formbook | f8d6a16b03802e68ec4cef31e3007e6d58d8124f9e695fdd625b99cb2502939c

General

Target

vbc.exe
Size

2.8MB
MD5

980a1110e94708d0905a1d8acde8eb23
SHA1

cc9d0dfaaaf59f88efc40c10f35e002cdc9a0b50
SHA256

f8d6a16b03802e68ec4cef31e3007e6d58d8124f9e695fdd625b99cb2502939c
SHA512

f829ccf02b2948850d0c47218e901bc2ca2dc5c6d1c2075906cfcbd4ab472e1e638f93ee71eaa91e72a12fe7d55e99edfcdc7d22255e68df839c493c7153034a

Score

10^/10

formbook xloader zgtb loader persistence rat spyware stealer trojan

Malware Config

Extracted

Family

xloader

Version

2.6

Campaign

zgtb

Decoy

gabriellep.com

honghe4.xyz

anisaofrendas.com

happy-tile.com

thesulkies.com

international-ipo.com

tazeco.info

hhhzzz.xyz

vrmonster.xyz

theearthresidencia.com

sportape.xyz

elshadaibaterias.com

koredeiihibi.com

taxtaa.com

globalcityb.com

fxivcama.com

dagsmith.com

elmar-bhp.com

peakice.net

jhcdjewelry.com

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

Xloader payload 4 IoCs

rat

Processes:

resource	yara_rule
behavioral2/memory/1996-132-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral2/memory/1996-138-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral2/memory/4616-141-0x00000000002C0000-0x00000000002EB000-memory.dmp	xloader
behavioral2/memory/4616-145-0x00000000002C0000-0x00000000002EB000-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:

msdt.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	msdt.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\QJO06TIXPB = "C:\\Program Files (x86)\\D6lch4\\etsdbk4nh.exe"	msdt.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
Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

Suspicious use of SetThreadContext 3 IoCs

Processes:

vbc.exeshrpubw.exemsdt.exe

description	pid	process	target process
PID 2628 set thread context of 1996	2628	vbc.exe	shrpubw.exe
PID 1996 set thread context of 676	1996	shrpubw.exe	Explorer.EXE
PID 4616 set thread context of 676	4616	msdt.exe	Explorer.EXE

Drops file in Program Files directory 1 IoCs

Processes:

msdt.exe

description ioc process

File opened for modification C:\Program Files (x86)\D6lch4\etsdbk4nh.exe msdt.exe

description	ioc	process
File opened for modification	C:\Program Files (x86)\D6lch4\etsdbk4nh.exe	msdt.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

msdt.exe

description	ioc	process
Key created	\Registry\User\S-1-5-21-2372564722-193526734-2636556182-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	msdt.exe

Suspicious behavior: EnumeratesProcesses 62 IoCs

Processes:

vbc.exeshrpubw.exemsdt.exe

pid	process
2628	vbc.exe
2628	vbc.exe
2628	vbc.exe
2628	vbc.exe
2628	vbc.exe
2628	vbc.exe
2628	vbc.exe
2628	vbc.exe
1996	shrpubw.exe
1996	shrpubw.exe
1996	shrpubw.exe
1996	shrpubw.exe
2628	vbc.exe
2628	vbc.exe
4616	msdt.exe
4616	msdt.exe
4616	msdt.exe
4616	msdt.exe
4616	msdt.exe
4616	msdt.exe
4616	msdt.exe
4616	msdt.exe
4616	msdt.exe
4616	msdt.exe
4616	msdt.exe
4616	msdt.exe
4616	msdt.exe
4616	msdt.exe
4616	msdt.exe
4616	msdt.exe
4616	msdt.exe
4616	msdt.exe
4616	msdt.exe
4616	msdt.exe
4616	msdt.exe
4616	msdt.exe
4616	msdt.exe
4616	msdt.exe
4616	msdt.exe
4616	msdt.exe
4616	msdt.exe
4616	msdt.exe
4616	msdt.exe
4616	msdt.exe
4616	msdt.exe
4616	msdt.exe
4616	msdt.exe
4616	msdt.exe
4616	msdt.exe
4616	msdt.exe
4616	msdt.exe
4616	msdt.exe
4616	msdt.exe
4616	msdt.exe
4616	msdt.exe
4616	msdt.exe
4616	msdt.exe
4616	msdt.exe
4616	msdt.exe
4616	msdt.exe
4616	msdt.exe
4616	msdt.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

676 Explorer.EXE
Suspicious behavior: MapViewOfSection 7 IoCs

Processes:

shrpubw.exemsdt.exe

pid process

1996 shrpubw.exe
1996 shrpubw.exe
1996 shrpubw.exe
4616 msdt.exe
4616 msdt.exe
4616 msdt.exe
4616 msdt.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

vbc.exeshrpubw.exemsdt.exe

description pid process

Token: SeDebugPrivilege 2628 vbc.exe
Token: SeDebugPrivilege 1996 shrpubw.exe
Token: SeDebugPrivilege 4616 msdt.exe

pid	process
676	Explorer.EXE

pid	process
1996	shrpubw.exe
1996	shrpubw.exe
1996	shrpubw.exe
4616	msdt.exe
4616	msdt.exe
4616	msdt.exe
4616	msdt.exe

description	pid	process
Token: SeDebugPrivilege	2628	vbc.exe
Token: SeDebugPrivilege	1996	shrpubw.exe
Token: SeDebugPrivilege	4616	msdt.exe

Suspicious use of WriteProcessMemory 22 IoCs

Processes:

vbc.exeExplorer.EXEmsdt.exe

description	pid	process	target process
PID 2628 wrote to memory of 1996	2628	vbc.exe	shrpubw.exe
PID 2628 wrote to memory of 1996	2628	vbc.exe	shrpubw.exe
PID 2628 wrote to memory of 1996	2628	vbc.exe	shrpubw.exe
PID 2628 wrote to memory of 1996	2628	vbc.exe	shrpubw.exe
PID 2628 wrote to memory of 1996	2628	vbc.exe	shrpubw.exe
PID 2628 wrote to memory of 1996	2628	vbc.exe	shrpubw.exe
PID 2628 wrote to memory of 1996	2628	vbc.exe	shrpubw.exe
PID 676 wrote to memory of 4616	676	Explorer.EXE	msdt.exe
PID 676 wrote to memory of 4616	676	Explorer.EXE	msdt.exe
PID 676 wrote to memory of 4616	676	Explorer.EXE	msdt.exe
PID 4616 wrote to memory of 4780	4616	msdt.exe	cmd.exe
PID 4616 wrote to memory of 4780	4616	msdt.exe	cmd.exe
PID 4616 wrote to memory of 4780	4616	msdt.exe	cmd.exe
PID 4616 wrote to memory of 3856	4616	msdt.exe	cmd.exe
PID 4616 wrote to memory of 3856	4616	msdt.exe	cmd.exe
PID 4616 wrote to memory of 3856	4616	msdt.exe	cmd.exe
PID 4616 wrote to memory of 5040	4616	msdt.exe	cmd.exe
PID 4616 wrote to memory of 5040	4616	msdt.exe	cmd.exe
PID 4616 wrote to memory of 5040	4616	msdt.exe	cmd.exe
PID 4616 wrote to memory of 2884	4616	msdt.exe	Firefox.exe
PID 4616 wrote to memory of 2884	4616	msdt.exe	Firefox.exe
PID 4616 wrote to memory of 2884	4616	msdt.exe	Firefox.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:676

C:\Users\Admin\AppData\Local\Temp\vbc.exe
"C:\Users\Admin\AppData\Local\Temp\vbc.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2628

C:\Windows\SysWOW64\shrpubw.exe
"C:\Windows\SysWOW64\shrpubw.exe"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:1996

C:\Windows\SysWOW64\msdt.exe
"C:\Windows\SysWOW64\msdt.exe"
2⤵
- Adds policy 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:4616

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Windows\SysWOW64\shrpubw.exe"
3⤵
PID:4780

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:3856

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:5040

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:2884

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scripting

1

T1064

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

2

T1112

Scripting

1

T1064

Credential Access

Credentials in Files

1

T1081

Discovery

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

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

MD5
349e6eb110e34a08924d92f6b334801d

SHA1
bdfb289daff51890cc71697b6322aa4b35ec9169

SHA256
c9fd7be4579e4aa942e8c2b44ab10115fa6c2fe6afd0c584865413d9d53f3b2a

SHA512
2a635b815a5e117ea181ee79305ee1baf591459427acc5210d8c6c7e447be3513ead871c605eb3d32e4ab4111b2a335f26520d0ef8c1245a4af44e1faec44574

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memory/676-146-0x0000000002900000-0x0000000002A08000-memory.dmp

Filesize
1.0MB

Download
memory/676-144-0x0000000002900000-0x0000000002A08000-memory.dmp

Filesize
1.0MB

Download
memory/676-136-0x0000000002570000-0x0000000002633000-memory.dmp

Filesize
780KB

Download
memory/1996-135-0x0000000000DD0000-0x0000000000DE1000-memory.dmp

Filesize
68KB

Download
memory/1996-131-0x0000000000000000-mapping.dmp

Download
memory/1996-138-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1996-132-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1996-133-0x0000000000F10000-0x000000000125A000-memory.dmp

Filesize
3.3MB

Download
memory/2628-130-0x0000000000850000-0x0000000000B30000-memory.dmp

Filesize
2.9MB

Download
memory/3856-147-0x0000000000000000-mapping.dmp

Download
memory/4616-142-0x00000000025C0000-0x000000000290A000-memory.dmp

Filesize
3.3MB

Download
memory/4616-143-0x0000000002350000-0x00000000023E0000-memory.dmp

Filesize
576KB

Download
memory/4616-141-0x00000000002C0000-0x00000000002EB000-memory.dmp

Filesize
172KB

Download
memory/4616-145-0x00000000002C0000-0x00000000002EB000-memory.dmp

Filesize
172KB

Download
memory/4616-140-0x00000000003A0000-0x00000000003F7000-memory.dmp

Filesize
348KB

Download
memory/4616-137-0x0000000000000000-mapping.dmp

Download
memory/4780-139-0x0000000000000000-mapping.dmp

Download
memory/5040-149-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads