xloader | 1d9fc02237d06ae3ee5ea85ae14a05ab41ee99f03ac660e3f6360ac6864bf7fd

General

Target

tmp.exe
Size

641KB
MD5

85be6547409011c0804230f2f09f7ca3
SHA1

33eb9c66bb959332f963ab928fdbd655ac9e5e4e
SHA256

1d9fc02237d06ae3ee5ea85ae14a05ab41ee99f03ac660e3f6360ac6864bf7fd
SHA512

5e9e790f043d47bf21cd77caa556d18b957ab2c9587ef63836f84b8f42b102a8de085a2c6c2cf5a504b5a034c74dc25f2961b8415779311323e71c15b4432b7b

Score

10^/10

xloader nn40 loader rat spyware stealer 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 3 IoCs

rat

Processes:

resource	yara_rule
behavioral2/memory/4812-137-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral2/memory/4812-143-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral2/memory/3188-145-0x0000000000AD0000-0x0000000000AFC000-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-1-5-21-2632097139-1792035885-811742494-1000\Control Panel\International\Geo\Nation tmp.exe
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Control Panel\International\Geo\Nation	tmp.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

tmp.exetmp.exechkdsk.exe

description	pid	process	target process
PID 3584 set thread context of 4812	3584	tmp.exe	tmp.exe
PID 4812 set thread context of 796	4812	tmp.exe	Explorer.EXE
PID 3188 set thread context of 796	3188	chkdsk.exe	Explorer.EXE

Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry
T1012

System Information Discovery
T1082

Processes:

chkdsk.exe

description ioc process

Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier chkdsk.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	chkdsk.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

chkdsk.exe

description	ioc	process
Key created	\Registry\User\S-1-5-21-2632097139-1792035885-811742494-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	chkdsk.exe

Suspicious behavior: EnumeratesProcesses 52 IoCs

Processes:

tmp.exetmp.exechkdsk.exe

pid	process
3584	tmp.exe
3584	tmp.exe
4812	tmp.exe
4812	tmp.exe
4812	tmp.exe
4812	tmp.exe
3188	chkdsk.exe
3188	chkdsk.exe
3188	chkdsk.exe
3188	chkdsk.exe
3188	chkdsk.exe
3188	chkdsk.exe
3188	chkdsk.exe
3188	chkdsk.exe
3188	chkdsk.exe
3188	chkdsk.exe
3188	chkdsk.exe
3188	chkdsk.exe
3188	chkdsk.exe
3188	chkdsk.exe
3188	chkdsk.exe
3188	chkdsk.exe
3188	chkdsk.exe
3188	chkdsk.exe
3188	chkdsk.exe
3188	chkdsk.exe
3188	chkdsk.exe
3188	chkdsk.exe
3188	chkdsk.exe
3188	chkdsk.exe
3188	chkdsk.exe
3188	chkdsk.exe
3188	chkdsk.exe
3188	chkdsk.exe
3188	chkdsk.exe
3188	chkdsk.exe
3188	chkdsk.exe
3188	chkdsk.exe
3188	chkdsk.exe
3188	chkdsk.exe
3188	chkdsk.exe
3188	chkdsk.exe
3188	chkdsk.exe
3188	chkdsk.exe
3188	chkdsk.exe
3188	chkdsk.exe
3188	chkdsk.exe
3188	chkdsk.exe
3188	chkdsk.exe
3188	chkdsk.exe
3188	chkdsk.exe
3188	chkdsk.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

796 Explorer.EXE
Suspicious behavior: MapViewOfSection 7 IoCs

Processes:

tmp.exechkdsk.exe

pid process

4812 tmp.exe
4812 tmp.exe
4812 tmp.exe
3188 chkdsk.exe
3188 chkdsk.exe
3188 chkdsk.exe
3188 chkdsk.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

tmp.exetmp.exechkdsk.exe

description pid process

Token: SeDebugPrivilege 3584 tmp.exe
Token: SeDebugPrivilege 4812 tmp.exe
Token: SeDebugPrivilege 3188 chkdsk.exe

pid	process
796	Explorer.EXE

pid	process
4812	tmp.exe
4812	tmp.exe
4812	tmp.exe
3188	chkdsk.exe
3188	chkdsk.exe
3188	chkdsk.exe
3188	chkdsk.exe

description	pid	process
Token: SeDebugPrivilege	3584	tmp.exe
Token: SeDebugPrivilege	4812	tmp.exe
Token: SeDebugPrivilege	3188	chkdsk.exe

Suspicious use of WriteProcessMemory 21 IoCs

Processes:

tmp.exeExplorer.EXEchkdsk.exe

description	pid	process	target process
PID 3584 wrote to memory of 4580	3584	tmp.exe	tmp.exe
PID 3584 wrote to memory of 4580	3584	tmp.exe	tmp.exe
PID 3584 wrote to memory of 4580	3584	tmp.exe	tmp.exe
PID 3584 wrote to memory of 4812	3584	tmp.exe	tmp.exe
PID 3584 wrote to memory of 4812	3584	tmp.exe	tmp.exe
PID 3584 wrote to memory of 4812	3584	tmp.exe	tmp.exe
PID 3584 wrote to memory of 4812	3584	tmp.exe	tmp.exe
PID 3584 wrote to memory of 4812	3584	tmp.exe	tmp.exe
PID 3584 wrote to memory of 4812	3584	tmp.exe	tmp.exe
PID 796 wrote to memory of 3188	796	Explorer.EXE	chkdsk.exe
PID 796 wrote to memory of 3188	796	Explorer.EXE	chkdsk.exe
PID 796 wrote to memory of 3188	796	Explorer.EXE	chkdsk.exe
PID 3188 wrote to memory of 4452	3188	chkdsk.exe	cmd.exe
PID 3188 wrote to memory of 4452	3188	chkdsk.exe	cmd.exe
PID 3188 wrote to memory of 4452	3188	chkdsk.exe	cmd.exe
PID 3188 wrote to memory of 3440	3188	chkdsk.exe	cmd.exe
PID 3188 wrote to memory of 3440	3188	chkdsk.exe	cmd.exe
PID 3188 wrote to memory of 3440	3188	chkdsk.exe	cmd.exe
PID 3188 wrote to memory of 1648	3188	chkdsk.exe	Firefox.exe
PID 3188 wrote to memory of 1648	3188	chkdsk.exe	Firefox.exe
PID 3188 wrote to memory of 1648	3188	chkdsk.exe	Firefox.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:796

C:\Users\Admin\AppData\Local\Temp\tmp.exe
"C:\Users\Admin\AppData\Local\Temp\tmp.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3584

C:\Users\Admin\AppData\Local\Temp\tmp.exe
"C:\Users\Admin\AppData\Local\Temp\tmp.exe"
3⤵
PID:4580

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:4812

C:\Windows\SysWOW64\chkdsk.exe
"C:\Windows\SysWOW64\chkdsk.exe"
2⤵
- Suspicious use of SetThreadContext
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3188

C:\Windows\SysWOW64\cmd.exe
/c copy "C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Login Data" "C:\Users\Admin\AppData\Local\Temp\DB1" /V
3⤵
PID:4452

C:\Windows\SysWOW64\cmd.exe
/c copy "C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Login Data" "C:\Users\Admin\AppData\Local\Temp\DB1" /V
3⤵
PID:3440

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:1648

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Credentials in Files

1

T1081

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Data from Local System

1

T1005

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\DB1
Filesize
40KB

MD5
b608d407fc15adea97c26936bc6f03f6

SHA1
953e7420801c76393902c0d6bb56148947e41571

SHA256
b281ce54125d4250a80f48fcc02a8eea53f2c35c3b726e2512c3d493da0013bf

SHA512
cc96ddf4bf90d6aaa9d86803cb2aa30cd8e9b295aee1bd5544b88aeab63dc60bb1d4641e846c9771bab51aabbfbcd984c6d3ee83b96f5b65d09c0841d464b9e4

Download Submit
C:\Users\Admin\AppData\Local\Temp\DB1
Filesize
48KB

MD5
349e6eb110e34a08924d92f6b334801d

SHA1
bdfb289daff51890cc71697b6322aa4b35ec9169

SHA256
c9fd7be4579e4aa942e8c2b44ab10115fa6c2fe6afd0c584865413d9d53f3b2a

SHA512
2a635b815a5e117ea181ee79305ee1baf591459427acc5210d8c6c7e447be3513ead871c605eb3d32e4ab4111b2a335f26520d0ef8c1245a4af44e1faec44574

Download Submit
memory/796-141-0x0000000002BB0000-0x0000000002CAE000-memory.dmp

Filesize
1016KB

Download
memory/796-149-0x0000000008780000-0x0000000008819000-memory.dmp

Filesize
612KB

Download
memory/796-148-0x0000000008780000-0x0000000008819000-memory.dmp

Filesize
612KB

Download
memory/3188-145-0x0000000000AD0000-0x0000000000AFC000-memory.dmp

Filesize
176KB

Download
memory/3188-142-0x0000000000000000-mapping.dmp

Download
memory/3188-147-0x0000000001140000-0x00000000011D0000-memory.dmp

Filesize
576KB

Download
memory/3188-146-0x00000000013F0000-0x000000000173A000-memory.dmp

Filesize
3.3MB

Download
memory/3188-144-0x0000000000330000-0x000000000033A000-memory.dmp

Filesize
40KB

Download
memory/3440-152-0x0000000000000000-mapping.dmp

Download
memory/3584-133-0x0000000005790000-0x000000000579A000-memory.dmp

Filesize
40KB

Download
memory/3584-130-0x0000000000D40000-0x0000000000DE6000-memory.dmp

Filesize
664KB

Download
memory/3584-134-0x00000000091B0000-0x000000000924C000-memory.dmp

Filesize
624KB

Download
memory/3584-132-0x00000000057C0000-0x0000000005852000-memory.dmp

Filesize
584KB

Download
memory/3584-131-0x0000000005EC0000-0x0000000006464000-memory.dmp

Filesize
5.6MB

Download
memory/4452-150-0x0000000000000000-mapping.dmp

Download
memory/4580-135-0x0000000000000000-mapping.dmp

Download
memory/4812-143-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/4812-140-0x0000000000C70000-0x0000000000C81000-memory.dmp

Filesize
68KB

Download
memory/4812-139-0x00000000011E0000-0x000000000152A000-memory.dmp

Filesize
3.3MB

Download
memory/4812-136-0x0000000000000000-mapping.dmp

Download
memory/4812-137-0x0000000000400000-0x000000000042C000-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