xloader | 33804adf1254ef1376ce4a0416ff03db837b5bf23a752b8483ffdc1738a5cb59

General

Target

tmp.exe
Size

510KB
MD5

ed110000e4a38ea4c524a777c0b28a38
SHA1

a82ea598a09bf51269131363d2ca1120e45c92aa
SHA256

33804adf1254ef1376ce4a0416ff03db837b5bf23a752b8483ffdc1738a5cb59
SHA512

b771cae1b0e7a25d58dbbdb60a86d39bed08d6c0f97d18b928cb1179dba6911f494b4cec853d169d3113f2a7afa1c3ac45e6fb74f6c6a1fa73978b9209c0de4e

Score

10^/10

xloader wfc6 loader rat suricata

Malware Config

Extracted

Family

xloader

Version

2.9

Campaign

wfc6

Decoy

FPF0BDtsP/0Z3N3EpIfSsQ==

wZbFgKkm5jUpFbB+GQ==

I/oJ0Jcb+eoMqQ==

w7zarxxnPcIgupA=

63SbUimyWalvjfJdRb9U

igCt44uCBYeAugeiTMZW

ZHJ4C8BlAvVDAIRo

XJUEKbSv5SVkKdCoWvkuKiQ=

TDPHixX7VMIgupA=

Xt5NdBkHqXeYgHtS6Lik7Sw=

rJKZiOi3mIr7iH5dEQ==

wbheFmd7+XMkt7KALN8A2NcT+npeUP+g

xqk06+lXAT3bemE847ik7Sw=

YS7SndCMWuCAFbB+GQ==

tJ4lxa1kPUfSZ4UiujZGLCQ=

j8gSmNPGzqe6

iQORUvIx0N1glkfomjmZCzmGPbKE/A==

dlD3cvHVcUBqgNrHpIfSsQ==

Sk9cCV2WvRkavg==

70RVeKQWsgOZMyf+0g0zKyM=

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 6 IoCs

rat

resource	yara_rule
behavioral1/memory/544-66-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral1/memory/544-67-0x000000000041F6F0-mapping.dmp	xloader
behavioral1/memory/544-69-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral1/memory/544-79-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral1/memory/1564-81-0x0000000000080000-0x00000000000AC000-memory.dmp	xloader
behavioral1/memory/1564-85-0x0000000000080000-0x00000000000AC000-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

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

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 1936 set thread context of 544	1936	tmp.exe	31
PID 544 set thread context of 1424	544	tmp.exe	15
PID 544 set thread context of 1424	544	tmp.exe	15
PID 1564 set thread context of 1424	1564	wlanext.exe	15

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Creates scheduled task(s) 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task

T1053

pid	Process
1748	schtasks.exe

Suspicious behavior: EnumeratesProcesses 19 IoCs

pid	Process
544	tmp.exe
544	tmp.exe
1752	powershell.exe
544	tmp.exe
1564	wlanext.exe
1564	wlanext.exe
1564	wlanext.exe
1564	wlanext.exe
1564	wlanext.exe
1564	wlanext.exe
1564	wlanext.exe
1564	wlanext.exe
1564	wlanext.exe
1564	wlanext.exe
1564	wlanext.exe
1564	wlanext.exe
1564	wlanext.exe
1564	wlanext.exe
1564	wlanext.exe

Suspicious behavior: MapViewOfSection 6 IoCs

pid	Process
544	tmp.exe
544	tmp.exe
544	tmp.exe
544	tmp.exe
1564	wlanext.exe
1564	wlanext.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	544	tmp.exe
Token: SeDebugPrivilege	1752	powershell.exe
Token: SeDebugPrivilege	1564	wlanext.exe

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
1424	Explorer.EXE
1424	Explorer.EXE

Suspicious use of SendNotifyMessage 2 IoCs

pid	Process
1424	Explorer.EXE
1424	Explorer.EXE

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 1936 wrote to memory of 1752	1936	tmp.exe	27
PID 1936 wrote to memory of 1752	1936	tmp.exe	27
PID 1936 wrote to memory of 1752	1936	tmp.exe	27
PID 1936 wrote to memory of 1752	1936	tmp.exe	27
PID 1936 wrote to memory of 1748	1936	tmp.exe	29
PID 1936 wrote to memory of 1748	1936	tmp.exe	29
PID 1936 wrote to memory of 1748	1936	tmp.exe	29
PID 1936 wrote to memory of 1748	1936	tmp.exe	29
PID 1936 wrote to memory of 544	1936	tmp.exe	31
PID 1936 wrote to memory of 544	1936	tmp.exe	31
PID 1936 wrote to memory of 544	1936	tmp.exe	31
PID 1936 wrote to memory of 544	1936	tmp.exe	31
PID 1936 wrote to memory of 544	1936	tmp.exe	31
PID 1936 wrote to memory of 544	1936	tmp.exe	31
PID 1936 wrote to memory of 544	1936	tmp.exe	31
PID 1424 wrote to memory of 1564	1424	Explorer.EXE	32
PID 1424 wrote to memory of 1564	1424	Explorer.EXE	32
PID 1424 wrote to memory of 1564	1424	Explorer.EXE	32
PID 1424 wrote to memory of 1564	1424	Explorer.EXE	32

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1424
- 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:1936
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\atfDjSnEZXbNX.exe"
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1752
- - C:\Windows\SysWOW64\schtasks.exe
    "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\atfDjSnEZXbNX" /XML "C:\Users\Admin\AppData\Local\Temp\tmpFB70.tmp"
    3⤵
    - Creates scheduled task(s)
    PID:1748
- - 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:544
- C:\Windows\SysWOW64\wlanext.exe
  "C:\Windows\SysWOW64\wlanext.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  PID:1564

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpFB70.tmp

Filesize
1KB

MD5
93a09e0a93d45ba9cdea8d6daef3b260

SHA1
b5f9684dab3ab9cd8adac61ad560538df167317f

SHA256
ed9505db5baab643ea2bc03886ae57d5bae64bfff2589d44c98d922cd6e2ad76

SHA512
47cc0b5fe7181ee2060a559ae6a11f35dd6cfe08d480f0095e962a7fc703b94f6900e421085e53130397e50797574b4001c432c153a69ab406ef0dc4fc2c58d8

Download Submit
memory/544-79-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/544-66-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/544-72-0x0000000000180000-0x0000000000191000-memory.dmp

Filesize
68KB

Download
memory/544-71-0x0000000000BE0000-0x0000000000EE3000-memory.dmp

Filesize
3.0MB

Download
memory/544-76-0x00000000001D0000-0x00000000001E1000-memory.dmp

Filesize
68KB

Download
memory/544-69-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/544-63-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/544-64-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1424-84-0x0000000006A90000-0x0000000006BA2000-memory.dmp

Filesize
1.1MB

Download
memory/1424-77-0x00000000066A0000-0x00000000067FC000-memory.dmp

Filesize
1.4MB

Download
memory/1424-73-0x0000000004220000-0x00000000042F1000-memory.dmp

Filesize
836KB

Download
memory/1424-86-0x0000000006A90000-0x0000000006BA2000-memory.dmp

Filesize
1.1MB

Download
memory/1564-81-0x0000000000080000-0x00000000000AC000-memory.dmp

Filesize
176KB

Download
memory/1564-85-0x0000000000080000-0x00000000000AC000-memory.dmp

Filesize
176KB

Download
memory/1564-83-0x00000000004C0000-0x0000000000550000-memory.dmp

Filesize
576KB

Download
memory/1564-82-0x0000000000C50000-0x0000000000F53000-memory.dmp

Filesize
3.0MB

Download
memory/1564-80-0x0000000000FB0000-0x0000000000FC6000-memory.dmp

Filesize
88KB

Download
memory/1752-74-0x0000000073170000-0x000000007371B000-memory.dmp

Filesize
5.7MB

Download
memory/1752-70-0x0000000073170000-0x000000007371B000-memory.dmp

Filesize
5.7MB

Download
memory/1936-54-0x0000000000270000-0x00000000002F6000-memory.dmp

Filesize
536KB

Download
memory/1936-62-0x0000000004A70000-0x0000000004AA2000-memory.dmp

Filesize
200KB

Download
memory/1936-56-0x0000000001DC0000-0x0000000001DCE000-memory.dmp

Filesize
56KB

Download
memory/1936-57-0x0000000005040000-0x00000000050AA000-memory.dmp

Filesize
424KB

Download
memory/1936-55-0x0000000074DD1000-0x0000000074DD3000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads