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
behavioral1/memory/3152-1-0x0000000000CB0000-0x0000000000CC6000-memory.dmp	family_xworm
behavioral1/files/0x000d00000001ebb7-8.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 2 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-1-5-21-1294999112-580688058-1763548717-1000\Control Panel\International\Geo\Nation	15415145.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1294999112-580688058-1763548717-1000\Control Panel\International\Geo\Nation	15415145.exe

Drops startup file 3 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
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
5056	15415145.exe
4992	15415145.exe
2336	15415145.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1294999112-580688058-1763548717-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\15415145 = "C:\\Users\\Admin\\AppData\\Roaming\\15415145.exe"	15415145.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1294999112-580688058-1763548717-1000\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 2 IoCs

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

persistence execution

Scheduled Task

T1053.005

pid	Process
2448	schtasks.exe
224	schtasks.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	3152	15415145.exe
Token: SeDebugPrivilege	3152	15415145.exe
Token: SeDebugPrivilege	5056	15415145.exe
Token: SeDebugPrivilege	4992	15415145.exe
Token: SeDebugPrivilege	2336	15415145.exe
Token: SeDebugPrivilege	2336	15415145.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 3152 wrote to memory of 2448	3152	15415145.exe	97
PID 3152 wrote to memory of 2448	3152	15415145.exe	97
PID 2336 wrote to memory of 224	2336	15415145.exe	113
PID 2336 wrote to memory of 224	2336	15415145.exe	113

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:3152
- 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:2448

C:\Users\Admin\AppData\Roaming\15415145.exe
C:\Users\Admin\AppData\Roaming\15415145.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:5056

C:\Users\Admin\AppData\Roaming\15415145.exe
C:\Users\Admin\AppData\Roaming\15415145.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4992

C:\Users\Admin\AppData\Roaming\15415145.exe
C:\Users\Admin\AppData\Roaming\15415145.exe
1⤵
- Checks computer location settings
- Drops startup file
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2336
- 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:224

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

Replay Monitor

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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
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\15415145.lnk

Filesize
778B

MD5
0baa6a6791a2b8df2cb2112af595514c

SHA1
a6ef0b46421bde7849736407cb13bc29b0849f13

SHA256
baff2ec76f1b358cae8566f1af68754cfbbba09b9609f95104fe9466c1b0dd95

SHA512
3d0029d51158d4147fed791059a92357bd7c8389f5465212ad1d9e320ac75d7ac5e23492f624f2dc0c12a5a1b7014b0fc810d81f0bd255e601a35a9c7eb06c6e

Download Submit
memory/3152-0-0x00007FFA2A973000-0x00007FFA2A975000-memory.dmp

Filesize
8KB

Download
memory/3152-1-0x0000000000CB0000-0x0000000000CC6000-memory.dmp

Filesize
88KB

Download
memory/3152-10-0x00007FFA2A970000-0x00007FFA2B431000-memory.dmp

Filesize
10.8MB

Download
memory/3152-11-0x00007FFA2A970000-0x00007FFA2B431000-memory.dmp

Filesize
10.8MB

Download
memory/3152-17-0x0000000002DC0000-0x0000000002DCA000-memory.dmp

Filesize
40KB

Download
memory/3152-22-0x00007FFA2A970000-0x00007FFA2B431000-memory.dmp

Filesize
10.8MB

Download
memory/5056-14-0x00007FFA2A970000-0x00007FFA2B431000-memory.dmp

Filesize
10.8MB

Download
memory/5056-16-0x00007FFA2A970000-0x00007FFA2B431000-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