formbook | 3580ae39b6b33aa67838c5c1ca91b6aebf91e470360fb13072497e85df748871

Analysis

max time kernel
150s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20220901-en
resource tags

arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
submitted
01-12-2022 07:56

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General

Target

3580ae39b6b33aa67838c5c1ca91b6aebf91e470360fb13072497e85df748871.js
Size

341KB
MD5

59b4d0fb62bea58db86b5f9b82382f21
SHA1

57bae158e509b8e23c3347efeaf00553920b8bf6
SHA256

3580ae39b6b33aa67838c5c1ca91b6aebf91e470360fb13072497e85df748871
SHA512

d09975b8ecf9de689bf7e9cebfa9430940b6f465e00a15b4baeb839c598c61cac380263db96f027ef4328b705a773c3a4543961ba1806cc31c86a2fd82f29e6e
SSDEEP

6144:D9w3fOYrR6SInG2u3Wp4cwRDyTlMiAaJ/jpPiWUiSFtroVSSM1tZQfm:YWaR6SInGj3WN6DyhMiASjpPhSFtroVI

Score

10^/10

formbook vjw0rm a24e rat spyware stealer trojan worm

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

a24e

Decoy

flormarine.co.uk

theglazingsquad.uk

konarkpharma.com

maxpropertyfinanceuk.co.uk

jackson-ifc.com

yvonneazevedoimoveis.net

baystella.com

arexbaba.online

trihgd.xyz

filth520571.com

cikpkg.cfd

jakesupport.com

8863365.com

duniaslot777.online

lop3a.com

berkut-clan.ru

lernnavigator.com

elenaisaprincess.co.uk

daimadaquan.xyz

mychirocart.net

Signatures

Formbook
Formbook is a data stealing malware which is capable of stealing data.
trojan spyware stealer formbook
Vjw0rm
Vjw0rm is a remote access trojan written in JavaScript.
trojan worm vjw0rm

Formbook payload 4 IoCs

rat

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\BIG BRO.exe	formbook
C:\Users\Admin\AppData\Local\Temp\BIG BRO.exe	formbook
behavioral2/memory/2400-142-0x00000000004F0000-0x000000000051F000-memory.dmp	formbook
behavioral2/memory/2400-147-0x00000000004F0000-0x000000000051F000-memory.dmp	formbook

Blocklisted process makes network request 6 IoCs

Processes:

wscript.exe

flow pid process

7 4768 wscript.exe
37 4768 wscript.exe
48 4768 wscript.exe
53 4768 wscript.exe
55 4768 wscript.exe
60 4768 wscript.exe
Executes dropped EXE 1 IoCs

Processes:

BIG BRO.exe

pid process

1516 BIG BRO.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:

wscript.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation wscript.exe

flow	pid	process
7	4768	wscript.exe
37	4768	wscript.exe
48	4768	wscript.exe
53	4768	wscript.exe
55	4768	wscript.exe
60	4768	wscript.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation	wscript.exe

Drops startup file 2 IoCs

Processes:

wscript.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\SfehVeXIsQ.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\SfehVeXIsQ.js	wscript.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

BIG BRO.exemsiexec.exe

description	pid	process	target process
PID 1516 set thread context of 2756	1516	BIG BRO.exe	Explorer.EXE
PID 2400 set thread context of 2756	2400	msiexec.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

Suspicious behavior: EnumeratesProcesses 60 IoCs

Processes:

BIG BRO.exemsiexec.exe

pid	process
1516	BIG BRO.exe
1516	BIG BRO.exe
1516	BIG BRO.exe
1516	BIG BRO.exe
2400	msiexec.exe
2400	msiexec.exe
2400	msiexec.exe
2400	msiexec.exe
2400	msiexec.exe
2400	msiexec.exe
2400	msiexec.exe
2400	msiexec.exe
2400	msiexec.exe
2400	msiexec.exe
2400	msiexec.exe
2400	msiexec.exe
2400	msiexec.exe
2400	msiexec.exe
2400	msiexec.exe
2400	msiexec.exe
2400	msiexec.exe
2400	msiexec.exe
2400	msiexec.exe
2400	msiexec.exe
2400	msiexec.exe
2400	msiexec.exe
2400	msiexec.exe
2400	msiexec.exe
2400	msiexec.exe
2400	msiexec.exe
2400	msiexec.exe
2400	msiexec.exe
2400	msiexec.exe
2400	msiexec.exe
2400	msiexec.exe
2400	msiexec.exe
2400	msiexec.exe
2400	msiexec.exe
2400	msiexec.exe
2400	msiexec.exe
2400	msiexec.exe
2400	msiexec.exe
2400	msiexec.exe
2400	msiexec.exe
2400	msiexec.exe
2400	msiexec.exe
2400	msiexec.exe
2400	msiexec.exe
2400	msiexec.exe
2400	msiexec.exe
2400	msiexec.exe
2400	msiexec.exe
2400	msiexec.exe
2400	msiexec.exe
2400	msiexec.exe
2400	msiexec.exe
2400	msiexec.exe
2400	msiexec.exe
2400	msiexec.exe
2400	msiexec.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

2756 Explorer.EXE
Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

BIG BRO.exemsiexec.exe

pid process

1516 BIG BRO.exe
1516 BIG BRO.exe
1516 BIG BRO.exe
2400 msiexec.exe
2400 msiexec.exe

pid	process
2756	Explorer.EXE

Suspicious use of AdjustPrivilegeToken 10 IoCs

Processes:

BIG BRO.exemsiexec.exeExplorer.EXE

description	pid	process
Token: SeDebugPrivilege	1516	BIG BRO.exe
Token: SeDebugPrivilege	2400	msiexec.exe
Token: SeShutdownPrivilege	2756	Explorer.EXE
Token: SeCreatePagefilePrivilege	2756	Explorer.EXE
Token: SeShutdownPrivilege	2756	Explorer.EXE
Token: SeCreatePagefilePrivilege	2756	Explorer.EXE
Token: SeShutdownPrivilege	2756	Explorer.EXE
Token: SeCreatePagefilePrivilege	2756	Explorer.EXE
Token: SeShutdownPrivilege	2756	Explorer.EXE
Token: SeCreatePagefilePrivilege	2756	Explorer.EXE

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

wscript.exeExplorer.EXEmsiexec.exe

description	pid	process	target process
PID 1368 wrote to memory of 4768	1368	wscript.exe	wscript.exe
PID 1368 wrote to memory of 4768	1368	wscript.exe	wscript.exe
PID 1368 wrote to memory of 1516	1368	wscript.exe	BIG BRO.exe
PID 1368 wrote to memory of 1516	1368	wscript.exe	BIG BRO.exe
PID 1368 wrote to memory of 1516	1368	wscript.exe	BIG BRO.exe
PID 2756 wrote to memory of 2400	2756	Explorer.EXE	msiexec.exe
PID 2756 wrote to memory of 2400	2756	Explorer.EXE	msiexec.exe
PID 2756 wrote to memory of 2400	2756	Explorer.EXE	msiexec.exe
PID 2400 wrote to memory of 3408	2400	msiexec.exe	cmd.exe
PID 2400 wrote to memory of 3408	2400	msiexec.exe	cmd.exe
PID 2400 wrote to memory of 3408	2400	msiexec.exe	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2756

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\3580ae39b6b33aa67838c5c1ca91b6aebf91e470360fb13072497e85df748871.js
2⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1368

C:\Windows\System32\wscript.exe
"C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\SfehVeXIsQ.js"
3⤵
- Blocklisted process makes network request
- Drops startup file
PID:4768

C:\Users\Admin\AppData\Local\Temp\BIG BRO.exe
"C:\Users\Admin\AppData\Local\Temp\BIG BRO.exe"
3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:1516

C:\Windows\SysWOW64\msiexec.exe
"C:\Windows\SysWOW64\msiexec.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2400

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\BIG BRO.exe"
3⤵
PID:3408

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\BIG BRO.exe
Filesize
185KB

MD5
a20ea9350fa5aa4d9641723f3dfc1b31

SHA1
c23cf2953ea071eac81740a687473442c66e73de

SHA256
01afe1517575e1fd7f60e86702fc11a97cfc74718e520c6016eef42fa164b4ae

SHA512
296b4ace0af1f33abb8c3c0262999b07c8ad6e9a4c075959b43335992f1058865581b2c7d362dc824ed787f61dc9c62338778cd28e12add2ac34b086ca62e035

Download Submit
C:\Users\Admin\AppData\Local\Temp\BIG BRO.exe
Filesize
185KB

MD5
a20ea9350fa5aa4d9641723f3dfc1b31

SHA1
c23cf2953ea071eac81740a687473442c66e73de

SHA256
01afe1517575e1fd7f60e86702fc11a97cfc74718e520c6016eef42fa164b4ae

SHA512
296b4ace0af1f33abb8c3c0262999b07c8ad6e9a4c075959b43335992f1058865581b2c7d362dc824ed787f61dc9c62338778cd28e12add2ac34b086ca62e035

Download Submit
C:\Users\Admin\AppData\Roaming\SfehVeXIsQ.js
Filesize
5KB

MD5
ef7a0bcfc54e28b9a81af747b834c898

SHA1
47f605a45958a0beab476be0ef3b97434f7b999e

SHA256
24fc05651edf06401a27a583f1dbe295881a16f9f98a04321319f3873a8569a4

SHA512
c975ac3784e346a0ed4f754177f25d256b41bd0bf707f37f0e04e3d15022db5e6d9bfbe50719b8ac483f9b7406a0a3a2782a28f279a046f61faffb863ec5da31

Download Submit
memory/1516-134-0x0000000000000000-mapping.dmp

Download
memory/1516-137-0x0000000001050000-0x000000000139A000-memory.dmp

Filesize
3.3MB

Download
memory/1516-138-0x0000000000FA0000-0x0000000000FB4000-memory.dmp

Filesize
80KB

Download
memory/2400-147-0x00000000004F0000-0x000000000051F000-memory.dmp

Filesize
188KB

Download
memory/2400-140-0x0000000000000000-mapping.dmp

Download
memory/2400-141-0x0000000000960000-0x0000000000972000-memory.dmp

Filesize
72KB

Download
memory/2400-142-0x00000000004F0000-0x000000000051F000-memory.dmp

Filesize
188KB

Download
memory/2400-144-0x0000000002480000-0x00000000027CA000-memory.dmp

Filesize
3.3MB

Download
memory/2400-145-0x00000000022C0000-0x0000000002353000-memory.dmp

Filesize
588KB

Download
memory/2756-168-0x0000000003100000-0x0000000003110000-memory.dmp

Filesize
64KB

Download
memory/2756-175-0x00000000011A0000-0x00000000011B0000-memory.dmp

Filesize
64KB

Download
memory/2756-148-0x0000000003320000-0x0000000003403000-memory.dmp

Filesize
908KB

Download
memory/2756-149-0x00000000011A0000-0x00000000011B0000-memory.dmp

Filesize
64KB

Download
memory/2756-150-0x00000000011A0000-0x00000000011B0000-memory.dmp

Filesize
64KB

Download
memory/2756-151-0x00000000011A0000-0x00000000011B0000-memory.dmp

Filesize
64KB

Download
memory/2756-152-0x00000000011A0000-0x00000000011B0000-memory.dmp

Filesize
64KB

Download
memory/2756-153-0x00000000011A0000-0x00000000011B0000-memory.dmp

Filesize
64KB

Download
memory/2756-154-0x00000000011A0000-0x00000000011B0000-memory.dmp

Filesize
64KB

Download
memory/2756-155-0x00000000011A0000-0x00000000011B0000-memory.dmp

Filesize
64KB

Download
memory/2756-156-0x00000000011A0000-0x00000000011B0000-memory.dmp

Filesize
64KB

Download
memory/2756-157-0x00000000011A0000-0x00000000011B0000-memory.dmp

Filesize
64KB

Download
memory/2756-160-0x00000000011A0000-0x00000000011B0000-memory.dmp

Filesize
64KB

Download
memory/2756-159-0x00000000011A0000-0x00000000011B0000-memory.dmp

Filesize
64KB

Download
memory/2756-158-0x00000000011A0000-0x00000000011B0000-memory.dmp

Filesize
64KB

Download
memory/2756-161-0x00000000011A0000-0x00000000011B0000-memory.dmp

Filesize
64KB

Download
memory/2756-162-0x00000000011A0000-0x00000000011B0000-memory.dmp

Filesize
64KB

Download
memory/2756-163-0x00000000011A0000-0x00000000011B0000-memory.dmp

Filesize
64KB

Download
memory/2756-164-0x00000000011A0000-0x00000000011B0000-memory.dmp

Filesize
64KB

Download
memory/2756-165-0x00000000011A0000-0x00000000011B0000-memory.dmp

Filesize
64KB

Download
memory/2756-166-0x00000000011B0000-0x00000000011C0000-memory.dmp

Filesize
64KB

Download
memory/2756-167-0x0000000003100000-0x0000000003110000-memory.dmp

Filesize
64KB

Download
memory/2756-139-0x0000000002F30000-0x0000000003067000-memory.dmp

Filesize
1.2MB

Download
memory/2756-169-0x0000000003100000-0x0000000003110000-memory.dmp

Filesize
64KB

Download
memory/2756-170-0x0000000003100000-0x0000000003110000-memory.dmp

Filesize
64KB

Download
memory/2756-171-0x0000000003100000-0x0000000003110000-memory.dmp

Filesize
64KB

Download
memory/2756-172-0x00000000011A0000-0x00000000011B0000-memory.dmp

Filesize
64KB

Download
memory/2756-173-0x00000000011A0000-0x00000000011B0000-memory.dmp

Filesize
64KB

Download
memory/2756-176-0x00000000011A0000-0x00000000011B0000-memory.dmp

Filesize
64KB

Download
memory/2756-146-0x0000000003320000-0x0000000003403000-memory.dmp

Filesize
908KB

Download
memory/2756-174-0x00000000011A0000-0x00000000011B0000-memory.dmp

Filesize
64KB

Download
memory/2756-177-0x00000000011A0000-0x00000000011B0000-memory.dmp

Filesize
64KB

Download
memory/2756-178-0x00000000011A0000-0x00000000011B0000-memory.dmp

Filesize
64KB

Download
memory/2756-179-0x00000000011A0000-0x00000000011B0000-memory.dmp

Filesize
64KB

Download
memory/2756-180-0x00000000011A0000-0x00000000011B0000-memory.dmp

Filesize
64KB

Download
memory/2756-182-0x0000000003100000-0x0000000003110000-memory.dmp

Filesize
64KB

Download
memory/2756-181-0x00000000011A0000-0x00000000011B0000-memory.dmp

Filesize
64KB

Download
memory/2756-184-0x00000000011A0000-0x00000000011B0000-memory.dmp

Filesize
64KB

Download
memory/2756-187-0x00000000011A0000-0x00000000011B0000-memory.dmp

Filesize
64KB

Download
memory/2756-188-0x00000000011A0000-0x00000000011B0000-memory.dmp

Filesize
64KB

Download
memory/2756-186-0x00000000011A0000-0x00000000011B0000-memory.dmp

Filesize
64KB

Download
memory/2756-189-0x00000000011A0000-0x00000000011B0000-memory.dmp

Filesize
64KB

Download
memory/2756-185-0x00000000011A0000-0x00000000011B0000-memory.dmp

Filesize
64KB

Download
memory/2756-190-0x00000000011A0000-0x00000000011B0000-memory.dmp

Filesize
64KB

Download
memory/2756-194-0x00000000011A0000-0x00000000011B0000-memory.dmp

Filesize
64KB

Download
memory/2756-193-0x00000000011A0000-0x00000000011B0000-memory.dmp

Filesize
64KB

Download
memory/2756-192-0x00000000011A0000-0x00000000011B0000-memory.dmp

Filesize
64KB

Download
memory/2756-191-0x0000000003110000-0x0000000003120000-memory.dmp

Filesize
64KB

Download
memory/2756-195-0x00000000011A0000-0x00000000011B0000-memory.dmp

Filesize
64KB

Download
memory/2756-196-0x00000000011A0000-0x00000000011B0000-memory.dmp

Filesize
64KB

Download
memory/2756-197-0x00000000011A0000-0x00000000011B0000-memory.dmp

Filesize
64KB

Download
memory/2756-198-0x0000000003110000-0x0000000003120000-memory.dmp

Filesize
64KB

Download
memory/2756-199-0x0000000003100000-0x0000000003110000-memory.dmp

Filesize
64KB

Download
memory/2756-200-0x0000000003110000-0x0000000003120000-memory.dmp

Filesize
64KB

Download
memory/2756-201-0x0000000003110000-0x0000000003120000-memory.dmp

Filesize
64KB

Download
memory/2756-202-0x0000000003110000-0x0000000003120000-memory.dmp

Filesize
64KB

Download
memory/3408-143-0x0000000000000000-mapping.dmp

Download
memory/4768-132-0x0000000000000000-mapping.dmp

Download