xloader | d7dae1d41bdbc82c9162dc6d129670c05d5e80dc83783a48df90616099ca507d

General

Target

tmp.exe
Size

876KB
MD5

4b86af1f12bcc05b5586eec0f26e0ef9
SHA1

750cec00b9f8b8298436e41bf8083c7842b95b05
SHA256

d7dae1d41bdbc82c9162dc6d129670c05d5e80dc83783a48df90616099ca507d
SHA512

325426b9274b1e8e30740123f738f137d4055aae1d00cd1af3b1dd704882f0d058dc767af4cbdfb6b419b5137c4349d31cdfacb879d1c2c1d99e61dc29959418

Score

10^/10

xloader nn40 loader rat suricata

Malware Config

Extracted

Family

xloader

Version

2.8

Campaign

nn40

Decoy

LYAg0yANOGEAGeaFOrA/

MQWuERZplP+VZy/uszI=

CF0oDN0JimIaGy/uszI=

ltJnyC+ReohYaiTvj1qbEA==

B9OkgdctVKBAFjSUaw==

sbDVwSZVVqVB11/deow8GA==

v1gHDe0pzno=

i+/0n2vHUfGPR98k77tukZ90MQ==

SUtCnbS96Qm21g==

8X9qzyt1dpAo31jXrXfKb49fBPY=

5KlPxqHzSstuFjSUaw==

0r/Kesv/zuanroxvNQW0Gm8=

FFgS7kfPYAqpdhhgRgnBJHY=

LgusAHrkrIoWr0FWIe2o/04UXPw=

vBq9Gvxa9wbKbS/uszI=

Z+q6HAZNNeqwwQ==

wbS4fMb06SjU5Kbseow8GA==

1mZEuZvJ/m0L9bof56PkkZ90MQ==

JCJIM74lHk/o+tiFOrA/

d14FrM8rGEgIzVkT67+3XaEh

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 5 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/1908-63-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral1/memory/1908-64-0x000000000041F640-mapping.dmp	xloader
behavioral1/memory/1908-68-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral1/memory/844-73-0x0000000000080000-0x00000000000AC000-memory.dmp	xloader
behavioral1/memory/844-77-0x0000000000080000-0x00000000000AC000-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:

tmp.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-335065374-4263250628-1829373619-1000\Control Panel\International\Geo\Nation tmp.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-335065374-4263250628-1829373619-1000\Control Panel\International\Geo\Nation	tmp.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

tmp.exetmp.exeNAPSTAT.EXE

description	pid	process	target process
PID 1936 set thread context of 1908	1936	tmp.exe	tmp.exe
PID 1908 set thread context of 1432	1908	tmp.exe	Explorer.EXE
PID 844 set thread context of 1432	844	NAPSTAT.EXE	Explorer.EXE

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

NAPSTAT.EXE

description	ioc	process
Key created	\Registry\User\S-1-5-21-335065374-4263250628-1829373619-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	NAPSTAT.EXE

Suspicious behavior: EnumeratesProcesses 21 IoCs

Processes:

tmp.exeNAPSTAT.EXE

pid	process
1908	tmp.exe
1908	tmp.exe
844	NAPSTAT.EXE
844	NAPSTAT.EXE
844	NAPSTAT.EXE
844	NAPSTAT.EXE
844	NAPSTAT.EXE
844	NAPSTAT.EXE
844	NAPSTAT.EXE
844	NAPSTAT.EXE
844	NAPSTAT.EXE
844	NAPSTAT.EXE
844	NAPSTAT.EXE
844	NAPSTAT.EXE
844	NAPSTAT.EXE
844	NAPSTAT.EXE
844	NAPSTAT.EXE
844	NAPSTAT.EXE
844	NAPSTAT.EXE
844	NAPSTAT.EXE
844	NAPSTAT.EXE

Suspicious behavior: MapViewOfSection 7 IoCs

Processes:

tmp.exeNAPSTAT.EXE

pid process

1908 tmp.exe
1908 tmp.exe
1908 tmp.exe
844 NAPSTAT.EXE
844 NAPSTAT.EXE
844 NAPSTAT.EXE
844 NAPSTAT.EXE
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

tmp.exeNAPSTAT.EXE

description pid process

Token: SeDebugPrivilege 1908 tmp.exe
Token: SeDebugPrivilege 844 NAPSTAT.EXE
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

Explorer.EXE

pid process

1432 Explorer.EXE
1432 Explorer.EXE
Suspicious use of SendNotifyMessage 2 IoCs

Processes:

Explorer.EXE

pid process

1432 Explorer.EXE
1432 Explorer.EXE

description	pid	process
Token: SeDebugPrivilege	1908	tmp.exe
Token: SeDebugPrivilege	844	NAPSTAT.EXE

pid	process
1432	Explorer.EXE
1432	Explorer.EXE

pid	process
1432	Explorer.EXE
1432	Explorer.EXE

Suspicious use of WriteProcessMemory 16 IoCs

Processes:

tmp.exeExplorer.EXENAPSTAT.EXE

description	pid	process	target process
PID 1936 wrote to memory of 1908	1936	tmp.exe	tmp.exe
PID 1936 wrote to memory of 1908	1936	tmp.exe	tmp.exe
PID 1936 wrote to memory of 1908	1936	tmp.exe	tmp.exe
PID 1936 wrote to memory of 1908	1936	tmp.exe	tmp.exe
PID 1936 wrote to memory of 1908	1936	tmp.exe	tmp.exe
PID 1936 wrote to memory of 1908	1936	tmp.exe	tmp.exe
PID 1936 wrote to memory of 1908	1936	tmp.exe	tmp.exe
PID 1432 wrote to memory of 844	1432	Explorer.EXE	NAPSTAT.EXE
PID 1432 wrote to memory of 844	1432	Explorer.EXE	NAPSTAT.EXE
PID 1432 wrote to memory of 844	1432	Explorer.EXE	NAPSTAT.EXE
PID 1432 wrote to memory of 844	1432	Explorer.EXE	NAPSTAT.EXE
PID 844 wrote to memory of 1556	844	NAPSTAT.EXE	Firefox.exe
PID 844 wrote to memory of 1556	844	NAPSTAT.EXE	Firefox.exe
PID 844 wrote to memory of 1556	844	NAPSTAT.EXE	Firefox.exe
PID 844 wrote to memory of 1556	844	NAPSTAT.EXE	Firefox.exe
PID 844 wrote to memory of 1556	844	NAPSTAT.EXE	Firefox.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1432

C:\Users\Admin\AppData\Local\Temp\tmp.exe
"C:\Users\Admin\AppData\Local\Temp\tmp.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1936

C:\Users\Admin\AppData\Local\Temp\tmp.exe
"C:\Users\Admin\AppData\Local\Temp\tmp.exe"
3⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:1908

C:\Windows\SysWOW64\NAPSTAT.EXE
"C:\Windows\SysWOW64\NAPSTAT.EXE"
2⤵
- Suspicious use of SetThreadContext
- Modifies Internet Explorer settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:844

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:1556

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

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/844-73-0x0000000000080000-0x00000000000AC000-memory.dmp

Filesize
176KB

Download
memory/844-77-0x0000000000080000-0x00000000000AC000-memory.dmp

Filesize
176KB

Download
memory/844-75-0x0000000000670000-0x0000000000700000-memory.dmp

Filesize
576KB

Download
memory/844-74-0x0000000002120000-0x0000000002423000-memory.dmp

Filesize
3.0MB

Download
memory/844-71-0x0000000000000000-mapping.dmp

Download
memory/844-72-0x0000000000620000-0x0000000000666000-memory.dmp

Filesize
280KB

Download
memory/1432-78-0x0000000003F20000-0x0000000003FF5000-memory.dmp

Filesize
852KB

Download
memory/1432-76-0x0000000003F20000-0x0000000003FF5000-memory.dmp

Filesize
852KB

Download
memory/1432-70-0x0000000007180000-0x00000000072F0000-memory.dmp

Filesize
1.4MB

Download
memory/1908-63-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1908-64-0x000000000041F640-mapping.dmp

Download
memory/1908-67-0x0000000000AC0000-0x0000000000DC3000-memory.dmp

Filesize
3.0MB

Download
memory/1908-68-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1908-61-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1908-69-0x0000000000140000-0x0000000000151000-memory.dmp

Filesize
68KB

Download
memory/1908-60-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1936-59-0x00000000009B0000-0x00000000009E2000-memory.dmp

Filesize
200KB

Download
memory/1936-65-0x0000000005015000-0x0000000005026000-memory.dmp

Filesize
68KB

Download
memory/1936-54-0x0000000000EA0000-0x0000000000F82000-memory.dmp

Filesize
904KB

Download
memory/1936-58-0x0000000000D20000-0x0000000000D8A000-memory.dmp

Filesize
424KB

Download
memory/1936-57-0x00000000004D0000-0x00000000004DA000-memory.dmp

Filesize
40KB

Download
memory/1936-56-0x00000000004A0000-0x00000000004B6000-memory.dmp

Filesize
88KB

Download
memory/1936-55-0x00000000768C1000-0x00000000768C3000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads