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
behavioral1/memory/1412-64-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/1412-68-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/672-73-0x00000000000D0000-0x00000000000FF000-memory.dmp	formbook
behavioral1/memory/672-75-0x00000000000D0000-0x00000000000FF000-memory.dmp	formbook

Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

800 cmd.exe
Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

pid	process
800	cmd.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

vbc.exevbc.exemstsc.exe

description	pid	process	target process
PID 1704 set thread context of 1412	1704	vbc.exe	vbc.exe
PID 1412 set thread context of 1344	1412	vbc.exe	Explorer.EXE
PID 672 set thread context of 1344	672	mstsc.exe	Explorer.EXE

Suspicious behavior: EnumeratesProcesses 20 IoCs

Processes:

vbc.exemstsc.exe

pid	process
1412	vbc.exe
1412	vbc.exe
672	mstsc.exe
672	mstsc.exe
672	mstsc.exe
672	mstsc.exe
672	mstsc.exe
672	mstsc.exe
672	mstsc.exe
672	mstsc.exe
672	mstsc.exe
672	mstsc.exe
672	mstsc.exe
672	mstsc.exe
672	mstsc.exe
672	mstsc.exe
672	mstsc.exe
672	mstsc.exe
672	mstsc.exe
672	mstsc.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

1344 Explorer.EXE
Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

vbc.exemstsc.exe

pid process

1412 vbc.exe
1412 vbc.exe
1412 vbc.exe
672 mstsc.exe
672 mstsc.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

vbc.exemstsc.exe

description pid process

Token: SeDebugPrivilege 1412 vbc.exe
Token: SeDebugPrivilege 672 mstsc.exe
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

Explorer.EXE

pid process

1344 Explorer.EXE
1344 Explorer.EXE
Suspicious use of SendNotifyMessage 2 IoCs

Processes:

Explorer.EXE

pid process

1344 Explorer.EXE
1344 Explorer.EXE

pid	process
1344	Explorer.EXE

description	pid	process
Token: SeDebugPrivilege	1412	vbc.exe
Token: SeDebugPrivilege	672	mstsc.exe

pid	process
1344	Explorer.EXE
1344	Explorer.EXE

pid	process
1344	Explorer.EXE
1344	Explorer.EXE

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

vbc.exeExplorer.EXEmstsc.exe

description	pid	process	target process
PID 1704 wrote to memory of 1412	1704	vbc.exe	vbc.exe
PID 1704 wrote to memory of 1412	1704	vbc.exe	vbc.exe
PID 1704 wrote to memory of 1412	1704	vbc.exe	vbc.exe
PID 1704 wrote to memory of 1412	1704	vbc.exe	vbc.exe
PID 1704 wrote to memory of 1412	1704	vbc.exe	vbc.exe
PID 1704 wrote to memory of 1412	1704	vbc.exe	vbc.exe
PID 1704 wrote to memory of 1412	1704	vbc.exe	vbc.exe
PID 1344 wrote to memory of 672	1344	Explorer.EXE	mstsc.exe
PID 1344 wrote to memory of 672	1344	Explorer.EXE	mstsc.exe
PID 1344 wrote to memory of 672	1344	Explorer.EXE	mstsc.exe
PID 1344 wrote to memory of 672	1344	Explorer.EXE	mstsc.exe
PID 672 wrote to memory of 800	672	mstsc.exe	cmd.exe
PID 672 wrote to memory of 800	672	mstsc.exe	cmd.exe
PID 672 wrote to memory of 800	672	mstsc.exe	cmd.exe
PID 672 wrote to memory of 800	672	mstsc.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:1344

C:\Users\Admin\AppData\Local\Temp\vbc.exe
"C:\Users\Admin\AppData\Local\Temp\vbc.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1704

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:1412

C:\Windows\SysWOW64\mstsc.exe
"C:\Windows\SysWOW64\mstsc.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:672

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\vbc.exe"
3⤵
- Deletes itself
PID:800

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scripting

1

T1064

Persistence

Privilege Escalation

Defense Evasion

Scripting

1

T1064

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/672-78-0x0000000000AD0000-0x0000000000B64000-memory.dmp

Filesize
592KB

Download
memory/672-75-0x00000000000D0000-0x00000000000FF000-memory.dmp

Filesize
188KB

Download
memory/672-74-0x0000000002200000-0x0000000002503000-memory.dmp

Filesize
3.0MB

Download
memory/672-73-0x00000000000D0000-0x00000000000FF000-memory.dmp

Filesize
188KB

Download
memory/672-72-0x0000000000CF0000-0x0000000000DF4000-memory.dmp

Filesize
1.0MB

Download
memory/672-71-0x0000000000CF0000-0x0000000000DF4000-memory.dmp

Filesize
1.0MB

Download
memory/1344-70-0x0000000003B20000-0x0000000003BD7000-memory.dmp

Filesize
732KB

Download
memory/1344-83-0x0000000005FF0000-0x00000000060C6000-memory.dmp

Filesize
856KB

Download
memory/1344-81-0x0000000003B20000-0x0000000003BD7000-memory.dmp

Filesize
732KB

Download
memory/1344-80-0x0000000005FF0000-0x00000000060C6000-memory.dmp

Filesize
856KB

Download
memory/1344-79-0x0000000005FF0000-0x00000000060C6000-memory.dmp

Filesize
856KB

Download
memory/1344-77-0x0000000000310000-0x0000000000410000-memory.dmp

Filesize
1024KB

Download
memory/1412-69-0x00000000002B0000-0x00000000002C5000-memory.dmp

Filesize
84KB

Download
memory/1412-61-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1412-68-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1412-67-0x0000000000870000-0x0000000000B73000-memory.dmp

Filesize
3.0MB

Download
memory/1412-64-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1412-63-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1412-62-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1704-54-0x00000000012E0000-0x00000000013CE000-memory.dmp

Filesize
952KB

Download
memory/1704-60-0x0000000000740000-0x0000000000778000-memory.dmp

Filesize
224KB

Download
memory/1704-59-0x0000000005E20000-0x0000000005ECE000-memory.dmp

Filesize
696KB

Download
memory/1704-58-0x0000000000500000-0x000000000050C000-memory.dmp

Filesize
48KB

Download
memory/1704-57-0x0000000004E50000-0x0000000004E90000-memory.dmp

Filesize
256KB

Download
memory/1704-56-0x0000000000380000-0x0000000000392000-memory.dmp

Filesize
72KB

Download
memory/1704-55-0x0000000004E50000-0x0000000004E90000-memory.dmp

Filesize
256KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads