formbook | e50a6adc3a4af45a5cfac4a213be964aa7ed0db5eb8b13ed7c4fc99e160cbc67

General

Target

PO930832084.exe
Size

341KB
MD5

370cdd4fca95e154659920f86124091b
SHA1

70fc058fe1dda4ed6b00da429e3849d11d1127f8
SHA256

00668e0dac77414a7a5fc8df4867e3a75fc928cdd97b57c068edb11522fecf97
SHA512

7d23b4ab99551a5b57d93d77953b9fa7702916c0cd6bbef263526d165a5dcd7825f17fba74797027ad456b3a7a3d35b1c066861fea583420389f984aadb831df

Score

10^/10

formbook xloader b6fg loader persistence rat spyware stealer trojan

Malware Config

Extracted

Family

xloader

Version

2.0

Campaign

b6fg

Decoy

multlockmt5.com

mohajrannoor.com

robynhoodofretail.info

belinv.com

hotellasab.com

kibrismosad.com

xn--fxwm39aeb590h.xn--io0a7i

resetbrasil.com

tcsonhvac.com

theresav.net

bohoqi.info

machinafuturae.com

mambavault.com

xn--980am9a.top

yumiang.com

evntmonitor.com

83003kk.com

triterm.com

8800pe.com

silvanstudio.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 4 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/1676-60-0x0000000000400000-0x0000000000427000-memory.dmp	xloader
behavioral1/memory/1676-61-0x000000000041C160-mapping.dmp	xloader
behavioral1/memory/1676-66-0x0000000000400000-0x0000000000427000-memory.dmp	xloader
behavioral1/memory/1468-72-0x0000000000080000-0x00000000000A7000-memory.dmp	xloader

Adds policy Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

help.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\M2TXNZIX = "C:\\Program Files (x86)\\Ccdd\\chkdskfx4p.exe"	help.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	help.exe

Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

Suspicious use of SetThreadContext 4 IoCs

Processes:

PO930832084.exevbc.exehelp.exe

description	pid	process	target process
PID 1444 set thread context of 1676	1444	PO930832084.exe	vbc.exe
PID 1676 set thread context of 1244	1676	vbc.exe	Explorer.EXE
PID 1676 set thread context of 1244	1676	vbc.exe	Explorer.EXE
PID 1468 set thread context of 1244	1468	help.exe	Explorer.EXE

Drops file in Program Files directory 1 IoCs

Processes:

help.exe

description ioc process

File opened for modification C:\Program Files (x86)\Ccdd\chkdskfx4p.exe help.exe

description	ioc	process
File opened for modification	C:\Program Files (x86)\Ccdd\chkdskfx4p.exe	help.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

help.exe

description	ioc	process
Key created	\Registry\User\S-1-5-21-594401021-1341801952-2355885667-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	help.exe

Suspicious behavior: EnumeratesProcesses 16 IoCs

Processes:

vbc.exehelp.exe

pid	process
1676	vbc.exe
1676	vbc.exe
1676	vbc.exe
1468	help.exe
1468	help.exe
1468	help.exe
1468	help.exe
1468	help.exe
1468	help.exe
1468	help.exe
1468	help.exe
1468	help.exe
1468	help.exe
1468	help.exe
1468	help.exe
1468	help.exe

Suspicious behavior: MapViewOfSection 8 IoCs

Processes:

vbc.exehelp.exe

pid process

1676 vbc.exe
1676 vbc.exe
1676 vbc.exe
1676 vbc.exe
1468 help.exe
1468 help.exe
1468 help.exe
1468 help.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

vbc.exehelp.exe

description pid process

Token: SeDebugPrivilege 1676 vbc.exe
Token: SeDebugPrivilege 1468 help.exe
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

Explorer.EXE

pid process

1244 Explorer.EXE
1244 Explorer.EXE
Suspicious use of SendNotifyMessage 2 IoCs

Processes:

Explorer.EXE

pid process

1244 Explorer.EXE
1244 Explorer.EXE

description	pid	process
Token: SeDebugPrivilege	1676	vbc.exe
Token: SeDebugPrivilege	1468	help.exe

pid	process
1244	Explorer.EXE
1244	Explorer.EXE

pid	process
1244	Explorer.EXE
1244	Explorer.EXE

Suspicious use of WriteProcessMemory 24 IoCs

Processes:

PO930832084.exeExplorer.EXEvbc.exehelp.exe

description	pid	process	target process
PID 1444 wrote to memory of 1676	1444	PO930832084.exe	vbc.exe
PID 1444 wrote to memory of 1676	1444	PO930832084.exe	vbc.exe
PID 1444 wrote to memory of 1676	1444	PO930832084.exe	vbc.exe
PID 1444 wrote to memory of 1676	1444	PO930832084.exe	vbc.exe
PID 1444 wrote to memory of 1676	1444	PO930832084.exe	vbc.exe
PID 1444 wrote to memory of 1676	1444	PO930832084.exe	vbc.exe
PID 1444 wrote to memory of 1676	1444	PO930832084.exe	vbc.exe
PID 1244 wrote to memory of 1296	1244	Explorer.EXE	raserver.exe
PID 1244 wrote to memory of 1296	1244	Explorer.EXE	raserver.exe
PID 1244 wrote to memory of 1296	1244	Explorer.EXE	raserver.exe
PID 1244 wrote to memory of 1296	1244	Explorer.EXE	raserver.exe
PID 1676 wrote to memory of 1468	1676	vbc.exe	help.exe
PID 1676 wrote to memory of 1468	1676	vbc.exe	help.exe
PID 1676 wrote to memory of 1468	1676	vbc.exe	help.exe
PID 1676 wrote to memory of 1468	1676	vbc.exe	help.exe
PID 1468 wrote to memory of 832	1468	help.exe	cmd.exe
PID 1468 wrote to memory of 832	1468	help.exe	cmd.exe
PID 1468 wrote to memory of 832	1468	help.exe	cmd.exe
PID 1468 wrote to memory of 832	1468	help.exe	cmd.exe
PID 1468 wrote to memory of 1056	1468	help.exe	Firefox.exe
PID 1468 wrote to memory of 1056	1468	help.exe	Firefox.exe
PID 1468 wrote to memory of 1056	1468	help.exe	Firefox.exe
PID 1468 wrote to memory of 1056	1468	help.exe	Firefox.exe
PID 1468 wrote to memory of 1056	1468	help.exe	Firefox.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1244

C:\Users\Admin\AppData\Local\Temp\PO930832084.exe
"C:\Users\Admin\AppData\Local\Temp\PO930832084.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1444

C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
"{path}"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1676

C:\Windows\SysWOW64\help.exe
"C:\Windows\SysWOW64\help.exe"
4⤵
- Adds policy Run key to start application
- Suspicious use of SetThreadContext
- Drops file in Program Files directory
- Modifies Internet Explorer settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1468

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
5⤵
PID:832

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
5⤵
PID:1056

C:\Windows\SysWOW64\autoconv.exe
"C:\Windows\SysWOW64\autoconv.exe"
2⤵
PID:2036

C:\Windows\SysWOW64\autoconv.exe
"C:\Windows\SysWOW64\autoconv.exe"
2⤵
PID:1736

C:\Windows\SysWOW64\autoconv.exe
"C:\Windows\SysWOW64\autoconv.exe"
2⤵
PID:1684

C:\Windows\SysWOW64\autoconv.exe
"C:\Windows\SysWOW64\autoconv.exe"
2⤵
PID:2000

C:\Windows\SysWOW64\autoconv.exe
"C:\Windows\SysWOW64\autoconv.exe"
2⤵
PID:1988

C:\Windows\SysWOW64\autoconv.exe
"C:\Windows\SysWOW64\autoconv.exe"
2⤵
PID:996

C:\Windows\SysWOW64\autoconv.exe
"C:\Windows\SysWOW64\autoconv.exe"
2⤵
PID:1512

C:\Windows\SysWOW64\autoconv.exe
"C:\Windows\SysWOW64\autoconv.exe"
2⤵
PID:1940

C:\Windows\SysWOW64\autoconv.exe
"C:\Windows\SysWOW64\autoconv.exe"
2⤵
PID:1756

C:\Windows\SysWOW64\autoconv.exe
"C:\Windows\SysWOW64\autoconv.exe"
2⤵
PID:648

C:\Windows\SysWOW64\autoconv.exe
"C:\Windows\SysWOW64\autoconv.exe"
2⤵
PID:296

C:\Windows\SysWOW64\autoconv.exe
"C:\Windows\SysWOW64\autoconv.exe"
2⤵
PID:1160

C:\Windows\SysWOW64\autoconv.exe
"C:\Windows\SysWOW64\autoconv.exe"
2⤵
PID:1204

C:\Windows\SysWOW64\autoconv.exe
"C:\Windows\SysWOW64\autoconv.exe"
2⤵
PID:1860

C:\Windows\SysWOW64\autofmt.exe
"C:\Windows\SysWOW64\autofmt.exe"
2⤵
PID:1488

C:\Windows\SysWOW64\raserver.exe
"C:\Windows\SysWOW64\raserver.exe"
2⤵
PID:1296

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scripting

1

T1064

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

2

T1112

Scripting

1

T1064

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/832-70-0x0000000000000000-mapping.dmp

Download
memory/1244-65-0x0000000007270000-0x00000000073CF000-memory.dmp

Filesize
1.4MB

Download
memory/1244-68-0x00000000073D0000-0x0000000007533000-memory.dmp

Filesize
1.4MB

Download
memory/1244-75-0x0000000006580000-0x0000000006676000-memory.dmp

Filesize
984KB

Download
memory/1444-55-0x0000000000480000-0x0000000000490000-memory.dmp

Filesize
64KB

Download
memory/1444-56-0x00000000006C0000-0x00000000006F6000-memory.dmp

Filesize
216KB

Download
memory/1444-54-0x0000000001290000-0x00000000012EC000-memory.dmp

Filesize
368KB

Download
memory/1468-76-0x00000000754A1000-0x00000000754A3000-memory.dmp

Filesize
8KB

Download
memory/1468-72-0x0000000000080000-0x00000000000A7000-memory.dmp

Filesize
156KB

Download
memory/1468-73-0x0000000000A30000-0x0000000000D33000-memory.dmp

Filesize
3.0MB

Download
memory/1468-71-0x00000000003B0000-0x00000000003B6000-memory.dmp

Filesize
24KB

Download
memory/1468-74-0x0000000000550000-0x00000000005DF000-memory.dmp

Filesize
572KB

Download
memory/1468-69-0x0000000000000000-mapping.dmp

Download
memory/1676-60-0x0000000000400000-0x0000000000427000-memory.dmp

Filesize
156KB

Download
memory/1676-67-0x0000000000170000-0x0000000000180000-memory.dmp

Filesize
64KB

Download
memory/1676-66-0x0000000000400000-0x0000000000427000-memory.dmp

Filesize
156KB

Download
memory/1676-64-0x0000000000130000-0x0000000000140000-memory.dmp

Filesize
64KB

Download
memory/1676-63-0x0000000000D70000-0x0000000001073000-memory.dmp

Filesize
3.0MB

Download
memory/1676-61-0x000000000041C160-mapping.dmp

Download
memory/1676-58-0x0000000000400000-0x0000000000427000-memory.dmp

Filesize
156KB

Download
memory/1676-57-0x0000000000400000-0x0000000000427000-memory.dmp

Filesize
156KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

Loading Replay Monitor...

Downloads