xloader | 7b943e48f8b28d881955fb753c00bcdf83150950dee3de8be4f60809e51772c0

Resubmissions

07-07-2022 06:21

220707-g4dccseddn 10

Analysis

max time kernel
146s
max time network
149s
platform
windows10_x64
resource
win10-20220414-en
submitted
07-07-2022 06:21

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General

Target

r.exe
Size

176KB
MD5

a750e7ca3c96e229159290610f050f44
SHA1

c826d272c2d37bbed58f565d26e23aedbc8e77bd
SHA256

7b943e48f8b28d881955fb753c00bcdf83150950dee3de8be4f60809e51772c0
SHA512

c850c6e8fbfbcf48aa6ef415e3dd3754570e3b8af84c59456f6da265680cc7f50bf674a598d9ac00ff91cf9e02644f6d635cd3e4a14faeabdefc89cf7557224e

Score

10^/10

xloader m02u loader persistence rat spyware stealer suricata

Malware Config

Extracted

Family

xloader

Version

2.8

Campaign

m02u

Decoy

ydiKt35xO4uyQFO0NRJJlna9sfNouA==

GjkDEaamJbEEvq8=

FDr3ENQpG/4mLGX6GJQ=

d5q027I2g9f7FGX6GJQ=

q7BGV+E+rkR4orc=

3HqIhCqKvyGAVqSE

NNQTbYBtzLdbeqoWXWaY1g==

5wOrGx0GnkTm9zSJ3A==

POFlw72pMYIowsY9wojDD+V1sfNouA==

rkCg8evPDStR9AGhzVLf

3OLDCO9RWLFeXJIbXWaY1g==

H0EbZUmmk62btLg=

XfrsK8smEDXDdw==

EIqEbCQVnIgqPIJHgkuJ1A==

r16zzKQ6z5+2SIXjNv2CDOB06w==

LDi4upLfsXeqqt1xnu77UiPK

gRxETepbVnFagqE=

6xCyu4F3M5xLJbZI1A==

iYBBZDGayR9Fnes6ww==

eCVOagMOybk=

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
suricata: ET MALWARE FormBook CnC Checkin (POST) M2
suricata: ET MALWARE FormBook CnC Checkin (POST) M2
suricata

Xloader Payload 4 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/4064-187-0x0000000000EB0000-0x0000000000EDC000-memory.dmp	xloader
behavioral1/memory/4064-193-0x0000000000EB0000-0x0000000000EDC000-memory.dmp	xloader
C:\Program Files (x86)\X8p8t0x\tx4txth05jlhpxxp.exe	xloader
C:\Program Files (x86)\X8p8t0x\tx4txth05jlhpxxp.exe	xloader

Adds policy Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

colorcpl.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	colorcpl.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\-DFDQB = "C:\\Program Files (x86)\\X8p8t0x\\tx4txth05jlhpxxp.exe"	colorcpl.exe

Executes dropped EXE 1 IoCs

Processes:

tx4txth05jlhpxxp.exe

pid process

4008 tx4txth05jlhpxxp.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:

r.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-1804997378-2045782378-3882459628-1000\Control Panel\International\Geo\Nation r.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
4008	tx4txth05jlhpxxp.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1804997378-2045782378-3882459628-1000\Control Panel\International\Geo\Nation	r.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

r.execolorcpl.exe

description	pid	process	target process
PID 2692 set thread context of 1760	2692	r.exe	Explorer.EXE
PID 4064 set thread context of 1760	4064	colorcpl.exe	Explorer.EXE

Drops file in Program Files directory 4 IoCs

Processes:

colorcpl.exeExplorer.EXE

description	ioc	process
File opened for modification	C:\Program Files (x86)\X8p8t0x\tx4txth05jlhpxxp.exe	colorcpl.exe
File opened for modification	C:\Program Files (x86)\X8p8t0x	Explorer.EXE
File created	C:\Program Files (x86)\X8p8t0x\tx4txth05jlhpxxp.exe	Explorer.EXE
File opened for modification	C:\Program Files (x86)\X8p8t0x\tx4txth05jlhpxxp.exe	Explorer.EXE

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

colorcpl.exe

description	ioc	process
Key created	\Registry\User\S-1-5-21-1804997378-2045782378-3882459628-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	colorcpl.exe

Suspicious behavior: EnumeratesProcesses 54 IoCs

Processes:

r.execolorcpl.exetx4txth05jlhpxxp.exe

pid	process
2692	r.exe
2692	r.exe
2692	r.exe
2692	r.exe
4064	colorcpl.exe
4064	colorcpl.exe
4064	colorcpl.exe
4064	colorcpl.exe
4064	colorcpl.exe
4064	colorcpl.exe
4064	colorcpl.exe
4064	colorcpl.exe
4064	colorcpl.exe
4064	colorcpl.exe
4064	colorcpl.exe
4064	colorcpl.exe
4064	colorcpl.exe
4064	colorcpl.exe
4064	colorcpl.exe
4064	colorcpl.exe
4064	colorcpl.exe
4064	colorcpl.exe
4064	colorcpl.exe
4064	colorcpl.exe
4064	colorcpl.exe
4064	colorcpl.exe
4064	colorcpl.exe
4064	colorcpl.exe
4064	colorcpl.exe
4064	colorcpl.exe
4064	colorcpl.exe
4064	colorcpl.exe
4064	colorcpl.exe
4064	colorcpl.exe
4064	colorcpl.exe
4064	colorcpl.exe
4064	colorcpl.exe
4064	colorcpl.exe
4064	colorcpl.exe
4064	colorcpl.exe
4064	colorcpl.exe
4064	colorcpl.exe
4064	colorcpl.exe
4064	colorcpl.exe
4064	colorcpl.exe
4064	colorcpl.exe
4064	colorcpl.exe
4064	colorcpl.exe
4008	tx4txth05jlhpxxp.exe
4008	tx4txth05jlhpxxp.exe
4064	colorcpl.exe
4064	colorcpl.exe
4064	colorcpl.exe
4064	colorcpl.exe

Suspicious behavior: MapViewOfSection 7 IoCs

Processes:

r.execolorcpl.exe

pid process

2692 r.exe
2692 r.exe
2692 r.exe
4064 colorcpl.exe
4064 colorcpl.exe
4064 colorcpl.exe
4064 colorcpl.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

r.execolorcpl.exetx4txth05jlhpxxp.exe

description pid process

Token: SeDebugPrivilege 2692 r.exe
Token: SeDebugPrivilege 4064 colorcpl.exe
Token: SeDebugPrivilege 4008 tx4txth05jlhpxxp.exe

description	pid	process
Token: SeDebugPrivilege	2692	r.exe
Token: SeDebugPrivilege	4064	colorcpl.exe
Token: SeDebugPrivilege	4008	tx4txth05jlhpxxp.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

Explorer.EXEcolorcpl.exe

description	pid	process	target process
PID 1760 wrote to memory of 4064	1760	Explorer.EXE	colorcpl.exe
PID 1760 wrote to memory of 4064	1760	Explorer.EXE	colorcpl.exe
PID 1760 wrote to memory of 4064	1760	Explorer.EXE	colorcpl.exe
PID 4064 wrote to memory of 1908	4064	colorcpl.exe	cmd.exe
PID 4064 wrote to memory of 1908	4064	colorcpl.exe	cmd.exe
PID 4064 wrote to memory of 1908	4064	colorcpl.exe	cmd.exe
PID 4064 wrote to memory of 324	4064	colorcpl.exe	cmd.exe
PID 4064 wrote to memory of 324	4064	colorcpl.exe	cmd.exe
PID 4064 wrote to memory of 324	4064	colorcpl.exe	cmd.exe
PID 4064 wrote to memory of 1076	4064	colorcpl.exe	Firefox.exe
PID 4064 wrote to memory of 1076	4064	colorcpl.exe	Firefox.exe
PID 4064 wrote to memory of 1076	4064	colorcpl.exe	Firefox.exe
PID 1760 wrote to memory of 4008	1760	Explorer.EXE	tx4txth05jlhpxxp.exe
PID 1760 wrote to memory of 4008	1760	Explorer.EXE	tx4txth05jlhpxxp.exe
PID 1760 wrote to memory of 4008	1760	Explorer.EXE	tx4txth05jlhpxxp.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:1760

C:\Users\Admin\AppData\Local\Temp\r.exe
"C:\Users\Admin\AppData\Local\Temp\r.exe"
2⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:2692

C:\Windows\SysWOW64\colorcpl.exe
"C:\Windows\SysWOW64\colorcpl.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:4064

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\r.exe"
3⤵
PID:1908

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:324

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:1076

C:\Program Files (x86)\X8p8t0x\tx4txth05jlhpxxp.exe
"C:\Program Files (x86)\X8p8t0x\tx4txth05jlhpxxp.exe"
2⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4008

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

Replay Monitor

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Downloads

C:\Program Files (x86)\X8p8t0x\tx4txth05jlhpxxp.exe
Filesize
176KB

MD5
a750e7ca3c96e229159290610f050f44

SHA1
c826d272c2d37bbed58f565d26e23aedbc8e77bd

SHA256
7b943e48f8b28d881955fb753c00bcdf83150950dee3de8be4f60809e51772c0

SHA512
c850c6e8fbfbcf48aa6ef415e3dd3754570e3b8af84c59456f6da265680cc7f50bf674a598d9ac00ff91cf9e02644f6d635cd3e4a14faeabdefc89cf7557224e

Download Submit
C:\Program Files (x86)\X8p8t0x\tx4txth05jlhpxxp.exe
Filesize
176KB

MD5
a750e7ca3c96e229159290610f050f44

SHA1
c826d272c2d37bbed58f565d26e23aedbc8e77bd

SHA256
7b943e48f8b28d881955fb753c00bcdf83150950dee3de8be4f60809e51772c0

SHA512
c850c6e8fbfbcf48aa6ef415e3dd3754570e3b8af84c59456f6da265680cc7f50bf674a598d9ac00ff91cf9e02644f6d635cd3e4a14faeabdefc89cf7557224e

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

MD5
b608d407fc15adea97c26936bc6f03f6

SHA1
953e7420801c76393902c0d6bb56148947e41571

SHA256
b281ce54125d4250a80f48fcc02a8eea53f2c35c3b726e2512c3d493da0013bf

SHA512
cc96ddf4bf90d6aaa9d86803cb2aa30cd8e9b295aee1bd5544b88aeab63dc60bb1d4641e846c9771bab51aabbfbcd984c6d3ee83b96f5b65d09c0841d464b9e4

Download Submit
memory/324-216-0x0000000000000000-mapping.dmp

Download
memory/1760-194-0x00000000029F0000-0x0000000002A89000-memory.dmp

Filesize
612KB

Download
memory/1760-196-0x00000000029F0000-0x0000000002A89000-memory.dmp

Filesize
612KB

Download
memory/1760-142-0x0000000000B50000-0x0000000000C4C000-memory.dmp

Filesize
1008KB

Download
memory/1760-190-0x0000000000B50000-0x0000000000C4C000-memory.dmp

Filesize
1008KB

Download
memory/1908-189-0x0000000077360000-0x00000000774EE000-memory.dmp

Filesize
1.6MB

Download
memory/1908-184-0x0000000077360000-0x00000000774EE000-memory.dmp

Filesize
1.6MB

Download
memory/1908-185-0x0000000077360000-0x00000000774EE000-memory.dmp

Filesize
1.6MB

Download
memory/1908-183-0x0000000077360000-0x00000000774EE000-memory.dmp

Filesize
1.6MB

Download
memory/1908-182-0x0000000077360000-0x00000000774EE000-memory.dmp

Filesize
1.6MB

Download
memory/1908-181-0x0000000000000000-mapping.dmp

Download
memory/2692-139-0x0000000077360000-0x00000000774EE000-memory.dmp

Filesize
1.6MB

Download
memory/2692-120-0x0000000077360000-0x00000000774EE000-memory.dmp

Filesize
1.6MB

Download
memory/2692-134-0x0000000077360000-0x00000000774EE000-memory.dmp

Filesize
1.6MB

Download
memory/2692-135-0x0000000077360000-0x00000000774EE000-memory.dmp

Filesize
1.6MB

Download
memory/2692-136-0x0000000077360000-0x00000000774EE000-memory.dmp

Filesize
1.6MB

Download
memory/2692-137-0x0000000077360000-0x00000000774EE000-memory.dmp

Filesize
1.6MB

Download
memory/2692-138-0x0000000077360000-0x00000000774EE000-memory.dmp

Filesize
1.6MB

Download
memory/2692-118-0x0000000077360000-0x00000000774EE000-memory.dmp

Filesize
1.6MB

Download
memory/2692-140-0x0000000077360000-0x00000000774EE000-memory.dmp

Filesize
1.6MB

Download
memory/2692-141-0x0000000077360000-0x00000000774EE000-memory.dmp

Filesize
1.6MB

Download
memory/2692-132-0x0000000077360000-0x00000000774EE000-memory.dmp

Filesize
1.6MB

Download
memory/2692-130-0x0000000077360000-0x00000000774EE000-memory.dmp

Filesize
1.6MB

Download
memory/2692-119-0x0000000077360000-0x00000000774EE000-memory.dmp

Filesize
1.6MB

Download
memory/2692-131-0x0000000077360000-0x00000000774EE000-memory.dmp

Filesize
1.6MB

Download
memory/2692-128-0x0000000000D50000-0x0000000001070000-memory.dmp

Filesize
3.1MB

Download
memory/2692-121-0x0000000077360000-0x00000000774EE000-memory.dmp

Filesize
1.6MB

Download
memory/2692-122-0x0000000077360000-0x00000000774EE000-memory.dmp

Filesize
1.6MB

Download
memory/2692-123-0x0000000077360000-0x00000000774EE000-memory.dmp

Filesize
1.6MB

Download
memory/2692-133-0x0000000000CF0000-0x0000000000D01000-memory.dmp

Filesize
68KB

Download
memory/2692-124-0x0000000077360000-0x00000000774EE000-memory.dmp

Filesize
1.6MB

Download
memory/2692-125-0x0000000077360000-0x00000000774EE000-memory.dmp

Filesize
1.6MB

Download
memory/2692-126-0x0000000077360000-0x00000000774EE000-memory.dmp

Filesize
1.6MB

Download
memory/2692-127-0x0000000077360000-0x00000000774EE000-memory.dmp

Filesize
1.6MB

Download
memory/2692-129-0x0000000077360000-0x00000000774EE000-memory.dmp

Filesize
1.6MB

Download
memory/4008-234-0x0000000000000000-mapping.dmp

Download
memory/4008-251-0x0000000000C90000-0x0000000000FB0000-memory.dmp

Filesize
3.1MB

Download
memory/4064-150-0x0000000077360000-0x00000000774EE000-memory.dmp

Filesize
1.6MB

Download
memory/4064-179-0x0000000077360000-0x00000000774EE000-memory.dmp

Filesize
1.6MB

Download
memory/4064-160-0x0000000077360000-0x00000000774EE000-memory.dmp

Filesize
1.6MB

Download
memory/4064-161-0x0000000077360000-0x00000000774EE000-memory.dmp

Filesize
1.6MB

Download
memory/4064-162-0x0000000077360000-0x00000000774EE000-memory.dmp

Filesize
1.6MB

Download
memory/4064-163-0x0000000077360000-0x00000000774EE000-memory.dmp

Filesize
1.6MB

Download
memory/4064-164-0x0000000077360000-0x00000000774EE000-memory.dmp

Filesize
1.6MB

Download
memory/4064-165-0x0000000077360000-0x00000000774EE000-memory.dmp

Filesize
1.6MB

Download
memory/4064-166-0x0000000077360000-0x00000000774EE000-memory.dmp

Filesize
1.6MB

Download
memory/4064-167-0x0000000077360000-0x00000000774EE000-memory.dmp

Filesize
1.6MB

Download
memory/4064-168-0x0000000077360000-0x00000000774EE000-memory.dmp

Filesize
1.6MB

Download
memory/4064-169-0x0000000077360000-0x00000000774EE000-memory.dmp

Filesize
1.6MB

Download
memory/4064-170-0x0000000077360000-0x00000000774EE000-memory.dmp

Filesize
1.6MB

Download
memory/4064-171-0x0000000077360000-0x00000000774EE000-memory.dmp

Filesize
1.6MB

Download
memory/4064-172-0x0000000077360000-0x00000000774EE000-memory.dmp

Filesize
1.6MB

Download
memory/4064-173-0x0000000077360000-0x00000000774EE000-memory.dmp

Filesize
1.6MB

Download
memory/4064-175-0x0000000077360000-0x00000000774EE000-memory.dmp

Filesize
1.6MB

Download
memory/4064-174-0x0000000077360000-0x00000000774EE000-memory.dmp

Filesize
1.6MB

Download
memory/4064-176-0x0000000077360000-0x00000000774EE000-memory.dmp

Filesize
1.6MB

Download
memory/4064-177-0x0000000077360000-0x00000000774EE000-memory.dmp

Filesize
1.6MB

Download
memory/4064-178-0x0000000077360000-0x00000000774EE000-memory.dmp

Filesize
1.6MB

Download
memory/4064-159-0x0000000077360000-0x00000000774EE000-memory.dmp

Filesize
1.6MB

Download
memory/4064-180-0x0000000077360000-0x00000000774EE000-memory.dmp

Filesize
1.6MB

Download
memory/4064-158-0x0000000077360000-0x00000000774EE000-memory.dmp

Filesize
1.6MB

Download
memory/4064-157-0x0000000077360000-0x00000000774EE000-memory.dmp

Filesize
1.6MB

Download
memory/4064-156-0x0000000077360000-0x00000000774EE000-memory.dmp

Filesize
1.6MB

Download
memory/4064-155-0x0000000077360000-0x00000000774EE000-memory.dmp

Filesize
1.6MB

Download
memory/4064-154-0x0000000077360000-0x00000000774EE000-memory.dmp

Filesize
1.6MB

Download
memory/4064-186-0x0000000001170000-0x0000000001189000-memory.dmp

Filesize
100KB

Download
memory/4064-187-0x0000000000EB0000-0x0000000000EDC000-memory.dmp

Filesize
176KB

Download
memory/4064-188-0x0000000004E50000-0x0000000005170000-memory.dmp

Filesize
3.1MB

Download
memory/4064-153-0x0000000077360000-0x00000000774EE000-memory.dmp

Filesize
1.6MB

Download
memory/4064-152-0x0000000077360000-0x00000000774EE000-memory.dmp

Filesize
1.6MB

Download
memory/4064-192-0x0000000004B10000-0x0000000004CAA000-memory.dmp

Filesize
1.6MB

Download
memory/4064-193-0x0000000000EB0000-0x0000000000EDC000-memory.dmp

Filesize
176KB

Download
memory/4064-151-0x0000000077360000-0x00000000774EE000-memory.dmp

Filesize
1.6MB

Download
memory/4064-195-0x0000000004B10000-0x0000000004CAA000-memory.dmp

Filesize
1.6MB

Download
memory/4064-149-0x0000000077360000-0x00000000774EE000-memory.dmp

Filesize
1.6MB

Download
memory/4064-148-0x0000000077360000-0x00000000774EE000-memory.dmp

Filesize
1.6MB

Download
memory/4064-147-0x0000000077360000-0x00000000774EE000-memory.dmp

Filesize
1.6MB

Download
memory/4064-146-0x0000000077360000-0x00000000774EE000-memory.dmp

Filesize
1.6MB

Download
memory/4064-145-0x0000000077360000-0x00000000774EE000-memory.dmp

Filesize
1.6MB

Download
memory/4064-144-0x0000000077360000-0x00000000774EE000-memory.dmp

Filesize
1.6MB

Download
memory/4064-143-0x0000000000000000-mapping.dmp

Download