xworm | 93499d87ab6ac4928d012b452b28433064cd554a5b11f74a615811def521b8aa

General

Target

XClientRAW.exe
Size

75KB
MD5

8901222e32955d6a0b3726cd5df36d7d
SHA1

b7bc55849ec918a7cc2b3d95c1f3bcbeef3bd940
SHA256

93499d87ab6ac4928d012b452b28433064cd554a5b11f74a615811def521b8aa
SHA512

152a18e989ef822f65631eb273deabc19affcc377aa64e18cec51ca1e6869e940c003534deb7b047e22e7d43e9993b295ff229255d6a28ed2ac514a31f36cf7c
SSDEEP

1536:RM5at9jdDNbjPXtbgoG0anpMaf6/wQ1wO/MxK/6:RMyHp1bgR01OawO/Mo6

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

Attributes

Install_directory
%Temp%
install_file
svchost.exe
telegram
https://api.telegram.org/bot7414557379:AAHJMIrSP_hoR0jelLf8igel3SZxGY860qU/sendMessage?chat_id=2076906822

Signatures

Detect Xworm Payload 4 IoCs

resource	yara_rule
behavioral1/memory/2924-1-0x0000000000C20000-0x0000000000C3A000-memory.dmp	family_xworm
behavioral1/files/0x0007000000010300-1005.dat	family_xworm
behavioral1/memory/2456-1007-0x0000000000AB0000-0x0000000000ACA000-memory.dmp	family_xworm
behavioral1/memory/1300-1981-0x0000000000AD0000-0x0000000000AEA000-memory.dmp	family_xworm

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

Command and Scripting Interpreter: PowerShell 1 TTPs 4 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
2688	powershell.exe
2572	powershell.exe
2100	powershell.exe
3028	powershell.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 2 IoCs

pid	Process
2456	svchost.exe
1300	svchost.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-1-5-21-1488793075-819845221-1497111674-1000\Software\Microsoft\Windows\CurrentVersion\Run\svchost = "C:\\Users\\Admin\\AppData\\Local\\Temp\\svchost.exe"	XClientRAW.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 44 IoCs

Web Service

T1102

flow	ioc
50	raw.githubusercontent.com
15	raw.githubusercontent.com
17	raw.githubusercontent.com
28	raw.githubusercontent.com
29	raw.githubusercontent.com
36	raw.githubusercontent.com
38	raw.githubusercontent.com
47	raw.githubusercontent.com
33	raw.githubusercontent.com
49	raw.githubusercontent.com
12	raw.githubusercontent.com
14	raw.githubusercontent.com
23	raw.githubusercontent.com
24	raw.githubusercontent.com
26	raw.githubusercontent.com
27	raw.githubusercontent.com
39	raw.githubusercontent.com
7	raw.githubusercontent.com
13	raw.githubusercontent.com
22	raw.githubusercontent.com
44	raw.githubusercontent.com
10	raw.githubusercontent.com
16	raw.githubusercontent.com
18	raw.githubusercontent.com
42	raw.githubusercontent.com
43	raw.githubusercontent.com
11	raw.githubusercontent.com
20	raw.githubusercontent.com
25	raw.githubusercontent.com
34	raw.githubusercontent.com
35	raw.githubusercontent.com
19	raw.githubusercontent.com
21	raw.githubusercontent.com
30	raw.githubusercontent.com
32	raw.githubusercontent.com
37	raw.githubusercontent.com
46	raw.githubusercontent.com
48	raw.githubusercontent.com
6	raw.githubusercontent.com
31	raw.githubusercontent.com
40	raw.githubusercontent.com
41	raw.githubusercontent.com
45	raw.githubusercontent.com
51	raw.githubusercontent.com

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
4	ip-api.com

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

System Information Discovery
T1082

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
1740	schtasks.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2688	powershell.exe
2572	powershell.exe
2100	powershell.exe
3028	powershell.exe

Suspicious use of AdjustPrivilegeToken 7 IoCs

description	pid	Process
Token: SeDebugPrivilege	2924	XClientRAW.exe
Token: SeDebugPrivilege	2688	powershell.exe
Token: SeDebugPrivilege	2572	powershell.exe
Token: SeDebugPrivilege	2100	powershell.exe
Token: SeDebugPrivilege	3028	powershell.exe
Token: SeDebugPrivilege	2456	svchost.exe
Token: SeDebugPrivilege	1300	svchost.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 2924 wrote to memory of 2688	2924	XClientRAW.exe	31
PID 2924 wrote to memory of 2688	2924	XClientRAW.exe	31
PID 2924 wrote to memory of 2688	2924	XClientRAW.exe	31
PID 2924 wrote to memory of 2572	2924	XClientRAW.exe	33
PID 2924 wrote to memory of 2572	2924	XClientRAW.exe	33
PID 2924 wrote to memory of 2572	2924	XClientRAW.exe	33
PID 2924 wrote to memory of 2100	2924	XClientRAW.exe	35
PID 2924 wrote to memory of 2100	2924	XClientRAW.exe	35
PID 2924 wrote to memory of 2100	2924	XClientRAW.exe	35
PID 2924 wrote to memory of 3028	2924	XClientRAW.exe	37
PID 2924 wrote to memory of 3028	2924	XClientRAW.exe	37
PID 2924 wrote to memory of 3028	2924	XClientRAW.exe	37
PID 2924 wrote to memory of 1740	2924	XClientRAW.exe	39
PID 2924 wrote to memory of 1740	2924	XClientRAW.exe	39
PID 2924 wrote to memory of 1740	2924	XClientRAW.exe	39
PID 924 wrote to memory of 2456	924	taskeng.exe	42
PID 924 wrote to memory of 2456	924	taskeng.exe	42
PID 924 wrote to memory of 2456	924	taskeng.exe	42
PID 924 wrote to memory of 1300	924	taskeng.exe	44
PID 924 wrote to memory of 1300	924	taskeng.exe	44
PID 924 wrote to memory of 1300	924	taskeng.exe	44

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\XClientRAW.exe
"C:\Users\Admin\AppData\Local\Temp\XClientRAW.exe"
1⤵
- Drops startup file
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2924
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\XClientRAW.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2688
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'XClientRAW.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2572
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\svchost.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2100
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'svchost.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3028
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "svchost" /tr "C:\Users\Admin\AppData\Local\Temp\svchost.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:1740

C:\Windows\system32\taskeng.exe
taskeng.exe {E560E725-EE75-4AB5-8946-C7CAD9488609} S-1-5-21-1488793075-819845221-1497111674-1000:UPNECVIU\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:924
- C:\Users\Admin\AppData\Local\Temp\svchost.exe
  C:\Users\Admin\AppData\Local\Temp\svchost.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2456
- C:\Users\Admin\AppData\Local\Temp\svchost.exe
  C:\Users\Admin\AppData\Local\Temp\svchost.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:1300

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Web Service

1

T1102

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\Cab3A25.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\Temp\Tar3A38.tmp

Filesize
181KB

MD5
4ea6026cf93ec6338144661bf1202cd1

SHA1
a1dec9044f750ad887935a01430bf49322fbdcb7

SHA256
8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

SHA512
6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

Download Submit
C:\Users\Admin\AppData\Local\Temp\svchost.exe

Filesize
75KB

MD5
8901222e32955d6a0b3726cd5df36d7d

SHA1
b7bc55849ec918a7cc2b3d95c1f3bcbeef3bd940

SHA256
93499d87ab6ac4928d012b452b28433064cd554a5b11f74a615811def521b8aa

SHA512
152a18e989ef822f65631eb273deabc19affcc377aa64e18cec51ca1e6869e940c003534deb7b047e22e7d43e9993b295ff229255d6a28ed2ac514a31f36cf7c

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

Filesize
7KB

MD5
4c10383e6c503744574d3bf433275f4f

SHA1
0aabdc26118ced20743db5fef69c42a0073350fd

SHA256
29fab5fc3201483cc32789c15f5e558b1f626ee063f63603f87c39c9abe44817

SHA512
30802a6a51c8fcd91708b7d162fe5bbe9ef7e6aa5c607312c65c85d58d8d04e8bb9c6556724d21dc2eb7f738aac3d0e4c71e2bf87715bda6c14b61e9c5ea4b67

Download Submit
memory/1300-1981-0x0000000000AD0000-0x0000000000AEA000-memory.dmp

Filesize
104KB

Download
memory/2456-1007-0x0000000000AB0000-0x0000000000ACA000-memory.dmp

Filesize
104KB

Download
memory/2572-15-0x000000001B4E0000-0x000000001B7C2000-memory.dmp

Filesize
2.9MB

Download
memory/2572-16-0x0000000002320000-0x0000000002328000-memory.dmp

Filesize
32KB

Download
memory/2688-8-0x000000001B6F0000-0x000000001B9D2000-memory.dmp

Filesize
2.9MB

Download
memory/2688-9-0x0000000001FF0000-0x0000000001FF8000-memory.dmp

Filesize
32KB

Download
memory/2688-7-0x0000000002E40000-0x0000000002EC0000-memory.dmp

Filesize
512KB

Download
memory/2924-0-0x000007FEF6163000-0x000007FEF6164000-memory.dmp

Filesize
4KB

Download
memory/2924-93-0x000007FEF6160000-0x000007FEF6B4C000-memory.dmp

Filesize
9.9MB

Download
memory/2924-2-0x000007FEF6160000-0x000007FEF6B4C000-memory.dmp

Filesize
9.9MB

Download
memory/2924-1-0x0000000000C20000-0x0000000000C3A000-memory.dmp

Filesize
104KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads