xloader | a7c1f4ae5c35b88e68b4d82db4c7e14d53922946d853569b5efd5050e7480229

Analysis

max time kernel
162s
max time network
166s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
02-09-2022 03:27

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General

Target

46.exe
Size

180KB
MD5

8ae4b54233e81b57019d4b5a99bd8c2a
SHA1

26fd130c30a1d71e45c75938c0f2c6d30b8a1536
SHA256

f690ffee38ecd975fe66819463977ed1189c660c1a72db4cb8b6a957ea72fb6b
SHA512

3445faa35303e0d790d24085da79edd8760efb2345bb000b6f3481f2219df1cc2f201fb00bfc3a4d3e490ecd0b5f527f2f00339ff42e07393fd8fa3a48603887
SSDEEP

3072:3zUFGeFw82qbnsBWD4rF6aA/lY4RRSR5NClaYA5jmluZOsr1IW:YFG6ZVbnsDrFTAG4RRYCla/RrHI

Score

10^/10

xloader loader persistence rat spyware stealer

Malware Config

Signatures

Xloader
Xloader is a rebranded version of Formbook malware.
loader xloader

Xloader payload 4 IoCs

rat

Processes:

resource	yara_rule
behavioral14/memory/2356-137-0x0000000000790000-0x00000000007BD000-memory.dmp	xloader
behavioral14/memory/2356-140-0x0000000000790000-0x00000000007BD000-memory.dmp	xloader
C:\Program Files (x86)\K9rd0ftb\fbcxv4j0rz24anbp.exe	xloader
C:\Program Files (x86)\K9rd0ftb\fbcxv4j0rz24anbp.exe	xloader

Adds policy Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

raserver.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	raserver.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\GPG40VMXCPNX = "C:\\Program Files (x86)\\K9rd0ftb\\fbcxv4j0rz24anbp.exe"	raserver.exe

Executes dropped EXE 1 IoCs

Processes:

fbcxv4j0rz24anbp.exe

pid process

2988 fbcxv4j0rz24anbp.exe
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:

46.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation 46.exe
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081

pid	process
2988	fbcxv4j0rz24anbp.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation	46.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

46.exeraserver.exe

description	pid	process	target process
PID 3956 set thread context of 760	3956	46.exe	Explorer.EXE
PID 2356 set thread context of 760	2356	raserver.exe	Explorer.EXE

Drops file in Program Files directory 4 IoCs

Processes:

Explorer.EXEraserver.exe

description	ioc	process
File created	C:\Program Files (x86)\K9rd0ftb\fbcxv4j0rz24anbp.exe	Explorer.EXE
File opened for modification	C:\Program Files (x86)\K9rd0ftb\fbcxv4j0rz24anbp.exe	Explorer.EXE
File opened for modification	C:\Program Files (x86)\K9rd0ftb\fbcxv4j0rz24anbp.exe	raserver.exe
File opened for modification	C:\Program Files (x86)\K9rd0ftb	Explorer.EXE

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

raserver.exe

description	ioc	process
Key created	\Registry\User\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	raserver.exe

Suspicious behavior: EnumeratesProcesses 56 IoCs

Processes:

46.exeraserver.exefbcxv4j0rz24anbp.exe

pid	process
3956	46.exe
3956	46.exe
3956	46.exe
3956	46.exe
2356	raserver.exe
2356	raserver.exe
2356	raserver.exe
2356	raserver.exe
2356	raserver.exe
2356	raserver.exe
2356	raserver.exe
2356	raserver.exe
2356	raserver.exe
2356	raserver.exe
2356	raserver.exe
2356	raserver.exe
2356	raserver.exe
2356	raserver.exe
2356	raserver.exe
2356	raserver.exe
2356	raserver.exe
2356	raserver.exe
2356	raserver.exe
2356	raserver.exe
2356	raserver.exe
2356	raserver.exe
2356	raserver.exe
2356	raserver.exe
2356	raserver.exe
2356	raserver.exe
2356	raserver.exe
2356	raserver.exe
2356	raserver.exe
2356	raserver.exe
2356	raserver.exe
2356	raserver.exe
2356	raserver.exe
2356	raserver.exe
2356	raserver.exe
2356	raserver.exe
2356	raserver.exe
2356	raserver.exe
2988	fbcxv4j0rz24anbp.exe
2988	fbcxv4j0rz24anbp.exe
2356	raserver.exe
2356	raserver.exe
2356	raserver.exe
2356	raserver.exe
2356	raserver.exe
2356	raserver.exe
2356	raserver.exe
2356	raserver.exe
2356	raserver.exe
2356	raserver.exe
2356	raserver.exe
2356	raserver.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

760 Explorer.EXE
Suspicious behavior: MapViewOfSection 7 IoCs

Processes:

46.exeraserver.exe

pid process

3956 46.exe
3956 46.exe
3956 46.exe
2356 raserver.exe
2356 raserver.exe
2356 raserver.exe
2356 raserver.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

46.exeraserver.exefbcxv4j0rz24anbp.exe

description pid process

Token: SeDebugPrivilege 3956 46.exe
Token: SeDebugPrivilege 2356 raserver.exe
Token: SeDebugPrivilege 2988 fbcxv4j0rz24anbp.exe

pid	process
760	Explorer.EXE

description	pid	process
Token: SeDebugPrivilege	3956	46.exe
Token: SeDebugPrivilege	2356	raserver.exe
Token: SeDebugPrivilege	2988	fbcxv4j0rz24anbp.exe

Suspicious use of WriteProcessMemory 18 IoCs

Processes:

Explorer.EXEraserver.exe

description	pid	process	target process
PID 760 wrote to memory of 2356	760	Explorer.EXE	raserver.exe
PID 760 wrote to memory of 2356	760	Explorer.EXE	raserver.exe
PID 760 wrote to memory of 2356	760	Explorer.EXE	raserver.exe
PID 2356 wrote to memory of 4472	2356	raserver.exe	cmd.exe
PID 2356 wrote to memory of 4472	2356	raserver.exe	cmd.exe
PID 2356 wrote to memory of 4472	2356	raserver.exe	cmd.exe
PID 2356 wrote to memory of 1792	2356	raserver.exe	cmd.exe
PID 2356 wrote to memory of 1792	2356	raserver.exe	cmd.exe
PID 2356 wrote to memory of 1792	2356	raserver.exe	cmd.exe
PID 2356 wrote to memory of 3728	2356	raserver.exe	cmd.exe
PID 2356 wrote to memory of 3728	2356	raserver.exe	cmd.exe
PID 2356 wrote to memory of 3728	2356	raserver.exe	cmd.exe
PID 2356 wrote to memory of 3184	2356	raserver.exe	Firefox.exe
PID 2356 wrote to memory of 3184	2356	raserver.exe	Firefox.exe
PID 2356 wrote to memory of 3184	2356	raserver.exe	Firefox.exe
PID 760 wrote to memory of 2988	760	Explorer.EXE	fbcxv4j0rz24anbp.exe
PID 760 wrote to memory of 2988	760	Explorer.EXE	fbcxv4j0rz24anbp.exe
PID 760 wrote to memory of 2988	760	Explorer.EXE	fbcxv4j0rz24anbp.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Drops file in Program Files directory
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:760

C:\Users\Admin\AppData\Local\Temp\46.exe
"C:\Users\Admin\AppData\Local\Temp\46.exe"
2⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:3956

C:\Windows\SysWOW64\raserver.exe
"C:\Windows\SysWOW64\raserver.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:2356

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\46.exe"
3⤵
PID:4472

C:\Windows\SysWOW64\cmd.exe
/c copy "C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Login Data" "C:\Users\Admin\AppData\Local\Temp\DB1" /V
3⤵
PID:1792

C:\Windows\SysWOW64\cmd.exe
/c copy "C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Login Data" "C:\Users\Admin\AppData\Local\Temp\DB1" /V
3⤵
PID:3728

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:3184

C:\Program Files (x86)\K9rd0ftb\fbcxv4j0rz24anbp.exe
"C:\Program Files (x86)\K9rd0ftb\fbcxv4j0rz24anbp.exe"
2⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2988

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Credentials in Files

T1081

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Exfiltration

Command and Control

Impact

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Downloads

C:\Program Files (x86)\K9rd0ftb\fbcxv4j0rz24anbp.exe
Filesize
180KB

MD5
8ae4b54233e81b57019d4b5a99bd8c2a

SHA1
26fd130c30a1d71e45c75938c0f2c6d30b8a1536

SHA256
f690ffee38ecd975fe66819463977ed1189c660c1a72db4cb8b6a957ea72fb6b

SHA512
3445faa35303e0d790d24085da79edd8760efb2345bb000b6f3481f2219df1cc2f201fb00bfc3a4d3e490ecd0b5f527f2f00339ff42e07393fd8fa3a48603887

Download Submit
C:\Program Files (x86)\K9rd0ftb\fbcxv4j0rz24anbp.exe
Filesize
180KB

MD5
8ae4b54233e81b57019d4b5a99bd8c2a

SHA1
26fd130c30a1d71e45c75938c0f2c6d30b8a1536

SHA256
f690ffee38ecd975fe66819463977ed1189c660c1a72db4cb8b6a957ea72fb6b

SHA512
3445faa35303e0d790d24085da79edd8760efb2345bb000b6f3481f2219df1cc2f201fb00bfc3a4d3e490ecd0b5f527f2f00339ff42e07393fd8fa3a48603887

Download Submit
C:\Users\Admin\AppData\Local\Temp\DB1
Filesize
40KB

MD5
b608d407fc15adea97c26936bc6f03f6

SHA1
953e7420801c76393902c0d6bb56148947e41571

SHA256
b281ce54125d4250a80f48fcc02a8eea53f2c35c3b726e2512c3d493da0013bf

SHA512
cc96ddf4bf90d6aaa9d86803cb2aa30cd8e9b295aee1bd5544b88aeab63dc60bb1d4641e846c9771bab51aabbfbcd984c6d3ee83b96f5b65d09c0841d464b9e4

Download Submit
C:\Users\Admin\AppData\Local\Temp\DB1
Filesize
48KB

MD5
349e6eb110e34a08924d92f6b334801d

SHA1
bdfb289daff51890cc71697b6322aa4b35ec9169

SHA256
c9fd7be4579e4aa942e8c2b44ab10115fa6c2fe6afd0c584865413d9d53f3b2a

SHA512
2a635b815a5e117ea181ee79305ee1baf591459427acc5210d8c6c7e447be3513ead871c605eb3d32e4ab4111b2a335f26520d0ef8c1245a4af44e1faec44574

Download Submit
memory/760-142-0x0000000008300000-0x00000000083EE000-memory.dmp

Filesize
952KB

Download
memory/760-143-0x0000000008300000-0x00000000083EE000-memory.dmp

Filesize
952KB

Download
memory/760-134-0x0000000008190000-0x00000000082FD000-memory.dmp

Filesize
1.4MB

Download
memory/1792-144-0x0000000000000000-mapping.dmp

Download
memory/2356-141-0x00000000026B0000-0x0000000002740000-memory.dmp

Filesize
576KB

Download
memory/2356-137-0x0000000000790000-0x00000000007BD000-memory.dmp

Filesize
180KB

Download
memory/2356-140-0x0000000000790000-0x00000000007BD000-memory.dmp

Filesize
180KB

Download
memory/2356-139-0x0000000002880000-0x0000000002BCA000-memory.dmp

Filesize
3.3MB

Download
memory/2356-136-0x00000000005C0000-0x00000000005DF000-memory.dmp

Filesize
124KB

Download
memory/2356-135-0x0000000000000000-mapping.dmp

Download
memory/2988-148-0x0000000000000000-mapping.dmp

Download
memory/2988-151-0x0000000000B40000-0x0000000000E8A000-memory.dmp

Filesize
3.3MB

Download
memory/2988-152-0x0000000000B40000-0x0000000000E8A000-memory.dmp

Filesize
3.3MB

Download
memory/3728-146-0x0000000000000000-mapping.dmp

Download
memory/3956-132-0x0000000000BF0000-0x0000000000F3A000-memory.dmp

Filesize
3.3MB

Download
memory/3956-133-0x0000000000BB0000-0x0000000000BC1000-memory.dmp

Filesize
68KB

Download
memory/4472-138-0x0000000000000000-mapping.dmp

Download