xloader | 1d9fc02237d06ae3ee5ea85ae14a05ab41ee99f03ac660e3f6360ac6864bf7fd

General

Target

tmp.exe
Size

641KB
MD5

85be6547409011c0804230f2f09f7ca3
SHA1

33eb9c66bb959332f963ab928fdbd655ac9e5e4e
SHA256

1d9fc02237d06ae3ee5ea85ae14a05ab41ee99f03ac660e3f6360ac6864bf7fd
SHA512

5e9e790f043d47bf21cd77caa556d18b957ab2c9587ef63836f84b8f42b102a8de085a2c6c2cf5a504b5a034c74dc25f2961b8415779311323e71c15b4432b7b

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 4 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/1948-63-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral1/memory/1948-64-0x000000000041F640-mapping.dmp	xloader
behavioral1/memory/1948-70-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral1/memory/1480-73-0x0000000000080000-0x00000000000AC000-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-1-5-21-3440072777-2118400376-1759599358-1000\Control Panel\International\Geo\Nation tmp.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3440072777-2118400376-1759599358-1000\Control Panel\International\Geo\Nation	tmp.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

tmp.exetmp.exeraserver.exe

description	pid	process	target process
PID 1164 set thread context of 1948	1164	tmp.exe	tmp.exe
PID 1948 set thread context of 1408	1948	tmp.exe	Explorer.EXE
PID 1480 set thread context of 1408	1480	raserver.exe	Explorer.EXE

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

raserver.exe

description	ioc	process
Key created	\Registry\User\S-1-5-21-3440072777-2118400376-1759599358-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	raserver.exe

Suspicious behavior: EnumeratesProcesses 22 IoCs

Processes:

tmp.exeraserver.exe

pid	process
1948	tmp.exe
1948	tmp.exe
1480	raserver.exe
1480	raserver.exe
1480	raserver.exe
1480	raserver.exe
1480	raserver.exe
1480	raserver.exe
1480	raserver.exe
1480	raserver.exe
1480	raserver.exe
1480	raserver.exe
1480	raserver.exe
1480	raserver.exe
1480	raserver.exe
1480	raserver.exe
1480	raserver.exe
1480	raserver.exe
1480	raserver.exe
1480	raserver.exe
1480	raserver.exe
1480	raserver.exe

Suspicious behavior: MapViewOfSection 7 IoCs

Processes:

tmp.exeraserver.exe

pid process

1948 tmp.exe
1948 tmp.exe
1948 tmp.exe
1480 raserver.exe
1480 raserver.exe
1480 raserver.exe
1480 raserver.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

tmp.exeraserver.exe

description pid process

Token: SeDebugPrivilege 1948 tmp.exe
Token: SeDebugPrivilege 1480 raserver.exe
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

Explorer.EXE

pid process

1408 Explorer.EXE
1408 Explorer.EXE
Suspicious use of SendNotifyMessage 2 IoCs

Processes:

Explorer.EXE

pid process

1408 Explorer.EXE
1408 Explorer.EXE

description	pid	process
Token: SeDebugPrivilege	1948	tmp.exe
Token: SeDebugPrivilege	1480	raserver.exe

pid	process
1408	Explorer.EXE
1408	Explorer.EXE

pid	process
1408	Explorer.EXE
1408	Explorer.EXE

Suspicious use of WriteProcessMemory 16 IoCs

Processes:

tmp.exeExplorer.EXEraserver.exe

description	pid	process	target process
PID 1164 wrote to memory of 1948	1164	tmp.exe	tmp.exe
PID 1164 wrote to memory of 1948	1164	tmp.exe	tmp.exe
PID 1164 wrote to memory of 1948	1164	tmp.exe	tmp.exe
PID 1164 wrote to memory of 1948	1164	tmp.exe	tmp.exe
PID 1164 wrote to memory of 1948	1164	tmp.exe	tmp.exe
PID 1164 wrote to memory of 1948	1164	tmp.exe	tmp.exe
PID 1164 wrote to memory of 1948	1164	tmp.exe	tmp.exe
PID 1408 wrote to memory of 1480	1408	Explorer.EXE	raserver.exe
PID 1408 wrote to memory of 1480	1408	Explorer.EXE	raserver.exe
PID 1408 wrote to memory of 1480	1408	Explorer.EXE	raserver.exe
PID 1408 wrote to memory of 1480	1408	Explorer.EXE	raserver.exe
PID 1480 wrote to memory of 364	1480	raserver.exe	Firefox.exe
PID 1480 wrote to memory of 364	1480	raserver.exe	Firefox.exe
PID 1480 wrote to memory of 364	1480	raserver.exe	Firefox.exe
PID 1480 wrote to memory of 364	1480	raserver.exe	Firefox.exe
PID 1480 wrote to memory of 364	1480	raserver.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:1408

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:1164

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:1948

C:\Windows\SysWOW64\raserver.exe
"C:\Windows\SysWOW64\raserver.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:1480

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:364

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/1164-55-0x0000000076021000-0x0000000076023000-memory.dmp

Filesize
8KB

Download
memory/1164-56-0x0000000000430000-0x000000000044C000-memory.dmp

Filesize
112KB

Download
memory/1164-57-0x0000000000460000-0x000000000046A000-memory.dmp

Filesize
40KB

Download
memory/1164-58-0x0000000005020000-0x000000000508A000-memory.dmp

Filesize
424KB

Download
memory/1164-59-0x00000000006A0000-0x00000000006D2000-memory.dmp

Filesize
200KB

Download
memory/1164-54-0x0000000000D70000-0x0000000000E16000-memory.dmp

Filesize
664KB

Download
memory/1408-68-0x0000000006DF0000-0x0000000006F61000-memory.dmp

Filesize
1.4MB

Download
memory/1408-77-0x00000000063E0000-0x00000000064E9000-memory.dmp

Filesize
1.0MB

Download
memory/1408-76-0x00000000063E0000-0x00000000064E9000-memory.dmp

Filesize
1.0MB

Download
memory/1480-72-0x0000000000950000-0x000000000096C000-memory.dmp

Filesize
112KB

Download
memory/1480-69-0x0000000000000000-mapping.dmp

Download
memory/1480-73-0x0000000000080000-0x00000000000AC000-memory.dmp

Filesize
176KB

Download
memory/1480-74-0x0000000001F00000-0x0000000002203000-memory.dmp

Filesize
3.0MB

Download
memory/1480-75-0x0000000001D70000-0x0000000001E00000-memory.dmp

Filesize
576KB

Download
memory/1948-65-0x00000000009C0000-0x0000000000CC3000-memory.dmp

Filesize
3.0MB

Download
memory/1948-67-0x0000000000130000-0x0000000000141000-memory.dmp

Filesize
68KB

Download
memory/1948-64-0x000000000041F640-mapping.dmp

Download
memory/1948-70-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1948-63-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1948-61-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1948-60-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads