formbook | 13a743db77a54ff14ced8a949be8a503f65962cd7217155fd662481733c0316e

Analysis

max time kernel
300s
max time network
301s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
10-01-2023 13:45

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

Invoice NO 22073895.exe
Size

486KB
MD5

85cd688a9fee95b88b94b6879039201f
SHA1

0843488b993fd26651cff415ac5a43c593defa25
SHA256

4d3261b30e45d9577916b421a9b829836e955a9be539866aa29d21aad01283c1
SHA512

9ed65a00f4e6c276b18778feac6140759ebbc159d15c4c20280ff13b1887c73ec4fc88a38abe0f8e0d75ec0e5a5acf82478472b761247bee1357d130bf80ab45
SSDEEP

12288:AYn68Ex+E5Z8kJqeKPMwwOfGo5KNfhtDuCytMi4zaaKL:AYn6DAEgIqecuo5KbsCy6igbG

Score

10^/10

formbook xloader poub loader persistence rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Campaign

poub

Decoy

WY0eksfISzRg4O6c+opnGL6gaw==

moRjn9ExtYi8UmUo+Tya

2vME+GedoxzFnuLXesUoVj4=

EvW4JWJ1NQ8nN3tA3SM=

2mK9efMZMgN1VOs=

8d0jua5b0J6AQEW7

/2cyThOd37DSTYMASDye4Q0t/Vs=

ral+tbIh2KKAQEW7

YLY9jsPtYB/FRmMo+Tya

R1WcElWAMtFxFrVqtZT2ZpIS9xRZNho=

KFXGg/T1pCC9GjrxUPTcjw==

8mMlK5nDwjjPFTP5jMtAtQ0t/Vs=

c7am8nhhlCo=

UW91trZj6dENxuRdpxOvW1Cf

sjOMUcvq6lYJCZEfV4euFzY=

62nBgPjdmWQkmWElww==

64E8JqA1aruSUvw=

NqI1reXpcR+REye0

8+y1oOsbjgSyEhjXUPTcjw==

Rx9by8gNBwN1VOs=

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/2616-139-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral2/memory/2616-146-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral2/memory/3052-149-0x0000000000E80000-0x0000000000EAC000-memory.dmp	xloader
behavioral2/memory/3052-152-0x0000000000E80000-0x0000000000EAC000-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:

WWAHost.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	WWAHost.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\BXETQ6HHB46 = "C:\\Program Files (x86)\\Ltlmx\\gpnplvxxfnb.exe"	WWAHost.exe

Executes dropped EXE 3 IoCs

Processes:

pvwuec.exepvwuec.exegpnplvxxfnb.exe

pid process

4844 pvwuec.exe
2616 pvwuec.exe
1372 gpnplvxxfnb.exe
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.

Query Registry
T1012

System Information Discovery
T1082

Processes:

pvwuec.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\Control Panel\International\Geo\Nation pvwuec.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

pid	process
4844	pvwuec.exe
2616	pvwuec.exe
1372	gpnplvxxfnb.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\Control Panel\International\Geo\Nation	pvwuec.exe

Suspicious use of SetThreadContext 4 IoCs

Processes:

pvwuec.exepvwuec.exeWWAHost.exe

description	pid	process	target process
PID 4844 set thread context of 2616	4844	pvwuec.exe	pvwuec.exe
PID 2616 set thread context of 1108	2616	pvwuec.exe	Explorer.EXE
PID 2616 set thread context of 1108	2616	pvwuec.exe	Explorer.EXE
PID 3052 set thread context of 1108	3052	WWAHost.exe	Explorer.EXE

Drops file in Program Files directory 4 IoCs

Processes:

Explorer.EXEWWAHost.exe

description	ioc	process
File opened for modification	C:\Program Files (x86)\Ltlmx\gpnplvxxfnb.exe	Explorer.EXE
File opened for modification	C:\Program Files (x86)\Ltlmx\gpnplvxxfnb.exe	WWAHost.exe
File opened for modification	C:\Program Files (x86)\Ltlmx	Explorer.EXE
File created	C:\Program Files (x86)\Ltlmx\gpnplvxxfnb.exe	Explorer.EXE

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

1652 1372 WerFault.exe gpnplvxxfnb.exe

pid	pid_target	process	target process
1652	1372	WerFault.exe	gpnplvxxfnb.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

WWAHost.exe

description	ioc	process
Key created	\Registry\User\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	WWAHost.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

pvwuec.exeWWAHost.exe

pid	process
2616	pvwuec.exe
2616	pvwuec.exe
2616	pvwuec.exe
2616	pvwuec.exe
2616	pvwuec.exe
2616	pvwuec.exe
3052	WWAHost.exe
3052	WWAHost.exe
3052	WWAHost.exe
3052	WWAHost.exe
3052	WWAHost.exe
3052	WWAHost.exe
3052	WWAHost.exe
3052	WWAHost.exe
3052	WWAHost.exe
3052	WWAHost.exe
3052	WWAHost.exe
3052	WWAHost.exe
3052	WWAHost.exe
3052	WWAHost.exe
3052	WWAHost.exe
3052	WWAHost.exe
3052	WWAHost.exe
3052	WWAHost.exe
3052	WWAHost.exe
3052	WWAHost.exe
3052	WWAHost.exe
3052	WWAHost.exe
3052	WWAHost.exe
3052	WWAHost.exe
3052	WWAHost.exe
3052	WWAHost.exe
3052	WWAHost.exe
3052	WWAHost.exe
3052	WWAHost.exe
3052	WWAHost.exe
3052	WWAHost.exe
3052	WWAHost.exe
3052	WWAHost.exe
3052	WWAHost.exe
3052	WWAHost.exe
3052	WWAHost.exe
3052	WWAHost.exe
3052	WWAHost.exe
3052	WWAHost.exe
3052	WWAHost.exe
3052	WWAHost.exe
3052	WWAHost.exe
3052	WWAHost.exe
3052	WWAHost.exe
3052	WWAHost.exe
3052	WWAHost.exe
3052	WWAHost.exe
3052	WWAHost.exe
3052	WWAHost.exe
3052	WWAHost.exe
3052	WWAHost.exe
3052	WWAHost.exe
3052	WWAHost.exe
3052	WWAHost.exe
3052	WWAHost.exe
3052	WWAHost.exe
3052	WWAHost.exe
3052	WWAHost.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

1108 Explorer.EXE
Suspicious behavior: MapViewOfSection 9 IoCs

Processes:

pvwuec.exepvwuec.exeWWAHost.exe

pid process

4844 pvwuec.exe
2616 pvwuec.exe
2616 pvwuec.exe
2616 pvwuec.exe
2616 pvwuec.exe
3052 WWAHost.exe
3052 WWAHost.exe
3052 WWAHost.exe
3052 WWAHost.exe

pid	process
1108	Explorer.EXE

pid	process
4844	pvwuec.exe
2616	pvwuec.exe
2616	pvwuec.exe
2616	pvwuec.exe
2616	pvwuec.exe
3052	WWAHost.exe
3052	WWAHost.exe
3052	WWAHost.exe
3052	WWAHost.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

Processes:

pvwuec.exeWWAHost.exeExplorer.EXE

description	pid	process
Token: SeDebugPrivilege	2616	pvwuec.exe
Token: SeDebugPrivilege	3052	WWAHost.exe
Token: SeShutdownPrivilege	1108	Explorer.EXE
Token: SeCreatePagefilePrivilege	1108	Explorer.EXE
Token: SeShutdownPrivilege	1108	Explorer.EXE
Token: SeCreatePagefilePrivilege	1108	Explorer.EXE

Suspicious use of WriteProcessMemory 25 IoCs

Processes:

Invoice NO 22073895.exepvwuec.exeExplorer.EXEWWAHost.exe

description	pid	process	target process
PID 4872 wrote to memory of 4844	4872	Invoice NO 22073895.exe	pvwuec.exe
PID 4872 wrote to memory of 4844	4872	Invoice NO 22073895.exe	pvwuec.exe
PID 4872 wrote to memory of 4844	4872	Invoice NO 22073895.exe	pvwuec.exe
PID 4844 wrote to memory of 2616	4844	pvwuec.exe	pvwuec.exe
PID 4844 wrote to memory of 2616	4844	pvwuec.exe	pvwuec.exe
PID 4844 wrote to memory of 2616	4844	pvwuec.exe	pvwuec.exe
PID 4844 wrote to memory of 2616	4844	pvwuec.exe	pvwuec.exe
PID 1108 wrote to memory of 3052	1108	Explorer.EXE	WWAHost.exe
PID 1108 wrote to memory of 3052	1108	Explorer.EXE	WWAHost.exe
PID 1108 wrote to memory of 3052	1108	Explorer.EXE	WWAHost.exe
PID 3052 wrote to memory of 424	3052	WWAHost.exe	cmd.exe
PID 3052 wrote to memory of 424	3052	WWAHost.exe	cmd.exe
PID 3052 wrote to memory of 424	3052	WWAHost.exe	cmd.exe
PID 3052 wrote to memory of 1936	3052	WWAHost.exe	cmd.exe
PID 3052 wrote to memory of 1936	3052	WWAHost.exe	cmd.exe
PID 3052 wrote to memory of 1936	3052	WWAHost.exe	cmd.exe
PID 3052 wrote to memory of 1244	3052	WWAHost.exe	cmd.exe
PID 3052 wrote to memory of 1244	3052	WWAHost.exe	cmd.exe
PID 3052 wrote to memory of 1244	3052	WWAHost.exe	cmd.exe
PID 3052 wrote to memory of 3932	3052	WWAHost.exe	Firefox.exe
PID 3052 wrote to memory of 3932	3052	WWAHost.exe	Firefox.exe
PID 3052 wrote to memory of 3932	3052	WWAHost.exe	Firefox.exe
PID 1108 wrote to memory of 1372	1108	Explorer.EXE	gpnplvxxfnb.exe
PID 1108 wrote to memory of 1372	1108	Explorer.EXE	gpnplvxxfnb.exe
PID 1108 wrote to memory of 1372	1108	Explorer.EXE	gpnplvxxfnb.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:1108

C:\Users\Admin\AppData\Local\Temp\Invoice NO 22073895.exe
"C:\Users\Admin\AppData\Local\Temp\Invoice NO 22073895.exe"
2⤵
- Suspicious use of WriteProcessMemory
PID:4872

C:\Users\Admin\AppData\Local\Temp\pvwuec.exe
"C:\Users\Admin\AppData\Local\Temp\pvwuec.exe" C:\Users\Admin\AppData\Local\Temp\eeelcb.fn
3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:4844

C:\Users\Admin\AppData\Local\Temp\pvwuec.exe
"C:\Users\Admin\AppData\Local\Temp\pvwuec.exe"
4⤵
- Executes dropped EXE
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:2616

C:\Windows\SysWOW64\WWAHost.exe
"C:\Windows\SysWOW64\WWAHost.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:3052

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\pvwuec.exe"
3⤵
PID:424

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:1936

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:1244

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:3932

C:\Program Files (x86)\Ltlmx\gpnplvxxfnb.exe
"C:\Program Files (x86)\Ltlmx\gpnplvxxfnb.exe"
2⤵
- Executes dropped EXE
PID:1372

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1372 -s 504
3⤵
- Program crash
PID:1652

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 1372 -ip 1372
1⤵
PID:4320

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Credentials in Files

T1081

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Exfiltration

Command and Control

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Program Files (x86)\Ltlmx\gpnplvxxfnb.exe
Filesize
84KB

MD5
e87c6c672ec024582ffb00811abf747e

SHA1
05921c941ed33b6e0e4cd35c20a452d0659d04dd

SHA256
17a23dd9b5a1b36f5db90ea4e102a03a8dd14557b60f4c19c17e62e53ac19f86

SHA512
5d09656b375b7cb2a3e3062e4a4af3c77663cc454e79a7be59f2996b4db54e8609f6de7b0ad27432e42b45f2e544a22ba43096b61be6d06d36ff1b20b1e49cb5

Download Submit
C:\Program Files (x86)\Ltlmx\gpnplvxxfnb.exe
Filesize
84KB

MD5
e87c6c672ec024582ffb00811abf747e

SHA1
05921c941ed33b6e0e4cd35c20a452d0659d04dd

SHA256
17a23dd9b5a1b36f5db90ea4e102a03a8dd14557b60f4c19c17e62e53ac19f86

SHA512
5d09656b375b7cb2a3e3062e4a4af3c77663cc454e79a7be59f2996b4db54e8609f6de7b0ad27432e42b45f2e544a22ba43096b61be6d06d36ff1b20b1e49cb5

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
C:\Users\Admin\AppData\Local\Temp\eeelcb.fn
Filesize
5KB

MD5
c4ee853696ad5db212cd6ae2bb8a0fe1

SHA1
840ccd25c091a082be426b35386ce7ab8f5d0631

SHA256
6c92c5b0c148c513174215823f3ba3f7f53adbaae077553219826b35553edba1

SHA512
7527d4792d58829f38ed4509a37cc248a02aaeeddf747d3afe3c3f380f8fdad0ebe39e9c989bf1d224f54fab0d187379a93eb9a61800fd7d1f52eb4e6ec9e8c3

Download Submit
C:\Users\Admin\AppData\Local\Temp\pvwuec.exe
Filesize
84KB

MD5
e87c6c672ec024582ffb00811abf747e

SHA1
05921c941ed33b6e0e4cd35c20a452d0659d04dd

SHA256
17a23dd9b5a1b36f5db90ea4e102a03a8dd14557b60f4c19c17e62e53ac19f86

SHA512
5d09656b375b7cb2a3e3062e4a4af3c77663cc454e79a7be59f2996b4db54e8609f6de7b0ad27432e42b45f2e544a22ba43096b61be6d06d36ff1b20b1e49cb5

Download Submit
C:\Users\Admin\AppData\Local\Temp\pvwuec.exe
Filesize
84KB

MD5
e87c6c672ec024582ffb00811abf747e

SHA1
05921c941ed33b6e0e4cd35c20a452d0659d04dd

SHA256
17a23dd9b5a1b36f5db90ea4e102a03a8dd14557b60f4c19c17e62e53ac19f86

SHA512
5d09656b375b7cb2a3e3062e4a4af3c77663cc454e79a7be59f2996b4db54e8609f6de7b0ad27432e42b45f2e544a22ba43096b61be6d06d36ff1b20b1e49cb5

Download Submit
C:\Users\Admin\AppData\Local\Temp\pvwuec.exe
Filesize
84KB

MD5
e87c6c672ec024582ffb00811abf747e

SHA1
05921c941ed33b6e0e4cd35c20a452d0659d04dd

SHA256
17a23dd9b5a1b36f5db90ea4e102a03a8dd14557b60f4c19c17e62e53ac19f86

SHA512
5d09656b375b7cb2a3e3062e4a4af3c77663cc454e79a7be59f2996b4db54e8609f6de7b0ad27432e42b45f2e544a22ba43096b61be6d06d36ff1b20b1e49cb5

Download Submit
C:\Users\Admin\AppData\Local\Temp\serrf.p
Filesize
196KB

MD5
f33a9bba9a07130a2662f4f14e696e7c

SHA1
6fd979cbec5aaa33f8276ca0825a8c0e71768499

SHA256
ea5fe369ca49d659b7cf129def53fd7a1589c9ccdf16a7270354897e885d730c

SHA512
8df1c084b2dcf922faa9ae404642ab9e417b50bdafbf88ce14f1df1d3c3894d7e2f23e5e83ac4362edec3aa0d5a898af9087dac3680731a8dc8960a43b33cdfb

Download Submit
memory/424-147-0x0000000000000000-mapping.dmp

Download
memory/1108-142-0x0000000002A70000-0x0000000002B63000-memory.dmp

Filesize
972KB

Download
memory/1108-144-0x00000000081D0000-0x000000000833B000-memory.dmp

Filesize
1.4MB

Download
memory/1108-153-0x0000000007030000-0x0000000007122000-memory.dmp

Filesize
968KB

Download
memory/1108-154-0x0000000007030000-0x0000000007122000-memory.dmp

Filesize
968KB

Download
memory/1244-157-0x0000000000000000-mapping.dmp

Download
memory/1372-159-0x0000000000000000-mapping.dmp

Download
memory/1936-155-0x0000000000000000-mapping.dmp

Download
memory/2616-139-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/2616-146-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/2616-143-0x0000000000E90000-0x0000000000EA1000-memory.dmp

Filesize
68KB

Download
memory/2616-141-0x00000000005E0000-0x00000000005F1000-memory.dmp

Filesize
68KB

Download
memory/2616-140-0x0000000000A40000-0x0000000000D8A000-memory.dmp

Filesize
3.3MB

Download
memory/2616-137-0x0000000000000000-mapping.dmp

Download
memory/3052-150-0x00000000019C0000-0x0000000001D0A000-memory.dmp

Filesize
3.3MB

Download
memory/3052-151-0x0000000001760000-0x00000000017F0000-memory.dmp

Filesize
576KB

Download
memory/3052-152-0x0000000000E80000-0x0000000000EAC000-memory.dmp

Filesize
176KB

Download
memory/3052-149-0x0000000000E80000-0x0000000000EAC000-memory.dmp

Filesize
176KB

Download
memory/3052-148-0x00000000006A0000-0x000000000077C000-memory.dmp

Filesize
880KB

Download
memory/3052-145-0x0000000000000000-mapping.dmp

Download
memory/4844-132-0x0000000000000000-mapping.dmp

Download