xworm | e6fde310def0ceb4c5a7d9d49ed742ab3fb397d74e6eeaac2794ef87cb42cf8b

General

Target

e6fde310def0ceb4c5a7d9d49ed742ab3fb397d74e6eeaac2794ef87cb42cf8b.exe
Size

65KB
MD5

edafaa00a0abcf55ca36c17e9063b9cc
SHA1

daa70d384f6e6dc14521b9c6bc9e52d5911476be
SHA256

e6fde310def0ceb4c5a7d9d49ed742ab3fb397d74e6eeaac2794ef87cb42cf8b
SHA512

502da5923664c12063468a53663b09ad52238ac58f803134fc3ae766f154f3da71b6e86d175eab7dcc62520cdd0438ca966aa61b22fe28c5311e030a71fc8cba
SSDEEP

1536:T/y8CIH2mTVXSD7eJzITbdQbNK8jMdpzMQO+yCX:T/CIVTVXS6zIXdQbN5jMsQO+yG

Score

10^/10

xworm persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

dog-leaves.gl.at.ply.gg:34663

Attributes

Install_directory
%AppData%
install_file
XClient.exe

Signatures

Detect Xworm Payload 4 IoCs

resource	yara_rule
behavioral1/memory/1944-1-0x0000000000340000-0x0000000000356000-memory.dmp	family_xworm
behavioral1/files/0x000a00000001202a-10.dat	family_xworm
behavioral1/memory/2832-12-0x0000000000180000-0x0000000000196000-memory.dmp	family_xworm
behavioral1/memory/2964-15-0x0000000001000000-0x0000000001016000-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	e6fde310def0ceb4c5a7d9d49ed742ab3fb397d74e6eeaac2794ef87cb42cf8b.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XClient.lnk	e6fde310def0ceb4c5a7d9d49ed742ab3fb397d74e6eeaac2794ef87cb42cf8b.exe

Executes dropped EXE 3 IoCs

pid	Process
2832	XClient.exe
2964	XClient.exe
700	XClient.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\XClient = "C:\\Users\\Admin\\AppData\\Roaming\\XClient.exe"	e6fde310def0ceb4c5a7d9d49ed742ab3fb397d74e6eeaac2794ef87cb42cf8b.exe

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
2688	schtasks.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeDebugPrivilege	1944	e6fde310def0ceb4c5a7d9d49ed742ab3fb397d74e6eeaac2794ef87cb42cf8b.exe
Token: SeDebugPrivilege	1944	e6fde310def0ceb4c5a7d9d49ed742ab3fb397d74e6eeaac2794ef87cb42cf8b.exe
Token: SeDebugPrivilege	2832	XClient.exe
Token: SeDebugPrivilege	2964	XClient.exe
Token: SeDebugPrivilege	700	XClient.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1944 wrote to memory of 2688	1944	e6fde310def0ceb4c5a7d9d49ed742ab3fb397d74e6eeaac2794ef87cb42cf8b.exe	31
PID 1944 wrote to memory of 2688	1944	e6fde310def0ceb4c5a7d9d49ed742ab3fb397d74e6eeaac2794ef87cb42cf8b.exe	31
PID 1944 wrote to memory of 2688	1944	e6fde310def0ceb4c5a7d9d49ed742ab3fb397d74e6eeaac2794ef87cb42cf8b.exe	31
PID 2996 wrote to memory of 2832	2996	taskeng.exe	35
PID 2996 wrote to memory of 2832	2996	taskeng.exe	35
PID 2996 wrote to memory of 2832	2996	taskeng.exe	35
PID 2996 wrote to memory of 2964	2996	taskeng.exe	36
PID 2996 wrote to memory of 2964	2996	taskeng.exe	36
PID 2996 wrote to memory of 2964	2996	taskeng.exe	36
PID 2996 wrote to memory of 700	2996	taskeng.exe	37
PID 2996 wrote to memory of 700	2996	taskeng.exe	37
PID 2996 wrote to memory of 700	2996	taskeng.exe	37

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\e6fde310def0ceb4c5a7d9d49ed742ab3fb397d74e6eeaac2794ef87cb42cf8b.exe
"C:\Users\Admin\AppData\Local\Temp\e6fde310def0ceb4c5a7d9d49ed742ab3fb397d74e6eeaac2794ef87cb42cf8b.exe"
1⤵
- Drops startup file
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1944
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "XClient" /tr "C:\Users\Admin\AppData\Roaming\XClient.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2688

C:\Windows\system32\taskeng.exe
taskeng.exe {B2AF8FE7-B29D-49AB-8D43-0348D47C9F3B} S-1-5-21-4177215427-74451935-3209572229-1000:JSMURNPT\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:2996
- C:\Users\Admin\AppData\Roaming\XClient.exe
  C:\Users\Admin\AppData\Roaming\XClient.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2832
- C:\Users\Admin\AppData\Roaming\XClient.exe
  C:\Users\Admin\AppData\Roaming\XClient.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2964
- C:\Users\Admin\AppData\Roaming\XClient.exe
  C:\Users\Admin\AppData\Roaming\XClient.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:700

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

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

Exfiltration

Impact

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Downloads

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

Filesize
65KB

MD5
edafaa00a0abcf55ca36c17e9063b9cc

SHA1
daa70d384f6e6dc14521b9c6bc9e52d5911476be

SHA256
e6fde310def0ceb4c5a7d9d49ed742ab3fb397d74e6eeaac2794ef87cb42cf8b

SHA512
502da5923664c12063468a53663b09ad52238ac58f803134fc3ae766f154f3da71b6e86d175eab7dcc62520cdd0438ca966aa61b22fe28c5311e030a71fc8cba

Download Submit
memory/1944-0-0x000007FEF5AA3000-0x000007FEF5AA4000-memory.dmp

Filesize
4KB

Download
memory/1944-1-0x0000000000340000-0x0000000000356000-memory.dmp

Filesize
88KB

Download
memory/1944-2-0x000007FEF5AA0000-0x000007FEF648C000-memory.dmp

Filesize
9.9MB

Download
memory/1944-7-0x000007FEF5AA3000-0x000007FEF5AA4000-memory.dmp

Filesize
4KB

Download
memory/1944-8-0x000007FEF5AA0000-0x000007FEF648C000-memory.dmp

Filesize
9.9MB

Download
memory/2832-12-0x0000000000180000-0x0000000000196000-memory.dmp

Filesize
88KB

Download
memory/2964-15-0x0000000001000000-0x0000000001016000-memory.dmp

Filesize
88KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads