xloader | 8261a237ce6bd2bfae4c46b2e8a338b00ea9047f1fa6c5cc9ac1e6d00f0a3a06

General

Target

tmp.exe
Size

502KB
MD5

6237a36be522069ff7f84128c2cbb5c4
SHA1

2c57d875e90ef11903529ec81862aa01e8945129
SHA256

8261a237ce6bd2bfae4c46b2e8a338b00ea9047f1fa6c5cc9ac1e6d00f0a3a06
SHA512

c36ae59fca8d0345b1ccf19838894ca2103cab1222c2e2f00f56e57d26d50cbeda24034e5dba05bd2d7cb533997b2235a4adddc992d5069938287d1bbad0855e

Score

10^/10

xloader iewb loader rat suricata

Malware Config

Extracted

Family

xloader

Version

2.9

Campaign

iewb

Decoy

n8FLlgIlb1rSEg5hJ9xMbw4hcmR38Q==

5vIAIY+pt81OtWs+FdIEdk7Y

LHIKc+oWGIQUUlfAAtEEdk7Y

ePM/cX2jvHrS

5hvPEw22+fdvmJz3C8FIVq0=

mb9EeX2jvHrS

Dx2zIYNvfjo8VUo5

6jVPnyJekv2RAc4gLKNwEqQ=

KWatHyjdE5Gj1Ng=

t9lk70gzUAZty4qjbVjF

6eUBeFPzKBWT125BFNIEdk7Y

dZUXOIyqTJGj1Ng=

iL3TVh2Jl5QVStnzxcAhIL8=

J1prtyklUfZGR/xDD71IbkWRd2yx

s9FgCOBRW9bU0Y6jbVjF

RYCbQDzcFBhcylgu

Fl0BV/8RJm6F9QRg8LXXTLo=

0dhumHzrCCZ3wdQg7nFF1AlL6Tk=

xvL+iL6wwX+/wH9K4lbZ/A==

N0lVceIFD5Gj1Ng=

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 5 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/592-63-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral1/memory/592-64-0x000000000041F840-mapping.dmp	xloader
behavioral1/memory/592-66-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral1/memory/1588-74-0x0000000000080000-0x00000000000AC000-memory.dmp	xloader
behavioral1/memory/1588-78-0x0000000000080000-0x00000000000AC000-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-1-5-21-790309383-526510583-3802439154-1000\Control Panel\International\Geo\Nation tmp.exe
Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

1980 cmd.exe

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

pid	process
1980	cmd.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

tmp.exetmp.execontrol.exe

description	pid	process	target process
PID 1892 set thread context of 592	1892	tmp.exe	tmp.exe
PID 592 set thread context of 1204	592	tmp.exe	Explorer.EXE
PID 1588 set thread context of 1204	1588	control.exe	Explorer.EXE

Suspicious behavior: EnumeratesProcesses 20 IoCs

Processes:

tmp.execontrol.exe

pid	process
592	tmp.exe
592	tmp.exe
1588	control.exe
1588	control.exe
1588	control.exe
1588	control.exe
1588	control.exe
1588	control.exe
1588	control.exe
1588	control.exe
1588	control.exe
1588	control.exe
1588	control.exe
1588	control.exe
1588	control.exe
1588	control.exe
1588	control.exe
1588	control.exe
1588	control.exe
1588	control.exe

Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

tmp.execontrol.exe

pid process

592 tmp.exe
592 tmp.exe
592 tmp.exe
1588 control.exe
1588 control.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

tmp.execontrol.exe

description pid process

Token: SeDebugPrivilege 592 tmp.exe
Token: SeDebugPrivilege 1588 control.exe
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

Explorer.EXE

pid process

1204 Explorer.EXE
1204 Explorer.EXE
Suspicious use of SendNotifyMessage 2 IoCs

Processes:

Explorer.EXE

pid process

1204 Explorer.EXE
1204 Explorer.EXE

description	pid	process
Token: SeDebugPrivilege	592	tmp.exe
Token: SeDebugPrivilege	1588	control.exe

pid	process
1204	Explorer.EXE
1204	Explorer.EXE

pid	process
1204	Explorer.EXE
1204	Explorer.EXE

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

tmp.exeExplorer.EXEcontrol.exe

description	pid	process	target process
PID 1892 wrote to memory of 592	1892	tmp.exe	tmp.exe
PID 1892 wrote to memory of 592	1892	tmp.exe	tmp.exe
PID 1892 wrote to memory of 592	1892	tmp.exe	tmp.exe
PID 1892 wrote to memory of 592	1892	tmp.exe	tmp.exe
PID 1892 wrote to memory of 592	1892	tmp.exe	tmp.exe
PID 1892 wrote to memory of 592	1892	tmp.exe	tmp.exe
PID 1892 wrote to memory of 592	1892	tmp.exe	tmp.exe
PID 1204 wrote to memory of 1588	1204	Explorer.EXE	control.exe
PID 1204 wrote to memory of 1588	1204	Explorer.EXE	control.exe
PID 1204 wrote to memory of 1588	1204	Explorer.EXE	control.exe
PID 1204 wrote to memory of 1588	1204	Explorer.EXE	control.exe
PID 1588 wrote to memory of 1980	1588	control.exe	cmd.exe
PID 1588 wrote to memory of 1980	1588	control.exe	cmd.exe
PID 1588 wrote to memory of 1980	1588	control.exe	cmd.exe
PID 1588 wrote to memory of 1980	1588	control.exe	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1204

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:1892

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:592

C:\Windows\SysWOW64\control.exe
"C:\Windows\SysWOW64\control.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1588

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\tmp.exe"
3⤵
- Deletes itself
PID:1980

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

Replay Monitor

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Downloads

memory/592-68-0x00000000001B0000-0x00000000001C1000-memory.dmp

Filesize
68KB

Download
memory/592-61-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/592-67-0x0000000000890000-0x0000000000B93000-memory.dmp

Filesize
3.0MB

Download
memory/592-66-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/592-64-0x000000000041F840-mapping.dmp

Download
memory/592-60-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/592-63-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1204-79-0x00000000061F0000-0x000000000631A000-memory.dmp

Filesize
1.2MB

Download
memory/1204-77-0x00000000061F0000-0x000000000631A000-memory.dmp

Filesize
1.2MB

Download
memory/1204-69-0x0000000006080000-0x00000000061E9000-memory.dmp

Filesize
1.4MB

Download
memory/1588-76-0x0000000000520000-0x00000000005B0000-memory.dmp

Filesize
576KB

Download
memory/1588-75-0x00000000021A0000-0x00000000024A3000-memory.dmp

Filesize
3.0MB

Download
memory/1588-78-0x0000000000080000-0x00000000000AC000-memory.dmp

Filesize
176KB

Download
memory/1588-73-0x0000000000470000-0x000000000048F000-memory.dmp

Filesize
124KB

Download
memory/1588-70-0x0000000000000000-mapping.dmp

Download
memory/1588-74-0x0000000000080000-0x00000000000AC000-memory.dmp

Filesize
176KB

Download
memory/1892-59-0x0000000000AA0000-0x0000000000AD2000-memory.dmp

Filesize
200KB

Download
memory/1892-54-0x0000000000D10000-0x0000000000D94000-memory.dmp

Filesize
528KB

Download
memory/1892-58-0x0000000005B20000-0x0000000005B8A000-memory.dmp

Filesize
424KB

Download
memory/1892-57-0x00000000005A0000-0x00000000005AA000-memory.dmp

Filesize
40KB

Download
memory/1892-56-0x0000000000570000-0x000000000058C000-memory.dmp

Filesize
112KB

Download
memory/1892-55-0x00000000753E1000-0x00000000753E3000-memory.dmp

Filesize
8KB

Download
memory/1980-72-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads