xworm | d8bba9bd5b8debd7ffe33ad35c9e15fd792fff9f353d8a1d37f9898810a5c551

General

Target

XClient.exe
Size

46KB
MD5

bfae7d0183a8c70cf8f265326951cf99
SHA1

4ceb0fbd42709154b2ae2dc9f12c06fe73849fcd
SHA256

d8bba9bd5b8debd7ffe33ad35c9e15fd792fff9f353d8a1d37f9898810a5c551
SHA512

a8d14809291b2d4a58a1b6d16d7e821e0fc0eb2415d25a2cc9dfeb5edb582c3b5e0ea8fb44bb1d989758778e5fab7ece2841913e9b0cee09cc9fd0fa76223dad
SSDEEP

768:KpbBDHT/CWTNYoxO22iCVd7cQ1gFEPG9cSS36vOChpzYunQ7:KpVDHzRpWiWwF19RC6vOCXpQ7

Score

10^/10

xworm persistence rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

C2

6.tcp.eu.ngrok.io:13248

Mutex

SVIIzSoR4OLYThbj

Attributes

Install_directory
%AppData%
install_file
XClient.exe
telegram
https://api.telegram.org/bot7002788779:AAGNt_LDnuDvtdHHRg8UnuUaJp0gRFa9ZYo/sendMessage?chat_id=5487555551

aes.plain

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/memory/3164-0-0x0000000000E20000-0x0000000000E32000-memory.dmp	family_xworm
behavioral2/files/0x000b000000023255-76.dat	family_xworm

Xworm
Xworm is a remote access trojan written in C#.
trojan rat 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-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	XClient.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 2 IoCs

pid	Process
3056	XClient.exe
4548	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-1-5-21-3808065738-1666277613-1125846146-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\XClient = "C:\\Users\\Admin\\AppData\\Roaming\\XClient.exe"	XClient.exe

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

Web Service

T1102

flow	ioc
30	6.tcp.eu.ngrok.io

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
9	ip-api.com

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

System Information Discovery
T1082

Creates scheduled task(s) 1 TTPs 1 IoCs

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

persistence

Scheduled Task/Job

T1053

pid	Process
208	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
2440	powershell.exe
2440	powershell.exe
3252	powershell.exe
3252	powershell.exe
4476	powershell.exe
4476	powershell.exe
968	powershell.exe
968	powershell.exe
3164	XClient.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	3164	XClient.exe
Token: SeDebugPrivilege	2440	powershell.exe
Token: SeDebugPrivilege	3252	powershell.exe
Token: SeDebugPrivilege	4476	powershell.exe
Token: SeDebugPrivilege	968	powershell.exe
Token: SeDebugPrivilege	3164	XClient.exe
Token: SeDebugPrivilege	3056	XClient.exe
Token: SeDebugPrivilege	4548	XClient.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3164	XClient.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 3164 wrote to memory of 2440	3164	XClient.exe	91
PID 3164 wrote to memory of 2440	3164	XClient.exe	91
PID 3164 wrote to memory of 3252	3164	XClient.exe	93
PID 3164 wrote to memory of 3252	3164	XClient.exe	93
PID 3164 wrote to memory of 4476	3164	XClient.exe	95
PID 3164 wrote to memory of 4476	3164	XClient.exe	95
PID 3164 wrote to memory of 968	3164	XClient.exe	97
PID 3164 wrote to memory of 968	3164	XClient.exe	97
PID 3164 wrote to memory of 208	3164	XClient.exe	102
PID 3164 wrote to memory of 208	3164	XClient.exe	102

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\XClient.exe
"C:\Users\Admin\AppData\Local\Temp\XClient.exe"
1⤵
- Checks computer location settings
- Drops startup file
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3164
- 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\XClient.exe'
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2440
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'XClient.exe'
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3252
- 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\Roaming\XClient.exe'
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4476
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'XClient.exe'
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:968
- 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⤵
  - Creates scheduled task(s)
  PID:208

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=1408 --field-trial-handle=2276,i,5697607538120380977,9987005253899555344,262144 --variations-seed-version /prefetch:8
1⤵
PID:4908

C:\Users\Admin\AppData\Roaming\XClient.exe
C:\Users\Admin\AppData\Roaming\XClient.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3056

C:\Users\Admin\AppData\Roaming\XClient.exe
C:\Users\Admin\AppData\Roaming\XClient.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4548

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

Scheduled Task/Job

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

Scheduled Task/Job

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Web Service

1

T1102

Exfiltration

Impact

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Downloads

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

Filesize
654B

MD5
2ff39f6c7249774be85fd60a8f9a245e

SHA1
684ff36b31aedc1e587c8496c02722c6698c1c4e

SHA256
e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced

SHA512
1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

Filesize
2KB

MD5
d85ba6ff808d9e5444a4b369f5bc2730

SHA1
31aa9d96590fff6981b315e0b391b575e4c0804a

SHA256
84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f

SHA512
8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
3a6bad9528f8e23fb5c77fbd81fa28e8

SHA1
f127317c3bc6407f536c0f0600dcbcf1aabfba36

SHA256
986366767de5873f1b170a63f2a33ce05132d1afd90c8f5017afbca8ef1beb05

SHA512
846002154a0ece6f3e9feda6f115d3161dc21b3789525dd62ae1d9188495171293efdbe7be4710666dd8a15e66b557315b5a02918a741ed1d5f3ff0c515b98e2

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
110b59ca4d00786d0bde151d21865049

SHA1
557e730d93fdf944a0cad874022df1895fb5b2e2

SHA256
77f69011c214ea5a01fd2035d781914c4893aee66d784deadc22179eadfdf77f

SHA512
cb55ac6eca50f4427718bace861679c88b2fdfea94d30209e8d61ca73a6ce9f8c4b5334922d2660a829b0636d20cbdf3bae1497c920e604efe6c636019feb10e

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
dd1d0b083fedf44b482a028fb70b96e8

SHA1
dc9c027937c9f6d52268a1504cbae42a39c8d36a

SHA256
cab7944d29e0501dc0db904ac460ca7a87700e0ec7eb62298b7b97cbf40c424c

SHA512
96bec38bfda176292ae65dcf735103e7888baa212038737c1d1e215fcb76e4c0355e4a827a1934303e7aecae91012fa412f13e38f382b732758bae985cc67973

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_howvebzl.aj2.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

Filesize
46KB

MD5
bfae7d0183a8c70cf8f265326951cf99

SHA1
4ceb0fbd42709154b2ae2dc9f12c06fe73849fcd

SHA256
d8bba9bd5b8debd7ffe33ad35c9e15fd792fff9f353d8a1d37f9898810a5c551

SHA512
a8d14809291b2d4a58a1b6d16d7e821e0fc0eb2415d25a2cc9dfeb5edb582c3b5e0ea8fb44bb1d989758778e5fab7ece2841913e9b0cee09cc9fd0fa76223dad

Download Submit
memory/968-71-0x00007FF971180000-0x00007FF971C41000-memory.dmp

Filesize
10.8MB

Download
memory/968-69-0x0000024C77770000-0x0000024C77780000-memory.dmp

Filesize
64KB

Download
memory/968-58-0x0000024C77770000-0x0000024C77780000-memory.dmp

Filesize
64KB

Download
memory/968-57-0x0000024C77770000-0x0000024C77780000-memory.dmp

Filesize
64KB

Download
memory/968-56-0x00007FF971180000-0x00007FF971C41000-memory.dmp

Filesize
10.8MB

Download
memory/2440-17-0x000002133E500000-0x000002133E510000-memory.dmp

Filesize
64KB

Download
memory/2440-3-0x000002133E450000-0x000002133E472000-memory.dmp

Filesize
136KB

Download
memory/2440-13-0x00007FF971180000-0x00007FF971C41000-memory.dmp

Filesize
10.8MB

Download
memory/2440-14-0x000002133E500000-0x000002133E510000-memory.dmp

Filesize
64KB

Download
memory/2440-15-0x000002133E500000-0x000002133E510000-memory.dmp

Filesize
64KB

Download
memory/2440-16-0x000002133E500000-0x000002133E510000-memory.dmp

Filesize
64KB

Download
memory/2440-20-0x00007FF971180000-0x00007FF971C41000-memory.dmp

Filesize
10.8MB

Download
memory/3056-81-0x00007FF971180000-0x00007FF971C41000-memory.dmp

Filesize
10.8MB

Download
memory/3056-78-0x00007FF971180000-0x00007FF971C41000-memory.dmp

Filesize
10.8MB

Download
memory/3164-0-0x0000000000E20000-0x0000000000E32000-memory.dmp

Filesize
72KB

Download
memory/3164-1-0x00007FF971180000-0x00007FF971C41000-memory.dmp

Filesize
10.8MB

Download
memory/3164-53-0x000000001BAF0000-0x000000001BB00000-memory.dmp

Filesize
64KB

Download
memory/3164-2-0x000000001BAF0000-0x000000001BB00000-memory.dmp

Filesize
64KB

Download
memory/3164-35-0x00007FF971180000-0x00007FF971C41000-memory.dmp

Filesize
10.8MB

Download
memory/3252-22-0x00007FF971180000-0x00007FF971C41000-memory.dmp

Filesize
10.8MB

Download
memory/3252-36-0x000001AB8D520000-0x000001AB8D530000-memory.dmp

Filesize
64KB

Download
memory/3252-28-0x000001AB8D520000-0x000001AB8D530000-memory.dmp

Filesize
64KB

Download
memory/3252-33-0x000001AB8D520000-0x000001AB8D530000-memory.dmp

Filesize
64KB

Download
memory/3252-38-0x00007FF971180000-0x00007FF971C41000-memory.dmp

Filesize
10.8MB

Download
memory/4476-55-0x00007FF971180000-0x00007FF971C41000-memory.dmp

Filesize
10.8MB

Download
memory/4476-49-0x00007FF971180000-0x00007FF971C41000-memory.dmp

Filesize
10.8MB

Download
memory/4476-52-0x0000022EFF210000-0x0000022EFF220000-memory.dmp

Filesize
64KB

Download
memory/4476-51-0x0000022EFF210000-0x0000022EFF220000-memory.dmp

Filesize
64KB

Download
memory/4476-50-0x0000022EFF210000-0x0000022EFF220000-memory.dmp

Filesize
64KB

Download
memory/4548-84-0x00007FF971180000-0x00007FF971C41000-memory.dmp

Filesize
10.8MB

Download
memory/4548-85-0x00007FF971180000-0x00007FF971C41000-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