formbook | 2cb0fced8684685300e21600dba5c4e821c53c44310872eaba68c96ab25ff65c

General

Target

Hsbc_Payment_Advice.exe
Size

50KB
MD5

788e3b6fdfaf584dbb45f6cc2a2b734d
SHA1

9344e2c0f7133252f25bc4aa1bc517186296b4e6
SHA256

2cb0fced8684685300e21600dba5c4e821c53c44310872eaba68c96ab25ff65c
SHA512

3e50ee54bc46e3968cddac89102ea7e342390dadab4a65eb31c0cf4acdcb75f3e7df768e62b34becc342206c51a2359db882818e43de6e5cbb0052b016c25e77

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 6 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/1232-64-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral1/memory/1232-65-0x000000000041F6F0-mapping.dmp	xloader
behavioral1/memory/1232-70-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral1/memory/1232-74-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral1/memory/972-78-0x0000000000130000-0x000000000015C000-memory.dmp	xloader
behavioral1/memory/972-81-0x0000000000130000-0x000000000015C000-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:

wlanext.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	wlanext.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\J8TPYFN8OVE = "C:\\Program Files (x86)\\Vpbc\\mfcnndt.exe"	wlanext.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

Hsbc_Payment_Advice.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\Pujfnwrhe = "\"C:\\Users\\Admin\\AppData\\Roaming\\Yzbkhwzjy\\Pujfnwrhe.exe\""	Hsbc_Payment_Advice.exe

Suspicious use of SetThreadContext 4 IoCs

Processes:

Hsbc_Payment_Advice.exeInstallUtil.exewlanext.exe

description	pid	process	target process
PID 1096 set thread context of 1232	1096	Hsbc_Payment_Advice.exe	InstallUtil.exe
PID 1232 set thread context of 1276	1232	InstallUtil.exe	Explorer.EXE
PID 1232 set thread context of 1276	1232	InstallUtil.exe	Explorer.EXE
PID 972 set thread context of 1276	972	wlanext.exe	Explorer.EXE

Drops file in Program Files directory 1 IoCs

Processes:

wlanext.exe

description ioc process

File opened for modification C:\Program Files (x86)\Vpbc\mfcnndt.exe wlanext.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

description	ioc	process
File opened for modification	C:\Program Files (x86)\Vpbc\mfcnndt.exe	wlanext.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

wlanext.exe

description	ioc	process
Key created	\Registry\User\S-1-5-21-2292972927-2705560509-2768824231-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	wlanext.exe

Suspicious behavior: EnumeratesProcesses 23 IoCs

Processes:

powershell.exeInstallUtil.exewlanext.exe

pid	process
1344	powershell.exe
1232	InstallUtil.exe
1232	InstallUtil.exe
1232	InstallUtil.exe
972	wlanext.exe
972	wlanext.exe
972	wlanext.exe
972	wlanext.exe
972	wlanext.exe
972	wlanext.exe
972	wlanext.exe
972	wlanext.exe
972	wlanext.exe
972	wlanext.exe
972	wlanext.exe
972	wlanext.exe
972	wlanext.exe
972	wlanext.exe
972	wlanext.exe
972	wlanext.exe
972	wlanext.exe
972	wlanext.exe
972	wlanext.exe

Suspicious behavior: MapViewOfSection 8 IoCs

Processes:

InstallUtil.exewlanext.exe

pid process

1232 InstallUtil.exe
1232 InstallUtil.exe
1232 InstallUtil.exe
1232 InstallUtil.exe
972 wlanext.exe
972 wlanext.exe
972 wlanext.exe
972 wlanext.exe

pid	process
1232	InstallUtil.exe
1232	InstallUtil.exe
1232	InstallUtil.exe
1232	InstallUtil.exe
972	wlanext.exe
972	wlanext.exe
972	wlanext.exe
972	wlanext.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

Hsbc_Payment_Advice.exepowershell.exeInstallUtil.exewlanext.exe

description	pid	process
Token: SeDebugPrivilege	1096	Hsbc_Payment_Advice.exe
Token: SeDebugPrivilege	1344	powershell.exe
Token: SeDebugPrivilege	1232	InstallUtil.exe
Token: SeDebugPrivilege	972	wlanext.exe

Suspicious use of WriteProcessMemory 27 IoCs

Processes:

Hsbc_Payment_Advice.exeExplorer.EXEwlanext.exe

description	pid	process	target process
PID 1096 wrote to memory of 1344	1096	Hsbc_Payment_Advice.exe	powershell.exe
PID 1096 wrote to memory of 1344	1096	Hsbc_Payment_Advice.exe	powershell.exe
PID 1096 wrote to memory of 1344	1096	Hsbc_Payment_Advice.exe	powershell.exe
PID 1096 wrote to memory of 1344	1096	Hsbc_Payment_Advice.exe	powershell.exe
PID 1096 wrote to memory of 1232	1096	Hsbc_Payment_Advice.exe	InstallUtil.exe
PID 1096 wrote to memory of 1232	1096	Hsbc_Payment_Advice.exe	InstallUtil.exe
PID 1096 wrote to memory of 1232	1096	Hsbc_Payment_Advice.exe	InstallUtil.exe
PID 1096 wrote to memory of 1232	1096	Hsbc_Payment_Advice.exe	InstallUtil.exe
PID 1096 wrote to memory of 1232	1096	Hsbc_Payment_Advice.exe	InstallUtil.exe
PID 1096 wrote to memory of 1232	1096	Hsbc_Payment_Advice.exe	InstallUtil.exe
PID 1096 wrote to memory of 1232	1096	Hsbc_Payment_Advice.exe	InstallUtil.exe
PID 1096 wrote to memory of 1232	1096	Hsbc_Payment_Advice.exe	InstallUtil.exe
PID 1096 wrote to memory of 1232	1096	Hsbc_Payment_Advice.exe	InstallUtil.exe
PID 1096 wrote to memory of 1232	1096	Hsbc_Payment_Advice.exe	InstallUtil.exe
PID 1276 wrote to memory of 972	1276	Explorer.EXE	wlanext.exe
PID 1276 wrote to memory of 972	1276	Explorer.EXE	wlanext.exe
PID 1276 wrote to memory of 972	1276	Explorer.EXE	wlanext.exe
PID 1276 wrote to memory of 972	1276	Explorer.EXE	wlanext.exe
PID 972 wrote to memory of 560	972	wlanext.exe	cmd.exe
PID 972 wrote to memory of 560	972	wlanext.exe	cmd.exe
PID 972 wrote to memory of 560	972	wlanext.exe	cmd.exe
PID 972 wrote to memory of 560	972	wlanext.exe	cmd.exe
PID 972 wrote to memory of 1076	972	wlanext.exe	Firefox.exe
PID 972 wrote to memory of 1076	972	wlanext.exe	Firefox.exe
PID 972 wrote to memory of 1076	972	wlanext.exe	Firefox.exe
PID 972 wrote to memory of 1076	972	wlanext.exe	Firefox.exe
PID 972 wrote to memory of 1076	972	wlanext.exe	Firefox.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1276

C:\Users\Admin\AppData\Local\Temp\Hsbc_Payment_Advice.exe
"C:\Users\Admin\AppData\Local\Temp\Hsbc_Payment_Advice.exe"
2⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1096

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc UwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBTAGUAYwBvAG4AZABzACAANwA=
3⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1344

C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:1232

C:\Windows\SysWOW64\wlanext.exe
"C:\Windows\SysWOW64\wlanext.exe"
2⤵
- 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:972

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe"
3⤵
PID:560

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:1076

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

2

T1060

Privilege Escalation

Defense Evasion

Modify Registry

3

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

memory/560-75-0x0000000000000000-mapping.dmp

Download
memory/972-73-0x0000000000000000-mapping.dmp

Download
memory/972-81-0x0000000000130000-0x000000000015C000-memory.dmp

Filesize
176KB

Download
memory/972-79-0x0000000000720000-0x00000000007B0000-memory.dmp

Filesize
576KB

Download
memory/972-78-0x0000000000130000-0x000000000015C000-memory.dmp

Filesize
176KB

Download
memory/972-77-0x0000000001EF0000-0x00000000021F3000-memory.dmp

Filesize
3.0MB

Download
memory/972-76-0x00000000007B0000-0x00000000007C6000-memory.dmp

Filesize
88KB

Download
memory/1096-55-0x0000000075211000-0x0000000075213000-memory.dmp

Filesize
8KB

Download
memory/1096-56-0x0000000006080000-0x000000000624A000-memory.dmp

Filesize
1.8MB

Download
memory/1096-54-0x0000000000A50000-0x0000000000A62000-memory.dmp

Filesize
72KB

Download
memory/1232-61-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1232-74-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1232-62-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1232-70-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1232-71-0x00000000002E0000-0x00000000002F1000-memory.dmp

Filesize
68KB

Download
memory/1232-64-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1232-67-0x0000000000980000-0x0000000000C83000-memory.dmp

Filesize
3.0MB

Download
memory/1232-68-0x0000000000190000-0x00000000001A1000-memory.dmp

Filesize
68KB

Download
memory/1232-65-0x000000000041F6F0-mapping.dmp

Download
memory/1276-72-0x0000000007460000-0x0000000007596000-memory.dmp

Filesize
1.2MB

Download
memory/1276-69-0x0000000006B90000-0x0000000006C52000-memory.dmp

Filesize
776KB

Download
memory/1276-80-0x0000000007710000-0x000000000786D000-memory.dmp

Filesize
1.4MB

Download
memory/1276-82-0x0000000007710000-0x000000000786D000-memory.dmp

Filesize
1.4MB

Download
memory/1344-60-0x000000006E780000-0x000000006ED2B000-memory.dmp

Filesize
5.7MB

Download
memory/1344-59-0x000000006E780000-0x000000006ED2B000-memory.dmp

Filesize
5.7MB

Download
memory/1344-57-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads