formbook | 63289870bb6e2bbb13afd47bf630c048e593afacc5c968939855f85ca5022ea4

General

Target

vbc.exe
Size

889KB
MD5

786180a5141bf4ea48e26910d2bf9061
SHA1

f77224c2ac0c9dd746fc22b102da2a534bf889e2
SHA256

63289870bb6e2bbb13afd47bf630c048e593afacc5c968939855f85ca5022ea4
SHA512

cbdb00fe20e39c52ac736e75bc2c93abecc0d0ecbc9c10d7b62e88f6e574f99ee545a5ca34578dcdc564cd32fe3e9fb1258bc35d09304b094a32c2f89a492d28

Score

10^/10

formbook xloader loader rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

C2

http://www.stonescapes1.com/de92/

Decoy

zindaginews.com

tyelevator.com

schustermaninterests.com

algemixdelchef.com

doubscollectivites.com

e-butchery.com

hellbentmask.com

jumbpprivacy.com

teeniestiedye.com

playfulartwork.com

desertvacahs.com

w5470-hed.net

nepalearningpods.com

smoothandsleek.com

thecannaglow.com

torrentkittyla.com

industrytoyou.com

raquelvargas.net

rlc-nc.net

cryptoprises.com

Signatures

Formbook
Formbook is a data stealing malware which is capable of stealing data.
trojan spyware stealer formbook
Xloader
Xloader is a rebranded version of Formbook malware.
loader xloader

Xloader Payload 3 IoCs

rat

Processes:

resource	yara_rule
behavioral2/memory/748-12-0x0000000000400000-0x0000000000428000-memory.dmp	xloader
behavioral2/memory/748-13-0x000000000041D010-mapping.dmp	xloader
behavioral2/memory/3124-22-0x0000000000C70000-0x0000000000C98000-memory.dmp	xloader

Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

Suspicious use of SetThreadContext 3 IoCs

Processes:

vbc.exevbc.exemsiexec.exe

description	pid	process	target process
PID 4032 set thread context of 748	4032	vbc.exe	vbc.exe
PID 748 set thread context of 2828	748	vbc.exe	Explorer.EXE
PID 3124 set thread context of 2828	3124	msiexec.exe	Explorer.EXE

Suspicious behavior: EnumeratesProcesses 48 IoCs

Processes:

vbc.exevbc.exemsiexec.exe

pid	process
4032	vbc.exe
4032	vbc.exe
748	vbc.exe
748	vbc.exe
748	vbc.exe
748	vbc.exe
3124	msiexec.exe
3124	msiexec.exe
3124	msiexec.exe
3124	msiexec.exe
3124	msiexec.exe
3124	msiexec.exe
3124	msiexec.exe
3124	msiexec.exe
3124	msiexec.exe
3124	msiexec.exe
3124	msiexec.exe
3124	msiexec.exe
3124	msiexec.exe
3124	msiexec.exe
3124	msiexec.exe
3124	msiexec.exe
3124	msiexec.exe
3124	msiexec.exe
3124	msiexec.exe
3124	msiexec.exe
3124	msiexec.exe
3124	msiexec.exe
3124	msiexec.exe
3124	msiexec.exe
3124	msiexec.exe
3124	msiexec.exe
3124	msiexec.exe
3124	msiexec.exe
3124	msiexec.exe
3124	msiexec.exe
3124	msiexec.exe
3124	msiexec.exe
3124	msiexec.exe
3124	msiexec.exe
3124	msiexec.exe
3124	msiexec.exe
3124	msiexec.exe
3124	msiexec.exe
3124	msiexec.exe
3124	msiexec.exe
3124	msiexec.exe
3124	msiexec.exe

Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

vbc.exemsiexec.exe

pid process

748 vbc.exe
748 vbc.exe
748 vbc.exe
3124 msiexec.exe
3124 msiexec.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

vbc.exevbc.exemsiexec.exe

description pid process

Token: SeDebugPrivilege 4032 vbc.exe
Token: SeDebugPrivilege 748 vbc.exe
Token: SeDebugPrivilege 3124 msiexec.exe

pid	process
748	vbc.exe
748	vbc.exe
748	vbc.exe
3124	msiexec.exe
3124	msiexec.exe

description	pid	process
Token: SeDebugPrivilege	4032	vbc.exe
Token: SeDebugPrivilege	748	vbc.exe
Token: SeDebugPrivilege	3124	msiexec.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

vbc.exeExplorer.EXEmsiexec.exe

description	pid	process	target process
PID 4032 wrote to memory of 760	4032	vbc.exe	vbc.exe
PID 4032 wrote to memory of 760	4032	vbc.exe	vbc.exe
PID 4032 wrote to memory of 760	4032	vbc.exe	vbc.exe
PID 4032 wrote to memory of 748	4032	vbc.exe	vbc.exe
PID 4032 wrote to memory of 748	4032	vbc.exe	vbc.exe
PID 4032 wrote to memory of 748	4032	vbc.exe	vbc.exe
PID 4032 wrote to memory of 748	4032	vbc.exe	vbc.exe
PID 4032 wrote to memory of 748	4032	vbc.exe	vbc.exe
PID 4032 wrote to memory of 748	4032	vbc.exe	vbc.exe
PID 2828 wrote to memory of 3124	2828	Explorer.EXE	msiexec.exe
PID 2828 wrote to memory of 3124	2828	Explorer.EXE	msiexec.exe
PID 2828 wrote to memory of 3124	2828	Explorer.EXE	msiexec.exe
PID 3124 wrote to memory of 2176	3124	msiexec.exe	cmd.exe
PID 3124 wrote to memory of 2176	3124	msiexec.exe	cmd.exe
PID 3124 wrote to memory of 2176	3124	msiexec.exe	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:2828

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:4032

C:\Users\Admin\AppData\Local\Temp\vbc.exe
"{path}"
3⤵
PID:760

C:\Users\Admin\AppData\Local\Temp\vbc.exe
"{path}"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:748

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:3124

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\vbc.exe"
3⤵
PID:2176

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/748-12-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download
memory/748-17-0x0000000001260000-0x0000000001270000-memory.dmp

Filesize
64KB

Download
memory/748-16-0x00000000017F0000-0x0000000001B10000-memory.dmp

Filesize
3.1MB

Download
memory/748-13-0x000000000041D010-mapping.dmp

Download
memory/2176-20-0x0000000000000000-mapping.dmp

Download
memory/2828-18-0x00000000058B0000-0x00000000059DA000-memory.dmp

Filesize
1.2MB

Download
memory/2828-25-0x00000000067F0000-0x0000000006948000-memory.dmp

Filesize
1.3MB

Download
memory/3124-21-0x0000000001270000-0x0000000001282000-memory.dmp

Filesize
72KB

Download
memory/3124-19-0x0000000000000000-mapping.dmp

Download
memory/3124-24-0x0000000004A20000-0x0000000004AAF000-memory.dmp

Filesize
572KB

Download
memory/3124-23-0x0000000004BE0000-0x0000000004F00000-memory.dmp

Filesize
3.1MB

Download
memory/3124-22-0x0000000000C70000-0x0000000000C98000-memory.dmp

Filesize
160KB

Download
memory/4032-5-0x0000000005B00000-0x0000000005B01000-memory.dmp

Filesize
4KB

Download
memory/4032-10-0x00000000073F0000-0x0000000007447000-memory.dmp

Filesize
348KB

Download
memory/4032-3-0x0000000000CF0000-0x0000000000CF1000-memory.dmp

Filesize
4KB

Download
memory/4032-2-0x0000000073940000-0x000000007402E000-memory.dmp

Filesize
6.9MB

Download
memory/4032-11-0x0000000007B00000-0x0000000007B01000-memory.dmp

Filesize
4KB

Download
memory/4032-8-0x0000000005620000-0x0000000005621000-memory.dmp

Filesize
4KB

Download
memory/4032-6-0x00000000056A0000-0x00000000056A1000-memory.dmp

Filesize
4KB

Download
memory/4032-7-0x0000000005930000-0x0000000005931000-memory.dmp

Filesize
4KB

Download
memory/4032-9-0x0000000005830000-0x000000000583E000-memory.dmp

Filesize
56KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

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Downloads