formbook | 8fafbbb38c64c1405f96387180d8edd24593698e10ae3e2cc51aff8ca57623a8

General

Target

Payment_Advice.exe
Size

889KB
MD5

b34bfacc4c2f20b5109f7a19c7027468
SHA1

be376771cbb432bf2dfe89e795017d722574d57e
SHA256

8fafbbb38c64c1405f96387180d8edd24593698e10ae3e2cc51aff8ca57623a8
SHA512

599fb61db8f215e741a8ed3d5b292ac3a38746993781f161ef386f473fa38ef862b0c1f0a493ddd9fd3642fb140bfff44f3ed33ff8699746baf282299384a66f

Score

10^/10

formbook xloader zzun loader persistence rat spyware stealer 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

Xloader payload 5 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/1632-62-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral1/memory/1632-63-0x000000000041F6F0-mapping.dmp	xloader
behavioral1/memory/1632-65-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral1/memory/1564-73-0x0000000000080000-0x00000000000AC000-memory.dmp	xloader
behavioral1/memory/1564-77-0x0000000000080000-0x00000000000AC000-memory.dmp	xloader

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:

Payment_Advice.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3762437355-3468409815-1164039494-1000\Control Panel\International\Geo\Nation	Payment_Advice.exe

Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

2040 cmd.exe

pid	process
2040	cmd.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

raserver.exe

description	ioc	process
Key created	\Registry\Machine\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run	raserver.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\HTNTCTG0DHU = "C:\\Program Files (x86)\\Tzv18dx98\\msn0r8ftbp.exe"	raserver.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

Payment_Advice.exePayment_Advice.exeraserver.exe

description	pid	process	target process
PID 2020 set thread context of 1632	2020	Payment_Advice.exe	Payment_Advice.exe
PID 1632 set thread context of 1200	1632	Payment_Advice.exe	Explorer.EXE
PID 1564 set thread context of 1200	1564	raserver.exe	Explorer.EXE

Drops file in Program Files directory 1 IoCs

Processes:

raserver.exe

description ioc process

File opened for modification C:\Program Files (x86)\Tzv18dx98\msn0r8ftbp.exe raserver.exe

description	ioc	process
File opened for modification	C:\Program Files (x86)\Tzv18dx98\msn0r8ftbp.exe	raserver.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

raserver.exe

description	ioc	process
Key created	\Registry\User\S-1-5-21-3762437355-3468409815-1164039494-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	raserver.exe

Suspicious behavior: EnumeratesProcesses 25 IoCs

Processes:

Payment_Advice.exePayment_Advice.exeraserver.exe

pid	process
2020	Payment_Advice.exe
2020	Payment_Advice.exe
2020	Payment_Advice.exe
2020	Payment_Advice.exe
1632	Payment_Advice.exe
1632	Payment_Advice.exe
1564	raserver.exe
1564	raserver.exe
1564	raserver.exe
1564	raserver.exe
1564	raserver.exe
1564	raserver.exe
1564	raserver.exe
1564	raserver.exe
1564	raserver.exe
1564	raserver.exe
1564	raserver.exe
1564	raserver.exe
1564	raserver.exe
1564	raserver.exe
1564	raserver.exe
1564	raserver.exe
1564	raserver.exe
1564	raserver.exe
1564	raserver.exe

Suspicious behavior: MapViewOfSection 7 IoCs

Processes:

Payment_Advice.exeraserver.exe

pid process

1632 Payment_Advice.exe
1632 Payment_Advice.exe
1632 Payment_Advice.exe
1564 raserver.exe
1564 raserver.exe
1564 raserver.exe
1564 raserver.exe

pid	process
1632	Payment_Advice.exe
1632	Payment_Advice.exe
1632	Payment_Advice.exe
1564	raserver.exe
1564	raserver.exe
1564	raserver.exe
1564	raserver.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

Payment_Advice.exePayment_Advice.exeraserver.exe

description	pid	process
Token: SeDebugPrivilege	2020	Payment_Advice.exe
Token: SeDebugPrivilege	1632	Payment_Advice.exe
Token: SeDebugPrivilege	1564	raserver.exe

Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

Explorer.EXE

pid process

1200 Explorer.EXE
1200 Explorer.EXE
Suspicious use of SendNotifyMessage 2 IoCs

Processes:

Explorer.EXE

pid process

1200 Explorer.EXE
1200 Explorer.EXE

pid	process
1200	Explorer.EXE
1200	Explorer.EXE

pid	process
1200	Explorer.EXE
1200	Explorer.EXE

Suspicious use of WriteProcessMemory 36 IoCs

Processes:

Payment_Advice.exeExplorer.EXEraserver.exe

description	pid	process	target process
PID 2020 wrote to memory of 2012	2020	Payment_Advice.exe	Payment_Advice.exe
PID 2020 wrote to memory of 2012	2020	Payment_Advice.exe	Payment_Advice.exe
PID 2020 wrote to memory of 2012	2020	Payment_Advice.exe	Payment_Advice.exe
PID 2020 wrote to memory of 2012	2020	Payment_Advice.exe	Payment_Advice.exe
PID 2020 wrote to memory of 1320	2020	Payment_Advice.exe	Payment_Advice.exe
PID 2020 wrote to memory of 1320	2020	Payment_Advice.exe	Payment_Advice.exe
PID 2020 wrote to memory of 1320	2020	Payment_Advice.exe	Payment_Advice.exe
PID 2020 wrote to memory of 1320	2020	Payment_Advice.exe	Payment_Advice.exe
PID 2020 wrote to memory of 944	2020	Payment_Advice.exe	Payment_Advice.exe
PID 2020 wrote to memory of 944	2020	Payment_Advice.exe	Payment_Advice.exe
PID 2020 wrote to memory of 944	2020	Payment_Advice.exe	Payment_Advice.exe
PID 2020 wrote to memory of 944	2020	Payment_Advice.exe	Payment_Advice.exe
PID 2020 wrote to memory of 1548	2020	Payment_Advice.exe	Payment_Advice.exe
PID 2020 wrote to memory of 1548	2020	Payment_Advice.exe	Payment_Advice.exe
PID 2020 wrote to memory of 1548	2020	Payment_Advice.exe	Payment_Advice.exe
PID 2020 wrote to memory of 1548	2020	Payment_Advice.exe	Payment_Advice.exe
PID 2020 wrote to memory of 1632	2020	Payment_Advice.exe	Payment_Advice.exe
PID 2020 wrote to memory of 1632	2020	Payment_Advice.exe	Payment_Advice.exe
PID 2020 wrote to memory of 1632	2020	Payment_Advice.exe	Payment_Advice.exe
PID 2020 wrote to memory of 1632	2020	Payment_Advice.exe	Payment_Advice.exe
PID 2020 wrote to memory of 1632	2020	Payment_Advice.exe	Payment_Advice.exe
PID 2020 wrote to memory of 1632	2020	Payment_Advice.exe	Payment_Advice.exe
PID 2020 wrote to memory of 1632	2020	Payment_Advice.exe	Payment_Advice.exe
PID 1200 wrote to memory of 1564	1200	Explorer.EXE	raserver.exe
PID 1200 wrote to memory of 1564	1200	Explorer.EXE	raserver.exe
PID 1200 wrote to memory of 1564	1200	Explorer.EXE	raserver.exe
PID 1200 wrote to memory of 1564	1200	Explorer.EXE	raserver.exe
PID 1564 wrote to memory of 2040	1564	raserver.exe	cmd.exe
PID 1564 wrote to memory of 2040	1564	raserver.exe	cmd.exe
PID 1564 wrote to memory of 2040	1564	raserver.exe	cmd.exe
PID 1564 wrote to memory of 2040	1564	raserver.exe	cmd.exe
PID 1564 wrote to memory of 1560	1564	raserver.exe	Firefox.exe
PID 1564 wrote to memory of 1560	1564	raserver.exe	Firefox.exe
PID 1564 wrote to memory of 1560	1564	raserver.exe	Firefox.exe
PID 1564 wrote to memory of 1560	1564	raserver.exe	Firefox.exe
PID 1564 wrote to memory of 1560	1564	raserver.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:1200

C:\Users\Admin\AppData\Local\Temp\Payment_Advice.exe
"C:\Users\Admin\AppData\Local\Temp\Payment_Advice.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2020

C:\Users\Admin\AppData\Local\Temp\Payment_Advice.exe
"{path}"
3⤵
PID:2012

C:\Users\Admin\AppData\Local\Temp\Payment_Advice.exe
"{path}"
3⤵
PID:1320

C:\Users\Admin\AppData\Local\Temp\Payment_Advice.exe
"{path}"
3⤵
PID:944

C:\Users\Admin\AppData\Local\Temp\Payment_Advice.exe
"{path}"
3⤵
PID:1548

C:\Users\Admin\AppData\Local\Temp\Payment_Advice.exe
"{path}"
3⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:1632

C:\Windows\SysWOW64\raserver.exe
"C:\Windows\SysWOW64\raserver.exe"
2⤵
- 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:1564

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\Payment_Advice.exe"
3⤵
- Deletes itself
PID:2040

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:1560

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

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/1200-68-0x0000000004AA0000-0x0000000004B9A000-memory.dmp

Filesize
1000KB

Download
memory/1200-78-0x0000000004C20000-0x0000000004D4B000-memory.dmp

Filesize
1.2MB

Download
memory/1200-76-0x0000000004C20000-0x0000000004D4B000-memory.dmp

Filesize
1.2MB

Download
memory/1564-77-0x0000000000080000-0x00000000000AC000-memory.dmp

Filesize
176KB

Download
memory/1564-75-0x0000000000960000-0x00000000009F0000-memory.dmp

Filesize
576KB

Download
memory/1564-74-0x0000000000AE0000-0x0000000000DE3000-memory.dmp

Filesize
3.0MB

Download
memory/1564-73-0x0000000000080000-0x00000000000AC000-memory.dmp

Filesize
176KB

Download
memory/1564-72-0x0000000000EA0000-0x0000000000EBC000-memory.dmp

Filesize
112KB

Download
memory/1564-69-0x0000000000000000-mapping.dmp

Download
memory/1632-59-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1632-66-0x0000000000930000-0x0000000000C33000-memory.dmp

Filesize
3.0MB

Download
memory/1632-67-0x0000000000270000-0x0000000000281000-memory.dmp

Filesize
68KB

Download
memory/1632-65-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1632-63-0x000000000041F6F0-mapping.dmp

Download
memory/1632-62-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1632-60-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/2020-54-0x0000000000020000-0x0000000000104000-memory.dmp

Filesize
912KB

Download
memory/2020-58-0x0000000004410000-0x0000000004442000-memory.dmp

Filesize
200KB

Download
memory/2020-57-0x0000000004D20000-0x0000000004DA0000-memory.dmp

Filesize
512KB

Download
memory/2020-56-0x0000000000960000-0x000000000096A000-memory.dmp

Filesize
40KB

Download
memory/2020-55-0x0000000075BF1000-0x0000000075BF3000-memory.dmp

Filesize
8KB

Download
memory/2040-71-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

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Downloads