formbook | 864e3cbfb352bd8662d6db3c994488c2852d471a5b9d2426552f1506fc67f68b

General

Target

uBNDpDq5KCpni8Q.exe
Size

562KB
MD5

3bb22de5c976e365a88992fe70b83b34
SHA1

816685495e57324d9a617453dc4cf42c0d2e6afc
SHA256

864e3cbfb352bd8662d6db3c994488c2852d471a5b9d2426552f1506fc67f68b
SHA512

8c0854fb7e9548b33d6ffd31605ef51fdf01009bfd7e480a4f4b91b09d26c6f8f722681bf3e8201ddd472796366191bf1fe1c65bcb9577073e724aef7da66d22

Score

10^/10

formbook xloader zzun loader persistence rat spyware stealer suricata trojan

Malware Config

Extracted

Family

xloader

Version

2.9

Campaign

zzun

Decoy

JnNtRHyNupy0GqRzAcasu7hb4rc=

Qv593NGLE7p9UNSaVkPXljAJm2QCNnc=

ePArIFWvjkkMgVEVhw4M4Jk=

26rqUwJ7dD0AiDI=

pBAxMHeK741QFw==

kHD7TPt5846pUMTX

56UnjFjHL1i0j659h3LymRnHpQj+SshC

4vKlKHflPqmWXRbrRwfPtrhb4rc=

6LBd4qButFAi

phMzGll8Ue7Fu+inq5cdnPaSugG3

NKswiQGCvZoG5FgsdHEI

rtTHnuUY8M1qVcXV

SOmECrlAt2oGAA==

L1ep9adutFAi

/UE+/AyvE6uEl28weFI=

IP+xMPQxJR4NE6TK

xvW5GN9/rqA5YUoOVt185Sf7Uw==

fRFNW9DhxL6VF7LA

KFYTfkaY741QFw==

W4JGvMBmt2oGAA==

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
suricata: ET MALWARE FormBook CnC Checkin (GET)
suricata: ET MALWARE FormBook CnC Checkin (GET)
suricata

Xloader payload 5 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/1196-63-0x000000000041F6F0-mapping.dmp	xloader
behavioral1/memory/1196-62-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral1/memory/1196-65-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral1/memory/1396-73-0x00000000000D0000-0x00000000000FC000-memory.dmp	xloader
behavioral1/memory/1396-77-0x00000000000D0000-0x00000000000FC000-memory.dmp	xloader

Blocklisted process makes network request 1 IoCs

Processes:

rundll32.exe

flow pid process

21 1396 rundll32.exe

flow	pid	process
21	1396	rundll32.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

uBNDpDq5KCpni8Q.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-4084403625-2215941253-1760665084-1000\Control Panel\International\Geo\Nation	uBNDpDq5KCpni8Q.exe

Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

1524 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
1524	cmd.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

rundll32.exe

description	ioc	process
Key created	\Registry\Machine\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\MBGXKZIXXX = "C:\\Program Files (x86)\\Lbdm\\vgavpj8dxix.exe"	rundll32.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

uBNDpDq5KCpni8Q.exeuBNDpDq5KCpni8Q.exerundll32.exe

description	pid	process	target process
PID 1976 set thread context of 1196	1976	uBNDpDq5KCpni8Q.exe	uBNDpDq5KCpni8Q.exe
PID 1196 set thread context of 1404	1196	uBNDpDq5KCpni8Q.exe	Explorer.EXE
PID 1396 set thread context of 1404	1396	rundll32.exe	Explorer.EXE

Drops file in Program Files directory 1 IoCs

Processes:

rundll32.exe

description ioc process

File opened for modification C:\Program Files (x86)\Lbdm\vgavpj8dxix.exe rundll32.exe

description	ioc	process
File opened for modification	C:\Program Files (x86)\Lbdm\vgavpj8dxix.exe	rundll32.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

rundll32.exe

description	ioc	process
Key created	\Registry\User\S-1-5-21-4084403625-2215941253-1760665084-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	rundll32.exe

Suspicious behavior: EnumeratesProcesses 21 IoCs

Processes:

uBNDpDq5KCpni8Q.exerundll32.exe

pid	process
1196	uBNDpDq5KCpni8Q.exe
1196	uBNDpDq5KCpni8Q.exe
1396	rundll32.exe
1396	rundll32.exe
1396	rundll32.exe
1396	rundll32.exe
1396	rundll32.exe
1396	rundll32.exe
1396	rundll32.exe
1396	rundll32.exe
1396	rundll32.exe
1396	rundll32.exe
1396	rundll32.exe
1396	rundll32.exe
1396	rundll32.exe
1396	rundll32.exe
1396	rundll32.exe
1396	rundll32.exe
1396	rundll32.exe
1396	rundll32.exe
1396	rundll32.exe

Suspicious behavior: MapViewOfSection 6 IoCs

Processes:

uBNDpDq5KCpni8Q.exerundll32.exe

pid process

1196 uBNDpDq5KCpni8Q.exe
1196 uBNDpDq5KCpni8Q.exe
1196 uBNDpDq5KCpni8Q.exe
1396 rundll32.exe
1396 rundll32.exe
1396 rundll32.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

uBNDpDq5KCpni8Q.exerundll32.exe

description pid process

Token: SeDebugPrivilege 1196 uBNDpDq5KCpni8Q.exe
Token: SeDebugPrivilege 1396 rundll32.exe
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

Explorer.EXE

pid process

1404 Explorer.EXE
1404 Explorer.EXE
Suspicious use of SendNotifyMessage 2 IoCs

Processes:

Explorer.EXE

pid process

1404 Explorer.EXE
1404 Explorer.EXE

description	pid	process
Token: SeDebugPrivilege	1196	uBNDpDq5KCpni8Q.exe
Token: SeDebugPrivilege	1396	rundll32.exe

pid	process
1404	Explorer.EXE
1404	Explorer.EXE

pid	process
1404	Explorer.EXE
1404	Explorer.EXE

Suspicious use of WriteProcessMemory 22 IoCs

Processes:

uBNDpDq5KCpni8Q.exeExplorer.EXErundll32.exe

description	pid	process	target process
PID 1976 wrote to memory of 1196	1976	uBNDpDq5KCpni8Q.exe	uBNDpDq5KCpni8Q.exe
PID 1976 wrote to memory of 1196	1976	uBNDpDq5KCpni8Q.exe	uBNDpDq5KCpni8Q.exe
PID 1976 wrote to memory of 1196	1976	uBNDpDq5KCpni8Q.exe	uBNDpDq5KCpni8Q.exe
PID 1976 wrote to memory of 1196	1976	uBNDpDq5KCpni8Q.exe	uBNDpDq5KCpni8Q.exe
PID 1976 wrote to memory of 1196	1976	uBNDpDq5KCpni8Q.exe	uBNDpDq5KCpni8Q.exe
PID 1976 wrote to memory of 1196	1976	uBNDpDq5KCpni8Q.exe	uBNDpDq5KCpni8Q.exe
PID 1976 wrote to memory of 1196	1976	uBNDpDq5KCpni8Q.exe	uBNDpDq5KCpni8Q.exe
PID 1404 wrote to memory of 1396	1404	Explorer.EXE	rundll32.exe
PID 1404 wrote to memory of 1396	1404	Explorer.EXE	rundll32.exe
PID 1404 wrote to memory of 1396	1404	Explorer.EXE	rundll32.exe
PID 1404 wrote to memory of 1396	1404	Explorer.EXE	rundll32.exe
PID 1404 wrote to memory of 1396	1404	Explorer.EXE	rundll32.exe
PID 1404 wrote to memory of 1396	1404	Explorer.EXE	rundll32.exe
PID 1404 wrote to memory of 1396	1404	Explorer.EXE	rundll32.exe
PID 1396 wrote to memory of 1524	1396	rundll32.exe	cmd.exe
PID 1396 wrote to memory of 1524	1396	rundll32.exe	cmd.exe
PID 1396 wrote to memory of 1524	1396	rundll32.exe	cmd.exe
PID 1396 wrote to memory of 1524	1396	rundll32.exe	cmd.exe
PID 1396 wrote to memory of 1180	1396	rundll32.exe	Firefox.exe
PID 1396 wrote to memory of 1180	1396	rundll32.exe	Firefox.exe
PID 1396 wrote to memory of 1180	1396	rundll32.exe	Firefox.exe
PID 1396 wrote to memory of 1180	1396	rundll32.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:1404

C:\Users\Admin\AppData\Local\Temp\uBNDpDq5KCpni8Q.exe
"C:\Users\Admin\AppData\Local\Temp\uBNDpDq5KCpni8Q.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1976

C:\Users\Admin\AppData\Local\Temp\uBNDpDq5KCpni8Q.exe
"{path}"
3⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:1196

C:\Windows\SysWOW64\rundll32.exe
"C:\Windows\SysWOW64\rundll32.exe"
2⤵
- Blocklisted process makes network request
- Adds 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:1396

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\uBNDpDq5KCpni8Q.exe"
3⤵
- Deletes itself
PID:1524

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:1180

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

2

T1112

Credential Access

Credentials in Files

1

T1081

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

1

T1005

Exfiltration

Command and Control

Impact

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Downloads

memory/1196-66-0x00000000008A0000-0x0000000000BA3000-memory.dmp

Filesize
3.0MB

Download
memory/1196-63-0x000000000041F6F0-mapping.dmp

Download
memory/1196-67-0x0000000000180000-0x0000000000191000-memory.dmp

Filesize
68KB

Download
memory/1196-62-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1196-65-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1196-59-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1196-60-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1396-73-0x00000000000D0000-0x00000000000FC000-memory.dmp

Filesize
176KB

Download
memory/1396-74-0x0000000002190000-0x0000000002493000-memory.dmp

Filesize
3.0MB

Download
memory/1396-77-0x00000000000D0000-0x00000000000FC000-memory.dmp

Filesize
176KB

Download
memory/1396-75-0x00000000009C0000-0x0000000000A50000-memory.dmp

Filesize
576KB

Download
memory/1396-69-0x0000000000000000-mapping.dmp

Download
memory/1396-72-0x0000000000D80000-0x0000000000D8E000-memory.dmp

Filesize
56KB

Download
memory/1404-78-0x0000000006AC0000-0x0000000006C2E000-memory.dmp

Filesize
1.4MB

Download
memory/1404-76-0x0000000006AC0000-0x0000000006C2E000-memory.dmp

Filesize
1.4MB

Download
memory/1404-68-0x0000000006460000-0x000000000656A000-memory.dmp

Filesize
1.0MB

Download
memory/1524-71-0x0000000000000000-mapping.dmp

Download
memory/1976-55-0x0000000076A21000-0x0000000076A23000-memory.dmp

Filesize
8KB

Download
memory/1976-57-0x0000000004DC0000-0x0000000004E46000-memory.dmp

Filesize
536KB

Download
memory/1976-56-0x0000000000330000-0x000000000033A000-memory.dmp

Filesize
40KB

Download
memory/1976-58-0x0000000000680000-0x00000000006B2000-memory.dmp

Filesize
200KB

Download
memory/1976-54-0x00000000010A0000-0x0000000001132000-memory.dmp

Filesize
584KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads