xloader | fdd377a939cebf1d0d77f6e5ad11bc09170ed283f51b79811478d45b3dfcda10

General

Target

SWIFT002.exe
Size

638KB
MD5

2de0fb573005cb158a0356fae71c25dd
SHA1

089887a506669a5739751b9a38f3fa134e3f0ff9
SHA256

fdd377a939cebf1d0d77f6e5ad11bc09170ed283f51b79811478d45b3dfcda10
SHA512

11b5a6233e9578ca571abb299bdda001d3e800463add0c2c2b7f26215bda158ac061db39891ba6b1a406e91f5dbdec5bdc3d515c9bd460569fff1cd139f50592

Score

10^/10

xloader zzun loader persistence rat

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

Xloader payload 5 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/1176-62-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral1/memory/1176-63-0x000000000041F6F0-mapping.dmp	xloader
behavioral1/memory/1176-65-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral1/memory/1716-73-0x0000000000080000-0x00000000000AC000-memory.dmp	xloader
behavioral1/memory/1716-78-0x0000000000080000-0x00000000000AC000-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:

SWIFT002.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3440072777-2118400376-1759599358-1000\Control Panel\International\Geo\Nation	SWIFT002.exe

Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

1876 cmd.exe

pid	process
1876	cmd.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

msdt.exe

description	ioc	process
Key created	\Registry\Machine\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run	msdt.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\KV1LBV_H12 = "C:\\Program Files (x86)\\H-z4pdxf\\configvbfl0b.exe"	msdt.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

SWIFT002.exeSWIFT002.exemsdt.exe

description	pid	process	target process
PID 1420 set thread context of 1176	1420	SWIFT002.exe	SWIFT002.exe
PID 1176 set thread context of 1376	1176	SWIFT002.exe	Explorer.EXE
PID 1716 set thread context of 1376	1716	msdt.exe	Explorer.EXE

Drops file in Program Files directory 1 IoCs

Processes:

msdt.exe

description ioc process

File opened for modification C:\Program Files (x86)\H-z4pdxf\configvbfl0b.exe msdt.exe

description	ioc	process
File opened for modification	C:\Program Files (x86)\H-z4pdxf\configvbfl0b.exe	msdt.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

msdt.exe

description	ioc	process
Key created	\Registry\User\S-1-5-21-3440072777-2118400376-1759599358-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	msdt.exe

Suspicious behavior: EnumeratesProcesses 22 IoCs

Processes:

SWIFT002.exeSWIFT002.exemsdt.exe

pid	process
1420	SWIFT002.exe
1176	SWIFT002.exe
1176	SWIFT002.exe
1716	msdt.exe
1716	msdt.exe
1716	msdt.exe
1716	msdt.exe
1716	msdt.exe
1716	msdt.exe
1716	msdt.exe
1716	msdt.exe
1716	msdt.exe
1716	msdt.exe
1716	msdt.exe
1716	msdt.exe
1716	msdt.exe
1716	msdt.exe
1716	msdt.exe
1716	msdt.exe
1716	msdt.exe
1716	msdt.exe
1716	msdt.exe

Suspicious behavior: MapViewOfSection 7 IoCs

Processes:

SWIFT002.exemsdt.exe

pid process

1176 SWIFT002.exe
1176 SWIFT002.exe
1176 SWIFT002.exe
1716 msdt.exe
1716 msdt.exe
1716 msdt.exe
1716 msdt.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

SWIFT002.exeSWIFT002.exemsdt.exe

description pid process

Token: SeDebugPrivilege 1420 SWIFT002.exe
Token: SeDebugPrivilege 1176 SWIFT002.exe
Token: SeDebugPrivilege 1716 msdt.exe
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

Explorer.EXE

pid process

1376 Explorer.EXE
1376 Explorer.EXE
Suspicious use of SendNotifyMessage 2 IoCs

Processes:

Explorer.EXE

pid process

1376 Explorer.EXE
1376 Explorer.EXE

pid	process
1176	SWIFT002.exe
1176	SWIFT002.exe
1176	SWIFT002.exe
1716	msdt.exe
1716	msdt.exe
1716	msdt.exe
1716	msdt.exe

description	pid	process
Token: SeDebugPrivilege	1420	SWIFT002.exe
Token: SeDebugPrivilege	1176	SWIFT002.exe
Token: SeDebugPrivilege	1716	msdt.exe

pid	process
1376	Explorer.EXE
1376	Explorer.EXE

pid	process
1376	Explorer.EXE
1376	Explorer.EXE

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

SWIFT002.exeExplorer.EXEmsdt.exe

description	pid	process	target process
PID 1420 wrote to memory of 1176	1420	SWIFT002.exe	SWIFT002.exe
PID 1420 wrote to memory of 1176	1420	SWIFT002.exe	SWIFT002.exe
PID 1420 wrote to memory of 1176	1420	SWIFT002.exe	SWIFT002.exe
PID 1420 wrote to memory of 1176	1420	SWIFT002.exe	SWIFT002.exe
PID 1420 wrote to memory of 1176	1420	SWIFT002.exe	SWIFT002.exe
PID 1420 wrote to memory of 1176	1420	SWIFT002.exe	SWIFT002.exe
PID 1420 wrote to memory of 1176	1420	SWIFT002.exe	SWIFT002.exe
PID 1376 wrote to memory of 1716	1376	Explorer.EXE	msdt.exe
PID 1376 wrote to memory of 1716	1376	Explorer.EXE	msdt.exe
PID 1376 wrote to memory of 1716	1376	Explorer.EXE	msdt.exe
PID 1376 wrote to memory of 1716	1376	Explorer.EXE	msdt.exe
PID 1716 wrote to memory of 1876	1716	msdt.exe	cmd.exe
PID 1716 wrote to memory of 1876	1716	msdt.exe	cmd.exe
PID 1716 wrote to memory of 1876	1716	msdt.exe	cmd.exe
PID 1716 wrote to memory of 1876	1716	msdt.exe	cmd.exe
PID 1716 wrote to memory of 1524	1716	msdt.exe	Firefox.exe
PID 1716 wrote to memory of 1524	1716	msdt.exe	Firefox.exe
PID 1716 wrote to memory of 1524	1716	msdt.exe	Firefox.exe
PID 1716 wrote to memory of 1524	1716	msdt.exe	Firefox.exe
PID 1716 wrote to memory of 1524	1716	msdt.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:1376

C:\Users\Admin\AppData\Local\Temp\SWIFT002.exe
"C:\Users\Admin\AppData\Local\Temp\SWIFT002.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1420

C:\Users\Admin\AppData\Local\Temp\SWIFT002.exe
"{path}"
3⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:1176

C:\Windows\SysWOW64\autochk.exe
"C:\Windows\SysWOW64\autochk.exe"
2⤵
PID:1076

C:\Windows\SysWOW64\autochk.exe
"C:\Windows\SysWOW64\autochk.exe"
2⤵
PID:2032

C:\Windows\SysWOW64\autochk.exe
"C:\Windows\SysWOW64\autochk.exe"
2⤵
PID:1300

C:\Windows\SysWOW64\autochk.exe
"C:\Windows\SysWOW64\autochk.exe"
2⤵
PID:2020

C:\Windows\SysWOW64\autochk.exe
"C:\Windows\SysWOW64\autochk.exe"
2⤵
PID:984

C:\Windows\SysWOW64\autochk.exe
"C:\Windows\SysWOW64\autochk.exe"
2⤵
PID:980

C:\Windows\SysWOW64\autochk.exe
"C:\Windows\SysWOW64\autochk.exe"
2⤵
PID:1664

C:\Windows\SysWOW64\msdt.exe
"C:\Windows\SysWOW64\msdt.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:1716

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\SWIFT002.exe"
3⤵
- Deletes itself
PID:1876

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:1524

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

Loading Replay Monitor...

Downloads

memory/1176-66-0x0000000000A20000-0x0000000000D23000-memory.dmp

Filesize
3.0MB

Download
memory/1176-62-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1176-65-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1176-67-0x0000000000290000-0x00000000002A1000-memory.dmp

Filesize
68KB

Download
memory/1176-63-0x000000000041F6F0-mapping.dmp

Download
memory/1176-59-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1176-60-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1376-79-0x0000000003E80000-0x0000000003F3C000-memory.dmp

Filesize
752KB

Download
memory/1376-68-0x0000000004890000-0x000000000496E000-memory.dmp

Filesize
888KB

Download
memory/1376-77-0x0000000004890000-0x000000000496E000-memory.dmp

Filesize
888KB

Download
memory/1376-76-0x0000000003E80000-0x0000000003F3C000-memory.dmp

Filesize
752KB

Download
memory/1420-58-0x0000000000940000-0x0000000000972000-memory.dmp

Filesize
200KB

Download
memory/1420-57-0x0000000005B50000-0x0000000005BD4000-memory.dmp

Filesize
528KB

Download
memory/1420-56-0x0000000000390000-0x000000000039A000-memory.dmp

Filesize
40KB

Download
memory/1420-55-0x0000000075481000-0x0000000075483000-memory.dmp

Filesize
8KB

Download
memory/1420-54-0x0000000000970000-0x0000000000A16000-memory.dmp

Filesize
664KB

Download
memory/1716-74-0x0000000002170000-0x0000000002473000-memory.dmp

Filesize
3.0MB

Download
memory/1716-73-0x0000000000080000-0x00000000000AC000-memory.dmp

Filesize
176KB

Download
memory/1716-75-0x0000000002030000-0x00000000020C0000-memory.dmp

Filesize
576KB

Download
memory/1716-72-0x00000000005A0000-0x0000000000694000-memory.dmp

Filesize
976KB

Download
memory/1716-78-0x0000000000080000-0x00000000000AC000-memory.dmp

Filesize
176KB

Download
memory/1716-69-0x0000000000000000-mapping.dmp

Download
memory/1876-71-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

Loading Replay Monitor...

Downloads