xworm | 4c8c129addb0befc1233bcf97b5f2ba5aa768cc529d3244c7fd452b9a599ed27

General

Target

4c8c129addb0befc1233bcf97b5f2ba5aa768cc529d3244c7fd452b9a599ed27.exe
Size

10.3MB
MD5

086ae059efcfa3719a91eb362ea7b0d3
SHA1

60701d200851fd9ebfdd8839683c0bc0dcd01050
SHA256

4c8c129addb0befc1233bcf97b5f2ba5aa768cc529d3244c7fd452b9a599ed27
SHA512

8cd3cbadef4b14ddf322bc718b1a9956ce3211fcd0765ba8ef2af4ca4465cdb7baa7afdaf9e47da13d1098c5e2d0118dad7b5b85c27fcc2d5e1070f50818cb3b
SSDEEP

196608:56nteHdgyFauFurL9pQQ9elLB9bRjc+TTAO8lw7NXCm9:ieHmENUelLTR5n8l+X9

Score

10^/10

xworm discovery persistence rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

C2

147.124.219.98:7000

Mutex

MRb1Mp9n6eyda5j3

Attributes

Install_directory
%AppData%
install_file
XClient.exe

aes.plain

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral2/memory/3060-6-0x0000000000F10000-0x0000000000F1E000-memory.dmp	family_xworm

Xworm
Xworm is a remote access trojan written in C#.
trojan rat xworm
Xworm family
xworm

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XClient.lnk	csc.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XClient.lnk	csc.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Kastelo = "C:\\Users\\Admin\\Videos\\DesignerUpdater\\KonetaMoneta.exe"	4c8c129addb0befc1233bcf97b5f2ba5aa768cc529d3244c7fd452b9a599ed27.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2116 set thread context of 3060	2116	4c8c129addb0befc1233bcf97b5f2ba5aa768cc529d3244c7fd452b9a599ed27.exe	93

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4c8c129addb0befc1233bcf97b5f2ba5aa768cc529d3244c7fd452b9a599ed27.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	csc.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3060	csc.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 2116 wrote to memory of 3060	2116	4c8c129addb0befc1233bcf97b5f2ba5aa768cc529d3244c7fd452b9a599ed27.exe	93
PID 2116 wrote to memory of 3060	2116	4c8c129addb0befc1233bcf97b5f2ba5aa768cc529d3244c7fd452b9a599ed27.exe	93
PID 2116 wrote to memory of 3060	2116	4c8c129addb0befc1233bcf97b5f2ba5aa768cc529d3244c7fd452b9a599ed27.exe	93
PID 2116 wrote to memory of 3060	2116	4c8c129addb0befc1233bcf97b5f2ba5aa768cc529d3244c7fd452b9a599ed27.exe	93
PID 2116 wrote to memory of 3060	2116	4c8c129addb0befc1233bcf97b5f2ba5aa768cc529d3244c7fd452b9a599ed27.exe	93

C:\Users\Admin\AppData\Local\Temp\4c8c129addb0befc1233bcf97b5f2ba5aa768cc529d3244c7fd452b9a599ed27.exe
"C:\Users\Admin\AppData\Local\Temp\4c8c129addb0befc1233bcf97b5f2ba5aa768cc529d3244c7fd452b9a599ed27.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2116
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe"
  2⤵
  - Drops startup file
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:3060

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2116-18-0x00000000005AE000-0x00000000005C6000-memory.dmp

Filesize
96KB

Download
memory/2116-12-0x0000000000E08000-0x0000000000E14000-memory.dmp

Filesize
48KB

Download
memory/2116-3-0x0000000000400000-0x0000000000E82000-memory.dmp

Filesize
10.5MB

Download
memory/2116-2-0x0000000000400000-0x0000000000E82000-memory.dmp

Filesize
10.5MB

Download
memory/2116-5-0x0000000000400000-0x0000000000E82000-memory.dmp

Filesize
10.5MB

Download
memory/2116-1-0x00000000005AE000-0x00000000005C6000-memory.dmp

Filesize
96KB

Download
memory/2116-7-0x0000000000400000-0x0000000000E82000-memory.dmp

Filesize
10.5MB

Download
memory/2116-9-0x0000000000400000-0x0000000000E82000-memory.dmp

Filesize
10.5MB

Download
memory/2116-0-0x0000000000400000-0x0000000000E82000-memory.dmp

Filesize
10.5MB

Download
memory/3060-6-0x0000000000F10000-0x0000000000F1E000-memory.dmp

Filesize
56KB

Download
memory/3060-10-0x0000000005B10000-0x0000000005BAC000-memory.dmp

Filesize
624KB

Download
memory/3060-17-0x0000000005D30000-0x0000000005D40000-memory.dmp

Filesize
64KB

Download
memory/3060-11-0x00000000745FE000-0x00000000745FF000-memory.dmp

Filesize
4KB

Download
memory/3060-19-0x0000000006540000-0x00000000065A6000-memory.dmp

Filesize
408KB

Download
memory/3060-20-0x00000000745FE000-0x00000000745FF000-memory.dmp

Filesize
4KB

Download
memory/3060-21-0x0000000007540000-0x00000000075D2000-memory.dmp

Filesize
584KB

Download
memory/3060-22-0x0000000007B90000-0x0000000008134000-memory.dmp

Filesize
5.6MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads