xloader | c9777cb78779de98104f1a01584f9df07e39b7ace7d5e6686d225e7261bd9447

General

Target

gmb.exe
Size

517KB
MD5

a09f93f7606aa64851c9a8f82317b72f
SHA1

c33ea2eb219a088610847905251e5e2c3d2c87a2
SHA256

c9777cb78779de98104f1a01584f9df07e39b7ace7d5e6686d225e7261bd9447
SHA512

c5923ec47cc02a048fbbe8876c6f982d56dd6ea8936848db5a51ec6ad8ce16df9271a00c187a9ea653beaa490ba769c1339a5c3384180ba4d3961c471b7dfd59

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/1612-63-0x000000000041F640-mapping.dmp	xloader
behavioral1/memory/1612-62-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral1/memory/1612-69-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral1/memory/584-71-0x0000000000080000-0x00000000000AC000-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:

gmb.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Control Panel\International\Geo\Nation gmb.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Control Panel\International\Geo\Nation	gmb.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

gmb.exegmb.execmmon32.exe

description	pid	process	target process
PID 1308 set thread context of 1612	1308	gmb.exe	gmb.exe
PID 1612 set thread context of 1396	1612	gmb.exe	Explorer.EXE
PID 584 set thread context of 1396	584	cmmon32.exe	Explorer.EXE

Suspicious behavior: EnumeratesProcesses 8 IoCs

Processes:

gmb.exegmb.execmmon32.exe

pid process

1308 gmb.exe
1612 gmb.exe
1612 gmb.exe
584 cmmon32.exe
584 cmmon32.exe
584 cmmon32.exe
584 cmmon32.exe
584 cmmon32.exe
Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

gmb.execmmon32.exe

pid process

1612 gmb.exe
1612 gmb.exe
1612 gmb.exe
584 cmmon32.exe
584 cmmon32.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

gmb.exegmb.execmmon32.exe

description pid process

Token: SeDebugPrivilege 1308 gmb.exe
Token: SeDebugPrivilege 1612 gmb.exe
Token: SeDebugPrivilege 584 cmmon32.exe
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

Explorer.EXE

pid process

1396 Explorer.EXE
1396 Explorer.EXE
Suspicious use of SendNotifyMessage 2 IoCs

Processes:

Explorer.EXE

pid process

1396 Explorer.EXE
1396 Explorer.EXE

pid	process
1308	gmb.exe
1612	gmb.exe
1612	gmb.exe
584	cmmon32.exe
584	cmmon32.exe
584	cmmon32.exe
584	cmmon32.exe
584	cmmon32.exe

pid	process
1612	gmb.exe
1612	gmb.exe
1612	gmb.exe
584	cmmon32.exe
584	cmmon32.exe

description	pid	process
Token: SeDebugPrivilege	1308	gmb.exe
Token: SeDebugPrivilege	1612	gmb.exe
Token: SeDebugPrivilege	584	cmmon32.exe

pid	process
1396	Explorer.EXE
1396	Explorer.EXE

pid	process
1396	Explorer.EXE
1396	Explorer.EXE

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

gmb.exeExplorer.EXE

description	pid	process	target process
PID 1308 wrote to memory of 1536	1308	gmb.exe	gmb.exe
PID 1308 wrote to memory of 1536	1308	gmb.exe	gmb.exe
PID 1308 wrote to memory of 1536	1308	gmb.exe	gmb.exe
PID 1308 wrote to memory of 1536	1308	gmb.exe	gmb.exe
PID 1308 wrote to memory of 1612	1308	gmb.exe	gmb.exe
PID 1308 wrote to memory of 1612	1308	gmb.exe	gmb.exe
PID 1308 wrote to memory of 1612	1308	gmb.exe	gmb.exe
PID 1308 wrote to memory of 1612	1308	gmb.exe	gmb.exe
PID 1308 wrote to memory of 1612	1308	gmb.exe	gmb.exe
PID 1308 wrote to memory of 1612	1308	gmb.exe	gmb.exe
PID 1308 wrote to memory of 1612	1308	gmb.exe	gmb.exe
PID 1396 wrote to memory of 584	1396	Explorer.EXE	cmmon32.exe
PID 1396 wrote to memory of 584	1396	Explorer.EXE	cmmon32.exe
PID 1396 wrote to memory of 584	1396	Explorer.EXE	cmmon32.exe
PID 1396 wrote to memory of 584	1396	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:1396

C:\Users\Admin\AppData\Local\Temp\gmb.exe
"C:\Users\Admin\AppData\Local\Temp\gmb.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1308

C:\Users\Admin\AppData\Local\Temp\gmb.exe
"C:\Users\Admin\AppData\Local\Temp\gmb.exe"
3⤵
PID:1536

C:\Users\Admin\AppData\Local\Temp\gmb.exe
"C:\Users\Admin\AppData\Local\Temp\gmb.exe"
3⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:1612

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:584

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/584-73-0x0000000000480000-0x0000000000510000-memory.dmp

Filesize
576KB

Download
memory/584-68-0x0000000000000000-mapping.dmp

Download
memory/584-71-0x0000000000080000-0x00000000000AC000-memory.dmp

Filesize
176KB

Download
memory/584-70-0x0000000000F30000-0x0000000000F3D000-memory.dmp

Filesize
52KB

Download
memory/584-72-0x0000000000AE0000-0x0000000000DE3000-memory.dmp

Filesize
3.0MB

Download
memory/1308-57-0x0000000007220000-0x000000000728A000-memory.dmp

Filesize
424KB

Download
memory/1308-54-0x0000000000D40000-0x0000000000DC8000-memory.dmp

Filesize
544KB

Download
memory/1308-58-0x0000000000590000-0x00000000005C2000-memory.dmp

Filesize
200KB

Download
memory/1308-56-0x00000000002A0000-0x00000000002AE000-memory.dmp

Filesize
56KB

Download
memory/1308-55-0x0000000075261000-0x0000000075263000-memory.dmp

Filesize
8KB

Download
memory/1396-75-0x00000000072B0000-0x0000000007420000-memory.dmp

Filesize
1.4MB

Download
memory/1396-74-0x00000000072B0000-0x0000000007420000-memory.dmp

Filesize
1.4MB

Download
memory/1396-67-0x0000000007110000-0x00000000072A4000-memory.dmp

Filesize
1.6MB

Download
memory/1612-59-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1612-69-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1612-66-0x0000000000270000-0x0000000000281000-memory.dmp

Filesize
68KB

Download
memory/1612-65-0x0000000000DD0000-0x00000000010D3000-memory.dmp

Filesize
3.0MB

Download
memory/1612-62-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1612-63-0x000000000041F640-mapping.dmp

Download
memory/1612-60-0x0000000000400000-0x000000000042C000-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