xloader | 8fafbbb38c64c1405f96387180d8edd24593698e10ae3e2cc51aff8ca57623a8

General

Target

Payment_Advice.exe
Size

889KB
MD5

b34bfacc4c2f20b5109f7a19c7027468
SHA1

be376771cbb432bf2dfe89e795017d722574d57e
SHA256

8fafbbb38c64c1405f96387180d8edd24593698e10ae3e2cc51aff8ca57623a8
SHA512

599fb61db8f215e741a8ed3d5b292ac3a38746993781f161ef386f473fa38ef862b0c1f0a493ddd9fd3642fb140bfff44f3ed33ff8699746baf282299384a66f

Score

10^/10

xloader zzun loader 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 4 IoCs

rat

Processes:

resource	yara_rule
behavioral2/memory/3388-139-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral2/memory/3388-145-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral2/memory/3140-148-0x00000000009B0000-0x00000000009DC000-memory.dmp	xloader
behavioral2/memory/3140-152-0x00000000009B0000-0x00000000009DC000-memory.dmp	xloader

Blocklisted process makes network request 1 IoCs

Processes:

msiexec.exe

flow pid process

54 3140 msiexec.exe

flow	pid	process
54	3140	msiexec.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:

Payment_Advice.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3463845317-933582289-45817732-1000\Control Panel\International\Geo\Nation	Payment_Advice.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

Payment_Advice.exePayment_Advice.exemsiexec.exe

description	pid	process	target process
PID 3788 set thread context of 3388	3788	Payment_Advice.exe	Payment_Advice.exe
PID 3388 set thread context of 2948	3388	Payment_Advice.exe	Explorer.EXE
PID 3140 set thread context of 2948	3140	msiexec.exe	Explorer.EXE

Suspicious behavior: EnumeratesProcesses 50 IoCs

Processes:

Payment_Advice.exePayment_Advice.exemsiexec.exe

pid	process
3788	Payment_Advice.exe
3788	Payment_Advice.exe
3388	Payment_Advice.exe
3388	Payment_Advice.exe
3388	Payment_Advice.exe
3388	Payment_Advice.exe
3140	msiexec.exe
3140	msiexec.exe
3140	msiexec.exe
3140	msiexec.exe
3140	msiexec.exe
3140	msiexec.exe
3140	msiexec.exe
3140	msiexec.exe
3140	msiexec.exe
3140	msiexec.exe
3140	msiexec.exe
3140	msiexec.exe
3140	msiexec.exe
3140	msiexec.exe
3140	msiexec.exe
3140	msiexec.exe
3140	msiexec.exe
3140	msiexec.exe
3140	msiexec.exe
3140	msiexec.exe
3140	msiexec.exe
3140	msiexec.exe
3140	msiexec.exe
3140	msiexec.exe
3140	msiexec.exe
3140	msiexec.exe
3140	msiexec.exe
3140	msiexec.exe
3140	msiexec.exe
3140	msiexec.exe
3140	msiexec.exe
3140	msiexec.exe
3140	msiexec.exe
3140	msiexec.exe
3140	msiexec.exe
3140	msiexec.exe
3140	msiexec.exe
3140	msiexec.exe
3140	msiexec.exe
3140	msiexec.exe
3140	msiexec.exe
3140	msiexec.exe
3140	msiexec.exe
3140	msiexec.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

2948 Explorer.EXE
Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

Payment_Advice.exemsiexec.exe

pid process

3388 Payment_Advice.exe
3388 Payment_Advice.exe
3388 Payment_Advice.exe
3140 msiexec.exe
3140 msiexec.exe

pid	process
2948	Explorer.EXE

pid	process
3388	Payment_Advice.exe
3388	Payment_Advice.exe
3388	Payment_Advice.exe
3140	msiexec.exe
3140	msiexec.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

Payment_Advice.exePayment_Advice.exemsiexec.exe

description	pid	process
Token: SeDebugPrivilege	3788	Payment_Advice.exe
Token: SeDebugPrivilege	3388	Payment_Advice.exe
Token: SeDebugPrivilege	3140	msiexec.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

Payment_Advice.exeExplorer.EXEmsiexec.exe

description	pid	process	target process
PID 3788 wrote to memory of 3540	3788	Payment_Advice.exe	Payment_Advice.exe
PID 3788 wrote to memory of 3540	3788	Payment_Advice.exe	Payment_Advice.exe
PID 3788 wrote to memory of 3540	3788	Payment_Advice.exe	Payment_Advice.exe
PID 3788 wrote to memory of 3388	3788	Payment_Advice.exe	Payment_Advice.exe
PID 3788 wrote to memory of 3388	3788	Payment_Advice.exe	Payment_Advice.exe
PID 3788 wrote to memory of 3388	3788	Payment_Advice.exe	Payment_Advice.exe
PID 3788 wrote to memory of 3388	3788	Payment_Advice.exe	Payment_Advice.exe
PID 3788 wrote to memory of 3388	3788	Payment_Advice.exe	Payment_Advice.exe
PID 3788 wrote to memory of 3388	3788	Payment_Advice.exe	Payment_Advice.exe
PID 2948 wrote to memory of 3140	2948	Explorer.EXE	msiexec.exe
PID 2948 wrote to memory of 3140	2948	Explorer.EXE	msiexec.exe
PID 2948 wrote to memory of 3140	2948	Explorer.EXE	msiexec.exe
PID 3140 wrote to memory of 3836	3140	msiexec.exe	cmd.exe
PID 3140 wrote to memory of 3836	3140	msiexec.exe	cmd.exe
PID 3140 wrote to memory of 3836	3140	msiexec.exe	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:2948

C:\Users\Admin\AppData\Local\Temp\Payment_Advice.exe
"C:\Users\Admin\AppData\Local\Temp\Payment_Advice.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3788

C:\Users\Admin\AppData\Local\Temp\Payment_Advice.exe
"{path}"
3⤵
PID:3540

C:\Users\Admin\AppData\Local\Temp\Payment_Advice.exe
"{path}"
3⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:3388

C:\Windows\SysWOW64\msiexec.exe
"C:\Windows\SysWOW64\msiexec.exe"
2⤵
- Blocklisted process makes network request
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3140

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\Payment_Advice.exe"
3⤵
PID:3836

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

memory/2948-143-0x00000000086D0000-0x0000000008813000-memory.dmp

Filesize
1.3MB

Download
memory/2948-153-0x0000000008B80000-0x0000000008CED000-memory.dmp

Filesize
1.4MB

Download
memory/2948-151-0x0000000008B80000-0x0000000008CED000-memory.dmp

Filesize
1.4MB

Download
memory/3140-148-0x00000000009B0000-0x00000000009DC000-memory.dmp

Filesize
176KB

Download
memory/3140-144-0x0000000000000000-mapping.dmp

Download
memory/3140-152-0x00000000009B0000-0x00000000009DC000-memory.dmp

Filesize
176KB

Download
memory/3140-150-0x0000000002A40000-0x0000000002AD0000-memory.dmp

Filesize
576KB

Download
memory/3140-149-0x0000000002CA0000-0x0000000002FEA000-memory.dmp

Filesize
3.3MB

Download
memory/3140-147-0x0000000000050000-0x0000000000062000-memory.dmp

Filesize
72KB

Download
memory/3388-140-0x00000000013E0000-0x000000000172A000-memory.dmp

Filesize
3.3MB

Download
memory/3388-142-0x0000000000EF0000-0x0000000000F01000-memory.dmp

Filesize
68KB

Download
memory/3388-145-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/3388-139-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/3388-138-0x0000000000000000-mapping.dmp

Download
memory/3540-137-0x0000000000000000-mapping.dmp

Download
memory/3788-135-0x0000000005660000-0x00000000056FC000-memory.dmp

Filesize
624KB

Download
memory/3788-136-0x0000000005580000-0x000000000558A000-memory.dmp

Filesize
40KB

Download
memory/3788-132-0x0000000000A50000-0x0000000000B34000-memory.dmp

Filesize
912KB

Download
memory/3788-134-0x00000000054D0000-0x0000000005562000-memory.dmp

Filesize
584KB

Download
memory/3788-133-0x0000000005B70000-0x0000000006114000-memory.dmp

Filesize
5.6MB

Download
memory/3836-146-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads