xworm | c352c942b6df33510094c7100fb9d48e36b8e1e2af40a60ccc360b58721c2390

General

Target

15415145.exe
Size

59KB
MD5

6c091ad6fae0fa76f44870d1a1b05cb4
SHA1

040f60c0ee3f4902f919025057e34ab4d11b1abd
SHA256

c352c942b6df33510094c7100fb9d48e36b8e1e2af40a60ccc360b58721c2390
SHA512

3a414f40f99e5847d9631c4ac1143c76e77db7ae42dd8c7aed2ebf1742ec73bb802d54d6cbde3b04f6b894a4cf731aa4e9dbad95166bade13f787b489d8e8d86
SSDEEP

1536:skyZtyUQ8sBkROLW+UzbTH3gfm2qt0OgSko7:skItfQ8sBkROUzbTQf+6OgK7

Score

10^/10

xworm persistence rat trojan

Malware Config

Extracted

Family

xworm

Version

3.1

C2

known-savage.gl.at.ply.gg:45116

Attributes

Install_directory
%AppData%
install_file
USB.exe

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/memory/3492-1-0x00000000000E0000-0x00000000000F6000-memory.dmp	family_xworm
behavioral2/files/0x001100000001ed07-8.dat	family_xworm

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

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-100612193-3312047696-905266872-1000\Control Panel\International\Geo\Nation	15415145.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\15415145.lnk	15415145.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\15415145.lnk	15415145.exe

Executes dropped EXE 3 IoCs

pid	Process
3224	15415145.exe
3928	15415145.exe
1384	15415145.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-1-5-21-100612193-3312047696-905266872-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\15415145 = "C:\\Users\\Admin\\AppData\\Roaming\\15415145.exe"	15415145.exe

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
4520	schtasks.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeDebugPrivilege	3492	15415145.exe
Token: SeDebugPrivilege	3492	15415145.exe
Token: SeDebugPrivilege	3224	15415145.exe
Token: SeDebugPrivilege	3928	15415145.exe
Token: SeDebugPrivilege	1384	15415145.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 3492 wrote to memory of 4520	3492	15415145.exe	93
PID 3492 wrote to memory of 4520	3492	15415145.exe	93

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\15415145.exe
"C:\Users\Admin\AppData\Local\Temp\15415145.exe"
1⤵
- Checks computer location settings
- Drops startup file
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3492
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "15415145" /tr "C:\Users\Admin\AppData\Roaming\15415145.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:4520

C:\Users\Admin\AppData\Roaming\15415145.exe
C:\Users\Admin\AppData\Roaming\15415145.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3224

C:\Users\Admin\AppData\Roaming\15415145.exe
C:\Users\Admin\AppData\Roaming\15415145.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3928

C:\Users\Admin\AppData\Roaming\15415145.exe
C:\Users\Admin\AppData\Roaming\15415145.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1384

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

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\15415145.exe.log

Filesize
654B

MD5
2ff39f6c7249774be85fd60a8f9a245e

SHA1
684ff36b31aedc1e587c8496c02722c6698c1c4e

SHA256
e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced

SHA512
1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1

Download Submit
C:\Users\Admin\AppData\Roaming\15415145.exe

Filesize
59KB

MD5
6c091ad6fae0fa76f44870d1a1b05cb4

SHA1
040f60c0ee3f4902f919025057e34ab4d11b1abd

SHA256
c352c942b6df33510094c7100fb9d48e36b8e1e2af40a60ccc360b58721c2390

SHA512
3a414f40f99e5847d9631c4ac1143c76e77db7ae42dd8c7aed2ebf1742ec73bb802d54d6cbde3b04f6b894a4cf731aa4e9dbad95166bade13f787b489d8e8d86

Download Submit
memory/3224-13-0x00007FFF25C80000-0x00007FFF26741000-memory.dmp

Filesize
10.8MB

Download
memory/3224-16-0x00007FFF25C80000-0x00007FFF26741000-memory.dmp

Filesize
10.8MB

Download
memory/3492-0-0x00007FFF25C83000-0x00007FFF25C85000-memory.dmp

Filesize
8KB

Download
memory/3492-1-0x00000000000E0000-0x00000000000F6000-memory.dmp

Filesize
88KB

Download
memory/3492-10-0x00007FFF25C80000-0x00007FFF26741000-memory.dmp

Filesize
10.8MB

Download
memory/3492-14-0x00007FFF25C83000-0x00007FFF25C85000-memory.dmp

Filesize
8KB

Download
memory/3492-17-0x00007FFF25C80000-0x00007FFF26741000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads