xloader | a63e0773595f36b7ada59361abb3b0df6bf684188170da64325f7224265ecc62

General

Target

tmp/femm.exe
Size

327KB
MD5

1fe6bb3b680c6b3efe92374bd5ea8b85
SHA1

356c0cc6df02a6fa30705e918141186bd0c78475
SHA256

a63e0773595f36b7ada59361abb3b0df6bf684188170da64325f7224265ecc62
SHA512

a1c8cd4bf5527facfb859fb9b29c24f4f62246a17bbedfab52f09c9ef1f59c4ac57c03e776da67055dbfc3911e0e81ae36a5fb7158a2c55fb1d17ab9af6f5e41

Score

10^/10

xloader ef6c loader rat suricata

Malware Config

Extracted

Family

xloader

Version

2.5

Campaign

ef6c

C2

http://www.fis.photos/ef6c/

Decoy

gicaredocs.com

govusergroup.com

conversationspit.com

brondairy.com

rjtherealest.com

xn--9m1bq8wgkag3rjvb.com

mylori.net

softandcute.store

ahljsm.com

shacksolid.com

weekendmusecollection.com

gaminghallarna.net

pgonline111.online

44mpt.xyz

ambrandt.com

eddytattoo.com

blendeqes.com

upinmyfeels.com

lacucinadesign.com

docomoau.xyz

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/2212-124-0x0000000000400000-0x0000000000429000-memory.dmp	xloader
behavioral2/memory/2212-125-0x000000000041D3D0-mapping.dmp	xloader
behavioral2/memory/2868-133-0x0000000000CD0000-0x0000000000CF9000-memory.dmp	xloader

Suspicious use of SetThreadContext 3 IoCs

Processes:

femm.exefemm.exechkdsk.exe

description	pid	process	target process
PID 948 set thread context of 2212	948	femm.exe	femm.exe
PID 2212 set thread context of 3056	2212	femm.exe	Explorer.EXE
PID 2868 set thread context of 3056	2868	chkdsk.exe	Explorer.EXE

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 48 IoCs

Processes:

femm.exechkdsk.exe

pid	process
2212	femm.exe
2212	femm.exe
2212	femm.exe
2212	femm.exe
2868	chkdsk.exe
2868	chkdsk.exe
2868	chkdsk.exe
2868	chkdsk.exe
2868	chkdsk.exe
2868	chkdsk.exe
2868	chkdsk.exe
2868	chkdsk.exe
2868	chkdsk.exe
2868	chkdsk.exe
2868	chkdsk.exe
2868	chkdsk.exe
2868	chkdsk.exe
2868	chkdsk.exe
2868	chkdsk.exe
2868	chkdsk.exe
2868	chkdsk.exe
2868	chkdsk.exe
2868	chkdsk.exe
2868	chkdsk.exe
2868	chkdsk.exe
2868	chkdsk.exe
2868	chkdsk.exe
2868	chkdsk.exe
2868	chkdsk.exe
2868	chkdsk.exe
2868	chkdsk.exe
2868	chkdsk.exe
2868	chkdsk.exe
2868	chkdsk.exe
2868	chkdsk.exe
2868	chkdsk.exe
2868	chkdsk.exe
2868	chkdsk.exe
2868	chkdsk.exe
2868	chkdsk.exe
2868	chkdsk.exe
2868	chkdsk.exe
2868	chkdsk.exe
2868	chkdsk.exe
2868	chkdsk.exe
2868	chkdsk.exe
2868	chkdsk.exe
2868	chkdsk.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

3056 Explorer.EXE
Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

femm.exechkdsk.exe

pid process

2212 femm.exe
2212 femm.exe
2212 femm.exe
2868 chkdsk.exe
2868 chkdsk.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

femm.exechkdsk.exe

description pid process

Token: SeDebugPrivilege 2212 femm.exe
Token: SeDebugPrivilege 2868 chkdsk.exe

pid	process
3056	Explorer.EXE

description	pid	process
Token: SeDebugPrivilege	2212	femm.exe
Token: SeDebugPrivilege	2868	chkdsk.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

femm.exeExplorer.EXEchkdsk.exe

description	pid	process	target process
PID 948 wrote to memory of 2212	948	femm.exe	femm.exe
PID 948 wrote to memory of 2212	948	femm.exe	femm.exe
PID 948 wrote to memory of 2212	948	femm.exe	femm.exe
PID 948 wrote to memory of 2212	948	femm.exe	femm.exe
PID 948 wrote to memory of 2212	948	femm.exe	femm.exe
PID 948 wrote to memory of 2212	948	femm.exe	femm.exe
PID 3056 wrote to memory of 2868	3056	Explorer.EXE	chkdsk.exe
PID 3056 wrote to memory of 2868	3056	Explorer.EXE	chkdsk.exe
PID 3056 wrote to memory of 2868	3056	Explorer.EXE	chkdsk.exe
PID 2868 wrote to memory of 2620	2868	chkdsk.exe	cmd.exe
PID 2868 wrote to memory of 2620	2868	chkdsk.exe	cmd.exe
PID 2868 wrote to memory of 2620	2868	chkdsk.exe	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:3056

C:\Users\Admin\AppData\Local\Temp\tmp\femm.exe
"C:\Users\Admin\AppData\Local\Temp\tmp\femm.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:948

C:\Users\Admin\AppData\Local\Temp\tmp\femm.exe
"C:\Users\Admin\AppData\Local\Temp\tmp\femm.exe"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:2212

C:\Windows\SysWOW64\autoconv.exe
"C:\Windows\SysWOW64\autoconv.exe"
2⤵
PID:1220

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:2868

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\tmp\femm.exe"
3⤵
PID:2620

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/948-115-0x00000000008D0000-0x00000000008D1000-memory.dmp

Filesize
4KB

Download
memory/948-117-0x0000000005740000-0x0000000005741000-memory.dmp

Filesize
4KB

Download
memory/948-118-0x0000000005150000-0x0000000005151000-memory.dmp

Filesize
4KB

Download
memory/948-119-0x0000000005240000-0x000000000573E000-memory.dmp

Filesize
5.0MB

Download
memory/948-120-0x00000000051F0000-0x00000000051F1000-memory.dmp

Filesize
4KB

Download
memory/948-121-0x00000000053E0000-0x00000000053E5000-memory.dmp

Filesize
20KB

Download
memory/948-122-0x0000000007A70000-0x0000000007A71000-memory.dmp

Filesize
4KB

Download
memory/948-123-0x0000000007A20000-0x0000000007A6B000-memory.dmp

Filesize
300KB

Download
memory/2212-128-0x0000000001760000-0x0000000001771000-memory.dmp

Filesize
68KB

Download
memory/2212-125-0x000000000041D3D0-mapping.dmp

Download
memory/2212-124-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/2212-127-0x0000000001420000-0x0000000001740000-memory.dmp

Filesize
3.1MB

Download
memory/2620-131-0x0000000000000000-mapping.dmp

Download
memory/2868-130-0x0000000000000000-mapping.dmp

Download
memory/2868-133-0x0000000000CD0000-0x0000000000CF9000-memory.dmp

Filesize
164KB

Download
memory/2868-134-0x0000000005500000-0x0000000005820000-memory.dmp

Filesize
3.1MB

Download
memory/2868-132-0x0000000001020000-0x000000000102A000-memory.dmp

Filesize
40KB

Download
memory/2868-135-0x0000000005280000-0x0000000005310000-memory.dmp

Filesize
576KB

Download
memory/3056-129-0x0000000005790000-0x00000000058D0000-memory.dmp

Filesize
1.2MB

Download
memory/3056-136-0x0000000002430000-0x00000000024FD000-memory.dmp

Filesize
820KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads