xloader | 5c8f31380d956958134331ea55e63835fd16ca1f02f4c81672b69db70bc97ab8

General

Target

truck pictures.exe
Size

634KB
MD5

99ed5f72e5742e549a6ec78655fd3cfc
SHA1

31a4f6fc81c45e49f4787cebe622256fa74d8a06
SHA256

5c8f31380d956958134331ea55e63835fd16ca1f02f4c81672b69db70bc97ab8
SHA512

45abc2973402ba0ae81b4e708c257c9e8f5fe472b1fdf969766697a5226481764b0bf8d9be8dd99effd47e7556ed0110b48b892c315d850b952ed700ac2f9711

Score

10^/10

xloader cuig loader persistence rat suricata

Malware Config

Extracted

Family

xloader

Version

2.5

Campaign

cuig

C2

http://www.qtih.top/cuig/

Decoy

sofiathinks-elderly.net

lahamicoast.info

2shengman.com

cbsautoplex.com

arcana-candles.com

genrage.com

kukumiou.xyz

thequizerking.com

sonataproductions.com

rebuildgomnmf.xyz

ubcoin.store

yiyouxue.net

firstlifehome.com

mdx-inc.net

gotbn-c01.com

dinobrindes.store

jcm-iso.com

cliente-mais.com

mloujewelry.com

correoversoi.quest

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

Xloader Payload 4 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/1556-60-0x000000000041D3F0-mapping.dmp	xloader
behavioral1/memory/1556-59-0x0000000000400000-0x0000000000429000-memory.dmp	xloader
behavioral1/memory/1880-66-0x0000000000080000-0x00000000000A9000-memory.dmp	xloader
behavioral1/memory/1464-85-0x000000000041D3F0-mapping.dmp	xloader

Executes dropped EXE 2 IoCs

Processes:

ThumbCacheg0h.exeThumbCacheg0h.exe

pid process

1916 ThumbCacheg0h.exe
1464 ThumbCacheg0h.exe
Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

680 cmd.exe

pid	process
1916	ThumbCacheg0h.exe
1464	ThumbCacheg0h.exe

pid	process
680	cmd.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\LRH0P2EH5VE = "C:\\Program Files (x86)\\Kwnuxv4rh\\ThumbCacheg0h.exe"	svchost.exe
Key created	\Registry\Machine\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run	svchost.exe

Suspicious use of SetThreadContext 4 IoCs

Processes:

truck pictures.exetruck pictures.exesvchost.exeThumbCacheg0h.exe

description	pid	process	target process
PID 1144 set thread context of 1556	1144	truck pictures.exe	truck pictures.exe
PID 1556 set thread context of 1392	1556	truck pictures.exe	Explorer.EXE
PID 1880 set thread context of 1392	1880	svchost.exe	Explorer.EXE
PID 1916 set thread context of 1464	1916	ThumbCacheg0h.exe	ThumbCacheg0h.exe

Drops file in Program Files directory 2 IoCs

Processes:

svchost.exeExplorer.EXE

description	ioc	process
File opened for modification	C:\Program Files (x86)\Kwnuxv4rh\ThumbCacheg0h.exe	svchost.exe
File created	C:\Program Files (x86)\Kwnuxv4rh\ThumbCacheg0h.exe	Explorer.EXE

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	process
Key created	\Registry\User\S-1-5-21-3456797065-1076791440-4146276586-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	svchost.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

truck pictures.exetruck pictures.exesvchost.exeThumbCacheg0h.exeThumbCacheg0h.exe

pid	process
1144	truck pictures.exe
1144	truck pictures.exe
1144	truck pictures.exe
1144	truck pictures.exe
1144	truck pictures.exe
1144	truck pictures.exe
1144	truck pictures.exe
1144	truck pictures.exe
1556	truck pictures.exe
1556	truck pictures.exe
1880	svchost.exe
1880	svchost.exe
1880	svchost.exe
1880	svchost.exe
1880	svchost.exe
1880	svchost.exe
1880	svchost.exe
1880	svchost.exe
1880	svchost.exe
1880	svchost.exe
1880	svchost.exe
1880	svchost.exe
1880	svchost.exe
1880	svchost.exe
1880	svchost.exe
1880	svchost.exe
1880	svchost.exe
1880	svchost.exe
1880	svchost.exe
1880	svchost.exe
1880	svchost.exe
1880	svchost.exe
1880	svchost.exe
1880	svchost.exe
1880	svchost.exe
1880	svchost.exe
1880	svchost.exe
1880	svchost.exe
1880	svchost.exe
1880	svchost.exe
1880	svchost.exe
1880	svchost.exe
1880	svchost.exe
1880	svchost.exe
1880	svchost.exe
1880	svchost.exe
1880	svchost.exe
1880	svchost.exe
1880	svchost.exe
1880	svchost.exe
1916	ThumbCacheg0h.exe
1916	ThumbCacheg0h.exe
1916	ThumbCacheg0h.exe
1880	svchost.exe
1916	ThumbCacheg0h.exe
1916	ThumbCacheg0h.exe
1880	svchost.exe
1916	ThumbCacheg0h.exe
1464	ThumbCacheg0h.exe
1880	svchost.exe
1880	svchost.exe
1880	svchost.exe
1880	svchost.exe
1880	svchost.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

1392 Explorer.EXE
Suspicious behavior: MapViewOfSection 7 IoCs

Processes:

truck pictures.exesvchost.exe

pid process

1556 truck pictures.exe
1556 truck pictures.exe
1556 truck pictures.exe
1880 svchost.exe
1880 svchost.exe
1880 svchost.exe
1880 svchost.exe

pid	process
1392	Explorer.EXE

pid	process
1556	truck pictures.exe
1556	truck pictures.exe
1556	truck pictures.exe
1880	svchost.exe
1880	svchost.exe
1880	svchost.exe
1880	svchost.exe

Suspicious use of AdjustPrivilegeToken 7 IoCs

Processes:

truck pictures.exetruck pictures.exesvchost.exeExplorer.EXEThumbCacheg0h.exeThumbCacheg0h.exe

description	pid	process
Token: SeDebugPrivilege	1144	truck pictures.exe
Token: SeDebugPrivilege	1556	truck pictures.exe
Token: SeDebugPrivilege	1880	svchost.exe
Token: SeShutdownPrivilege	1392	Explorer.EXE
Token: SeDebugPrivilege	1916	ThumbCacheg0h.exe
Token: SeDebugPrivilege	1464	ThumbCacheg0h.exe
Token: SeShutdownPrivilege	1392	Explorer.EXE

Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

Explorer.EXE

pid process

1392 Explorer.EXE
1392 Explorer.EXE
Suspicious use of SendNotifyMessage 2 IoCs

Processes:

Explorer.EXE

pid process

1392 Explorer.EXE
1392 Explorer.EXE

pid	process
1392	Explorer.EXE
1392	Explorer.EXE

pid	process
1392	Explorer.EXE
1392	Explorer.EXE

Suspicious use of WriteProcessMemory 35 IoCs

Processes:

truck pictures.exeExplorer.EXEsvchost.exeThumbCacheg0h.exe

description	pid	process	target process
PID 1144 wrote to memory of 1536	1144	truck pictures.exe	truck pictures.exe
PID 1144 wrote to memory of 1536	1144	truck pictures.exe	truck pictures.exe
PID 1144 wrote to memory of 1536	1144	truck pictures.exe	truck pictures.exe
PID 1144 wrote to memory of 1536	1144	truck pictures.exe	truck pictures.exe
PID 1144 wrote to memory of 1556	1144	truck pictures.exe	truck pictures.exe
PID 1144 wrote to memory of 1556	1144	truck pictures.exe	truck pictures.exe
PID 1144 wrote to memory of 1556	1144	truck pictures.exe	truck pictures.exe
PID 1144 wrote to memory of 1556	1144	truck pictures.exe	truck pictures.exe
PID 1144 wrote to memory of 1556	1144	truck pictures.exe	truck pictures.exe
PID 1144 wrote to memory of 1556	1144	truck pictures.exe	truck pictures.exe
PID 1144 wrote to memory of 1556	1144	truck pictures.exe	truck pictures.exe
PID 1392 wrote to memory of 1880	1392	Explorer.EXE	svchost.exe
PID 1392 wrote to memory of 1880	1392	Explorer.EXE	svchost.exe
PID 1392 wrote to memory of 1880	1392	Explorer.EXE	svchost.exe
PID 1392 wrote to memory of 1880	1392	Explorer.EXE	svchost.exe
PID 1880 wrote to memory of 680	1880	svchost.exe	cmd.exe
PID 1880 wrote to memory of 680	1880	svchost.exe	cmd.exe
PID 1880 wrote to memory of 680	1880	svchost.exe	cmd.exe
PID 1880 wrote to memory of 680	1880	svchost.exe	cmd.exe
PID 1880 wrote to memory of 1336	1880	svchost.exe	Firefox.exe
PID 1880 wrote to memory of 1336	1880	svchost.exe	Firefox.exe
PID 1880 wrote to memory of 1336	1880	svchost.exe	Firefox.exe
PID 1880 wrote to memory of 1336	1880	svchost.exe	Firefox.exe
PID 1392 wrote to memory of 1916	1392	Explorer.EXE	ThumbCacheg0h.exe
PID 1392 wrote to memory of 1916	1392	Explorer.EXE	ThumbCacheg0h.exe
PID 1392 wrote to memory of 1916	1392	Explorer.EXE	ThumbCacheg0h.exe
PID 1392 wrote to memory of 1916	1392	Explorer.EXE	ThumbCacheg0h.exe
PID 1880 wrote to memory of 1336	1880	svchost.exe	Firefox.exe
PID 1916 wrote to memory of 1464	1916	ThumbCacheg0h.exe	ThumbCacheg0h.exe
PID 1916 wrote to memory of 1464	1916	ThumbCacheg0h.exe	ThumbCacheg0h.exe
PID 1916 wrote to memory of 1464	1916	ThumbCacheg0h.exe	ThumbCacheg0h.exe
PID 1916 wrote to memory of 1464	1916	ThumbCacheg0h.exe	ThumbCacheg0h.exe
PID 1916 wrote to memory of 1464	1916	ThumbCacheg0h.exe	ThumbCacheg0h.exe
PID 1916 wrote to memory of 1464	1916	ThumbCacheg0h.exe	ThumbCacheg0h.exe
PID 1916 wrote to memory of 1464	1916	ThumbCacheg0h.exe	ThumbCacheg0h.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:1392

C:\Users\Admin\AppData\Local\Temp\truck pictures.exe
"C:\Users\Admin\AppData\Local\Temp\truck pictures.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1144

C:\Users\Admin\AppData\Local\Temp\truck pictures.exe
"C:\Users\Admin\AppData\Local\Temp\truck pictures.exe"
3⤵
PID:1536

C:\Users\Admin\AppData\Local\Temp\truck pictures.exe
"C:\Users\Admin\AppData\Local\Temp\truck pictures.exe"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:1556

C:\Windows\SysWOW64\svchost.exe
"C:\Windows\SysWOW64\svchost.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:1880

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\truck pictures.exe"
3⤵
- Deletes itself
PID:680

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:1336

C:\Program Files (x86)\Kwnuxv4rh\ThumbCacheg0h.exe
"C:\Program Files (x86)\Kwnuxv4rh\ThumbCacheg0h.exe"
2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1916

C:\Program Files (x86)\Kwnuxv4rh\ThumbCacheg0h.exe
"C:\Program Files (x86)\Kwnuxv4rh\ThumbCacheg0h.exe"
3⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1464

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

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Program Files (x86)\Kwnuxv4rh\ThumbCacheg0h.exe
MD5
99ed5f72e5742e549a6ec78655fd3cfc

SHA1
31a4f6fc81c45e49f4787cebe622256fa74d8a06

SHA256
5c8f31380d956958134331ea55e63835fd16ca1f02f4c81672b69db70bc97ab8

SHA512
45abc2973402ba0ae81b4e708c257c9e8f5fe472b1fdf969766697a5226481764b0bf8d9be8dd99effd47e7556ed0110b48b892c315d850b952ed700ac2f9711

Download Submit
C:\Program Files (x86)\Kwnuxv4rh\ThumbCacheg0h.exe
MD5
99ed5f72e5742e549a6ec78655fd3cfc

SHA1
31a4f6fc81c45e49f4787cebe622256fa74d8a06

SHA256
5c8f31380d956958134331ea55e63835fd16ca1f02f4c81672b69db70bc97ab8

SHA512
45abc2973402ba0ae81b4e708c257c9e8f5fe472b1fdf969766697a5226481764b0bf8d9be8dd99effd47e7556ed0110b48b892c315d850b952ed700ac2f9711

Download Submit
C:\Program Files (x86)\Kwnuxv4rh\ThumbCacheg0h.exe
MD5
99ed5f72e5742e549a6ec78655fd3cfc

SHA1
31a4f6fc81c45e49f4787cebe622256fa74d8a06

SHA256
5c8f31380d956958134331ea55e63835fd16ca1f02f4c81672b69db70bc97ab8

SHA512
45abc2973402ba0ae81b4e708c257c9e8f5fe472b1fdf969766697a5226481764b0bf8d9be8dd99effd47e7556ed0110b48b892c315d850b952ed700ac2f9711

Download Submit
memory/680-68-0x0000000000000000-mapping.dmp

Download
memory/1144-55-0x0000000000440000-0x0000000000447000-memory.dmp

Filesize
28KB

Download
memory/1144-56-0x0000000002010000-0x0000000002011000-memory.dmp

Filesize
4KB

Download
memory/1144-57-0x0000000004300000-0x0000000004360000-memory.dmp

Filesize
384KB

Download
memory/1144-58-0x0000000001F80000-0x0000000001FAB000-memory.dmp

Filesize
172KB

Download
memory/1144-53-0x0000000000010000-0x0000000000011000-memory.dmp

Filesize
4KB

Download
memory/1336-79-0x0000000000000000-mapping.dmp

Download
memory/1336-81-0x0000000000060000-0x0000000000119000-memory.dmp

Filesize
740KB

Download
memory/1336-80-0x000000013F440000-0x000000013F4D3000-memory.dmp

Filesize
588KB

Download
memory/1392-70-0x0000000006BB0000-0x0000000006D36000-memory.dmp

Filesize
1.5MB

Download
memory/1392-63-0x00000000065A0000-0x000000000667D000-memory.dmp

Filesize
884KB

Download
memory/1464-85-0x000000000041D3F0-mapping.dmp

Download
memory/1464-87-0x00000000009A0000-0x0000000000CA3000-memory.dmp

Filesize
3.0MB

Download
memory/1556-62-0x0000000000240000-0x0000000000251000-memory.dmp

Filesize
68KB

Download
memory/1556-61-0x0000000000AC0000-0x0000000000DC3000-memory.dmp

Filesize
3.0MB

Download
memory/1556-59-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/1556-60-0x000000000041D3F0-mapping.dmp

Download
memory/1880-71-0x0000000076581000-0x0000000076583000-memory.dmp

Filesize
8KB

Download
memory/1880-69-0x0000000000530000-0x00000000005C0000-memory.dmp

Filesize
576KB

Download
memory/1880-65-0x0000000000250000-0x0000000000258000-memory.dmp

Filesize
32KB

Download
memory/1880-67-0x00000000008F0000-0x0000000000BF3000-memory.dmp

Filesize
3.0MB

Download
memory/1880-66-0x0000000000080000-0x00000000000A9000-memory.dmp

Filesize
164KB

Download
memory/1880-64-0x0000000000000000-mapping.dmp

Download
memory/1916-72-0x0000000000000000-mapping.dmp

Download
memory/1916-75-0x0000000000FF0000-0x0000000000FF1000-memory.dmp

Filesize
4KB

Download
memory/1916-78-0x0000000000FA0000-0x0000000000FA1000-memory.dmp

Filesize
4KB

Download

Resubmissions

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

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Downloads