formbook | bcb2ba08e3ef1e2650c2276989c6d12e2277015deee0e4731f7099be07e63788

General

Target

vbc.exe
Size

929KB
MD5

a2b6815c9698017685973d659c6fa3ba
SHA1

711825fd9865c9b1ca177df8301058a96bf7968d
SHA256

bcb2ba08e3ef1e2650c2276989c6d12e2277015deee0e4731f7099be07e63788
SHA512

3f943ead12ce94547e336ae9ac16b74f37a2f37c1b44180a606c0155faae0b664ec8bfca1a622309ffa3bf202a7bfd81abfd3b06babc6d02efa10f449837d79c
SSDEEP

12288:6cNpFJUGzl06/TgTU48e9NyCGTyIkNOmun7ZI/GYLS+bmtHq75JM/GQsqYn:Pzl06MFxyCGTRkNOpFI/fmEaqVJM/By

Score

10^/10

formbook bk08 rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

bk08

Decoy

chloie.net

fastingersecure.monster

foundersterrace.online

ytorly.xyz

kiralayolla.com

corporacionalpi.com

planfortheworld.com

disciplinecoaching.co.uk

rubi33.com

digitlabmedia.com

ky20033.com

h4q7.com

91ye260.xyz

coconceptevents.com

ukusizas.africa

utainnovative.africa

ted-clean.co.uk

haus-huelsche.com

ca-refund.website

football.salon

Signatures

Formbook
Formbook is a data stealing malware which is capable of stealing data.
trojan spyware stealer formbook

Formbook payload 4 IoCs

rat

Processes:

resource	yara_rule
behavioral2/memory/1712-140-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/1712-144-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/4244-150-0x0000000000D20000-0x0000000000D4F000-memory.dmp	formbook
behavioral2/memory/4244-152-0x0000000000D20000-0x0000000000D4F000-memory.dmp	formbook

Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

Suspicious use of SetThreadContext 3 IoCs

Processes:

vbc.exevbc.exewlanext.exe

description	pid	process	target process
PID 4052 set thread context of 1712	4052	vbc.exe	vbc.exe
PID 1712 set thread context of 3220	1712	vbc.exe	Explorer.EXE
PID 4244 set thread context of 3220	4244	wlanext.exe	Explorer.EXE

Suspicious behavior: EnumeratesProcesses 46 IoCs

Processes:

vbc.exevbc.exewlanext.exe

pid	process
4052	vbc.exe
4052	vbc.exe
1712	vbc.exe
1712	vbc.exe
1712	vbc.exe
1712	vbc.exe
4244	wlanext.exe
4244	wlanext.exe
4244	wlanext.exe
4244	wlanext.exe
4244	wlanext.exe
4244	wlanext.exe
4244	wlanext.exe
4244	wlanext.exe
4244	wlanext.exe
4244	wlanext.exe
4244	wlanext.exe
4244	wlanext.exe
4244	wlanext.exe
4244	wlanext.exe
4244	wlanext.exe
4244	wlanext.exe
4244	wlanext.exe
4244	wlanext.exe
4244	wlanext.exe
4244	wlanext.exe
4244	wlanext.exe
4244	wlanext.exe
4244	wlanext.exe
4244	wlanext.exe
4244	wlanext.exe
4244	wlanext.exe
4244	wlanext.exe
4244	wlanext.exe
4244	wlanext.exe
4244	wlanext.exe
4244	wlanext.exe
4244	wlanext.exe
4244	wlanext.exe
4244	wlanext.exe
4244	wlanext.exe
4244	wlanext.exe
4244	wlanext.exe
4244	wlanext.exe
4244	wlanext.exe
4244	wlanext.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

3220 Explorer.EXE
Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

vbc.exewlanext.exe

pid process

1712 vbc.exe
1712 vbc.exe
1712 vbc.exe
4244 wlanext.exe
4244 wlanext.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

vbc.exevbc.exewlanext.exe

description pid process

Token: SeDebugPrivilege 4052 vbc.exe
Token: SeDebugPrivilege 1712 vbc.exe
Token: SeDebugPrivilege 4244 wlanext.exe

pid	process
3220	Explorer.EXE

pid	process
1712	vbc.exe
1712	vbc.exe
1712	vbc.exe
4244	wlanext.exe
4244	wlanext.exe

description	pid	process
Token: SeDebugPrivilege	4052	vbc.exe
Token: SeDebugPrivilege	1712	vbc.exe
Token: SeDebugPrivilege	4244	wlanext.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

vbc.exeExplorer.EXEwlanext.exe

description	pid	process	target process
PID 4052 wrote to memory of 4060	4052	vbc.exe	vbc.exe
PID 4052 wrote to memory of 4060	4052	vbc.exe	vbc.exe
PID 4052 wrote to memory of 4060	4052	vbc.exe	vbc.exe
PID 4052 wrote to memory of 1712	4052	vbc.exe	vbc.exe
PID 4052 wrote to memory of 1712	4052	vbc.exe	vbc.exe
PID 4052 wrote to memory of 1712	4052	vbc.exe	vbc.exe
PID 4052 wrote to memory of 1712	4052	vbc.exe	vbc.exe
PID 4052 wrote to memory of 1712	4052	vbc.exe	vbc.exe
PID 4052 wrote to memory of 1712	4052	vbc.exe	vbc.exe
PID 3220 wrote to memory of 4244	3220	Explorer.EXE	wlanext.exe
PID 3220 wrote to memory of 4244	3220	Explorer.EXE	wlanext.exe
PID 3220 wrote to memory of 4244	3220	Explorer.EXE	wlanext.exe
PID 4244 wrote to memory of 1980	4244	wlanext.exe	cmd.exe
PID 4244 wrote to memory of 1980	4244	wlanext.exe	cmd.exe
PID 4244 wrote to memory of 1980	4244	wlanext.exe	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:3220

C:\Users\Admin\AppData\Local\Temp\vbc.exe
"C:\Users\Admin\AppData\Local\Temp\vbc.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4052

C:\Users\Admin\AppData\Local\Temp\vbc.exe
"C:\Users\Admin\AppData\Local\Temp\vbc.exe"
3⤵
PID:4060

C:\Users\Admin\AppData\Local\Temp\vbc.exe
"C:\Users\Admin\AppData\Local\Temp\vbc.exe"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:1712

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:4244

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\vbc.exe"
3⤵
PID:1980

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scripting

1

T1064

Persistence

Privilege Escalation

Defense Evasion

Scripting

1

T1064

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/1712-143-0x0000000001080000-0x00000000013CA000-memory.dmp

Filesize
3.3MB

Download
memory/1712-145-0x0000000001010000-0x0000000001025000-memory.dmp

Filesize
84KB

Download
memory/1712-144-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1712-140-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/3220-158-0x0000000008EA0000-0x0000000009021000-memory.dmp

Filesize
1.5MB

Download
memory/3220-156-0x0000000008EA0000-0x0000000009021000-memory.dmp

Filesize
1.5MB

Download
memory/3220-155-0x0000000008EA0000-0x0000000009021000-memory.dmp

Filesize
1.5MB

Download
memory/3220-146-0x0000000008DB0000-0x0000000008E95000-memory.dmp

Filesize
916KB

Download
memory/4052-138-0x0000000005AE0000-0x0000000005AF0000-memory.dmp

Filesize
64KB

Download
memory/4052-139-0x0000000008440000-0x00000000084DC000-memory.dmp

Filesize
624KB

Download
memory/4052-133-0x0000000000DF0000-0x0000000000EDE000-memory.dmp

Filesize
952KB

Download
memory/4052-137-0x0000000005AE0000-0x0000000005AF0000-memory.dmp

Filesize
64KB

Download
memory/4052-136-0x0000000005920000-0x000000000592A000-memory.dmp

Filesize
40KB

Download
memory/4052-135-0x0000000005870000-0x0000000005902000-memory.dmp

Filesize
584KB

Download
memory/4052-134-0x0000000005F10000-0x00000000064B4000-memory.dmp

Filesize
5.6MB

Download
memory/4244-147-0x0000000000250000-0x0000000000267000-memory.dmp

Filesize
92KB

Download
memory/4244-149-0x0000000000250000-0x0000000000267000-memory.dmp

Filesize
92KB

Download
memory/4244-150-0x0000000000D20000-0x0000000000D4F000-memory.dmp

Filesize
188KB

Download
memory/4244-151-0x0000000001740000-0x0000000001A8A000-memory.dmp

Filesize
3.3MB

Download
memory/4244-152-0x0000000000D20000-0x0000000000D4F000-memory.dmp

Filesize
188KB

Download
memory/4244-154-0x0000000001570000-0x0000000001604000-memory.dmp

Filesize
592KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads