formbook | fcc21d800f2cd942cbb2777c40a8ebf831e7fce2e6c8c77d5fa8fd4e3709bd01

General

Target

fcc21d800f2cd942cbb2777c40a8ebf831e7fce2e6c8c77d5fa8fd4e3709bd01.js
Size

346KB
MD5

21199ca311ff9236a22bc04871f49361
SHA1

14bf80cebe0fe6945ab146eb481a40d62df5f1d1
SHA256

fcc21d800f2cd942cbb2777c40a8ebf831e7fce2e6c8c77d5fa8fd4e3709bd01
SHA512

2696c74bae8749f26af0483807395356a0224c2124ac956cbb48e8026a705cc3bc1cc8056991385284636e4982dbaefb5a4887901459e41ff02bd0975f5927a0
SSDEEP

6144:So6tITpn1wYXxLJCZQk5s1TAriIgnywLzTp1vQo:76tSJ1tXGaka1TArinBHtZ/

Score

10^/10

formbook vjw0rm c0e5 rat spyware stealer trojan worm

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

c0e5

Decoy

educao.pet

e-race.store

clitzhyper.com

webcheetahtech.online

akkarr.online

odevillage.fit

yaignav.site

191u.us

misionartv.store

leadingpastor.com

claudio-vega.store

9mck753.com

system-reminder.live

landsharesfg.net

lmcsf.top

mkstoreacesse.com

2023.domains

yb8.mobi

2q02f4fyxg7ybb18.digital

logtray.shop

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\bin.exe	formbook
C:\Users\Admin\AppData\Local\Temp\bin.exe	formbook
behavioral2/memory/4048-144-0x0000000000E00000-0x0000000000E2F000-memory.dmp	formbook
behavioral2/memory/4048-146-0x0000000000E00000-0x0000000000E2F000-memory.dmp	formbook

Blocklisted process makes network request 6 IoCs

Processes:

wscript.exe

flow pid process

3 2212 wscript.exe
39 2212 wscript.exe
70 2212 wscript.exe
78 2212 wscript.exe
83 2212 wscript.exe
103 2212 wscript.exe
Executes dropped EXE 1 IoCs

Processes:

bin.exe

pid process

2876 bin.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-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation wscript.exe

flow	pid	process
3	2212	wscript.exe
39	2212	wscript.exe
70	2212	wscript.exe
78	2212	wscript.exe
83	2212	wscript.exe
103	2212	wscript.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\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\VeuzKgGKjI.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\VeuzKgGKjI.js	wscript.exe

Drops file in System32 directory 2 IoCs

Processes:

svchost.exe

description	ioc	process
File created	C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\InstallService\{547737B7-A560-42C2-8A73-0A0E4A55B347}.catalogItem	svchost.exe
File created	C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\InstallService\{142ED6BC-E452-4660-B6B3-237E3EC57B21}.catalogItem	svchost.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

bin.exewlanext.exe

description	pid	process	target process
PID 2876 set thread context of 3004	2876	bin.exe	Explorer.EXE
PID 4048 set thread context of 3004	4048	wlanext.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

Checks processor information in registry 2 TTPs 3 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

svchost.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	svchost.exe

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry

T1012

System Information Discovery

T1082

Processes:

svchost.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	svchost.exe

Suspicious behavior: EnumeratesProcesses 58 IoCs

Processes:

bin.exewlanext.exe

pid	process
2876	bin.exe
2876	bin.exe
2876	bin.exe
2876	bin.exe
4048	wlanext.exe
4048	wlanext.exe
4048	wlanext.exe
4048	wlanext.exe
4048	wlanext.exe
4048	wlanext.exe
4048	wlanext.exe
4048	wlanext.exe
4048	wlanext.exe
4048	wlanext.exe
4048	wlanext.exe
4048	wlanext.exe
4048	wlanext.exe
4048	wlanext.exe
4048	wlanext.exe
4048	wlanext.exe
4048	wlanext.exe
4048	wlanext.exe
4048	wlanext.exe
4048	wlanext.exe
4048	wlanext.exe
4048	wlanext.exe
4048	wlanext.exe
4048	wlanext.exe
4048	wlanext.exe
4048	wlanext.exe
4048	wlanext.exe
4048	wlanext.exe
4048	wlanext.exe
4048	wlanext.exe
4048	wlanext.exe
4048	wlanext.exe
4048	wlanext.exe
4048	wlanext.exe
4048	wlanext.exe
4048	wlanext.exe
4048	wlanext.exe
4048	wlanext.exe
4048	wlanext.exe
4048	wlanext.exe
4048	wlanext.exe
4048	wlanext.exe
4048	wlanext.exe
4048	wlanext.exe
4048	wlanext.exe
4048	wlanext.exe
4048	wlanext.exe
4048	wlanext.exe
4048	wlanext.exe
4048	wlanext.exe
4048	wlanext.exe
4048	wlanext.exe
4048	wlanext.exe
4048	wlanext.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

3004 Explorer.EXE
Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

bin.exewlanext.exe

pid process

2876 bin.exe
2876 bin.exe
2876 bin.exe
4048 wlanext.exe
4048 wlanext.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

bin.exewlanext.exe

description pid process

Token: SeDebugPrivilege 2876 bin.exe
Token: SeDebugPrivilege 4048 wlanext.exe
Suspicious use of FindShellTrayWindow 3 IoCs

Processes:

Explorer.EXE

pid process

3004 Explorer.EXE
3004 Explorer.EXE
3004 Explorer.EXE
Suspicious use of SendNotifyMessage 3 IoCs

Processes:

Explorer.EXE

pid process

3004 Explorer.EXE
3004 Explorer.EXE
3004 Explorer.EXE

pid	process
3004	Explorer.EXE

description	pid	process
Token: SeDebugPrivilege	2876	bin.exe
Token: SeDebugPrivilege	4048	wlanext.exe

pid	process
3004	Explorer.EXE
3004	Explorer.EXE
3004	Explorer.EXE

pid	process
3004	Explorer.EXE
3004	Explorer.EXE
3004	Explorer.EXE

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

wscript.exeExplorer.EXEwlanext.exe

description	pid	process	target process
PID 2228 wrote to memory of 2212	2228	wscript.exe	wscript.exe
PID 2228 wrote to memory of 2212	2228	wscript.exe	wscript.exe
PID 2228 wrote to memory of 2876	2228	wscript.exe	bin.exe
PID 2228 wrote to memory of 2876	2228	wscript.exe	bin.exe
PID 2228 wrote to memory of 2876	2228	wscript.exe	bin.exe
PID 3004 wrote to memory of 4048	3004	Explorer.EXE	wlanext.exe
PID 3004 wrote to memory of 4048	3004	Explorer.EXE	wlanext.exe
PID 3004 wrote to memory of 4048	3004	Explorer.EXE	wlanext.exe
PID 4048 wrote to memory of 900	4048	wlanext.exe	cmd.exe
PID 4048 wrote to memory of 900	4048	wlanext.exe	cmd.exe
PID 4048 wrote to memory of 900	4048	wlanext.exe	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:3004

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\fcc21d800f2cd942cbb2777c40a8ebf831e7fce2e6c8c77d5fa8fd4e3709bd01.js
2⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2228

C:\Windows\System32\wscript.exe
"C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\VeuzKgGKjI.js"
3⤵
- Blocklisted process makes network request
- Drops startup file
PID:2212

C:\Users\Admin\AppData\Local\Temp\bin.exe
"C:\Users\Admin\AppData\Local\Temp\bin.exe"
3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:2876

C:\Windows\SysWOW64\wlanext.exe
"C:\Windows\SysWOW64\wlanext.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4048

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\bin.exe"
3⤵
PID:900

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k netsvcs -p
1⤵
- Drops file in System32 directory
- Checks processor information in registry
- Enumerates system info in registry
PID:4580

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

3

T1012

System Information Discovery

4

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

MD5
d3ac8e00dd791752d47327d53cdb2515

SHA1
5f820ebe7772a56d71096356443b858ae0b52276

SHA256
e3bdaf1daee2ad35479c213122391cb3d27f193896aef414ce6edb516c0133aa

SHA512
4f181b863e792212507b48374b232ccffa0528a915f3f41529205a3da5c6ce2c8063ad50b57f5ec2bb0e1126eb4d2ab9eb34036d014d633c0eecf3771fff3579

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

MD5
d3ac8e00dd791752d47327d53cdb2515

SHA1
5f820ebe7772a56d71096356443b858ae0b52276

SHA256
e3bdaf1daee2ad35479c213122391cb3d27f193896aef414ce6edb516c0133aa

SHA512
4f181b863e792212507b48374b232ccffa0528a915f3f41529205a3da5c6ce2c8063ad50b57f5ec2bb0e1126eb4d2ab9eb34036d014d633c0eecf3771fff3579

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

MD5
3c661d811eda2031bebf350dc0f16603

SHA1
75ef6bda3f82dd858b1a4b768f24189aa10b94f1

SHA256
c15eb52fe816bba6b41b2bec0c7f7e08d6e2dfefff39201bc36f6b4e6fd711b8

SHA512
b66e03028f723307382092fe3d9683c8599a0227f50d46839ec70f6479c38af05514136c22e5cc03d72e2923384b08aebd699c9f0dfe92b738e667f306e4eb4f

Download Submit
memory/900-141-0x0000000000000000-mapping.dmp

Download
memory/2212-132-0x0000000000000000-mapping.dmp

Download
memory/2876-134-0x0000000000000000-mapping.dmp

Download
memory/2876-137-0x0000000000DB0000-0x00000000010FA000-memory.dmp

Filesize
3.3MB

Download
memory/2876-138-0x0000000000D70000-0x0000000000D85000-memory.dmp

Filesize
84KB

Download
memory/3004-147-0x0000000008B40000-0x0000000008CA3000-memory.dmp

Filesize
1.4MB

Download
memory/3004-139-0x00000000036A0000-0x000000000376E000-memory.dmp

Filesize
824KB

Download
memory/3004-148-0x0000000008B40000-0x0000000008CA3000-memory.dmp

Filesize
1.4MB

Download
memory/4048-140-0x0000000000000000-mapping.dmp

Download
memory/4048-144-0x0000000000E00000-0x0000000000E2F000-memory.dmp

Filesize
188KB

Download
memory/4048-145-0x00000000013C0000-0x0000000001454000-memory.dmp

Filesize
592KB

Download
memory/4048-143-0x0000000000BE0000-0x0000000000BF7000-memory.dmp

Filesize
92KB

Download
memory/4048-146-0x0000000000E00000-0x0000000000E2F000-memory.dmp

Filesize
188KB

Download
memory/4048-142-0x0000000001720000-0x0000000001A6A000-memory.dmp

Filesize
3.3MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads