formbook | b77823f69e443a341655444b0f2f2f985fa078cb768470d8d20548cf7a441584

General

Target

Booking and Shipping Reference Details.exe
Size

764KB
MD5

261e1d3d96af2d57fabdf9295a6ad987
SHA1

4be2f141e6862bbf8a79bac4900a211008ac6e68
SHA256

468169b4fe61a81e910c9b820d46694ad3e089e7d276831e690f86012db80195
SHA512

0307ea1169f2193c513af63aadb10fa3a3f0c9bae5767997e940085572150e0db8480cbf4a72dc8795e78570250f0342eec768d8eb63c731519f3091ddec9a05

Score

10^/10

formbook xloader u86g loader persistence rat spyware stealer trojan

Malware Config

Extracted

Family

xloader

Version

2.3

Campaign

u86g

C2

http://www.99356a.com/u86g/

Decoy

agenciaplim.com

fastpage.info

tiantianbd.com

hanedanpirlanta.com

project1accessories.com

rebeccadoumet.com

vrdnfz.com

jeaninesatl.com

isaakwallihconstruction.com

aegis.cloud

tigerandsnow.com

thehappyadventurer.com

ahhazu.com

hiveplushoney.com

k-plan-ning.com

peresvet.one

darkworkcustoms.com

deathbok.com

blackinkswizz.com

077sb.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/1676-67-0x0000000000400000-0x0000000000428000-memory.dmp	xloader
behavioral1/memory/1676-68-0x000000000041D020-mapping.dmp	xloader
behavioral1/memory/792-76-0x0000000000070000-0x0000000000098000-memory.dmp	xloader
behavioral1/memory/1764-95-0x000000000041D020-mapping.dmp	xloader

Adds policy Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

cscript.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	cscript.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\FBCTOLW0O6S = "C:\\Program Files (x86)\\Dnlr0\\windfj8f.exe"	cscript.exe

Executes dropped EXE 2 IoCs

Processes:

windfj8f.exewindfj8f.exe

pid process

1728 windfj8f.exe
1764 windfj8f.exe
Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

1692 cmd.exe
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081

pid	process
1728	windfj8f.exe
1764	windfj8f.exe

pid	process
1692	cmd.exe

Suspicious use of SetThreadContext 5 IoCs

Processes:

Booking and Shipping Reference Details.exeBooking and Shipping Reference Details.execscript.exewindfj8f.exe

description	pid	process	target process
PID 1080 set thread context of 1676	1080	Booking and Shipping Reference Details.exe	Booking and Shipping Reference Details.exe
PID 1676 set thread context of 1228	1676	Booking and Shipping Reference Details.exe	Explorer.EXE
PID 1676 set thread context of 1228	1676	Booking and Shipping Reference Details.exe	Explorer.EXE
PID 792 set thread context of 1228	792	cscript.exe	Explorer.EXE
PID 1728 set thread context of 1764	1728	windfj8f.exe	windfj8f.exe

Drops file in Program Files directory 2 IoCs

Processes:

cscript.exeExplorer.EXE

description	ioc	process
File opened for modification	C:\Program Files (x86)\Dnlr0\windfj8f.exe	cscript.exe
File created	C:\Program Files (x86)\Dnlr0\windfj8f.exe	Explorer.EXE

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

cscript.exe

description	ioc	process
Key created	\Registry\User\S-1-5-21-2455352368-1077083310-2879168483-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	cscript.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

Booking and Shipping Reference Details.exeBooking and Shipping Reference Details.execscript.exewindfj8f.exewindfj8f.exe

pid	process
1080	Booking and Shipping Reference Details.exe
1080	Booking and Shipping Reference Details.exe
1676	Booking and Shipping Reference Details.exe
1676	Booking and Shipping Reference Details.exe
1676	Booking and Shipping Reference Details.exe
792	cscript.exe
792	cscript.exe
792	cscript.exe
792	cscript.exe
792	cscript.exe
792	cscript.exe
792	cscript.exe
792	cscript.exe
792	cscript.exe
792	cscript.exe
792	cscript.exe
792	cscript.exe
792	cscript.exe
792	cscript.exe
792	cscript.exe
792	cscript.exe
792	cscript.exe
792	cscript.exe
792	cscript.exe
792	cscript.exe
792	cscript.exe
792	cscript.exe
792	cscript.exe
792	cscript.exe
792	cscript.exe
792	cscript.exe
792	cscript.exe
792	cscript.exe
792	cscript.exe
792	cscript.exe
792	cscript.exe
792	cscript.exe
792	cscript.exe
792	cscript.exe
792	cscript.exe
792	cscript.exe
792	cscript.exe
792	cscript.exe
792	cscript.exe
792	cscript.exe
792	cscript.exe
792	cscript.exe
792	cscript.exe
792	cscript.exe
792	cscript.exe
792	cscript.exe
792	cscript.exe
792	cscript.exe
792	cscript.exe
1728	windfj8f.exe
1728	windfj8f.exe
1764	windfj8f.exe
792	cscript.exe
792	cscript.exe
792	cscript.exe
792	cscript.exe
792	cscript.exe
792	cscript.exe
792	cscript.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

1228 Explorer.EXE

Suspicious behavior: MapViewOfSection 10 IoCs

Processes:

Booking and Shipping Reference Details.execscript.exe

pid	process
1676	Booking and Shipping Reference Details.exe
1676	Booking and Shipping Reference Details.exe
1676	Booking and Shipping Reference Details.exe
1676	Booking and Shipping Reference Details.exe
792	cscript.exe
792	cscript.exe
792	cscript.exe
792	cscript.exe
792	cscript.exe
792	cscript.exe

Suspicious use of AdjustPrivilegeToken 9 IoCs

Processes:

Booking and Shipping Reference Details.exeBooking and Shipping Reference Details.execscript.exeExplorer.EXEwindfj8f.exewindfj8f.exe

description	pid	process
Token: SeDebugPrivilege	1080	Booking and Shipping Reference Details.exe
Token: SeDebugPrivilege	1676	Booking and Shipping Reference Details.exe
Token: SeDebugPrivilege	792	cscript.exe
Token: SeShutdownPrivilege	1228	Explorer.EXE
Token: SeDebugPrivilege	1728	windfj8f.exe
Token: SeDebugPrivilege	1764	windfj8f.exe
Token: SeShutdownPrivilege	1228	Explorer.EXE
Token: SeShutdownPrivilege	1228	Explorer.EXE
Token: SeShutdownPrivilege	1228	Explorer.EXE

Suspicious use of FindShellTrayWindow 4 IoCs

Processes:

Explorer.EXE

pid process

1228 Explorer.EXE
1228 Explorer.EXE
1228 Explorer.EXE
1228 Explorer.EXE

Suspicious use of SendNotifyMessage 31 IoCs

Processes:

Explorer.EXE

pid	process
1228	Explorer.EXE
1228	Explorer.EXE
1228	Explorer.EXE
1228	Explorer.EXE
1228	Explorer.EXE
1228	Explorer.EXE
1228	Explorer.EXE
1228	Explorer.EXE
1228	Explorer.EXE
1228	Explorer.EXE
1228	Explorer.EXE
1228	Explorer.EXE
1228	Explorer.EXE
1228	Explorer.EXE
1228	Explorer.EXE
1228	Explorer.EXE
1228	Explorer.EXE
1228	Explorer.EXE
1228	Explorer.EXE
1228	Explorer.EXE
1228	Explorer.EXE
1228	Explorer.EXE
1228	Explorer.EXE
1228	Explorer.EXE
1228	Explorer.EXE
1228	Explorer.EXE
1228	Explorer.EXE
1228	Explorer.EXE
1228	Explorer.EXE
1228	Explorer.EXE
1228	Explorer.EXE

Suspicious use of WriteProcessMemory 36 IoCs

Processes:

Booking and Shipping Reference Details.exeBooking and Shipping Reference Details.execscript.exeExplorer.EXEwindfj8f.exe

description	pid	process	target process
PID 1080 wrote to memory of 1676	1080	Booking and Shipping Reference Details.exe	Booking and Shipping Reference Details.exe
PID 1080 wrote to memory of 1676	1080	Booking and Shipping Reference Details.exe	Booking and Shipping Reference Details.exe
PID 1080 wrote to memory of 1676	1080	Booking and Shipping Reference Details.exe	Booking and Shipping Reference Details.exe
PID 1080 wrote to memory of 1676	1080	Booking and Shipping Reference Details.exe	Booking and Shipping Reference Details.exe
PID 1080 wrote to memory of 1676	1080	Booking and Shipping Reference Details.exe	Booking and Shipping Reference Details.exe
PID 1080 wrote to memory of 1676	1080	Booking and Shipping Reference Details.exe	Booking and Shipping Reference Details.exe
PID 1080 wrote to memory of 1676	1080	Booking and Shipping Reference Details.exe	Booking and Shipping Reference Details.exe
PID 1676 wrote to memory of 792	1676	Booking and Shipping Reference Details.exe	cscript.exe
PID 1676 wrote to memory of 792	1676	Booking and Shipping Reference Details.exe	cscript.exe
PID 1676 wrote to memory of 792	1676	Booking and Shipping Reference Details.exe	cscript.exe
PID 1676 wrote to memory of 792	1676	Booking and Shipping Reference Details.exe	cscript.exe
PID 792 wrote to memory of 1692	792	cscript.exe	cmd.exe
PID 792 wrote to memory of 1692	792	cscript.exe	cmd.exe
PID 792 wrote to memory of 1692	792	cscript.exe	cmd.exe
PID 792 wrote to memory of 1692	792	cscript.exe	cmd.exe
PID 792 wrote to memory of 1020	792	cscript.exe	Firefox.exe
PID 792 wrote to memory of 1020	792	cscript.exe	Firefox.exe
PID 792 wrote to memory of 1020	792	cscript.exe	Firefox.exe
PID 792 wrote to memory of 1020	792	cscript.exe	Firefox.exe
PID 792 wrote to memory of 1020	792	cscript.exe	Firefox.exe
PID 1228 wrote to memory of 1728	1228	Explorer.EXE	windfj8f.exe
PID 1228 wrote to memory of 1728	1228	Explorer.EXE	windfj8f.exe
PID 1228 wrote to memory of 1728	1228	Explorer.EXE	windfj8f.exe
PID 1228 wrote to memory of 1728	1228	Explorer.EXE	windfj8f.exe
PID 1728 wrote to memory of 1764	1728	windfj8f.exe	windfj8f.exe
PID 1728 wrote to memory of 1764	1728	windfj8f.exe	windfj8f.exe
PID 1728 wrote to memory of 1764	1728	windfj8f.exe	windfj8f.exe
PID 1728 wrote to memory of 1764	1728	windfj8f.exe	windfj8f.exe
PID 1728 wrote to memory of 1764	1728	windfj8f.exe	windfj8f.exe
PID 1728 wrote to memory of 1764	1728	windfj8f.exe	windfj8f.exe
PID 1728 wrote to memory of 1764	1728	windfj8f.exe	windfj8f.exe
PID 792 wrote to memory of 1880	792	cscript.exe	Firefox.exe
PID 792 wrote to memory of 1880	792	cscript.exe	Firefox.exe
PID 792 wrote to memory of 1880	792	cscript.exe	Firefox.exe
PID 792 wrote to memory of 1880	792	cscript.exe	Firefox.exe
PID 792 wrote to memory of 1880	792	cscript.exe	Firefox.exe

System policy modification 1 TTPs 1 IoCs
evasion

Modify Registry
T1112

Processes:

cscript.exe

description ioc process

Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer cscript.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer	cscript.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Drops file in Program Files directory
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1228

C:\Users\Admin\AppData\Local\Temp\Booking and Shipping Reference Details.exe
"C:\Users\Admin\AppData\Local\Temp\Booking and Shipping Reference Details.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1080

C:\Users\Admin\AppData\Local\Temp\Booking and Shipping Reference Details.exe
"C:\Users\Admin\AppData\Local\Temp\Booking and Shipping Reference Details.exe"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1676

C:\Windows\SysWOW64\cscript.exe
"C:\Windows\SysWOW64\cscript.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
- System policy modification
PID:792

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\Booking and Shipping Reference Details.exe"
5⤵
- Deletes itself
PID:1692

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
5⤵
PID:1020

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
5⤵
PID:1880

C:\Program Files (x86)\Dnlr0\windfj8f.exe
"C:\Program Files (x86)\Dnlr0\windfj8f.exe"
2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1728

C:\Program Files (x86)\Dnlr0\windfj8f.exe
"C:\Program Files (x86)\Dnlr0\windfj8f.exe"
3⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1764

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

3

T1112

Credential Access

Credentials in Files

1

T1081

Discovery

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\Program Files (x86)\Dnlr0\windfj8f.exe
MD5
261e1d3d96af2d57fabdf9295a6ad987

SHA1
4be2f141e6862bbf8a79bac4900a211008ac6e68

SHA256
468169b4fe61a81e910c9b820d46694ad3e089e7d276831e690f86012db80195

SHA512
0307ea1169f2193c513af63aadb10fa3a3f0c9bae5767997e940085572150e0db8480cbf4a72dc8795e78570250f0342eec768d8eb63c731519f3091ddec9a05

Download Submit
C:\Program Files (x86)\Dnlr0\windfj8f.exe
MD5
261e1d3d96af2d57fabdf9295a6ad987

SHA1
4be2f141e6862bbf8a79bac4900a211008ac6e68

SHA256
468169b4fe61a81e910c9b820d46694ad3e089e7d276831e690f86012db80195

SHA512
0307ea1169f2193c513af63aadb10fa3a3f0c9bae5767997e940085572150e0db8480cbf4a72dc8795e78570250f0342eec768d8eb63c731519f3091ddec9a05

Download Submit
C:\Program Files (x86)\Dnlr0\windfj8f.exe
MD5
261e1d3d96af2d57fabdf9295a6ad987

SHA1
4be2f141e6862bbf8a79bac4900a211008ac6e68

SHA256
468169b4fe61a81e910c9b820d46694ad3e089e7d276831e690f86012db80195

SHA512
0307ea1169f2193c513af63aadb10fa3a3f0c9bae5767997e940085572150e0db8480cbf4a72dc8795e78570250f0342eec768d8eb63c731519f3091ddec9a05

Download Submit
memory/792-79-0x00000000022B0000-0x000000000233F000-memory.dmp

Filesize
572KB

Download
memory/792-78-0x0000000001FA0000-0x00000000022A3000-memory.dmp

Filesize
3.0MB

Download
memory/792-76-0x0000000000070000-0x0000000000098000-memory.dmp

Filesize
160KB

Download
memory/792-75-0x0000000000710000-0x0000000000732000-memory.dmp

Filesize
136KB

Download
memory/792-74-0x0000000000000000-mapping.dmp

Download
memory/1020-82-0x0000000000000000-mapping.dmp

Download
memory/1020-90-0x000000013F780000-0x000000013F813000-memory.dmp

Filesize
588KB

Download
memory/1020-91-0x00000000023C0000-0x0000000002535000-memory.dmp

Filesize
1.5MB

Download
memory/1080-66-0x00000000007C0000-0x00000000007F3000-memory.dmp

Filesize
204KB

Download
memory/1080-65-0x0000000005380000-0x00000000053E9000-memory.dmp

Filesize
420KB

Download
memory/1080-64-0x00000000002E0000-0x00000000002F6000-memory.dmp

Filesize
88KB

Download
memory/1080-60-0x0000000001120000-0x0000000001121000-memory.dmp

Filesize
4KB

Download
memory/1080-63-0x00000000051D0000-0x00000000051D1000-memory.dmp

Filesize
4KB

Download
memory/1080-62-0x0000000075B31000-0x0000000075B33000-memory.dmp

Filesize
8KB

Download
memory/1228-73-0x00000000073C0000-0x0000000007537000-memory.dmp

Filesize
1.5MB

Download
memory/1228-71-0x0000000004220000-0x00000000042FF000-memory.dmp

Filesize
892KB

Download
memory/1228-80-0x0000000006470000-0x0000000006564000-memory.dmp

Filesize
976KB

Download
memory/1676-67-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download
memory/1676-72-0x0000000000430000-0x0000000000440000-memory.dmp

Filesize
64KB

Download
memory/1676-70-0x0000000000160000-0x0000000000170000-memory.dmp

Filesize
64KB

Download
memory/1676-69-0x00000000008A0000-0x0000000000BA3000-memory.dmp

Filesize
3.0MB

Download
memory/1676-68-0x000000000041D020-mapping.dmp

Download
memory/1692-77-0x0000000000000000-mapping.dmp

Download
memory/1728-89-0x0000000000430000-0x0000000000431000-memory.dmp

Filesize
4KB

Download
memory/1728-86-0x0000000000A60000-0x0000000000A61000-memory.dmp

Filesize
4KB

Download
memory/1728-83-0x0000000000000000-mapping.dmp

Download
memory/1764-95-0x000000000041D020-mapping.dmp

Download
memory/1764-97-0x0000000000B30000-0x0000000000E33000-memory.dmp

Filesize
3.0MB

Download
memory/1880-98-0x0000000000000000-mapping.dmp

Download
memory/1880-99-0x000000013F270000-0x000000013F303000-memory.dmp

Filesize
588KB

Download
memory/1880-100-0x0000000000060000-0x00000000001A7000-memory.dmp

Filesize
1.3MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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