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 3 IoCs

resource	yara_rule
behavioral1/memory/1796-15-0x0000000000080000-0x000000000008E000-memory.dmp	family_xworm
behavioral1/memory/1796-13-0x0000000000080000-0x000000000008E000-memory.dmp	family_xworm
behavioral1/memory/1796-8-0x0000000000080000-0x000000000008E000-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

Loads dropped DLL 1 IoCs

pid	Process
1796	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-1-5-21-4177215427-74451935-3209572229-1000\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 1696 set thread context of 1796	1696	4c8c129addb0befc1233bcf97b5f2ba5aa768cc529d3244c7fd452b9a599ed27.exe	31

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	1796	csc.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1696 wrote to memory of 1796	1696	4c8c129addb0befc1233bcf97b5f2ba5aa768cc529d3244c7fd452b9a599ed27.exe	31
PID 1696 wrote to memory of 1796	1696	4c8c129addb0befc1233bcf97b5f2ba5aa768cc529d3244c7fd452b9a599ed27.exe	31
PID 1696 wrote to memory of 1796	1696	4c8c129addb0befc1233bcf97b5f2ba5aa768cc529d3244c7fd452b9a599ed27.exe	31
PID 1696 wrote to memory of 1796	1696	4c8c129addb0befc1233bcf97b5f2ba5aa768cc529d3244c7fd452b9a599ed27.exe	31
PID 1696 wrote to memory of 1796	1696	4c8c129addb0befc1233bcf97b5f2ba5aa768cc529d3244c7fd452b9a599ed27.exe	31
PID 1696 wrote to memory of 1796	1696	4c8c129addb0befc1233bcf97b5f2ba5aa768cc529d3244c7fd452b9a599ed27.exe	31

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:1696
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe"
  2⤵
  - Drops startup file
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:1796

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

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Downloads

\Users\Admin\AppData\Roaming\XClient.exe

Filesize
2.1MB

MD5
00c5eb029f9263291c91277e37b5fe4c

SHA1
a2c9b1eb1cfe18fa86bcc382250ba304b92cf897

SHA256
31fa9a05ad114c683a189a17f7e12a3bb93a0ed07c8029a89c1b7508da4f1f31

SHA512
5a0ac2b25a6cb63945c882055d16486d1a40c5f87786ea1439f5f8fc5a1da77aa80c8d090750ca14340b22bb48a7dfa0b2f5abf66df70a90e6e0c9b763398857

Download Submit
memory/1696-17-0x00000000005AE000-0x00000000005C6000-memory.dmp

Filesize
96KB

Download
memory/1696-0-0x0000000000400000-0x0000000000E82000-memory.dmp

Filesize
10.5MB

Download
memory/1696-5-0x0000000000400000-0x0000000000E82000-memory.dmp

Filesize
10.5MB

Download
memory/1696-3-0x0000000000400000-0x0000000000E82000-memory.dmp

Filesize
10.5MB

Download
memory/1696-4-0x0000000000400000-0x0000000000E82000-memory.dmp

Filesize
10.5MB

Download
memory/1696-10-0x0000000000400000-0x0000000000E82000-memory.dmp

Filesize
10.5MB

Download
memory/1696-9-0x0000000000400000-0x0000000000E82000-memory.dmp

Filesize
10.5MB

Download
memory/1696-1-0x00000000005AE000-0x00000000005C6000-memory.dmp

Filesize
96KB

Download
memory/1696-11-0x0000000000400000-0x0000000000E82000-memory.dmp

Filesize
10.5MB

Download
memory/1796-13-0x0000000000080000-0x000000000008E000-memory.dmp

Filesize
56KB

Download
memory/1796-7-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download
memory/1796-6-0x0000000000080000-0x000000000008E000-memory.dmp

Filesize
56KB

Download
memory/1796-16-0x000000007405E000-0x000000007405F000-memory.dmp

Filesize
4KB

Download
memory/1796-8-0x0000000000080000-0x000000000008E000-memory.dmp

Filesize
56KB

Download
memory/1796-15-0x0000000000080000-0x000000000008E000-memory.dmp

Filesize
56KB

Download
memory/1796-23-0x0000000074050000-0x000000007473E000-memory.dmp

Filesize
6.9MB

Download
memory/1796-24-0x000000007405E000-0x000000007405F000-memory.dmp

Filesize
4KB

Download
memory/1796-25-0x0000000074050000-0x000000007473E000-memory.dmp

Filesize
6.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads