xloader | 0c766eeb9fc5218d11643873f73ee5e5226fecb6c8571cbb373abf4e696d9026

General

Target

PINM0004334567.exe
Size

61KB
MD5

91a4021e289a152474fcc8e4a4ccccff
SHA1

ac02a26791571871d2e3f1d855d48d3c5025cbdb
SHA256

0c766eeb9fc5218d11643873f73ee5e5226fecb6c8571cbb373abf4e696d9026
SHA512

0c3282f79136ac4678a3f070f727bb4fa564a238fd4fa6f2435791c175d77950294cb6a2999e2d0a4d290b2cfe52736a60e2273532f8c6f30bbd5f13abbec646
SSDEEP

1536:HU23X9NKwuDUaQl+kzdC9GiZQWSwi/fUpS/fX/MNp:HUWQwuis1Jy///f/MT

Score

10^/10

xloader zzun loader persistence 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 5 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/1928-64-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral1/memory/1928-65-0x000000000041F6F0-mapping.dmp	xloader
behavioral1/memory/1928-67-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral1/memory/956-74-0x00000000000C0000-0x00000000000EC000-memory.dmp	xloader
behavioral1/memory/956-79-0x00000000000C0000-0x00000000000EC000-memory.dmp	xloader

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

PINM0004334567.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2591564548-2301609547-1748242483-1000\Software\Microsoft\Windows\CurrentVersion\Run\Uhrqqe = "\"C:\\Users\\Admin\\AppData\\Roaming\\Wjiebhkca\\Uhrqqe.exe\""	PINM0004334567.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

PINM0004334567.exeInstallUtil.exemsdt.exe

description	pid	process	target process
PID 748 set thread context of 1928	748	PINM0004334567.exe	InstallUtil.exe
PID 1928 set thread context of 1292	1928	InstallUtil.exe	Explorer.EXE
PID 956 set thread context of 1292	956	msdt.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

Suspicious behavior: EnumeratesProcesses 26 IoCs

Processes:

PINM0004334567.exepowershell.exeInstallUtil.exemsdt.exe

pid	process
748	PINM0004334567.exe
2020	powershell.exe
1928	InstallUtil.exe
1928	InstallUtil.exe
956	msdt.exe
956	msdt.exe
956	msdt.exe
956	msdt.exe
956	msdt.exe
956	msdt.exe
956	msdt.exe
956	msdt.exe
956	msdt.exe
956	msdt.exe
956	msdt.exe
956	msdt.exe
956	msdt.exe
956	msdt.exe
956	msdt.exe
956	msdt.exe
956	msdt.exe
956	msdt.exe
956	msdt.exe
956	msdt.exe
956	msdt.exe
956	msdt.exe

Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

InstallUtil.exemsdt.exe

pid process

1928 InstallUtil.exe
1928 InstallUtil.exe
1928 InstallUtil.exe
956 msdt.exe
956 msdt.exe

pid	process
1928	InstallUtil.exe
1928	InstallUtil.exe
1928	InstallUtil.exe
956	msdt.exe
956	msdt.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

PINM0004334567.exepowershell.exeInstallUtil.exemsdt.exe

description	pid	process
Token: SeDebugPrivilege	748	PINM0004334567.exe
Token: SeDebugPrivilege	2020	powershell.exe
Token: SeDebugPrivilege	1928	InstallUtil.exe
Token: SeDebugPrivilege	956	msdt.exe

Suspicious use of WriteProcessMemory 22 IoCs

Processes:

PINM0004334567.exeExplorer.EXEmsdt.exe

description	pid	process	target process
PID 748 wrote to memory of 2020	748	PINM0004334567.exe	powershell.exe
PID 748 wrote to memory of 2020	748	PINM0004334567.exe	powershell.exe
PID 748 wrote to memory of 2020	748	PINM0004334567.exe	powershell.exe
PID 748 wrote to memory of 2020	748	PINM0004334567.exe	powershell.exe
PID 748 wrote to memory of 1928	748	PINM0004334567.exe	InstallUtil.exe
PID 748 wrote to memory of 1928	748	PINM0004334567.exe	InstallUtil.exe
PID 748 wrote to memory of 1928	748	PINM0004334567.exe	InstallUtil.exe
PID 748 wrote to memory of 1928	748	PINM0004334567.exe	InstallUtil.exe
PID 748 wrote to memory of 1928	748	PINM0004334567.exe	InstallUtil.exe
PID 748 wrote to memory of 1928	748	PINM0004334567.exe	InstallUtil.exe
PID 748 wrote to memory of 1928	748	PINM0004334567.exe	InstallUtil.exe
PID 748 wrote to memory of 1928	748	PINM0004334567.exe	InstallUtil.exe
PID 748 wrote to memory of 1928	748	PINM0004334567.exe	InstallUtil.exe
PID 748 wrote to memory of 1928	748	PINM0004334567.exe	InstallUtil.exe
PID 1292 wrote to memory of 956	1292	Explorer.EXE	msdt.exe
PID 1292 wrote to memory of 956	1292	Explorer.EXE	msdt.exe
PID 1292 wrote to memory of 956	1292	Explorer.EXE	msdt.exe
PID 1292 wrote to memory of 956	1292	Explorer.EXE	msdt.exe
PID 956 wrote to memory of 1500	956	msdt.exe	cmd.exe
PID 956 wrote to memory of 1500	956	msdt.exe	cmd.exe
PID 956 wrote to memory of 1500	956	msdt.exe	cmd.exe
PID 956 wrote to memory of 1500	956	msdt.exe	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1292

C:\Users\Admin\AppData\Local\Temp\PINM0004334567.exe
"C:\Users\Admin\AppData\Local\Temp\PINM0004334567.exe"
2⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:748

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:2020

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:1928

C:\Windows\SysWOW64\autochk.exe
"C:\Windows\SysWOW64\autochk.exe"
2⤵
PID:844

C:\Windows\SysWOW64\msdt.exe
"C:\Windows\SysWOW64\msdt.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:956

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe"
3⤵
PID:1500

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

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

memory/748-54-0x0000000000380000-0x0000000000394000-memory.dmp

Filesize
80KB

Download
memory/748-55-0x0000000076141000-0x0000000076143000-memory.dmp

Filesize
8KB

Download
memory/748-56-0x0000000005AA0000-0x0000000005C94000-memory.dmp

Filesize
2.0MB

Download
memory/956-74-0x00000000000C0000-0x00000000000EC000-memory.dmp

Filesize
176KB

Download
memory/956-79-0x00000000000C0000-0x00000000000EC000-memory.dmp

Filesize
176KB

Download
memory/956-77-0x0000000001FC0000-0x0000000002050000-memory.dmp

Filesize
576KB

Download
memory/956-76-0x0000000002150000-0x0000000002453000-memory.dmp

Filesize
3.0MB

Download
memory/956-73-0x0000000000AC0000-0x0000000000BB4000-memory.dmp

Filesize
976KB

Download
memory/956-71-0x0000000000000000-mapping.dmp

Download
memory/1292-78-0x00000000070B0000-0x00000000071C5000-memory.dmp

Filesize
1.1MB

Download
memory/1292-70-0x0000000006510000-0x0000000006600000-memory.dmp

Filesize
960KB

Download
memory/1292-80-0x00000000070B0000-0x00000000071C5000-memory.dmp

Filesize
1.1MB

Download
memory/1500-75-0x0000000000000000-mapping.dmp

Download
memory/1928-67-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1928-69-0x0000000000220000-0x0000000000231000-memory.dmp

Filesize
68KB

Download
memory/1928-68-0x0000000000850000-0x0000000000B53000-memory.dmp

Filesize
3.0MB

Download
memory/1928-65-0x000000000041F6F0-mapping.dmp

Download
memory/1928-64-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1928-62-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1928-61-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/2020-60-0x000000006F630000-0x000000006FBDB000-memory.dmp

Filesize
5.7MB

Download
memory/2020-59-0x000000006F630000-0x000000006FBDB000-memory.dmp

Filesize
5.7MB

Download
memory/2020-57-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads