xworm | 13682a1fb0dda20221b4944e620afbeb6f8462d06e0ad4f51cf7c8822a3bc921

General

Target

13682a1fb0dda20221b4944e620afbeb6f8462d06e0ad4f51cf7c8822a3bc921.exe
Size

9KB
MD5

4bf929c0bd3608c4c1da02c8d4e96f21
SHA1

92e766434ecd47888c2cd10af1f14c1ddb735f22
SHA256

13682a1fb0dda20221b4944e620afbeb6f8462d06e0ad4f51cf7c8822a3bc921
SHA512

d3e4b3c4509ff788944833bda8f2e10dfbd76a92bd2990b8006f14907b852e33d8bc9ae3320408bed381b58d58828aef6af56abc86291d932681170785277f55
SSDEEP

192:kmGhMITEquCA/a1zbhQ5rycbXfrxQNsWkhbv8EFm/Qm:km7rquN/a1zbIryePraXkhIl/T

Score

10^/10

xworm discovery rat trojan

Malware Config

Extracted

Family

xworm

C2

147.185.221.25:18007

Attributes

Install_directory
%AppData%
install_file
svc.exe
telegram
https://api.telegram.org/bot7958612105:AAHSNEPMuFgiaNh4WYBmEL8ysE2Ek6JH2i4/sendMessage?chat_id=8093935255

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/files/0x000c000000023b99-8.dat	family_xworm
behavioral2/memory/3752-17-0x0000000000D50000-0x0000000000D66000-memory.dmp	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-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	13682a1fb0dda20221b4944e620afbeb6f8462d06e0ad4f51cf7c8822a3bc921.exe
Key value queried	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	dropped.exe

Executes dropped EXE 3 IoCs

pid	Process
3752	dropped.exe
1104	svc.exe
4680	svc.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
18	ip-api.com

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 1 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	13682a1fb0dda20221b4944e620afbeb6f8462d06e0ad4f51cf7c8822a3bc921.exe

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
2208	schtasks.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeDebugPrivilege	3852	13682a1fb0dda20221b4944e620afbeb6f8462d06e0ad4f51cf7c8822a3bc921.exe
Token: SeDebugPrivilege	3752	dropped.exe
Token: SeDebugPrivilege	3752	dropped.exe
Token: SeDebugPrivilege	1104	svc.exe
Token: SeDebugPrivilege	4680	svc.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 3852 wrote to memory of 3752	3852	13682a1fb0dda20221b4944e620afbeb6f8462d06e0ad4f51cf7c8822a3bc921.exe	82
PID 3852 wrote to memory of 3752	3852	13682a1fb0dda20221b4944e620afbeb6f8462d06e0ad4f51cf7c8822a3bc921.exe	82
PID 3752 wrote to memory of 2208	3752	dropped.exe	84
PID 3752 wrote to memory of 2208	3752	dropped.exe	84

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\13682a1fb0dda20221b4944e620afbeb6f8462d06e0ad4f51cf7c8822a3bc921.exe
"C:\Users\Admin\AppData\Local\Temp\13682a1fb0dda20221b4944e620afbeb6f8462d06e0ad4f51cf7c8822a3bc921.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3852
- C:\Users\Admin\AppData\Local\Temp\dropped.exe
  "C:\Users\Admin\AppData\Local\Temp\dropped.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3752
- - C:\Windows\System32\schtasks.exe
    "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "svc" /tr "C:\Users\Admin\AppData\Roaming\svc.exe"
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2208

C:\Users\Admin\AppData\Roaming\svc.exe
C:\Users\Admin\AppData\Roaming\svc.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1104

C:\Users\Admin\AppData\Roaming\svc.exe
C:\Users\Admin\AppData\Roaming\svc.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4680

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
654B

MD5
2ff39f6c7249774be85fd60a8f9a245e

SHA1
684ff36b31aedc1e587c8496c02722c6698c1c4e

SHA256
e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced

SHA512
1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1

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

Filesize
60KB

MD5
3e9e3e8558100fe6532454253899a35c

SHA1
780a48407f1cdcc4f485077775e032e0322eaaad

SHA256
7be4bfd44ef825613565447e94c63af4e359221417babb5577fae8a62b683541

SHA512
e5c4dc9aa37c6d82a069a0edcc8537604f1440eb003a5d2b21aa103497b17ae80a48bb881e64a0010a9a45b481824be8f51dfdbe071b33cd316cc23a70379051

Download Submit
memory/3752-16-0x00007FF969F53000-0x00007FF969F55000-memory.dmp

Filesize
8KB

Download
memory/3752-17-0x0000000000D50000-0x0000000000D66000-memory.dmp

Filesize
88KB

Download
memory/3752-19-0x00007FF969F50000-0x00007FF96AA11000-memory.dmp

Filesize
10.8MB

Download
memory/3752-21-0x00007FF969F50000-0x00007FF96AA11000-memory.dmp

Filesize
10.8MB

Download
memory/3852-0-0x00000000753BE000-0x00000000753BF000-memory.dmp

Filesize
4KB

Download
memory/3852-1-0x00000000006A0000-0x00000000006A8000-memory.dmp

Filesize
32KB

Download
memory/3852-2-0x0000000005690000-0x0000000005C34000-memory.dmp

Filesize
5.6MB

Download
memory/3852-3-0x00000000753B0000-0x0000000075B60000-memory.dmp

Filesize
7.7MB

Download
memory/3852-15-0x00000000066B0000-0x0000000006742000-memory.dmp

Filesize
584KB

Download
memory/3852-18-0x00000000753B0000-0x0000000075B60000-memory.dmp

Filesize
7.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads