xworm | 924d8102157fd6dbcda4cac2b035be62d8aeeb3e3d8d5bea167989a33d0141fd

Analysis

max time kernel
143s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
21/06/2024, 11:29

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General

Target
scvhost.exe
Size 61KB
Sample240621-nl2essxgmd
SHA256 924d8102157fd6dbcda4cac2b035be62d8aeeb3e3d8d5bea167989a33d0141fd
MD5 409c4205d1119c67e3ed65c16f9b71c7
SHA1 2dd6c500f1bc16e59764cd1ac13642463efa52e7
SHA512 1de55f5dd34b546078130cb5619295113200d7fc254ef32573db256ece2ebc89181ff0cb92900617728f04a11d688d9b4bbd32b3152d1a66c9d93a206d1d135d
SSDEEP 768:gDifR2nzIdDiIp2PhtWZRYs/b1NnW9bnj5jWzNd6RuhO0utthei4Jq8Z:d2sdgh4b/b7835aJd6gO0at43J9
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

xworm execution rat trojan

Malware Config

Extracted

Family

xworm

gift-scientists.gl.at.ply.gg:20443

Attributes

Install_directory
%AppData%
install_file
scvhost.exe

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/memory/3272-1-0x0000000000AA0000-0x0000000000AB6000-memory.dmp	family_xworm
behavioral2/files/0x000200000001e32b-57.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
4476	powershell.exe
2216	powershell.exe
4404	powershell.exe
4708	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-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	scvhost.exe

Executes dropped EXE 2 IoCs

pid	Process
1188	scvhost.exe
2680	scvhost.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
2976	schtasks.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
3272	scvhost.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
4476	powershell.exe
4476	powershell.exe
2216	powershell.exe
2216	powershell.exe
4404	powershell.exe
4404	powershell.exe
4708	powershell.exe
4708	powershell.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	3272	scvhost.exe
Token: SeDebugPrivilege	4476	powershell.exe
Token: SeDebugPrivilege	2216	powershell.exe
Token: SeDebugPrivilege	4404	powershell.exe
Token: SeDebugPrivilege	4708	powershell.exe
Token: SeDebugPrivilege	3272	scvhost.exe
Token: SeDebugPrivilege	1188	scvhost.exe
Token: SeDebugPrivilege	2680	scvhost.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 3272 wrote to memory of 4476	3272	scvhost.exe	90
PID 3272 wrote to memory of 4476	3272	scvhost.exe	90
PID 3272 wrote to memory of 2216	3272	scvhost.exe	92
PID 3272 wrote to memory of 2216	3272	scvhost.exe	92
PID 3272 wrote to memory of 4404	3272	scvhost.exe	94
PID 3272 wrote to memory of 4404	3272	scvhost.exe	94
PID 3272 wrote to memory of 4708	3272	scvhost.exe	96
PID 3272 wrote to memory of 4708	3272	scvhost.exe	96
PID 3272 wrote to memory of 2976	3272	scvhost.exe	98
PID 3272 wrote to memory of 2976	3272	scvhost.exe	98

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\scvhost.exe
"C:\Users\Admin\AppData\Local\Temp\scvhost.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3272
- 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\scvhost.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - 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 'scvhost.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2216
- 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\scvhost.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4404
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'scvhost.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4708
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "scvhost" /tr "C:\Users\Admin\AppData\Roaming\scvhost.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2976

C:\Users\Admin\AppData\Roaming\scvhost.exe
C:\Users\Admin\AppData\Roaming\scvhost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1188

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=1328 --field-trial-handle=3060,i,1774866140584649235,8085848018931772189,262144 --variations-seed-version /prefetch:8
1⤵
PID:3628

C:\Users\Admin\AppData\Roaming\scvhost.exe
C:\Users\Admin\AppData\Roaming\scvhost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2680

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

powershell.exe.log

Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log
Size 2KB
SHA256 84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f
MD5 d85ba6ff808d9e5444a4b369f5bc2730
SHA1 31aa9d96590fff6981b315e0b391b575e4c0804a
SHA512 8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249
MD5 SHA1 SHA512

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scvhost.exe.log

Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\scvhost.exe.log
Size 654B
SHA256 e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced
MD5 2ff39f6c7249774be85fd60a8f9a245e
SHA1 684ff36b31aedc1e587c8496c02722c6698c1c4e
SHA512 1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1
MD5 SHA1 SHA512

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 944B
SHA256 95d79fd575bbd21540e378fcbc1cd00d16f51af62ce15bae7080bb72c24e2010
MD5 62623d22bd9e037191765d5083ce16a3
SHA1 4a07da6872672f715a4780513d95ed8ddeefd259
SHA512 9a448b7a0d867466c2ea04ab84d2a9485d5fd20ab53b2b854f491831ee3f1d781b94d2635f7b0b35cb9f2d373cd52c67570879a56a42ed66bc9db06962ed4992
MD5 SHA1 SHA512

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 944B
SHA256 993dbee9fb487dbdff56c09a1df360ea68b583bd8b28b2c315ec9d92639f3697
MD5 205f6010c033eefc37d63d8ce846bce4
SHA1 417b1aabb447765a2aa149529a1f4f52ded194ea
SHA512 c6bbd60c82ffbc3297d1d355ab3c6692de97da0b3bdd60ea4aacec6d27d360341cefa11a4411d7b8877d54d1177b48f4dc003e2a391031cc1a304b177689bfaf
MD5 SHA1 SHA512

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 944B
SHA256 980d5cc1b33f9995ce40b593bac646373b613070e5ca6da2c297c5fb8c1f28c3
MD5 f5ea6e485a296269f874f3d12709ce50
SHA1 c73e5adec8ceef00e49e0f51d382b990fc5b4d4c
SHA512 09e3083c712ae875d1dae3d4c903e96e6f5e97f5a15d4301319d3f6f63b2e704ce1b728704fd4ada7f0c26b782b05b551f961db8775f7527b1b1b224e7478659
MD5 SHA1 SHA512

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__PSScriptPolicyTest_31opntaf.qx5.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_31opntaf.qx5.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
MD5 SHA1 SHA512

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scvhost.exe

Path C:\Users\Admin\AppData\Roaming\scvhost.exe
Size 61KB
SHA256 924d8102157fd6dbcda4cac2b035be62d8aeeb3e3d8d5bea167989a33d0141fd
MD5 409c4205d1119c67e3ed65c16f9b71c7
SHA1 2dd6c500f1bc16e59764cd1ac13642463efa52e7
SHA512 1de55f5dd34b546078130cb5619295113200d7fc254ef32573db256ece2ebc89181ff0cb92900617728f04a11d688d9b4bbd32b3152d1a66c9d93a206d1d135d
SSDEEP 768:gDifR2nzIdDiIp2PhtWZRYs/b1NnW9bnj5jWzNd6RuhO0utthei4Jq8Z:d2sdgh4b/b7835aJd6gO0at43J9
MD5 SHA1 SHA512 SSDEEP

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memory/3272-1-0x0000000000AA0000-0x0000000000AB6000-memory.dmp

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memory/3272-0-0x00007FFA36593000-0x00007FFA36595000-memory.dmp

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memory/3272-60-0x00007FFA36590000-0x00007FFA37051000-memory.dmp

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memory/3272-56-0x00007FFA36593000-0x00007FFA36595000-memory.dmp

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memory/3272-55-0x00007FFA36590000-0x00007FFA37051000-memory.dmp

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memory/4476-12-0x00007FFA36590000-0x00007FFA37051000-memory.dmp

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memory/4476-19-0x00007FFA36590000-0x00007FFA37051000-memory.dmp

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memory/4476-16-0x00007FFA36590000-0x00007FFA37051000-memory.dmp

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memory/4476-15-0x00007FFA36590000-0x00007FFA37051000-memory.dmp

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memory/4476-14-0x00007FFA36590000-0x00007FFA37051000-memory.dmp

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memory/4476-13-0x00007FFA36590000-0x00007FFA37051000-memory.dmp

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memory/4476-2-0x0000026F981A0000-0x0000026F981C2000-memory.dmp

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