xloader | b88777182ffbc0f28b68902a00f0b8a51b8dee4ef0104720a9ca92e18d920d81

General

Target

INVOICE xlsx.exe
Size

661KB
MD5

c3d9581dfe9bc99d5999828f4177b264
SHA1

42f526e8bcae0f3e6404e9bed89431cd6b5c9fa4
SHA256

b88777182ffbc0f28b68902a00f0b8a51b8dee4ef0104720a9ca92e18d920d81
SHA512

d0c71bbc6b363cda4f2e686eb40e8b3295e7f6a43d42aaeecc5a99a64a7960a5d2594733af336aca1dd1204d2abec3f9311ccbb4db53894c95c818bc21248671

Score

10^/10

xloader t20a loader persistence rat suricata

Malware Config

Extracted

Family

xloader

Version

2.6

Campaign

t20a

Decoy

ovewaci.com

explorebantentravel.com

productdesigninfo.com

harlis-kapitol.com

amishaentertainment.com

lauraheagy.com

sjg-central.xyz

amberdreamscattery.com

4848caomm2.com

a1brts.com

americareambulance.com

geekplusrobots.com

wiggitywack.com

baileyit.com

1dayshade.com

dergburo.com

aljeb.com

winnerisserved.com

safetyutilityeng.com

pchconsumerwinneralert.com

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/2000-63-0x0000000000400000-0x000000000042B000-memory.dmp	xloader
behavioral1/memory/2000-64-0x000000000041F290-mapping.dmp	xloader
behavioral1/memory/2000-66-0x0000000000400000-0x000000000042B000-memory.dmp	xloader
behavioral1/memory/1964-73-0x0000000000080000-0x00000000000AB000-memory.dmp	xloader
behavioral1/memory/1964-77-0x0000000000080000-0x00000000000AB000-memory.dmp	xloader

Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

528 cmd.exe

pid	process
528	cmd.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	process
Key created	\Registry\Machine\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run	svchost.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\MBG8PJ98AZ = "C:\\Program Files (x86)\\Oqzp\\mfcer4pdx_h.exe"	svchost.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

INVOICE xlsx.exeINVOICE xlsx.exesvchost.exe

description	pid	process	target process
PID 1740 set thread context of 2000	1740	INVOICE xlsx.exe	INVOICE xlsx.exe
PID 2000 set thread context of 1220	2000	INVOICE xlsx.exe	Explorer.EXE
PID 1964 set thread context of 1220	1964	svchost.exe	Explorer.EXE

Drops file in Program Files directory 1 IoCs

Processes:

svchost.exe

description ioc process

File opened for modification C:\Program Files (x86)\Oqzp\mfcer4pdx_h.exe svchost.exe

description	ioc	process
File opened for modification	C:\Program Files (x86)\Oqzp\mfcer4pdx_h.exe	svchost.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	process
Key created	\Registry\User\S-1-5-21-2277218442-1199762539-2004043321-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	svchost.exe

Suspicious behavior: EnumeratesProcesses 15 IoCs

Processes:

INVOICE xlsx.exesvchost.exe

pid	process
2000	INVOICE xlsx.exe
2000	INVOICE xlsx.exe
1964	svchost.exe
1964	svchost.exe
1964	svchost.exe
1964	svchost.exe
1964	svchost.exe
1964	svchost.exe
1964	svchost.exe
1964	svchost.exe
1964	svchost.exe
1964	svchost.exe
1964	svchost.exe
1964	svchost.exe
1964	svchost.exe

Suspicious behavior: MapViewOfSection 6 IoCs

Processes:

INVOICE xlsx.exesvchost.exe

pid process

2000 INVOICE xlsx.exe
2000 INVOICE xlsx.exe
2000 INVOICE xlsx.exe
1964 svchost.exe
1964 svchost.exe
1964 svchost.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

INVOICE xlsx.exesvchost.exe

description pid process

Token: SeDebugPrivilege 2000 INVOICE xlsx.exe
Token: SeDebugPrivilege 1964 svchost.exe
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

Explorer.EXE

pid process

1220 Explorer.EXE
1220 Explorer.EXE
Suspicious use of SendNotifyMessage 2 IoCs

Processes:

Explorer.EXE

pid process

1220 Explorer.EXE
1220 Explorer.EXE

description	pid	process
Token: SeDebugPrivilege	2000	INVOICE xlsx.exe
Token: SeDebugPrivilege	1964	svchost.exe

pid	process
1220	Explorer.EXE
1220	Explorer.EXE

pid	process
1220	Explorer.EXE
1220	Explorer.EXE

Suspicious use of WriteProcessMemory 19 IoCs

Processes:

INVOICE xlsx.exeExplorer.EXEsvchost.exe

description	pid	process	target process
PID 1740 wrote to memory of 2000	1740	INVOICE xlsx.exe	INVOICE xlsx.exe
PID 1740 wrote to memory of 2000	1740	INVOICE xlsx.exe	INVOICE xlsx.exe
PID 1740 wrote to memory of 2000	1740	INVOICE xlsx.exe	INVOICE xlsx.exe
PID 1740 wrote to memory of 2000	1740	INVOICE xlsx.exe	INVOICE xlsx.exe
PID 1740 wrote to memory of 2000	1740	INVOICE xlsx.exe	INVOICE xlsx.exe
PID 1740 wrote to memory of 2000	1740	INVOICE xlsx.exe	INVOICE xlsx.exe
PID 1740 wrote to memory of 2000	1740	INVOICE xlsx.exe	INVOICE xlsx.exe
PID 1220 wrote to memory of 1964	1220	Explorer.EXE	svchost.exe
PID 1220 wrote to memory of 1964	1220	Explorer.EXE	svchost.exe
PID 1220 wrote to memory of 1964	1220	Explorer.EXE	svchost.exe
PID 1220 wrote to memory of 1964	1220	Explorer.EXE	svchost.exe
PID 1964 wrote to memory of 528	1964	svchost.exe	cmd.exe
PID 1964 wrote to memory of 528	1964	svchost.exe	cmd.exe
PID 1964 wrote to memory of 528	1964	svchost.exe	cmd.exe
PID 1964 wrote to memory of 528	1964	svchost.exe	cmd.exe
PID 1964 wrote to memory of 1976	1964	svchost.exe	Firefox.exe
PID 1964 wrote to memory of 1976	1964	svchost.exe	Firefox.exe
PID 1964 wrote to memory of 1976	1964	svchost.exe	Firefox.exe
PID 1964 wrote to memory of 1976	1964	svchost.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:1220

C:\Users\Admin\AppData\Local\Temp\INVOICE xlsx.exe
"C:\Users\Admin\AppData\Local\Temp\INVOICE xlsx.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1740

C:\Users\Admin\AppData\Local\Temp\INVOICE xlsx.exe
"C:\Users\Admin\AppData\Local\Temp\INVOICE xlsx.exe"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:2000

C:\Windows\SysWOW64\svchost.exe
"C:\Windows\SysWOW64\svchost.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:1964

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\INVOICE xlsx.exe"
3⤵
- Deletes itself
PID:528

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:1976

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

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/528-71-0x0000000000000000-mapping.dmp

Download
memory/1220-69-0x0000000005F20000-0x0000000006006000-memory.dmp

Filesize
920KB

Download
memory/1220-78-0x0000000006150000-0x0000000006254000-memory.dmp

Filesize
1.0MB

Download
memory/1220-76-0x0000000006150000-0x0000000006254000-memory.dmp

Filesize
1.0MB

Download
memory/1740-59-0x0000000004FD0000-0x0000000005002000-memory.dmp

Filesize
200KB

Download
memory/1740-55-0x00000000761F1000-0x00000000761F3000-memory.dmp

Filesize
8KB

Download
memory/1740-56-0x0000000000420000-0x0000000000440000-memory.dmp

Filesize
128KB

Download
memory/1740-54-0x00000000011E0000-0x000000000128C000-memory.dmp

Filesize
688KB

Download
memory/1740-58-0x0000000005160000-0x00000000051DA000-memory.dmp

Filesize
488KB

Download
memory/1740-57-0x0000000004DE0000-0x0000000004DEE000-memory.dmp

Filesize
56KB

Download
memory/1964-72-0x0000000000F90000-0x0000000000F98000-memory.dmp

Filesize
32KB

Download
memory/1964-77-0x0000000000080000-0x00000000000AB000-memory.dmp

Filesize
172KB

Download
memory/1964-75-0x0000000000660000-0x00000000006F0000-memory.dmp

Filesize
576KB

Download
memory/1964-74-0x00000000007F0000-0x0000000000AF3000-memory.dmp

Filesize
3.0MB

Download
memory/1964-73-0x0000000000080000-0x00000000000AB000-memory.dmp

Filesize
172KB

Download
memory/1964-70-0x0000000000000000-mapping.dmp

Download
memory/2000-64-0x000000000041F290-mapping.dmp

Download
memory/2000-68-0x0000000000430000-0x0000000000441000-memory.dmp

Filesize
68KB

Download
memory/2000-67-0x0000000000700000-0x0000000000A03000-memory.dmp

Filesize
3.0MB

Download
memory/2000-66-0x0000000000400000-0x000000000042B000-memory.dmp

Filesize
172KB

Download
memory/2000-63-0x0000000000400000-0x000000000042B000-memory.dmp

Filesize
172KB

Download
memory/2000-61-0x0000000000400000-0x000000000042B000-memory.dmp

Filesize
172KB

Download
memory/2000-60-0x0000000000400000-0x000000000042B000-memory.dmp

Filesize
172KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

Loading Replay Monitor...

Downloads