xloader | e01a44ecacb3c4c0e76c2708ad916ca81dba402b6e75a6fbef2874182af6c97f

General

Target

KYmFioOZjadXGyN.exe
Size

858KB
MD5

27083a2f76b59bee44401da75eaa2aa0
SHA1

fc43853029c2afe4caacada1406ac136a93e19b2
SHA256

e01a44ecacb3c4c0e76c2708ad916ca81dba402b6e75a6fbef2874182af6c97f
SHA512

b4228d82060d79b8568bed481e06d2734fe997bf1c0f3767ea237f90385cceed86237fa3039e30951df0d1f253aabc89d7b09d4b18ce50246f9400ab865c527d

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 5 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/1196-62-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral1/memory/1196-63-0x000000000041F6F0-mapping.dmp	xloader
behavioral1/memory/1196-69-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral1/memory/1920-73-0x00000000000F0000-0x000000000011C000-memory.dmp	xloader
behavioral1/memory/1920-77-0x00000000000F0000-0x000000000011C000-memory.dmp	xloader

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:

KYmFioOZjadXGyN.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-4084403625-2215941253-1760665084-1000\Control Panel\International\Geo\Nation	KYmFioOZjadXGyN.exe

Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

1912 cmd.exe

pid	process
1912	cmd.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

KYmFioOZjadXGyN.exeKYmFioOZjadXGyN.execontrol.exe

description	pid	process	target process
PID 1976 set thread context of 1196	1976	KYmFioOZjadXGyN.exe	KYmFioOZjadXGyN.exe
PID 1196 set thread context of 1244	1196	KYmFioOZjadXGyN.exe	Explorer.EXE
PID 1920 set thread context of 1244	1920	control.exe	Explorer.EXE

Suspicious behavior: EnumeratesProcesses 22 IoCs

Processes:

KYmFioOZjadXGyN.execontrol.exe

pid	process
1196	KYmFioOZjadXGyN.exe
1196	KYmFioOZjadXGyN.exe
1920	control.exe
1920	control.exe
1920	control.exe
1920	control.exe
1920	control.exe
1920	control.exe
1920	control.exe
1920	control.exe
1920	control.exe
1920	control.exe
1920	control.exe
1920	control.exe
1920	control.exe
1920	control.exe
1920	control.exe
1920	control.exe
1920	control.exe
1920	control.exe
1920	control.exe
1920	control.exe

Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

KYmFioOZjadXGyN.execontrol.exe

pid process

1196 KYmFioOZjadXGyN.exe
1196 KYmFioOZjadXGyN.exe
1196 KYmFioOZjadXGyN.exe
1920 control.exe
1920 control.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

KYmFioOZjadXGyN.execontrol.exe

description pid process

Token: SeDebugPrivilege 1196 KYmFioOZjadXGyN.exe
Token: SeDebugPrivilege 1920 control.exe
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

Explorer.EXE

pid process

1244 Explorer.EXE
1244 Explorer.EXE
Suspicious use of SendNotifyMessage 2 IoCs

Processes:

Explorer.EXE

pid process

1244 Explorer.EXE
1244 Explorer.EXE

description	pid	process
Token: SeDebugPrivilege	1196	KYmFioOZjadXGyN.exe
Token: SeDebugPrivilege	1920	control.exe

pid	process
1244	Explorer.EXE
1244	Explorer.EXE

pid	process
1244	Explorer.EXE
1244	Explorer.EXE

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

KYmFioOZjadXGyN.exeExplorer.EXEcontrol.exe

description	pid	process	target process
PID 1976 wrote to memory of 1196	1976	KYmFioOZjadXGyN.exe	KYmFioOZjadXGyN.exe
PID 1976 wrote to memory of 1196	1976	KYmFioOZjadXGyN.exe	KYmFioOZjadXGyN.exe
PID 1976 wrote to memory of 1196	1976	KYmFioOZjadXGyN.exe	KYmFioOZjadXGyN.exe
PID 1976 wrote to memory of 1196	1976	KYmFioOZjadXGyN.exe	KYmFioOZjadXGyN.exe
PID 1976 wrote to memory of 1196	1976	KYmFioOZjadXGyN.exe	KYmFioOZjadXGyN.exe
PID 1976 wrote to memory of 1196	1976	KYmFioOZjadXGyN.exe	KYmFioOZjadXGyN.exe
PID 1976 wrote to memory of 1196	1976	KYmFioOZjadXGyN.exe	KYmFioOZjadXGyN.exe
PID 1244 wrote to memory of 1920	1244	Explorer.EXE	control.exe
PID 1244 wrote to memory of 1920	1244	Explorer.EXE	control.exe
PID 1244 wrote to memory of 1920	1244	Explorer.EXE	control.exe
PID 1244 wrote to memory of 1920	1244	Explorer.EXE	control.exe
PID 1920 wrote to memory of 1912	1920	control.exe	cmd.exe
PID 1920 wrote to memory of 1912	1920	control.exe	cmd.exe
PID 1920 wrote to memory of 1912	1920	control.exe	cmd.exe
PID 1920 wrote to memory of 1912	1920	control.exe	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1244

C:\Users\Admin\AppData\Local\Temp\KYmFioOZjadXGyN.exe
"C:\Users\Admin\AppData\Local\Temp\KYmFioOZjadXGyN.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1976

C:\Users\Admin\AppData\Local\Temp\KYmFioOZjadXGyN.exe
"{path}"
3⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:1196

C:\Windows\SysWOW64\control.exe
"C:\Windows\SysWOW64\control.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1920

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\KYmFioOZjadXGyN.exe"
3⤵
- Deletes itself
PID:1912

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

Replay Monitor

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Downloads

memory/1196-66-0x0000000000170000-0x0000000000181000-memory.dmp

Filesize
68KB

Download
memory/1196-63-0x000000000041F6F0-mapping.dmp

Download
memory/1196-59-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1196-60-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1196-62-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1196-69-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1196-65-0x0000000000A60000-0x0000000000D63000-memory.dmp

Filesize
3.0MB

Download
memory/1244-67-0x0000000006410000-0x00000000065B7000-memory.dmp

Filesize
1.7MB

Download
memory/1244-76-0x0000000004BA0000-0x0000000004C38000-memory.dmp

Filesize
608KB

Download
memory/1244-78-0x0000000004BA0000-0x0000000004C38000-memory.dmp

Filesize
608KB

Download
memory/1912-71-0x0000000000000000-mapping.dmp

Download
memory/1920-73-0x00000000000F0000-0x000000000011C000-memory.dmp

Filesize
176KB

Download
memory/1920-68-0x0000000000000000-mapping.dmp

Download
memory/1920-72-0x00000000000D0000-0x00000000000EF000-memory.dmp

Filesize
124KB

Download
memory/1920-74-0x0000000002030000-0x0000000002333000-memory.dmp

Filesize
3.0MB

Download
memory/1920-75-0x0000000000600000-0x0000000000690000-memory.dmp

Filesize
576KB

Download
memory/1920-77-0x00000000000F0000-0x000000000011C000-memory.dmp

Filesize
176KB

Download
memory/1976-56-0x0000000000250000-0x000000000025A000-memory.dmp

Filesize
40KB

Download
memory/1976-58-0x00000000004D0000-0x0000000000502000-memory.dmp

Filesize
200KB

Download
memory/1976-55-0x0000000075DC1000-0x0000000075DC3000-memory.dmp

Filesize
8KB

Download
memory/1976-57-0x0000000007FA0000-0x0000000008026000-memory.dmp

Filesize
536KB

Download
memory/1976-54-0x0000000000EC0000-0x0000000000F9C000-memory.dmp

Filesize
880KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads