xloader | fd86ed836eaae451df45e757be525d3c9260d72e0c8af2eb85f1832a8499eac1

General

Target

vsl_rfq01209800122.exe
Size

249KB
MD5

c348f7fa655d92a8af86e74aa75821e6
SHA1

3b9a060bb64b880595287fcc300d4b5513acb879
SHA256

fd86ed836eaae451df45e757be525d3c9260d72e0c8af2eb85f1832a8499eac1
SHA512

65b4275494e326fa96b9e89e95c9688097eaddde8af4b57cbe01471f01986239fc314b914952286d0e1fe9543f93c44964e9191cc95bea7b345be606862495b4

Score

10^/10

xloader igwa loader rat suricata

Malware Config

Extracted

Family

xloader

Version

2.5

Campaign

igwa

Decoy

listingswithalex.com

funtabse.com

aydenwalling.com

prochal.net

superfoodsnederland.com

moldluck.com

dianekgordon.store

regionalhomescommercial.com

mysecuritymadesimple.com

malwaremastery.com

kodaikeiko.com

jrzg996.com

agricurve.net

songlingjiu.com

virginianundahfishingclub.com

friendschance.com

pastelpresents.com

answertitles.com

survival-hunter.com

nxfddl.com

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 3 IoCs

rat

Processes:

resource	yara_rule
behavioral2/memory/488-116-0x0000000000400000-0x0000000000429000-memory.dmp	xloader
behavioral2/memory/488-121-0x0000000000400000-0x0000000000429000-memory.dmp	xloader
behavioral2/memory/1188-125-0x0000000000E00000-0x0000000000E29000-memory.dmp	xloader

Loads dropped DLL 1 IoCs

Processes:

vsl_rfq01209800122.exe

pid process

1840 vsl_rfq01209800122.exe

pid	process
1840	vsl_rfq01209800122.exe

Suspicious use of SetThreadContext 4 IoCs

Processes:

vsl_rfq01209800122.exevsl_rfq01209800122.exechkdsk.exe

description	pid	process	target process
PID 1840 set thread context of 488	1840	vsl_rfq01209800122.exe	vsl_rfq01209800122.exe
PID 488 set thread context of 3064	488	vsl_rfq01209800122.exe	Explorer.EXE
PID 488 set thread context of 3064	488	vsl_rfq01209800122.exe	Explorer.EXE
PID 1188 set thread context of 3064	1188	chkdsk.exe	Explorer.EXE

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

System Information Discovery
T1082
Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry
T1012

System Information Discovery
T1082

Processes:

chkdsk.exe

description ioc process

Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier chkdsk.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	chkdsk.exe

Suspicious behavior: EnumeratesProcesses 58 IoCs

Processes:

vsl_rfq01209800122.exechkdsk.exe

pid	process
488	vsl_rfq01209800122.exe
488	vsl_rfq01209800122.exe
488	vsl_rfq01209800122.exe
488	vsl_rfq01209800122.exe
488	vsl_rfq01209800122.exe
488	vsl_rfq01209800122.exe
1188	chkdsk.exe
1188	chkdsk.exe
1188	chkdsk.exe
1188	chkdsk.exe
1188	chkdsk.exe
1188	chkdsk.exe
1188	chkdsk.exe
1188	chkdsk.exe
1188	chkdsk.exe
1188	chkdsk.exe
1188	chkdsk.exe
1188	chkdsk.exe
1188	chkdsk.exe
1188	chkdsk.exe
1188	chkdsk.exe
1188	chkdsk.exe
1188	chkdsk.exe
1188	chkdsk.exe
1188	chkdsk.exe
1188	chkdsk.exe
1188	chkdsk.exe
1188	chkdsk.exe
1188	chkdsk.exe
1188	chkdsk.exe
1188	chkdsk.exe
1188	chkdsk.exe
1188	chkdsk.exe
1188	chkdsk.exe
1188	chkdsk.exe
1188	chkdsk.exe
1188	chkdsk.exe
1188	chkdsk.exe
1188	chkdsk.exe
1188	chkdsk.exe
1188	chkdsk.exe
1188	chkdsk.exe
1188	chkdsk.exe
1188	chkdsk.exe
1188	chkdsk.exe
1188	chkdsk.exe
1188	chkdsk.exe
1188	chkdsk.exe
1188	chkdsk.exe
1188	chkdsk.exe
1188	chkdsk.exe
1188	chkdsk.exe
1188	chkdsk.exe
1188	chkdsk.exe
1188	chkdsk.exe
1188	chkdsk.exe
1188	chkdsk.exe
1188	chkdsk.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

3064 Explorer.EXE
Suspicious behavior: MapViewOfSection 6 IoCs

Processes:

vsl_rfq01209800122.exechkdsk.exe

pid process

488 vsl_rfq01209800122.exe
488 vsl_rfq01209800122.exe
488 vsl_rfq01209800122.exe
488 vsl_rfq01209800122.exe
1188 chkdsk.exe
1188 chkdsk.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

vsl_rfq01209800122.exechkdsk.exe

description pid process

Token: SeDebugPrivilege 488 vsl_rfq01209800122.exe
Token: SeDebugPrivilege 1188 chkdsk.exe

pid	process
3064	Explorer.EXE

description	pid	process
Token: SeDebugPrivilege	488	vsl_rfq01209800122.exe
Token: SeDebugPrivilege	1188	chkdsk.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

vsl_rfq01209800122.exeExplorer.EXEchkdsk.exe

description	pid	process	target process
PID 1840 wrote to memory of 488	1840	vsl_rfq01209800122.exe	vsl_rfq01209800122.exe
PID 1840 wrote to memory of 488	1840	vsl_rfq01209800122.exe	vsl_rfq01209800122.exe
PID 1840 wrote to memory of 488	1840	vsl_rfq01209800122.exe	vsl_rfq01209800122.exe
PID 1840 wrote to memory of 488	1840	vsl_rfq01209800122.exe	vsl_rfq01209800122.exe
PID 1840 wrote to memory of 488	1840	vsl_rfq01209800122.exe	vsl_rfq01209800122.exe
PID 1840 wrote to memory of 488	1840	vsl_rfq01209800122.exe	vsl_rfq01209800122.exe
PID 3064 wrote to memory of 1188	3064	Explorer.EXE	chkdsk.exe
PID 3064 wrote to memory of 1188	3064	Explorer.EXE	chkdsk.exe
PID 3064 wrote to memory of 1188	3064	Explorer.EXE	chkdsk.exe
PID 1188 wrote to memory of 1492	1188	chkdsk.exe	cmd.exe
PID 1188 wrote to memory of 1492	1188	chkdsk.exe	cmd.exe
PID 1188 wrote to memory of 1492	1188	chkdsk.exe	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:3064

C:\Users\Admin\AppData\Local\Temp\vsl_rfq01209800122.exe
"C:\Users\Admin\AppData\Local\Temp\vsl_rfq01209800122.exe"
2⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1840

C:\Users\Admin\AppData\Local\Temp\vsl_rfq01209800122.exe
"C:\Users\Admin\AppData\Local\Temp\vsl_rfq01209800122.exe"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:488

C:\Windows\SysWOW64\autoconv.exe
"C:\Windows\SysWOW64\autoconv.exe"
2⤵
PID:1336

C:\Windows\SysWOW64\chkdsk.exe
"C:\Windows\SysWOW64\chkdsk.exe"
2⤵
- Suspicious use of SetThreadContext
- Enumerates system info in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1188

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\vsl_rfq01209800122.exe"
3⤵
PID:1492

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

2

T1082

Query Registry

1

T1012

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

\Users\Admin\AppData\Local\Temp\nsv1CEC.tmp\rgyunbk.dll
MD5
102bdaa73ca322fbf4ceca5a598869f7

SHA1
b88c98aba6bc55637782a9e78a49ca3f32ef150c

SHA256
84c4f3dcd65df355ed10044404c126697b8c1e55a9b1c37e4b43b35c77ae10a1

SHA512
aad7fcc36fd66722ca027d689536d32c9ce6994ba5f34d6e891ae973963b7c85cea33b05fdcde140bf087ff98c7dc23c643c07a14baead7404a39a3b99a93d77

Download Submit
memory/488-122-0x0000000000510000-0x0000000000EA0000-memory.dmp

Filesize
9.6MB

Download
memory/488-118-0x0000000000A20000-0x0000000000D40000-memory.dmp

Filesize
3.1MB

Download
memory/488-119-0x0000000000880000-0x0000000000A1C000-memory.dmp

Filesize
1.6MB

Download
memory/488-121-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/488-116-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/1188-124-0x0000000001070000-0x000000000107A000-memory.dmp

Filesize
40KB

Download
memory/1188-125-0x0000000000E00000-0x0000000000E29000-memory.dmp

Filesize
164KB

Download
memory/1188-126-0x00000000055B0000-0x00000000058D0000-memory.dmp

Filesize
3.1MB

Download
memory/1188-127-0x0000000005270000-0x0000000005404000-memory.dmp

Filesize
1.6MB

Download
memory/3064-120-0x00000000062A0000-0x00000000063B3000-memory.dmp

Filesize
1.1MB

Download
memory/3064-123-0x0000000002C60000-0x0000000002D59000-memory.dmp

Filesize
996KB

Download
memory/3064-128-0x0000000002DE0000-0x0000000002EB8000-memory.dmp

Filesize
864KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads