login Data" "C:\Users\Admin\AppData\Local\Temp\DB1" /V
3⤵
PID:3848

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:4888

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

2

T1112

Credential Access

Credentials in Files

1

T1081

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

1

T1005

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\DB1
Filesize
40KB

MD5
b608d407fc15adea97c26936bc6f03f6

SHA1
953e7420801c76393902c0d6bb56148947e41571

SHA256
b281ce54125d4250a80f48fcc02a8eea53f2c35c3b726e2512c3d493da0013bf

SHA512
cc96ddf4bf90d6aaa9d86803cb2aa30cd8e9b295aee1bd5544b88aeab63dc60bb1d4641e846c9771bab51aabbfbcd984c6d3ee83b96f5b65d09c0841d464b9e4

Download Submit
C:\Users\Admin\AppData\Local\Temp\DB1
Filesize
48KB

MD5
349e6eb110e34a08924d92f6b334801d

SHA1
bdfb289daff51890cc71697b6322aa4b35ec9169

SHA256
c9fd7be4579e4aa942e8c2b44ab10115fa6c2fe6afd0c584865413d9d53f3b2a

SHA512
2a635b815a5e117ea181ee79305ee1baf591459427acc5210d8c6c7e447be3513ead871c605eb3d32e4ab4111b2a335f26520d0ef8c1245a4af44e1faec44574

Download Submit
memory/1616-130-0x00000000007D0000-0x0000000000872000-memory.dmp

Filesize
648KB

Download
memory/1616-134-0x00000000052A0000-0x00000000052AA000-memory.dmp

Filesize
40KB

Download
memory/1616-133-0x0000000005380000-0x000000000541C000-memory.dmp

Filesize
624KB

Download
memory/1616-131-0x0000000005890000-0x0000000005E34000-memory.dmp

Filesize
5.6MB

Download
memory/1616-132-0x0000000005200000-0x0000000005292000-memory.dmp

Filesize
584KB

Download
memory/2368-151-0x0000000000000000-mapping.dmp

Download
memory/3168-150-0x0000000008130000-0x0000000008271000-memory.dmp

Filesize
1.3MB

Download
memory/3168-148-0x0000000008130000-0x0000000008271000-memory.dmp

Filesize
1.3MB

Download
memory/3168-141-0x0000000007EF0000-0x0000000008090000-memory.dmp

Filesize
1.6MB

Download
memory/3848-153-0x0000000000000000-mapping.dmp

Download
memory/4396-136-0x0000000000400000-0x000000000042B000-memory.dmp

Filesize
172KB

Download
memory/4396-140-0x0000000001530000-0x0000000001541000-memory.dmp

Filesize
68KB

Download
memory/4396-139-0x00000000019C0000-0x0000000001D0A000-memory.dmp

Filesize
3.3MB

Download
memory/4396-138-0x0000000000400000-0x000000000042B000-memory.dmp

Filesize
172KB

Download
memory/4396-135-0x0000000000000000-mapping.dmp

Download
memory/4672-145-0x0000000000000000-mapping.dmp

Download
memory/4732-144-0x0000000000910000-0x000000000093B000-memory.dmp

Filesize
172KB

Download
memory/4732-149-0x0000000000910000-0x000000000093B000-memory.dmp

Filesize
172KB

Download
memory/4732-147-0x00000000011C0000-0x0000000001250000-memory.dmp

Filesize
576KB

Download
memory/4732-146-0x0000000001360000-0x00000000016AA000-memory.dmp

Filesize
3.3MB

Download
memory/4732-143-0x0000000000C40000-0x0000000000C4A000-memory.dmp

Filesize
40KB

Download
memory/4732-142-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads