xloader | 4413a2e6e778cdc5dd839816a62d25e68095be325a28036b45f85716405a2d18

General

Target

tmp.exe
Size

689KB
MD5

8e5764617194a54afd7c5cc130fbeff8
SHA1

fc38d173b4f2421cbdf0547f498bf2658c09a6f3
SHA256

4413a2e6e778cdc5dd839816a62d25e68095be325a28036b45f85716405a2d18
SHA512

2a62802e73aa719882cc748f4f5d75661ed1049a44b715d7d3dea1788b6877af2c913299d1da80f71cb445d460ac01dfa89d040bd3613e07a4940241c4181d0a

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/1784-62-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral1/memory/1784-63-0x000000000041F640-mapping.dmp	xloader
behavioral1/memory/1784-65-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral1/memory/612-71-0x0000000000080000-0x00000000000AC000-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-1-5-21-1083475884-596052423-1669053738-1000\Control Panel\International\Geo\Nation tmp.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Control Panel\International\Geo\Nation	tmp.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

tmp.exetmp.execmmon32.exe

description	pid	process	target process
PID 1460 set thread context of 1784	1460	tmp.exe	tmp.exe
PID 1784 set thread context of 1268	1784	tmp.exe	Explorer.EXE
PID 612 set thread context of 1268	612	cmmon32.exe	Explorer.EXE

Suspicious behavior: EnumeratesProcesses 21 IoCs

Processes:

tmp.exetmp.execmmon32.exe

pid	process
1460	tmp.exe
1784	tmp.exe
1784	tmp.exe
612	cmmon32.exe
612	cmmon32.exe
612	cmmon32.exe
612	cmmon32.exe
612	cmmon32.exe
612	cmmon32.exe
612	cmmon32.exe
612	cmmon32.exe
612	cmmon32.exe
612	cmmon32.exe
612	cmmon32.exe
612	cmmon32.exe
612	cmmon32.exe
612	cmmon32.exe
612	cmmon32.exe
612	cmmon32.exe
612	cmmon32.exe
612	cmmon32.exe

Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

tmp.execmmon32.exe

pid process

1784 tmp.exe
1784 tmp.exe
1784 tmp.exe
612 cmmon32.exe
612 cmmon32.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

tmp.exetmp.execmmon32.exe

description pid process

Token: SeDebugPrivilege 1460 tmp.exe
Token: SeDebugPrivilege 1784 tmp.exe
Token: SeDebugPrivilege 612 cmmon32.exe
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

Explorer.EXE

pid process

1268 Explorer.EXE
1268 Explorer.EXE
Suspicious use of SendNotifyMessage 2 IoCs

Processes:

Explorer.EXE

pid process

1268 Explorer.EXE
1268 Explorer.EXE

pid	process
1784	tmp.exe
1784	tmp.exe
1784	tmp.exe
612	cmmon32.exe
612	cmmon32.exe

description	pid	process
Token: SeDebugPrivilege	1460	tmp.exe
Token: SeDebugPrivilege	1784	tmp.exe
Token: SeDebugPrivilege	612	cmmon32.exe

pid	process
1268	Explorer.EXE
1268	Explorer.EXE

pid	process
1268	Explorer.EXE
1268	Explorer.EXE

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

tmp.exeExplorer.EXE

description	pid	process	target process
PID 1460 wrote to memory of 1716	1460	tmp.exe	tmp.exe
PID 1460 wrote to memory of 1716	1460	tmp.exe	tmp.exe
PID 1460 wrote to memory of 1716	1460	tmp.exe	tmp.exe
PID 1460 wrote to memory of 1716	1460	tmp.exe	tmp.exe
PID 1460 wrote to memory of 1784	1460	tmp.exe	tmp.exe
PID 1460 wrote to memory of 1784	1460	tmp.exe	tmp.exe
PID 1460 wrote to memory of 1784	1460	tmp.exe	tmp.exe
PID 1460 wrote to memory of 1784	1460	tmp.exe	tmp.exe
PID 1460 wrote to memory of 1784	1460	tmp.exe	tmp.exe
PID 1460 wrote to memory of 1784	1460	tmp.exe	tmp.exe
PID 1460 wrote to memory of 1784	1460	tmp.exe	tmp.exe
PID 1268 wrote to memory of 612	1268	Explorer.EXE	cmmon32.exe
PID 1268 wrote to memory of 612	1268	Explorer.EXE	cmmon32.exe
PID 1268 wrote to memory of 612	1268	Explorer.EXE	cmmon32.exe
PID 1268 wrote to memory of 612	1268	Explorer.EXE	cmmon32.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1268

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:1460

C:\Users\Admin\AppData\Local\Temp\tmp.exe
"C:\Users\Admin\AppData\Local\Temp\tmp.exe"
3⤵
PID:1716

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:1784

C:\Windows\SysWOW64\cmmon32.exe
"C:\Windows\SysWOW64\cmmon32.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:612

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/612-69-0x0000000000000000-mapping.dmp

Download
memory/612-70-0x0000000000F30000-0x0000000000F3D000-memory.dmp

Filesize
52KB

Download
memory/612-71-0x0000000000080000-0x00000000000AC000-memory.dmp

Filesize
176KB

Download
memory/612-72-0x0000000000A90000-0x0000000000D93000-memory.dmp

Filesize
3.0MB

Download
memory/612-73-0x0000000000980000-0x0000000000A10000-memory.dmp

Filesize
576KB

Download
memory/1268-75-0x0000000006010000-0x000000000612B000-memory.dmp

Filesize
1.1MB

Download
memory/1268-74-0x0000000006010000-0x000000000612B000-memory.dmp

Filesize
1.1MB

Download
memory/1268-68-0x0000000005F10000-0x000000000600A000-memory.dmp

Filesize
1000KB

Download
memory/1460-54-0x0000000000180000-0x0000000000232000-memory.dmp

Filesize
712KB

Download
memory/1460-58-0x0000000004E40000-0x0000000004EA8000-memory.dmp

Filesize
416KB

Download
memory/1460-57-0x0000000007EA0000-0x0000000007F3C000-memory.dmp

Filesize
624KB

Download
memory/1460-56-0x00000000004B0000-0x00000000004BE000-memory.dmp

Filesize
56KB

Download
memory/1460-55-0x00000000769D1000-0x00000000769D3000-memory.dmp

Filesize
8KB

Download
memory/1784-59-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1784-67-0x0000000000240000-0x0000000000251000-memory.dmp

Filesize
68KB

Download
memory/1784-66-0x0000000000A10000-0x0000000000D13000-memory.dmp

Filesize
3.0MB

Download
memory/1784-65-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1784-63-0x000000000041F640-mapping.dmp

Download
memory/1784-62-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1784-60-0x0000000000400000-0x000000000042C000-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