xloader | b87ec1a86d0c11e1183ec3de93241427e393f0016ff662fe6c9d98af2faf22d5

General

Target

Invoice B9800177.exe
Size

628KB
MD5

36efa9e34b8055b9e54572997f85099a
SHA1

ceeb08b5411a56c0fc98388bc427b9aa563d8967
SHA256

b87ec1a86d0c11e1183ec3de93241427e393f0016ff662fe6c9d98af2faf22d5
SHA512

e4bbdaad01e7da77457af0420e9f777f59ec08cebc728b6396696317c69329d6c5a385b584abd642f92138324838e9df347b8f61f346aad9583eac115f1a2413

Score

10^/10

xloader loader persistence rat suricata

Malware Config

Signatures

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/948-63-0x0000000000400000-0x000000000042D000-memory.dmp	xloader
behavioral1/memory/948-64-0x00000000004202C0-mapping.dmp	xloader
behavioral1/memory/948-66-0x0000000000400000-0x000000000042D000-memory.dmp	xloader
behavioral1/memory/1420-73-0x00000000000E0000-0x000000000010D000-memory.dmp	xloader
behavioral1/memory/1420-77-0x00000000000E0000-0x000000000010D000-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:

Invoice B9800177.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Control Panel\International\Geo\Nation	Invoice B9800177.exe

Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

696 cmd.exe

pid	process
696	cmd.exe

Adds 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\Wow6432Node\Microsoft\Windows\CurrentVersion\Run	wlanext.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\8PTXHFWXGV = "C:\\Program Files (x86)\\J-zftcn\\config9rql.exe"	wlanext.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

Invoice B9800177.exeInvoice B9800177.exewlanext.exe

description	pid	process	target process
PID 1684 set thread context of 948	1684	Invoice B9800177.exe	Invoice B9800177.exe
PID 948 set thread context of 1264	948	Invoice B9800177.exe	Explorer.EXE
PID 1420 set thread context of 1264	1420	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)\J-zftcn\config9rql.exe wlanext.exe

description	ioc	process
File opened for modification	C:\Program Files (x86)\J-zftcn\config9rql.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-1-5-21-2277218442-1199762539-2004043321-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	wlanext.exe

Suspicious behavior: EnumeratesProcesses 15 IoCs

Processes:

Invoice B9800177.exewlanext.exe

pid	process
948	Invoice B9800177.exe
948	Invoice B9800177.exe
1420	wlanext.exe
1420	wlanext.exe
1420	wlanext.exe
1420	wlanext.exe
1420	wlanext.exe
1420	wlanext.exe
1420	wlanext.exe
1420	wlanext.exe
1420	wlanext.exe
1420	wlanext.exe
1420	wlanext.exe
1420	wlanext.exe
1420	wlanext.exe

Suspicious behavior: MapViewOfSection 7 IoCs

Processes:

Invoice B9800177.exewlanext.exe

pid process

948 Invoice B9800177.exe
948 Invoice B9800177.exe
948 Invoice B9800177.exe
1420 wlanext.exe
1420 wlanext.exe
1420 wlanext.exe
1420 wlanext.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

Invoice B9800177.exewlanext.exe

description pid process

Token: SeDebugPrivilege 948 Invoice B9800177.exe
Token: SeDebugPrivilege 1420 wlanext.exe
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

Explorer.EXE

pid process

1264 Explorer.EXE
1264 Explorer.EXE
Suspicious use of SendNotifyMessage 2 IoCs

Processes:

Explorer.EXE

pid process

1264 Explorer.EXE
1264 Explorer.EXE

description	pid	process
Token: SeDebugPrivilege	948	Invoice B9800177.exe
Token: SeDebugPrivilege	1420	wlanext.exe

pid	process
1264	Explorer.EXE
1264	Explorer.EXE

pid	process
1264	Explorer.EXE
1264	Explorer.EXE

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

Invoice B9800177.exeExplorer.EXEwlanext.exe

description	pid	process	target process
PID 1684 wrote to memory of 948	1684	Invoice B9800177.exe	Invoice B9800177.exe
PID 1684 wrote to memory of 948	1684	Invoice B9800177.exe	Invoice B9800177.exe
PID 1684 wrote to memory of 948	1684	Invoice B9800177.exe	Invoice B9800177.exe
PID 1684 wrote to memory of 948	1684	Invoice B9800177.exe	Invoice B9800177.exe
PID 1684 wrote to memory of 948	1684	Invoice B9800177.exe	Invoice B9800177.exe
PID 1684 wrote to memory of 948	1684	Invoice B9800177.exe	Invoice B9800177.exe
PID 1684 wrote to memory of 948	1684	Invoice B9800177.exe	Invoice B9800177.exe
PID 1264 wrote to memory of 1420	1264	Explorer.EXE	wlanext.exe
PID 1264 wrote to memory of 1420	1264	Explorer.EXE	wlanext.exe
PID 1264 wrote to memory of 1420	1264	Explorer.EXE	wlanext.exe
PID 1264 wrote to memory of 1420	1264	Explorer.EXE	wlanext.exe
PID 1420 wrote to memory of 696	1420	wlanext.exe	cmd.exe
PID 1420 wrote to memory of 696	1420	wlanext.exe	cmd.exe
PID 1420 wrote to memory of 696	1420	wlanext.exe	cmd.exe
PID 1420 wrote to memory of 696	1420	wlanext.exe	cmd.exe
PID 1420 wrote to memory of 1988	1420	wlanext.exe	Firefox.exe
PID 1420 wrote to memory of 1988	1420	wlanext.exe	Firefox.exe
PID 1420 wrote to memory of 1988	1420	wlanext.exe	Firefox.exe
PID 1420 wrote to memory of 1988	1420	wlanext.exe	Firefox.exe
PID 1420 wrote to memory of 1988	1420	wlanext.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:1264

C:\Users\Admin\AppData\Local\Temp\Invoice B9800177.exe
"C:\Users\Admin\AppData\Local\Temp\Invoice B9800177.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1684

C:\Users\Admin\AppData\Local\Temp\Invoice B9800177.exe
"C:\Users\Admin\AppData\Local\Temp\Invoice B9800177.exe"
3⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:948

C:\Windows\SysWOW64\wlanext.exe
"C:\Windows\SysWOW64\wlanext.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:1420

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\Invoice B9800177.exe"
3⤵
- Deletes itself
PID:696

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:1988

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/696-71-0x0000000000000000-mapping.dmp

Download
memory/948-66-0x0000000000400000-0x000000000042D000-memory.dmp

Filesize
180KB

Download
memory/948-68-0x0000000000270000-0x0000000000281000-memory.dmp

Filesize
68KB

Download
memory/948-67-0x00000000009E0000-0x0000000000CE3000-memory.dmp

Filesize
3.0MB

Download
memory/948-60-0x0000000000400000-0x000000000042D000-memory.dmp

Filesize
180KB

Download
memory/948-61-0x0000000000400000-0x000000000042D000-memory.dmp

Filesize
180KB

Download
memory/948-63-0x0000000000400000-0x000000000042D000-memory.dmp

Filesize
180KB

Download
memory/948-64-0x00000000004202C0-mapping.dmp

Download
memory/1264-78-0x00000000068F0000-0x0000000006A69000-memory.dmp

Filesize
1.5MB

Download
memory/1264-76-0x00000000068F0000-0x0000000006A69000-memory.dmp

Filesize
1.5MB

Download
memory/1264-69-0x0000000004D40000-0x0000000004DFA000-memory.dmp

Filesize
744KB

Download
memory/1420-73-0x00000000000E0000-0x000000000010D000-memory.dmp

Filesize
180KB

Download
memory/1420-70-0x0000000000000000-mapping.dmp

Download
memory/1420-72-0x00000000003C0000-0x00000000003D6000-memory.dmp

Filesize
88KB

Download
memory/1420-74-0x0000000001ED0000-0x00000000021D3000-memory.dmp

Filesize
3.0MB

Download
memory/1420-75-0x0000000001D70000-0x0000000001E00000-memory.dmp

Filesize
576KB

Download
memory/1420-77-0x00000000000E0000-0x000000000010D000-memory.dmp

Filesize
180KB

Download
memory/1684-57-0x0000000000280000-0x000000000028E000-memory.dmp

Filesize
56KB

Download
memory/1684-54-0x0000000000290000-0x0000000000334000-memory.dmp

Filesize
656KB

Download
memory/1684-55-0x0000000075761000-0x0000000075763000-memory.dmp

Filesize
8KB

Download
memory/1684-56-0x00000000003E0000-0x0000000000400000-memory.dmp

Filesize
128KB

Download
memory/1684-59-0x00000000020F0000-0x0000000002122000-memory.dmp

Filesize
200KB

Download
memory/1684-58-0x0000000005F50000-0x0000000005FCA000-memory.dmp

Filesize
488KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads