xloader | 2cb0fced8684685300e21600dba5c4e821c53c44310872eaba68c96ab25ff65c

General

Target

Hsbc_Payment_Advice.exe
Size

50KB
MD5

788e3b6fdfaf584dbb45f6cc2a2b734d
SHA1

9344e2c0f7133252f25bc4aa1bc517186296b4e6
SHA256

2cb0fced8684685300e21600dba5c4e821c53c44310872eaba68c96ab25ff65c
SHA512

3e50ee54bc46e3968cddac89102ea7e342390dadab4a65eb31c0cf4acdcb75f3e7df768e62b34becc342206c51a2359db882818e43de6e5cbb0052b016c25e77

Score

10^/10

xloader zzun loader persistence rat spyware stealer

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
behavioral2/memory/4664-146-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral2/memory/4664-151-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral2/memory/4664-155-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral2/memory/3392-158-0x0000000000ED0000-0x0000000000EFC000-memory.dmp	xloader
behavioral2/memory/3392-162-0x0000000000ED0000-0x0000000000EFC000-memory.dmp	xloader

Executes dropped EXE 1 IoCs

Processes:

zlm4gzixjtudbngx.exe

pid process

2344 zlm4gzixjtudbngx.exe

pid	process
2344	zlm4gzixjtudbngx.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:

Hsbc_Payment_Advice.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1502147629-2175634256-330282290-1000\Control Panel\International\Geo\Nation	Hsbc_Payment_Advice.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

Adds Run key to start application 2 TTPs 3 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

Hsbc_Payment_Advice.execmstp.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1502147629-2175634256-330282290-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Pujfnwrhe = "\"C:\\Users\\Admin\\AppData\\Roaming\\Yzbkhwzjy\\Pujfnwrhe.exe\""	Hsbc_Payment_Advice.exe
Key created	\Registry\Machine\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run	cmstp.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\9RI04P-XCN = "C:\\Program Files (x86)\\Frdflx\\zlm4gzixjtudbngx.exe"	cmstp.exe

Suspicious use of SetThreadContext 4 IoCs

Processes:

Hsbc_Payment_Advice.exeInstallUtil.execmstp.exe

description	pid	process	target process
PID 4420 set thread context of 4664	4420	Hsbc_Payment_Advice.exe	InstallUtil.exe
PID 4664 set thread context of 8	4664	InstallUtil.exe	Explorer.EXE
PID 4664 set thread context of 8	4664	InstallUtil.exe	Explorer.EXE
PID 3392 set thread context of 8	3392	cmstp.exe	Explorer.EXE

Drops file in Program Files directory 4 IoCs

Processes:

cmstp.exeExplorer.EXE

description	ioc	process
File opened for modification	C:\Program Files (x86)\Frdflx\zlm4gzixjtudbngx.exe	cmstp.exe
File opened for modification	C:\Program Files (x86)\Frdflx	Explorer.EXE
File created	C:\Program Files (x86)\Frdflx\zlm4gzixjtudbngx.exe	Explorer.EXE
File opened for modification	C:\Program Files (x86)\Frdflx\zlm4gzixjtudbngx.exe	Explorer.EXE

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

cmstp.exe

description	ioc	process
Key created	\Registry\User\S-1-5-21-1502147629-2175634256-330282290-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	cmstp.exe

Suspicious behavior: EnumeratesProcesses 52 IoCs

Processes:

powershell.exeInstallUtil.execmstp.exe

pid	process
5112	powershell.exe
5112	powershell.exe
4664	InstallUtil.exe
4664	InstallUtil.exe
4664	InstallUtil.exe
4664	InstallUtil.exe
4664	InstallUtil.exe
4664	InstallUtil.exe
3392	cmstp.exe
3392	cmstp.exe
3392	cmstp.exe
3392	cmstp.exe
3392	cmstp.exe
3392	cmstp.exe
3392	cmstp.exe
3392	cmstp.exe
3392	cmstp.exe
3392	cmstp.exe
3392	cmstp.exe
3392	cmstp.exe
3392	cmstp.exe
3392	cmstp.exe
3392	cmstp.exe
3392	cmstp.exe
3392	cmstp.exe
3392	cmstp.exe
3392	cmstp.exe
3392	cmstp.exe
3392	cmstp.exe
3392	cmstp.exe
3392	cmstp.exe
3392	cmstp.exe
3392	cmstp.exe
3392	cmstp.exe
3392	cmstp.exe
3392	cmstp.exe
3392	cmstp.exe
3392	cmstp.exe
3392	cmstp.exe
3392	cmstp.exe
3392	cmstp.exe
3392	cmstp.exe
3392	cmstp.exe
3392	cmstp.exe
3392	cmstp.exe
3392	cmstp.exe
3392	cmstp.exe
3392	cmstp.exe
3392	cmstp.exe
3392	cmstp.exe
3392	cmstp.exe
3392	cmstp.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

8 Explorer.EXE
Suspicious behavior: MapViewOfSection 8 IoCs

Processes:

InstallUtil.execmstp.exe

pid process

4664 InstallUtil.exe
4664 InstallUtil.exe
4664 InstallUtil.exe
4664 InstallUtil.exe
3392 cmstp.exe
3392 cmstp.exe
3392 cmstp.exe
3392 cmstp.exe

pid	process
8	Explorer.EXE

pid	process
4664	InstallUtil.exe
4664	InstallUtil.exe
4664	InstallUtil.exe
4664	InstallUtil.exe
3392	cmstp.exe
3392	cmstp.exe
3392	cmstp.exe
3392	cmstp.exe

Suspicious use of AdjustPrivilegeToken 16 IoCs

Processes:

Hsbc_Payment_Advice.exepowershell.exeInstallUtil.execmstp.exeExplorer.EXE

description	pid	process
Token: SeDebugPrivilege	4420	Hsbc_Payment_Advice.exe
Token: SeDebugPrivilege	5112	powershell.exe
Token: SeDebugPrivilege	4664	InstallUtil.exe
Token: SeDebugPrivilege	3392	cmstp.exe
Token: SeShutdownPrivilege	8	Explorer.EXE
Token: SeCreatePagefilePrivilege	8	Explorer.EXE
Token: SeShutdownPrivilege	8	Explorer.EXE
Token: SeCreatePagefilePrivilege	8	Explorer.EXE
Token: SeShutdownPrivilege	8	Explorer.EXE
Token: SeCreatePagefilePrivilege	8	Explorer.EXE
Token: SeShutdownPrivilege	8	Explorer.EXE
Token: SeCreatePagefilePrivilege	8	Explorer.EXE
Token: SeShutdownPrivilege	8	Explorer.EXE
Token: SeCreatePagefilePrivilege	8	Explorer.EXE
Token: SeShutdownPrivilege	8	Explorer.EXE
Token: SeCreatePagefilePrivilege	8	Explorer.EXE

Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

Explorer.EXE

pid process

8 Explorer.EXE
8 Explorer.EXE
Suspicious use of SendNotifyMessage 3 IoCs

Processes:

Explorer.EXE

pid process

8 Explorer.EXE
8 Explorer.EXE
8 Explorer.EXE

pid	process
8	Explorer.EXE
8	Explorer.EXE

pid	process
8	Explorer.EXE
8	Explorer.EXE
8	Explorer.EXE

Suspicious use of WriteProcessMemory 27 IoCs

Processes:

Hsbc_Payment_Advice.exeExplorer.EXEcmstp.exe

description	pid	process	target process
PID 4420 wrote to memory of 5112	4420	Hsbc_Payment_Advice.exe	powershell.exe
PID 4420 wrote to memory of 5112	4420	Hsbc_Payment_Advice.exe	powershell.exe
PID 4420 wrote to memory of 5112	4420	Hsbc_Payment_Advice.exe	powershell.exe
PID 4420 wrote to memory of 4664	4420	Hsbc_Payment_Advice.exe	InstallUtil.exe
PID 4420 wrote to memory of 4664	4420	Hsbc_Payment_Advice.exe	InstallUtil.exe
PID 4420 wrote to memory of 4664	4420	Hsbc_Payment_Advice.exe	InstallUtil.exe
PID 4420 wrote to memory of 4664	4420	Hsbc_Payment_Advice.exe	InstallUtil.exe
PID 4420 wrote to memory of 4664	4420	Hsbc_Payment_Advice.exe	InstallUtil.exe
PID 4420 wrote to memory of 4664	4420	Hsbc_Payment_Advice.exe	InstallUtil.exe
PID 8 wrote to memory of 3392	8	Explorer.EXE	cmstp.exe
PID 8 wrote to memory of 3392	8	Explorer.EXE	cmstp.exe
PID 8 wrote to memory of 3392	8	Explorer.EXE	cmstp.exe
PID 3392 wrote to memory of 1112	3392	cmstp.exe	cmd.exe
PID 3392 wrote to memory of 1112	3392	cmstp.exe	cmd.exe
PID 3392 wrote to memory of 1112	3392	cmstp.exe	cmd.exe
PID 3392 wrote to memory of 1968	3392	cmstp.exe	cmd.exe
PID 3392 wrote to memory of 1968	3392	cmstp.exe	cmd.exe
PID 3392 wrote to memory of 1968	3392	cmstp.exe	cmd.exe
PID 3392 wrote to memory of 4816	3392	cmstp.exe	cmd.exe
PID 3392 wrote to memory of 4816	3392	cmstp.exe	cmd.exe
PID 3392 wrote to memory of 4816	3392	cmstp.exe	cmd.exe
PID 3392 wrote to memory of 3952	3392	cmstp.exe	Firefox.exe
PID 3392 wrote to memory of 3952	3392	cmstp.exe	Firefox.exe
PID 3392 wrote to memory of 3952	3392	cmstp.exe	Firefox.exe
PID 8 wrote to memory of 2344	8	Explorer.EXE	zlm4gzixjtudbngx.exe
PID 8 wrote to memory of 2344	8	Explorer.EXE	zlm4gzixjtudbngx.exe
PID 8 wrote to memory of 2344	8	Explorer.EXE	zlm4gzixjtudbngx.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Drops file in Program Files directory
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:8

C:\Users\Admin\AppData\Local\Temp\Hsbc_Payment_Advice.exe
"C:\Users\Admin\AppData\Local\Temp\Hsbc_Payment_Advice.exe"
2⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4420

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc UwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBTAGUAYwBvAG4AZABzACAANwA=
3⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:5112

C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:4664

C:\Windows\SysWOW64\autoconv.exe
"C:\Windows\SysWOW64\autoconv.exe"
2⤵
PID:2232

C:\Windows\SysWOW64\cmstp.exe
"C:\Windows\SysWOW64\cmstp.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:3392

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe"
3⤵
PID:1112

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:1968

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:4816

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:3952

C:\Program Files (x86)\Frdflx\zlm4gzixjtudbngx.exe
"C:\Program Files (x86)\Frdflx\zlm4gzixjtudbngx.exe"
2⤵
- Executes dropped EXE
PID:2344

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

Credentials in Files

1

T1081

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Data from Local System

1

T1005

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Program Files (x86)\Frdflx\zlm4gzixjtudbngx.exe
Filesize
41KB

MD5
5d4073b2eb6d217c19f2b22f21bf8d57

SHA1
f0209900fbf08d004b886a0b3ba33ea2b0bf9da8

SHA256
ac1a3f21fcc88f9cee7bf51581eafba24cc76c924f0821deb2afdf1080ddf3d3

SHA512
9ac94880684933ba3407cdc135abc3047543436567af14cd9269c4adc5a6535db7b867d6de0d6238a21b94e69f9890dbb5739155871a624520623a7e56872159

Download Submit
C:\Program Files (x86)\Frdflx\zlm4gzixjtudbngx.exe
Filesize
41KB

MD5
5d4073b2eb6d217c19f2b22f21bf8d57

SHA1
f0209900fbf08d004b886a0b3ba33ea2b0bf9da8

SHA256
ac1a3f21fcc88f9cee7bf51581eafba24cc76c924f0821deb2afdf1080ddf3d3

SHA512
9ac94880684933ba3407cdc135abc3047543436567af14cd9269c4adc5a6535db7b867d6de0d6238a21b94e69f9890dbb5739155871a624520623a7e56872159

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/8-163-0x00000000081C0000-0x0000000008336000-memory.dmp

Filesize
1.5MB

Download
memory/8-153-0x0000000007FF0000-0x000000000817B000-memory.dmp

Filesize
1.5MB

Download
memory/8-150-0x0000000002880000-0x0000000002938000-memory.dmp

Filesize
736KB

Download
memory/8-161-0x00000000081C0000-0x0000000008336000-memory.dmp

Filesize
1.5MB

Download
memory/1112-156-0x0000000000000000-mapping.dmp

Download
memory/1968-164-0x0000000000000000-mapping.dmp

Download
memory/2344-171-0x0000000000FA0000-0x0000000000FAC000-memory.dmp

Filesize
48KB

Download
memory/2344-168-0x0000000000000000-mapping.dmp

Download
memory/3392-162-0x0000000000ED0000-0x0000000000EFC000-memory.dmp

Filesize
176KB

Download
memory/3392-160-0x0000000002BD0000-0x0000000002C60000-memory.dmp

Filesize
576KB

Download
memory/3392-159-0x0000000002D70000-0x00000000030BA000-memory.dmp

Filesize
3.3MB

Download
memory/3392-158-0x0000000000ED0000-0x0000000000EFC000-memory.dmp

Filesize
176KB

Download
memory/3392-154-0x0000000000000000-mapping.dmp

Download
memory/3392-157-0x00000000008D0000-0x00000000008E6000-memory.dmp

Filesize
88KB

Download
memory/4420-135-0x0000000004E00000-0x0000000004E0A000-memory.dmp

Filesize
40KB

Download
memory/4420-133-0x0000000004F00000-0x00000000054A4000-memory.dmp

Filesize
5.6MB

Download
memory/4420-134-0x0000000004BF0000-0x0000000004C82000-memory.dmp

Filesize
584KB

Download
memory/4420-132-0x00000000000B0000-0x00000000000C2000-memory.dmp

Filesize
72KB

Download
memory/4420-136-0x0000000006260000-0x0000000006282000-memory.dmp

Filesize
136KB

Download
memory/4664-151-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/4664-155-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/4664-152-0x0000000001790000-0x00000000017A1000-memory.dmp

Filesize
68KB

Download
memory/4664-149-0x00000000013E0000-0x00000000013F1000-memory.dmp

Filesize
68KB

Download
memory/4664-147-0x0000000001440000-0x000000000178A000-memory.dmp

Filesize
3.3MB

Download
memory/4664-146-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/4664-145-0x0000000000000000-mapping.dmp

Download
memory/4816-166-0x0000000000000000-mapping.dmp

Download
memory/5112-143-0x0000000007D90000-0x000000000840A000-memory.dmp

Filesize
6.5MB

Download
memory/5112-142-0x0000000006520000-0x000000000653E000-memory.dmp

Filesize
120KB

Download
memory/5112-144-0x0000000006A10000-0x0000000006A2A000-memory.dmp

Filesize
104KB

Download
memory/5112-141-0x0000000005850000-0x00000000058B6000-memory.dmp

Filesize
408KB

Download
memory/5112-140-0x00000000057E0000-0x0000000005846000-memory.dmp

Filesize
408KB

Download
memory/5112-139-0x0000000005980000-0x0000000005FA8000-memory.dmp

Filesize
6.2MB

Download
memory/5112-138-0x0000000002BD0000-0x0000000002C06000-memory.dmp

Filesize
216KB

Download
memory/5112-137-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads