xloader | 0cfac9ebd9e0bb5a2f128f38b9879e4f103208c8559a68a18bb099fa2b8bf18e

General

Target

tmp.exe
Size

635KB
MD5

e32e254b685cd1709f4ef86b5441d84e
SHA1

55d4645e42f4104229ced1fff95532ee7bd6632a
SHA256

0cfac9ebd9e0bb5a2f128f38b9879e4f103208c8559a68a18bb099fa2b8bf18e
SHA512

4e01d48e6827da547c27b3f6063ec87537d98532b7a2c81e37a8531abe664a3c5bef2629292be1c12c7da8a1a0a100f64b007869c34e3951026fa2f9af25419d

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/1688-64-0x000000000041F640-mapping.dmp	xloader
behavioral1/memory/1688-63-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral1/memory/1688-66-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral1/memory/1204-72-0x00000000000C0000-0x00000000000EC000-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-1-5-21-1819626980-2277161760-1023733287-1000\Control Panel\International\Geo\Nation tmp.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Control Panel\International\Geo\Nation	tmp.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

tmp.exetmp.exehelp.exe

description	pid	process	target process
PID 1600 set thread context of 1688	1600	tmp.exe	tmp.exe
PID 1688 set thread context of 1280	1688	tmp.exe	Explorer.EXE
PID 1204 set thread context of 1280	1204	help.exe	Explorer.EXE

Suspicious behavior: EnumeratesProcesses 23 IoCs

Processes:

tmp.exehelp.exe

pid	process
1688	tmp.exe
1688	tmp.exe
1204	help.exe
1204	help.exe
1204	help.exe
1204	help.exe
1204	help.exe
1204	help.exe
1204	help.exe
1204	help.exe
1204	help.exe
1204	help.exe
1204	help.exe
1204	help.exe
1204	help.exe
1204	help.exe
1204	help.exe
1204	help.exe
1204	help.exe
1204	help.exe
1204	help.exe
1204	help.exe
1204	help.exe

Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

tmp.exehelp.exe

pid process

1688 tmp.exe
1688 tmp.exe
1688 tmp.exe
1204 help.exe
1204 help.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

tmp.exehelp.exe

description pid process

Token: SeDebugPrivilege 1688 tmp.exe
Token: SeDebugPrivilege 1204 help.exe
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

Explorer.EXE

pid process

1280 Explorer.EXE
1280 Explorer.EXE
Suspicious use of SendNotifyMessage 2 IoCs

Processes:

Explorer.EXE

pid process

1280 Explorer.EXE
1280 Explorer.EXE

description	pid	process
Token: SeDebugPrivilege	1688	tmp.exe
Token: SeDebugPrivilege	1204	help.exe

pid	process
1280	Explorer.EXE
1280	Explorer.EXE

pid	process
1280	Explorer.EXE
1280	Explorer.EXE

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

tmp.exeExplorer.EXE

description	pid	process	target process
PID 1600 wrote to memory of 1688	1600	tmp.exe	tmp.exe
PID 1600 wrote to memory of 1688	1600	tmp.exe	tmp.exe
PID 1600 wrote to memory of 1688	1600	tmp.exe	tmp.exe
PID 1600 wrote to memory of 1688	1600	tmp.exe	tmp.exe
PID 1600 wrote to memory of 1688	1600	tmp.exe	tmp.exe
PID 1600 wrote to memory of 1688	1600	tmp.exe	tmp.exe
PID 1600 wrote to memory of 1688	1600	tmp.exe	tmp.exe
PID 1280 wrote to memory of 1204	1280	Explorer.EXE	help.exe
PID 1280 wrote to memory of 1204	1280	Explorer.EXE	help.exe
PID 1280 wrote to memory of 1204	1280	Explorer.EXE	help.exe
PID 1280 wrote to memory of 1204	1280	Explorer.EXE	help.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1280

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:1600

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:1688

C:\Windows\SysWOW64\help.exe
"C:\Windows\SysWOW64\help.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:1204

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

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Downloads

memory/1204-74-0x0000000000A00000-0x0000000000A90000-memory.dmp

Filesize
576KB

Download
memory/1204-73-0x00000000006F0000-0x00000000009F3000-memory.dmp

Filesize
3.0MB

Download
memory/1204-72-0x00000000000C0000-0x00000000000EC000-memory.dmp

Filesize
176KB

Download
memory/1204-71-0x0000000000EC0000-0x0000000000EC6000-memory.dmp

Filesize
24KB

Download
memory/1204-70-0x0000000000000000-mapping.dmp

Download
memory/1280-69-0x0000000005110000-0x000000000520D000-memory.dmp

Filesize
1012KB

Download
memory/1280-76-0x0000000006A20000-0x0000000006B4F000-memory.dmp

Filesize
1.2MB

Download
memory/1280-75-0x0000000006A20000-0x0000000006B4F000-memory.dmp

Filesize
1.2MB

Download
memory/1600-59-0x0000000000DD0000-0x0000000000E02000-memory.dmp

Filesize
200KB

Download
memory/1600-54-0x0000000000E20000-0x0000000000EC6000-memory.dmp

Filesize
664KB

Download
memory/1600-58-0x0000000006D00000-0x0000000006D6A000-memory.dmp

Filesize
424KB

Download
memory/1600-57-0x0000000000480000-0x000000000048A000-memory.dmp

Filesize
40KB

Download
memory/1600-56-0x0000000000470000-0x0000000000486000-memory.dmp

Filesize
88KB

Download
memory/1600-55-0x0000000075CD1000-0x0000000075CD3000-memory.dmp

Filesize
8KB

Download
memory/1688-63-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1688-66-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1688-67-0x0000000000800000-0x0000000000B03000-memory.dmp

Filesize
3.0MB

Download
memory/1688-68-0x00000000001F0000-0x0000000000201000-memory.dmp

Filesize
68KB

Download
memory/1688-64-0x000000000041F640-mapping.dmp

Download
memory/1688-61-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1688-60-0x0000000000400000-0x000000000042C000-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