formbook | 3580ae39b6b33aa67838c5c1ca91b6aebf91e470360fb13072497e85df748871

General

Target

Urgent quote request -pdf-.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/3272-142-0x0000000000E00000-0x0000000000E2F000-memory.dmp	formbook
behavioral2/memory/3272-147-0x0000000000E00000-0x0000000000E2F000-memory.dmp	formbook

Blocklisted process makes network request 6 IoCs

Processes:

wscript.exe

flow pid process

9 1044 wscript.exe
20 1044 wscript.exe
34 1044 wscript.exe
49 1044 wscript.exe
76 1044 wscript.exe
94 1044 wscript.exe
Executes dropped EXE 1 IoCs

Processes:

BIG BRO.exe

pid process

400 BIG BRO.exe

flow	pid	process
9	1044	wscript.exe
20	1044	wscript.exe
34	1044	wscript.exe
49	1044	wscript.exe
76	1044	wscript.exe
94	1044	wscript.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-1-5-21-2629973501-4017243118-3254762364-1000\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.exeNETSTAT.EXE

description	pid	process	target process
PID 400 set thread context of 2152	400	BIG BRO.exe	Explorer.EXE
PID 3272 set thread context of 2152	3272	NETSTAT.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
Gathers network information 2 TTPs 1 IoCs
Uses commandline utility to view network configuration.

System Information Discovery
T1082

Command-Line Interface
T1059

Processes:

NETSTAT.EXE

pid process

3272 NETSTAT.EXE

pid	process
3272	NETSTAT.EXE

Suspicious behavior: EnumeratesProcesses 60 IoCs

Processes:

BIG BRO.exeNETSTAT.EXE

pid	process
400	BIG BRO.exe
400	BIG BRO.exe
400	BIG BRO.exe
400	BIG BRO.exe
3272	NETSTAT.EXE
3272	NETSTAT.EXE
3272	NETSTAT.EXE
3272	NETSTAT.EXE
3272	NETSTAT.EXE
3272	NETSTAT.EXE
3272	NETSTAT.EXE
3272	NETSTAT.EXE
3272	NETSTAT.EXE
3272	NETSTAT.EXE
3272	NETSTAT.EXE
3272	NETSTAT.EXE
3272	NETSTAT.EXE
3272	NETSTAT.EXE
3272	NETSTAT.EXE
3272	NETSTAT.EXE
3272	NETSTAT.EXE
3272	NETSTAT.EXE
3272	NETSTAT.EXE
3272	NETSTAT.EXE
3272	NETSTAT.EXE
3272	NETSTAT.EXE
3272	NETSTAT.EXE
3272	NETSTAT.EXE
3272	NETSTAT.EXE
3272	NETSTAT.EXE
3272	NETSTAT.EXE
3272	NETSTAT.EXE
3272	NETSTAT.EXE
3272	NETSTAT.EXE
3272	NETSTAT.EXE
3272	NETSTAT.EXE
3272	NETSTAT.EXE
3272	NETSTAT.EXE
3272	NETSTAT.EXE
3272	NETSTAT.EXE
3272	NETSTAT.EXE
3272	NETSTAT.EXE
3272	NETSTAT.EXE
3272	NETSTAT.EXE
3272	NETSTAT.EXE
3272	NETSTAT.EXE
3272	NETSTAT.EXE
3272	NETSTAT.EXE
3272	NETSTAT.EXE
3272	NETSTAT.EXE
3272	NETSTAT.EXE
3272	NETSTAT.EXE
3272	NETSTAT.EXE
3272	NETSTAT.EXE
3272	NETSTAT.EXE
3272	NETSTAT.EXE
3272	NETSTAT.EXE
3272	NETSTAT.EXE
3272	NETSTAT.EXE
3272	NETSTAT.EXE

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

2152 Explorer.EXE
Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

BIG BRO.exeNETSTAT.EXE

pid process

400 BIG BRO.exe
400 BIG BRO.exe
400 BIG BRO.exe
3272 NETSTAT.EXE
3272 NETSTAT.EXE
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

BIG BRO.exeNETSTAT.EXE

description pid process

Token: SeDebugPrivilege 400 BIG BRO.exe
Token: SeDebugPrivilege 3272 NETSTAT.EXE

pid	process
2152	Explorer.EXE

description	pid	process
Token: SeDebugPrivilege	400	BIG BRO.exe
Token: SeDebugPrivilege	3272	NETSTAT.EXE

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

wscript.exeExplorer.EXENETSTAT.EXE

description	pid	process	target process
PID 1188 wrote to memory of 1044	1188	wscript.exe	wscript.exe
PID 1188 wrote to memory of 1044	1188	wscript.exe	wscript.exe
PID 1188 wrote to memory of 400	1188	wscript.exe	BIG BRO.exe
PID 1188 wrote to memory of 400	1188	wscript.exe	BIG BRO.exe
PID 1188 wrote to memory of 400	1188	wscript.exe	BIG BRO.exe
PID 2152 wrote to memory of 3272	2152	Explorer.EXE	NETSTAT.EXE
PID 2152 wrote to memory of 3272	2152	Explorer.EXE	NETSTAT.EXE
PID 2152 wrote to memory of 3272	2152	Explorer.EXE	NETSTAT.EXE
PID 3272 wrote to memory of 4704	3272	NETSTAT.EXE	cmd.exe
PID 3272 wrote to memory of 4704	3272	NETSTAT.EXE	cmd.exe
PID 3272 wrote to memory of 4704	3272	NETSTAT.EXE	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:2152
- C:\Windows\system32\wscript.exe
  wscript.exe "C:\Users\Admin\AppData\Local\Temp\Urgent quote request -pdf-.js"
  2⤵
  - Checks computer location settings
  - Suspicious use of WriteProcessMemory
  PID:1188
- - 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:1044
- - 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:400
- C:\Windows\SysWOW64\NETSTAT.EXE
  "C:\Windows\SysWOW64\NETSTAT.EXE"
  2⤵
  - Suspicious use of SetThreadContext
  - Gathers network information
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3272
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\BIG BRO.exe"
    3⤵
    PID:4704

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Command-Line Interface

1

T1059

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

3

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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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/400-134-0x0000000000000000-mapping.dmp

Download
memory/400-137-0x0000000001930000-0x0000000001C7A000-memory.dmp

Filesize
3.3MB

Download
memory/400-138-0x00000000018F0000-0x0000000001904000-memory.dmp

Filesize
80KB

Download
memory/1044-132-0x0000000000000000-mapping.dmp

Download
memory/2152-146-0x0000000008060000-0x00000000081D6000-memory.dmp

Filesize
1.5MB

Download
memory/2152-139-0x0000000007CB0000-0x0000000007DD4000-memory.dmp

Filesize
1.1MB

Download
memory/2152-148-0x0000000008060000-0x00000000081D6000-memory.dmp

Filesize
1.5MB

Download
memory/3272-140-0x0000000000000000-mapping.dmp

Download
memory/3272-144-0x0000000001520000-0x000000000186A000-memory.dmp

Filesize
3.3MB

Download
memory/3272-145-0x00000000013B0000-0x0000000001443000-memory.dmp

Filesize
588KB

Download
memory/3272-142-0x0000000000E00000-0x0000000000E2F000-memory.dmp

Filesize
188KB

Download
memory/3272-147-0x0000000000E00000-0x0000000000E2F000-memory.dmp

Filesize
188KB

Download
memory/3272-141-0x0000000000E40000-0x0000000000E4B000-memory.dmp

Filesize
44KB

Download
memory/4704-143-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads