xloader | cc57daf94d2c4f0df02f52776881ca4ca73c5175484bc3b63ab7c661a6625878

General

Target

VQC612aN8kkRJe9.exe
Size

578KB
MD5

2424734321f03e8048202f10ba707c29
SHA1

e085ae7d3b35f036ebf49076869203a29d9db3c0
SHA256

72fd8d816c54cacc80a7364d61fccfb6f4c2b9a88ed0cb9296e038b615731cfb
SHA512

1208d8b231775575cfc360a16fe0d93bbe888253377ac350091d249b9041272f66bd32476c2db9931e4bd34e238a1bc656ad03fffc0480a1cb365ebd705a5b7d

Score

10^/10

xloader zzun loader rat suricata

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

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/1936-62-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral1/memory/1936-63-0x000000000041F6F0-mapping.dmp	xloader
behavioral1/memory/1936-69-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral1/memory/2040-72-0x0000000000080000-0x00000000000AC000-memory.dmp	xloader
behavioral1/memory/2040-76-0x0000000000080000-0x00000000000AC000-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:

VQC612aN8kkRJe9.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3762437355-3468409815-1164039494-1000\Control Panel\International\Geo\Nation	VQC612aN8kkRJe9.exe

Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

1020 cmd.exe

pid	process
1020	cmd.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

VQC612aN8kkRJe9.exeVQC612aN8kkRJe9.exewlanext.exe

description	pid	process	target process
PID 968 set thread context of 1936	968	VQC612aN8kkRJe9.exe	VQC612aN8kkRJe9.exe
PID 1936 set thread context of 1212	1936	VQC612aN8kkRJe9.exe	Explorer.EXE
PID 2040 set thread context of 1212	2040	wlanext.exe	Explorer.EXE

Suspicious behavior: EnumeratesProcesses 22 IoCs

Processes:

VQC612aN8kkRJe9.exewlanext.exe

pid	process
1936	VQC612aN8kkRJe9.exe
1936	VQC612aN8kkRJe9.exe
2040	wlanext.exe
2040	wlanext.exe
2040	wlanext.exe
2040	wlanext.exe
2040	wlanext.exe
2040	wlanext.exe
2040	wlanext.exe
2040	wlanext.exe
2040	wlanext.exe
2040	wlanext.exe
2040	wlanext.exe
2040	wlanext.exe
2040	wlanext.exe
2040	wlanext.exe
2040	wlanext.exe
2040	wlanext.exe
2040	wlanext.exe
2040	wlanext.exe
2040	wlanext.exe
2040	wlanext.exe

Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

VQC612aN8kkRJe9.exewlanext.exe

pid process

1936 VQC612aN8kkRJe9.exe
1936 VQC612aN8kkRJe9.exe
1936 VQC612aN8kkRJe9.exe
2040 wlanext.exe
2040 wlanext.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

VQC612aN8kkRJe9.exewlanext.exe

description pid process

Token: SeDebugPrivilege 1936 VQC612aN8kkRJe9.exe
Token: SeDebugPrivilege 2040 wlanext.exe
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

Explorer.EXE

pid process

1212 Explorer.EXE
1212 Explorer.EXE
Suspicious use of SendNotifyMessage 2 IoCs

Processes:

Explorer.EXE

pid process

1212 Explorer.EXE
1212 Explorer.EXE

description	pid	process
Token: SeDebugPrivilege	1936	VQC612aN8kkRJe9.exe
Token: SeDebugPrivilege	2040	wlanext.exe

pid	process
1212	Explorer.EXE
1212	Explorer.EXE

pid	process
1212	Explorer.EXE
1212	Explorer.EXE

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

VQC612aN8kkRJe9.exeExplorer.EXEwlanext.exe

description	pid	process	target process
PID 968 wrote to memory of 1936	968	VQC612aN8kkRJe9.exe	VQC612aN8kkRJe9.exe
PID 968 wrote to memory of 1936	968	VQC612aN8kkRJe9.exe	VQC612aN8kkRJe9.exe
PID 968 wrote to memory of 1936	968	VQC612aN8kkRJe9.exe	VQC612aN8kkRJe9.exe
PID 968 wrote to memory of 1936	968	VQC612aN8kkRJe9.exe	VQC612aN8kkRJe9.exe
PID 968 wrote to memory of 1936	968	VQC612aN8kkRJe9.exe	VQC612aN8kkRJe9.exe
PID 968 wrote to memory of 1936	968	VQC612aN8kkRJe9.exe	VQC612aN8kkRJe9.exe
PID 968 wrote to memory of 1936	968	VQC612aN8kkRJe9.exe	VQC612aN8kkRJe9.exe
PID 1212 wrote to memory of 2040	1212	Explorer.EXE	wlanext.exe
PID 1212 wrote to memory of 2040	1212	Explorer.EXE	wlanext.exe
PID 1212 wrote to memory of 2040	1212	Explorer.EXE	wlanext.exe
PID 1212 wrote to memory of 2040	1212	Explorer.EXE	wlanext.exe
PID 2040 wrote to memory of 1020	2040	wlanext.exe	cmd.exe
PID 2040 wrote to memory of 1020	2040	wlanext.exe	cmd.exe
PID 2040 wrote to memory of 1020	2040	wlanext.exe	cmd.exe
PID 2040 wrote to memory of 1020	2040	wlanext.exe	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1212

C:\Users\Admin\AppData\Local\Temp\VQC612aN8kkRJe9.exe
"C:\Users\Admin\AppData\Local\Temp\VQC612aN8kkRJe9.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:968

C:\Users\Admin\AppData\Local\Temp\VQC612aN8kkRJe9.exe
"{path}"
3⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:1936

C:\Windows\SysWOW64\wlanext.exe
"C:\Windows\SysWOW64\wlanext.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2040

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\VQC612aN8kkRJe9.exe"
3⤵
- Deletes itself
PID:1020

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

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/968-54-0x0000000000BF0000-0x0000000000C86000-memory.dmp

Filesize
600KB

Download
memory/968-55-0x00000000762D1000-0x00000000762D3000-memory.dmp

Filesize
8KB

Download
memory/968-56-0x0000000000270000-0x000000000027A000-memory.dmp

Filesize
40KB

Download
memory/968-57-0x0000000002270000-0x00000000022F4000-memory.dmp

Filesize
528KB

Download
memory/968-58-0x00000000009A0000-0x00000000009D2000-memory.dmp

Filesize
200KB

Download
memory/1020-70-0x0000000000000000-mapping.dmp

Download
memory/1212-77-0x00000000071D0000-0x0000000007348000-memory.dmp

Filesize
1.5MB

Download
memory/1212-75-0x00000000071D0000-0x0000000007348000-memory.dmp

Filesize
1.5MB

Download
memory/1212-67-0x0000000006340000-0x0000000006480000-memory.dmp

Filesize
1.2MB

Download
memory/1936-66-0x0000000000170000-0x0000000000181000-memory.dmp

Filesize
68KB

Download
memory/1936-65-0x0000000000C90000-0x0000000000F93000-memory.dmp

Filesize
3.0MB

Download
memory/1936-63-0x000000000041F6F0-mapping.dmp

Download
memory/1936-69-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1936-62-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1936-60-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1936-59-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/2040-68-0x0000000000000000-mapping.dmp

Download
memory/2040-71-0x0000000000270000-0x0000000000286000-memory.dmp

Filesize
88KB

Download
memory/2040-72-0x0000000000080000-0x00000000000AC000-memory.dmp

Filesize
176KB

Download
memory/2040-73-0x0000000001E90000-0x0000000002193000-memory.dmp

Filesize
3.0MB

Download
memory/2040-74-0x0000000001DD0000-0x0000000001E60000-memory.dmp

Filesize
576KB

Download
memory/2040-76-0x0000000000080000-0x00000000000AC000-memory.dmp

Filesize
176KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

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Downloads