formbook | 4fe26ebfc5412205231040de3bf8f865da141f2c9c5c2c809e4bf6ceced43e55

General

Target

triage_dropped_file.exe
Size

798KB
MD5

fa6cb9677ff2254615166747668a72ed
SHA1

e784bfd8f5f4514569205bb535ed8bc36ab47f28
SHA256

4fe26ebfc5412205231040de3bf8f865da141f2c9c5c2c809e4bf6ceced43e55
SHA512

e6e05225ecbf3e0157bc5b55980c17a7e9f61d36aadb172ae753b140c69b10f3e58d3a020e4225a25596b7aae586409e7c59e4ab2046e134ce5ccfc281484617

Score

10^/10

formbook xloader be4o loader persistence rat spyware stealer suricata trojan

Malware Config

Extracted

Family

xloader

Version

2.6

Campaign

be4o

Decoy

laboratoriobioixcha.com

tictocperushop.online

wild-oceans.com

belaruscountry.com

kicktmall.com

fitcoinweb.tech

mores.one

gogear.one

gxrcksy.com

samrcq.com

impossible-icecream.com

bravesxx.com

bookchainart.com

sleepsolutionsofmboro.com

ocbrazilbusinessclub.com

advisor76.xyz

xitaotech.com

mgsdtytifgf3414.xyz

johnson-brown.net

cr3drt.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
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 5 IoCs

rat

Processes:

resource	yara_rule
behavioral2/memory/4256-133-0x0000000000400000-0x000000000042B000-memory.dmp	xloader
behavioral2/memory/4256-134-0x000000000041F270-mapping.dmp	xloader
behavioral2/memory/4256-141-0x0000000000400000-0x000000000042B000-memory.dmp	xloader
behavioral2/memory/1240-143-0x00000000006A0000-0x00000000006CB000-memory.dmp	xloader
behavioral2/memory/1240-149-0x00000000006A0000-0x00000000006CB000-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:

wlanext.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	wlanext.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\ARZLCBMXCNY0 = "C:\\Program Files (x86)\\H9rqplnz\\jpxhblhhd.exe"	wlanext.exe

Executes dropped EXE 1 IoCs

Processes:

jpxhblhhd.exe

pid process

3512 jpxhblhhd.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

pid	process
3512	jpxhblhhd.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

triage_dropped_file.exevbc.exewlanext.exe

description	pid	process	target process
PID 4860 set thread context of 4256	4860	triage_dropped_file.exe	vbc.exe
PID 4256 set thread context of 2084	4256	vbc.exe	Explorer.EXE
PID 1240 set thread context of 2084	1240	wlanext.exe	Explorer.EXE

Drops file in Program Files directory 4 IoCs

Processes:

wlanext.exeExplorer.EXE

description	ioc	process
File opened for modification	C:\Program Files (x86)\H9rqplnz\jpxhblhhd.exe	wlanext.exe
File opened for modification	C:\Program Files (x86)\H9rqplnz	Explorer.EXE
File created	C:\Program Files (x86)\H9rqplnz\jpxhblhhd.exe	Explorer.EXE
File opened for modification	C:\Program Files (x86)\H9rqplnz\jpxhblhhd.exe	Explorer.EXE

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

wlanext.exe

description	ioc	process
Key created	\Registry\User\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	wlanext.exe

Suspicious behavior: EnumeratesProcesses 56 IoCs

Processes:

vbc.exewlanext.exe

pid	process
4256	vbc.exe
4256	vbc.exe
4256	vbc.exe
4256	vbc.exe
1240	wlanext.exe
1240	wlanext.exe
1240	wlanext.exe
1240	wlanext.exe
1240	wlanext.exe
1240	wlanext.exe
1240	wlanext.exe
1240	wlanext.exe
1240	wlanext.exe
1240	wlanext.exe
1240	wlanext.exe
1240	wlanext.exe
1240	wlanext.exe
1240	wlanext.exe
1240	wlanext.exe
1240	wlanext.exe
1240	wlanext.exe
1240	wlanext.exe
1240	wlanext.exe
1240	wlanext.exe
1240	wlanext.exe
1240	wlanext.exe
1240	wlanext.exe
1240	wlanext.exe
1240	wlanext.exe
1240	wlanext.exe
1240	wlanext.exe
1240	wlanext.exe
1240	wlanext.exe
1240	wlanext.exe
1240	wlanext.exe
1240	wlanext.exe
1240	wlanext.exe
1240	wlanext.exe
1240	wlanext.exe
1240	wlanext.exe
1240	wlanext.exe
1240	wlanext.exe
1240	wlanext.exe
1240	wlanext.exe
1240	wlanext.exe
1240	wlanext.exe
1240	wlanext.exe
1240	wlanext.exe
1240	wlanext.exe
1240	wlanext.exe
1240	wlanext.exe
1240	wlanext.exe
1240	wlanext.exe
1240	wlanext.exe
1240	wlanext.exe
1240	wlanext.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

2084 Explorer.EXE
Suspicious behavior: MapViewOfSection 7 IoCs

Processes:

vbc.exewlanext.exe

pid process

4256 vbc.exe
4256 vbc.exe
4256 vbc.exe
1240 wlanext.exe
1240 wlanext.exe
1240 wlanext.exe
1240 wlanext.exe

pid	process
2084	Explorer.EXE

Suspicious use of AdjustPrivilegeToken 10 IoCs

Processes:

vbc.exewlanext.exeExplorer.EXE

description	pid	process
Token: SeDebugPrivilege	4256	vbc.exe
Token: SeDebugPrivilege	1240	wlanext.exe
Token: SeShutdownPrivilege	2084	Explorer.EXE
Token: SeCreatePagefilePrivilege	2084	Explorer.EXE
Token: SeShutdownPrivilege	2084	Explorer.EXE
Token: SeCreatePagefilePrivilege	2084	Explorer.EXE
Token: SeShutdownPrivilege	2084	Explorer.EXE
Token: SeCreatePagefilePrivilege	2084	Explorer.EXE
Token: SeShutdownPrivilege	2084	Explorer.EXE
Token: SeCreatePagefilePrivilege	2084	Explorer.EXE

Suspicious use of WriteProcessMemory 24 IoCs

Processes:

triage_dropped_file.exeExplorer.EXEwlanext.exe

description	pid	process	target process
PID 4860 wrote to memory of 4256	4860	triage_dropped_file.exe	vbc.exe
PID 4860 wrote to memory of 4256	4860	triage_dropped_file.exe	vbc.exe
PID 4860 wrote to memory of 4256	4860	triage_dropped_file.exe	vbc.exe
PID 4860 wrote to memory of 4256	4860	triage_dropped_file.exe	vbc.exe
PID 4860 wrote to memory of 4256	4860	triage_dropped_file.exe	vbc.exe
PID 4860 wrote to memory of 4256	4860	triage_dropped_file.exe	vbc.exe
PID 2084 wrote to memory of 1240	2084	Explorer.EXE	wlanext.exe
PID 2084 wrote to memory of 1240	2084	Explorer.EXE	wlanext.exe
PID 2084 wrote to memory of 1240	2084	Explorer.EXE	wlanext.exe
PID 1240 wrote to memory of 3364	1240	wlanext.exe	cmd.exe
PID 1240 wrote to memory of 3364	1240	wlanext.exe	cmd.exe
PID 1240 wrote to memory of 3364	1240	wlanext.exe	cmd.exe
PID 1240 wrote to memory of 4664	1240	wlanext.exe	cmd.exe
PID 1240 wrote to memory of 4664	1240	wlanext.exe	cmd.exe
PID 1240 wrote to memory of 4664	1240	wlanext.exe	cmd.exe
PID 1240 wrote to memory of 3964	1240	wlanext.exe	cmd.exe
PID 1240 wrote to memory of 3964	1240	wlanext.exe	cmd.exe
PID 1240 wrote to memory of 3964	1240	wlanext.exe	cmd.exe
PID 1240 wrote to memory of 4300	1240	wlanext.exe	Firefox.exe
PID 1240 wrote to memory of 4300	1240	wlanext.exe	Firefox.exe
PID 1240 wrote to memory of 4300	1240	wlanext.exe	Firefox.exe
PID 2084 wrote to memory of 3512	2084	Explorer.EXE	jpxhblhhd.exe
PID 2084 wrote to memory of 3512	2084	Explorer.EXE	jpxhblhhd.exe
PID 2084 wrote to memory of 3512	2084	Explorer.EXE	jpxhblhhd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Drops file in Program Files directory
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2084

C:\Users\Admin\AppData\Local\Temp\triage_dropped_file.exe
"C:\Users\Admin\AppData\Local\Temp\triage_dropped_file.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4860

C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:4256

C:\Windows\SysWOW64\autochk.exe
"C:\Windows\SysWOW64\autochk.exe"
2⤵
PID:4740

C:\Windows\SysWOW64\wlanext.exe
"C:\Windows\SysWOW64\wlanext.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:1240

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
3⤵
PID:3364

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:4664

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:3964

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:4300

C:\Program Files (x86)\H9rqplnz\jpxhblhhd.exe
"C:\Program Files (x86)\H9rqplnz\jpxhblhhd.exe"
2⤵
- Executes dropped EXE
PID:3512

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:\Program Files (x86)\H9rqplnz\jpxhblhhd.exe
Filesize
2.5MB

MD5
6f0b7e9ec96f2f44a4bc82d4422d8833

SHA1
3e19a1f3c9e90896e6255fa0a073d2782784b6a4

SHA256
8f0ab6b9a3be147fa077aaac8abdb6b5f89ef7e1c81cbfbdfb58a1e2d6421871

SHA512
b84760594d17faf72aeef18ff49f648f62c372ba61243fe92c082b3776dadcaed80a23af9c91669a47ce3a6b223d10ef444b58e5a08d512ce3b1c18c45a3fa92

Download Submit
C:\Program Files (x86)\H9rqplnz\jpxhblhhd.exe
Filesize
2.5MB

MD5
6f0b7e9ec96f2f44a4bc82d4422d8833

SHA1
3e19a1f3c9e90896e6255fa0a073d2782784b6a4

SHA256
8f0ab6b9a3be147fa077aaac8abdb6b5f89ef7e1c81cbfbdfb58a1e2d6421871

SHA512
b84760594d17faf72aeef18ff49f648f62c372ba61243fe92c082b3776dadcaed80a23af9c91669a47ce3a6b223d10ef444b58e5a08d512ce3b1c18c45a3fa92

Download Submit
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/1240-149-0x00000000006A0000-0x00000000006CB000-memory.dmp

Filesize
172KB

Download
memory/1240-140-0x0000000000000000-mapping.dmp

Download
memory/1240-142-0x0000000000B70000-0x0000000000B87000-memory.dmp

Filesize
92KB

Download
memory/1240-143-0x00000000006A0000-0x00000000006CB000-memory.dmp

Filesize
172KB

Download
memory/1240-147-0x0000000001250000-0x00000000012E0000-memory.dmp

Filesize
576KB

Download
memory/1240-145-0x0000000000F00000-0x000000000124A000-memory.dmp

Filesize
3.3MB

Download
memory/2084-150-0x0000000008780000-0x0000000008905000-memory.dmp

Filesize
1.5MB

Download
memory/2084-146-0x0000000008570000-0x0000000008689000-memory.dmp

Filesize
1.1MB

Download
memory/2084-139-0x0000000008570000-0x0000000008689000-memory.dmp

Filesize
1.1MB

Download
memory/2084-148-0x0000000008780000-0x0000000008905000-memory.dmp

Filesize
1.5MB

Download
memory/3364-144-0x0000000000000000-mapping.dmp

Download
memory/3512-155-0x0000000000000000-mapping.dmp

Download
memory/3964-153-0x0000000000000000-mapping.dmp

Download
memory/4256-141-0x0000000000400000-0x000000000042B000-memory.dmp

Filesize
172KB

Download
memory/4256-138-0x0000000001750000-0x0000000001761000-memory.dmp

Filesize
68KB

Download
memory/4256-137-0x0000000001850000-0x0000000001B9A000-memory.dmp

Filesize
3.3MB

Download
memory/4256-134-0x000000000041F270-mapping.dmp

Download
memory/4256-133-0x0000000000400000-0x000000000042B000-memory.dmp

Filesize
172KB

Download
memory/4664-151-0x0000000000000000-mapping.dmp

Download
memory/4860-131-0x0000000000B50000-0x0000000000C1C000-memory.dmp

Filesize
816KB

Download
memory/4860-135-0x00007FF8657A0000-0x00007FF866261000-memory.dmp

Filesize
10.8MB

Download
memory/4860-132-0x00007FF8657A0000-0x00007FF866261000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads