xworm | 0dad9afc978334839dd03bdcd93a9abeadfc53a0d285b80193c4e04e9552ca07

General

Target

17342376576faeacd5722d9f09635eea207de2343f4d81e67cb35bb08c18dc8c.exe
Size

965KB
MD5

77a2957f0b36feb1b71e9a7bb2d40d33
SHA1

272b5e1731b0e00ab84af461adae211297a35386
SHA256

17342376576faeacd5722d9f09635eea207de2343f4d81e67cb35bb08c18dc8c
SHA512

2ab5f17a2d2b6d1369cd410b5fe3cce7eb880313b1941012ea95cae55ed8be2c4bc7b7c9d1791dc4187fcd433b8b5a414842f8e8872ac195e88752875a6cfc4d
SSDEEP

12288:2hkDgouVA2nxKkorvdRgQriDwOIxmxiZnYQE7PJcE4aI9AalvPpfK5I9H:mRmJkcoQricOIQxiZY1iaI9tlvJ8IZ

Score

10^/10

xworm discovery rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

C2

173.205.83.196:3210

Mutex

jJqPmV7YRG8bldRA

Attributes

Install_directory
%AppData%
install_file
XClient.exe

aes.plain

Signatures

Detect Xworm Payload 3 IoCs

resource	yara_rule
behavioral1/memory/2436-14-0x0000000000400000-0x0000000000410000-memory.dmp	family_xworm
behavioral1/memory/2436-18-0x0000000000400000-0x0000000000410000-memory.dmp	family_xworm
behavioral1/memory/2436-16-0x0000000000400000-0x0000000000410000-memory.dmp	family_xworm

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

Drops startup file 3 IoCs

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

Executes dropped EXE 1 IoCs

pid	Process
2356	Countee.exe

Loads dropped DLL 2 IoCs

pid	Process
2616	17342376576faeacd5722d9f09635eea207de2343f4d81e67cb35bb08c18dc8c.exe
2436	RegSvcs.exe

AutoIT Executable 1 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral1/files/0x0007000000016d67-4.dat	autoit_exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2356 set thread context of 2436	2356	Countee.exe	31

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 3 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	17342376576faeacd5722d9f09635eea207de2343f4d81e67cb35bb08c18dc8c.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Countee.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegSvcs.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2436	RegSvcs.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
2356	Countee.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2436	RegSvcs.exe

Suspicious use of FindShellTrayWindow 4 IoCs

pid	Process
2616	17342376576faeacd5722d9f09635eea207de2343f4d81e67cb35bb08c18dc8c.exe
2616	17342376576faeacd5722d9f09635eea207de2343f4d81e67cb35bb08c18dc8c.exe
2356	Countee.exe
2356	Countee.exe

Suspicious use of SendNotifyMessage 4 IoCs

pid	Process
2616	17342376576faeacd5722d9f09635eea207de2343f4d81e67cb35bb08c18dc8c.exe
2616	17342376576faeacd5722d9f09635eea207de2343f4d81e67cb35bb08c18dc8c.exe
2356	Countee.exe
2356	Countee.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2436	RegSvcs.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2616 wrote to memory of 2356	2616	17342376576faeacd5722d9f09635eea207de2343f4d81e67cb35bb08c18dc8c.exe	30
PID 2616 wrote to memory of 2356	2616	17342376576faeacd5722d9f09635eea207de2343f4d81e67cb35bb08c18dc8c.exe	30
PID 2616 wrote to memory of 2356	2616	17342376576faeacd5722d9f09635eea207de2343f4d81e67cb35bb08c18dc8c.exe	30
PID 2616 wrote to memory of 2356	2616	17342376576faeacd5722d9f09635eea207de2343f4d81e67cb35bb08c18dc8c.exe	30
PID 2356 wrote to memory of 2436	2356	Countee.exe	31
PID 2356 wrote to memory of 2436	2356	Countee.exe	31
PID 2356 wrote to memory of 2436	2356	Countee.exe	31
PID 2356 wrote to memory of 2436	2356	Countee.exe	31
PID 2356 wrote to memory of 2436	2356	Countee.exe	31
PID 2356 wrote to memory of 2436	2356	Countee.exe	31
PID 2356 wrote to memory of 2436	2356	Countee.exe	31
PID 2356 wrote to memory of 2436	2356	Countee.exe	31

C:\Users\Admin\AppData\Local\Temp\17342376576faeacd5722d9f09635eea207de2343f4d81e67cb35bb08c18dc8c.exe
"C:\Users\Admin\AppData\Local\Temp\17342376576faeacd5722d9f09635eea207de2343f4d81e67cb35bb08c18dc8c.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:2616
- C:\Users\Admin\AppData\Local\semispheroidal\Countee.exe
  "C:\Users\Admin\AppData\Local\Temp\17342376576faeacd5722d9f09635eea207de2343f4d81e67cb35bb08c18dc8c.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of WriteProcessMemory
  PID:2356
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
    "C:\Users\Admin\AppData\Local\Temp\17342376576faeacd5722d9f09635eea207de2343f4d81e67cb35bb08c18dc8c.exe"
    3⤵
    - Drops startup file
    - Loads dropped DLL
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:2436

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

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

\Users\Admin\AppData\Local\semispheroidal\Countee.exe

Filesize
965KB

MD5
77a2957f0b36feb1b71e9a7bb2d40d33

SHA1
272b5e1731b0e00ab84af461adae211297a35386

SHA256
17342376576faeacd5722d9f09635eea207de2343f4d81e67cb35bb08c18dc8c

SHA512
2ab5f17a2d2b6d1369cd410b5fe3cce7eb880313b1941012ea95cae55ed8be2c4bc7b7c9d1791dc4187fcd433b8b5a414842f8e8872ac195e88752875a6cfc4d

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

Filesize
44KB

MD5
0e06054beb13192588e745ee63a84173

SHA1
30b7d4d1277bafd04a83779fd566a1f834a8d113

SHA256
c5d6d56ded55fbd6c150ee3a0eb2e5671cae83106be2be4d70ce50aa50bab768

SHA512
251a112f3f037e62ff67a467389e47a56afb344bc942b17efa9bd2970494718b26bbee9adc3ac35f93ee4d2114aa426b6d0ea4bafad294b6c118a15f1977c215

Download Submit
memory/2356-12-0x0000000003AD0000-0x0000000003CD0000-memory.dmp

Filesize
2.0MB

Download
memory/2436-14-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/2436-18-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/2436-16-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/2436-19-0x00000000746AE000-0x00000000746AF000-memory.dmp

Filesize
4KB

Download
memory/2436-25-0x00000000746A0000-0x0000000074D8E000-memory.dmp

Filesize
6.9MB

Download
memory/2436-26-0x00000000746AE000-0x00000000746AF000-memory.dmp

Filesize
4KB

Download
memory/2436-27-0x00000000746A0000-0x0000000074D8E000-memory.dmp

Filesize
6.9MB

Download
memory/2616-2-0x00000000036B0000-0x00000000038B0000-memory.dmp

Filesize
2.0MB

Download

Analysis

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