xworm | 28c951715ea1f1e20db6e2694c8b9676837190d4ff1c49c6c9f7cb41b899a91b

General

Target

28c951715ea1f1e20db6e2694c8b9676837190d4ff1c49c6c9f7cb41b899a91b.exe
Size

150KB
MD5

d5c26e12be6264033efd9e5e0662a953
SHA1

e4570cecc53e5e916c06e38c62221f27af7a1225
SHA256

28c951715ea1f1e20db6e2694c8b9676837190d4ff1c49c6c9f7cb41b899a91b
SHA512

adbb48ebda59c9b804ddaf4561a0679436987d6deef883d632f0eeb30adbc9c812f09eeefbbaef013f3139a5b6e3665af276a283c5ef73031861b49d01136b55
SSDEEP

3072:Ahd295oBFr9DnO/nk4NpVq8BxFRzaqF+o2GQJ7/JzqVfGvM:AaLonr9jgVqwlL

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

C2

p-never.gl.at.ply.gg:57388

Mutex

EKx5toUcZoEkFlZt

Attributes

Install_directory
%AppData%
install_file
svchost.exe

aes.plain

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/memory/4000-0-0x00000000004E0000-0x000000000050C000-memory.dmp	family_xworm
behavioral2/files/0x000d0000000232f8-59.dat	family_xworm

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

Command and Scripting Interpreter: PowerShell 1 TTPs 4 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
1240	powershell.exe
3624	powershell.exe
1064	powershell.exe
2672	powershell.exe

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-1-5-21-1181767204-2009306918-3718769404-1000\Control Panel\International\Geo\Nation	28c951715ea1f1e20db6e2694c8b9676837190d4ff1c49c6c9f7cb41b899a91b.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.lnk	28c951715ea1f1e20db6e2694c8b9676837190d4ff1c49c6c9f7cb41b899a91b.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.lnk	28c951715ea1f1e20db6e2694c8b9676837190d4ff1c49c6c9f7cb41b899a91b.exe

Executes dropped EXE 2 IoCs

pid	Process
2976	svchost.exe
1636	svchost.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-1-5-21-1181767204-2009306918-3718769404-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\svchost = "C:\\Users\\Admin\\AppData\\Roaming\\svchost.exe"	28c951715ea1f1e20db6e2694c8b9676837190d4ff1c49c6c9f7cb41b899a91b.exe

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
3016	schtasks.exe

Suspicious behavior: EnumeratesProcesses 12 IoCs

pid	Process
1240	powershell.exe
1240	powershell.exe
1240	powershell.exe
3624	powershell.exe
3624	powershell.exe
3624	powershell.exe
1064	powershell.exe
1064	powershell.exe
1064	powershell.exe
2672	powershell.exe
2672	powershell.exe
2672	powershell.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	4000	28c951715ea1f1e20db6e2694c8b9676837190d4ff1c49c6c9f7cb41b899a91b.exe
Token: SeDebugPrivilege	1240	powershell.exe
Token: SeDebugPrivilege	3624	powershell.exe
Token: SeDebugPrivilege	1064	powershell.exe
Token: SeDebugPrivilege	2672	powershell.exe
Token: SeDebugPrivilege	4000	28c951715ea1f1e20db6e2694c8b9676837190d4ff1c49c6c9f7cb41b899a91b.exe
Token: SeDebugPrivilege	2976	svchost.exe
Token: SeDebugPrivilege	1636	svchost.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 4000 wrote to memory of 1240	4000	28c951715ea1f1e20db6e2694c8b9676837190d4ff1c49c6c9f7cb41b899a91b.exe	94
PID 4000 wrote to memory of 1240	4000	28c951715ea1f1e20db6e2694c8b9676837190d4ff1c49c6c9f7cb41b899a91b.exe	94
PID 4000 wrote to memory of 3624	4000	28c951715ea1f1e20db6e2694c8b9676837190d4ff1c49c6c9f7cb41b899a91b.exe	97
PID 4000 wrote to memory of 3624	4000	28c951715ea1f1e20db6e2694c8b9676837190d4ff1c49c6c9f7cb41b899a91b.exe	97
PID 4000 wrote to memory of 1064	4000	28c951715ea1f1e20db6e2694c8b9676837190d4ff1c49c6c9f7cb41b899a91b.exe	100
PID 4000 wrote to memory of 1064	4000	28c951715ea1f1e20db6e2694c8b9676837190d4ff1c49c6c9f7cb41b899a91b.exe	100
PID 4000 wrote to memory of 2672	4000	28c951715ea1f1e20db6e2694c8b9676837190d4ff1c49c6c9f7cb41b899a91b.exe	102
PID 4000 wrote to memory of 2672	4000	28c951715ea1f1e20db6e2694c8b9676837190d4ff1c49c6c9f7cb41b899a91b.exe	102
PID 4000 wrote to memory of 3016	4000	28c951715ea1f1e20db6e2694c8b9676837190d4ff1c49c6c9f7cb41b899a91b.exe	109
PID 4000 wrote to memory of 3016	4000	28c951715ea1f1e20db6e2694c8b9676837190d4ff1c49c6c9f7cb41b899a91b.exe	109

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\28c951715ea1f1e20db6e2694c8b9676837190d4ff1c49c6c9f7cb41b899a91b.exe
"C:\Users\Admin\AppData\Local\Temp\28c951715ea1f1e20db6e2694c8b9676837190d4ff1c49c6c9f7cb41b899a91b.exe"
1⤵
- Checks computer location settings
- Drops startup file
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4000
- 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\28c951715ea1f1e20db6e2694c8b9676837190d4ff1c49c6c9f7cb41b899a91b.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1240
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess '28c951715ea1f1e20db6e2694c8b9676837190d4ff1c49c6c9f7cb41b899a91b.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3624
- 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\svchost.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1064
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'svchost.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2672
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "svchost" /tr "C:\Users\Admin\AppData\Roaming\svchost.exe"
  2⤵
  - Creates scheduled task(s)
  PID:3016

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 --field-trial-handle=4200,i,6593821857742176458,13646536021844995125,262144 --variations-seed-version --mojo-platform-channel-handle=4456 /prefetch:8
1⤵
PID:4592

C:\Users\Admin\AppData\Roaming\svchost.exe
C:\Users\Admin\AppData\Roaming\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2976

C:\Users\Admin\AppData\Roaming\svchost.exe
C:\Users\Admin\AppData\Roaming\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1636

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

Scheduled Task/Job

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

Exfiltration

Impact

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Downloads

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\CLR_v4.0\UsageLogs\svchost.exe.log

Filesize
654B

MD5
2ff39f6c7249774be85fd60a8f9a245e

SHA1
684ff36b31aedc1e587c8496c02722c6698c1c4e

SHA256
e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced

SHA512
1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1

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

Filesize
944B

MD5
d28a889fd956d5cb3accfbaf1143eb6f

SHA1
157ba54b365341f8ff06707d996b3635da8446f7

SHA256
21e5d7ccf80a293e6ba30ed728846ca19c929c52b96e2c8d34e27cd2234f1d45

SHA512
0b6d88deb9be85722e6a78d5886d49f2caf407a59e128d2b4ed74c1356f9928c40048a62731959f2460e9ff9d9feee311043d2a37abe3bb92c2b76a44281478c

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

Filesize
944B

MD5
60945d1a2e48da37d4ce8d9c56b6845a

SHA1
83e80a6acbeb44b68b0da00b139471f428a9d6c1

SHA256
314b91c00997034d6e015f40230d90ebbf57de5dc938b62c1a214d591793dbe3

SHA512
5d068f1d6443e26ae3cad1c80f969e50e5860967b314153c4d3b6efd1cfa39f0907c6427bec7fa43db079f258b6357e4e9a1b0b1a36b1481d2049ea0e67909ed

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

Filesize
944B

MD5
37a924b11cf3f7f57fc56898abe9b0e6

SHA1
5ee379727611f74dc5fa677b65881d4c63e10f95

SHA256
6e7f7c5fddb3a0300740fdcbe1a8ec3a0be0f16dff193f9806364a19262b52bf

SHA512
903e1badb3577e0b3e92b69491596c9a402b51cdf3de43d5fb06b08c5689d2ff7ba25f8d1497d6527e943d9063a7ee79cbf2b47892de1de3b68cc7ca77853d6f

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_n50cvueq.3b3.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

Filesize
150KB

MD5
d5c26e12be6264033efd9e5e0662a953

SHA1
e4570cecc53e5e916c06e38c62221f27af7a1225

SHA256
28c951715ea1f1e20db6e2694c8b9676837190d4ff1c49c6c9f7cb41b899a91b

SHA512
adbb48ebda59c9b804ddaf4561a0679436987d6deef883d632f0eeb30adbc9c812f09eeefbbaef013f3139a5b6e3665af276a283c5ef73031861b49d01136b55

Download Submit
memory/1240-12-0x00007FF8AEB90000-0x00007FF8AF651000-memory.dmp

Filesize
10.8MB

Download
memory/1240-17-0x00007FF8AEB90000-0x00007FF8AF651000-memory.dmp

Filesize
10.8MB

Download
memory/1240-14-0x00007FF8AEB90000-0x00007FF8AF651000-memory.dmp

Filesize
10.8MB

Download
memory/1240-13-0x00007FF8AEB90000-0x00007FF8AF651000-memory.dmp

Filesize
10.8MB

Download
memory/1240-7-0x000001A372260000-0x000001A372282000-memory.dmp

Filesize
136KB

Download
memory/4000-1-0x00007FF8AEB93000-0x00007FF8AEB95000-memory.dmp

Filesize
8KB

Download
memory/4000-56-0x00007FF8AEB90000-0x00007FF8AF651000-memory.dmp

Filesize
10.8MB

Download
memory/4000-57-0x00007FF8AEB93000-0x00007FF8AEB95000-memory.dmp

Filesize
8KB

Download
memory/4000-58-0x00007FF8AEB90000-0x00007FF8AF651000-memory.dmp

Filesize
10.8MB

Download
memory/4000-0-0x00000000004E0000-0x000000000050C000-memory.dmp

Filesize
176KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads