xworm | 64348ec4267b52c1a7f639ccfaf9478b6d5159f796176076650901e5b7c0e1df

Analysis

max time kernel
1781s
max time network
1791s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
20-11-2024 22:08

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General

Target

tumblr-main/svchost.exe
Size

54KB
MD5

161f7262ae9a6d95ce0f93e46cc5fcf9
SHA1

164551a9330c19a9ed62b6e7d54c6d247704b5e0
SHA256

73a74ebd5e95700aef901c8771fc4b64a677885f23e15bd67628b38e726f7408
SHA512

63bcc54b5846ec20e65c660054d5f6051f357bf803451bf740d7d27505dcc3497a122d62e62ed966329d5b713b8848300bb5ddd77025a3b53cd0d53a19a4c3ea
SSDEEP

1536:SgkETz/wBd3o3nnJWbdWDc06KVnO/jtg:SGnIcXJWbdWBnO/xg

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

45.10.151.182:7000

Attributes

Install_directory
%AppData%
install_file
svchost.exe

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral6/memory/4676-1-0x00000000009E0000-0x00000000009F4000-memory.dmp	family_xworm
behavioral6/files/0x000b000000023c98-58.dat	family_xworm

Xworm
Xworm is a remote access trojan written in C#.
trojan rat xworm
Xworm family
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
1260	powershell.exe
5064	powershell.exe
2484	powershell.exe
2820	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-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	svchost.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 30 IoCs

pid	Process
2708	svchost.exe
4256	svchost.exe
4060	svchost.exe
796	svchost.exe
4772	svchost.exe
2128	svchost.exe
1488	svchost.exe
3008	svchost.exe
3264	svchost.exe
2096	svchost.exe
3400	svchost.exe
4284	svchost.exe
2620	svchost.exe
2596	svchost.exe
4476	svchost.exe
4836	svchost.exe
3088	svchost.exe
1376	svchost.exe
5076	svchost.exe
2588	svchost.exe
2028	svchost.exe
2492	svchost.exe
4200	svchost.exe
4360	svchost.exe
1572	svchost.exe
4520	svchost.exe
4572	svchost.exe
3024	svchost.exe
1180	svchost.exe
3264	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-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\svchost = "C:\\Users\\Admin\\AppData\\Roaming\\svchost.exe"	svchost.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
15	ip-api.com

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
3432	schtasks.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
1260	powershell.exe
1260	powershell.exe
5064	powershell.exe
5064	powershell.exe
2484	powershell.exe
2484	powershell.exe
2820	powershell.exe
2820	powershell.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
4676	svchost.exe

Suspicious use of AdjustPrivilegeToken 36 IoCs

description	pid	Process
Token: SeDebugPrivilege	4676	svchost.exe
Token: SeDebugPrivilege	1260	powershell.exe
Token: SeDebugPrivilege	5064	powershell.exe
Token: SeDebugPrivilege	2484	powershell.exe
Token: SeDebugPrivilege	2820	powershell.exe
Token: SeDebugPrivilege	4676	svchost.exe
Token: SeDebugPrivilege	2708	svchost.exe
Token: SeDebugPrivilege	4256	svchost.exe
Token: SeDebugPrivilege	4060	svchost.exe
Token: SeDebugPrivilege	796	svchost.exe
Token: SeDebugPrivilege	4772	svchost.exe
Token: SeDebugPrivilege	2128	svchost.exe
Token: SeDebugPrivilege	1488	svchost.exe
Token: SeDebugPrivilege	3008	svchost.exe
Token: SeDebugPrivilege	3264	svchost.exe
Token: SeDebugPrivilege	2096	svchost.exe
Token: SeDebugPrivilege	3400	svchost.exe
Token: SeDebugPrivilege	4284	svchost.exe
Token: SeDebugPrivilege	2620	svchost.exe
Token: SeDebugPrivilege	2596	svchost.exe
Token: SeDebugPrivilege	4476	svchost.exe
Token: SeDebugPrivilege	4836	svchost.exe
Token: SeDebugPrivilege	3088	svchost.exe
Token: SeDebugPrivilege	1376	svchost.exe
Token: SeDebugPrivilege	5076	svchost.exe
Token: SeDebugPrivilege	2588	svchost.exe
Token: SeDebugPrivilege	2028	svchost.exe
Token: SeDebugPrivilege	2492	svchost.exe
Token: SeDebugPrivilege	4200	svchost.exe
Token: SeDebugPrivilege	4360	svchost.exe
Token: SeDebugPrivilege	1572	svchost.exe
Token: SeDebugPrivilege	4520	svchost.exe
Token: SeDebugPrivilege	4572	svchost.exe
Token: SeDebugPrivilege	3024	svchost.exe
Token: SeDebugPrivilege	1180	svchost.exe
Token: SeDebugPrivilege	3264	svchost.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 4676 wrote to memory of 1260	4676	svchost.exe	86
PID 4676 wrote to memory of 1260	4676	svchost.exe	86
PID 4676 wrote to memory of 5064	4676	svchost.exe	88
PID 4676 wrote to memory of 5064	4676	svchost.exe	88
PID 4676 wrote to memory of 2484	4676	svchost.exe	90
PID 4676 wrote to memory of 2484	4676	svchost.exe	90
PID 4676 wrote to memory of 2820	4676	svchost.exe	93
PID 4676 wrote to memory of 2820	4676	svchost.exe	93
PID 4676 wrote to memory of 3432	4676	svchost.exe	95
PID 4676 wrote to memory of 3432	4676	svchost.exe	95

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\tumblr-main\svchost.exe
"C:\Users\Admin\AppData\Local\Temp\tumblr-main\svchost.exe"
1⤵
- Checks computer location settings
- Drops startup file
- Adds Run key to start application
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4676
- 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\tumblr-main\svchost.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1260
- 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:5064
- 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:2484
- 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:2820
- 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⤵
  - Scheduled Task/Job: Scheduled Task
  PID:3432

C:\Users\Admin\AppData\Roaming\svchost.exe
C:\Users\Admin\AppData\Roaming\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2708

C:\Users\Admin\AppData\Roaming\svchost.exe
C:\Users\Admin\AppData\Roaming\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4256

C:\Users\Admin\AppData\Roaming\svchost.exe
C:\Users\Admin\AppData\Roaming\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4060

C:\Users\Admin\AppData\Roaming\svchost.exe
C:\Users\Admin\AppData\Roaming\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:796

C:\Users\Admin\AppData\Roaming\svchost.exe
C:\Users\Admin\AppData\Roaming\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4772

C:\Users\Admin\AppData\Roaming\svchost.exe
C:\Users\Admin\AppData\Roaming\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2128

C:\Users\Admin\AppData\Roaming\svchost.exe
C:\Users\Admin\AppData\Roaming\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1488

C:\Users\Admin\AppData\Roaming\svchost.exe
C:\Users\Admin\AppData\Roaming\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3008

C:\Users\Admin\AppData\Roaming\svchost.exe
C:\Users\Admin\AppData\Roaming\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3264

C:\Users\Admin\AppData\Roaming\svchost.exe
C:\Users\Admin\AppData\Roaming\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2096

C:\Users\Admin\AppData\Roaming\svchost.exe
C:\Users\Admin\AppData\Roaming\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3400

C:\Users\Admin\AppData\Roaming\svchost.exe
C:\Users\Admin\AppData\Roaming\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4284

C:\Users\Admin\AppData\Roaming\svchost.exe
C:\Users\Admin\AppData\Roaming\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2620

C:\Users\Admin\AppData\Roaming\svchost.exe
C:\Users\Admin\AppData\Roaming\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2596

C:\Users\Admin\AppData\Roaming\svchost.exe
C:\Users\Admin\AppData\Roaming\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4476

C:\Users\Admin\AppData\Roaming\svchost.exe
C:\Users\Admin\AppData\Roaming\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4836

C:\Users\Admin\AppData\Roaming\svchost.exe
C:\Users\Admin\AppData\Roaming\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3088

C:\Users\Admin\AppData\Roaming\svchost.exe
C:\Users\Admin\AppData\Roaming\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1376

C:\Users\Admin\AppData\Roaming\svchost.exe
C:\Users\Admin\AppData\Roaming\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:5076

C:\Users\Admin\AppData\Roaming\svchost.exe
C:\Users\Admin\AppData\Roaming\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2588

C:\Users\Admin\AppData\Roaming\svchost.exe
C:\Users\Admin\AppData\Roaming\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2028

C:\Users\Admin\AppData\Roaming\svchost.exe
C:\Users\Admin\AppData\Roaming\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2492

C:\Users\Admin\AppData\Roaming\svchost.exe
C:\Users\Admin\AppData\Roaming\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4200

C:\Users\Admin\AppData\Roaming\svchost.exe
C:\Users\Admin\AppData\Roaming\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4360

C:\Users\Admin\AppData\Roaming\svchost.exe
C:\Users\Admin\AppData\Roaming\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1572

C:\Users\Admin\AppData\Roaming\svchost.exe
C:\Users\Admin\AppData\Roaming\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4520

C:\Users\Admin\AppData\Roaming\svchost.exe
C:\Users\Admin\AppData\Roaming\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4572

C:\Users\Admin\AppData\Roaming\svchost.exe
C:\Users\Admin\AppData\Roaming\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3024

C:\Users\Admin\AppData\Roaming\svchost.exe
C:\Users\Admin\AppData\Roaming\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1180

C:\Users\Admin\AppData\Roaming\svchost.exe
C:\Users\Admin\AppData\Roaming\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3264

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

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

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\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
77d622bb1a5b250869a3238b9bc1402b

SHA1
d47f4003c2554b9dfc4c16f22460b331886b191b

SHA256
f97ff12a8abf4bf88bb6497bd2ac2da12628c8847a8ba5a9026bdbb76507cdfb

SHA512
d6789b5499f23c9035375a102271e17a8a82e57d6f5312fa24242e08a83efdeb8becb7622f55c4cf1b89c7d864b445df11f4d994cf7e2f87a900535bcca12fd9

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

Filesize
944B

MD5
22310ad6749d8cc38284aa616efcd100

SHA1
440ef4a0a53bfa7c83fe84326a1dff4326dcb515

SHA256
55b1d8021c4eb4c3c0d75e3ed7a4eb30cd0123e3d69f32eeb596fe4ffec05abf

SHA512
2ef08e2ee15bb86695fe0c10533014ffed76ececc6e579d299d3365fafb7627f53e32e600bb6d872b9f58aca94f8cb7e1e94cdfd14777527f7f0aa019d9c6def

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

Filesize
944B

MD5
eb1ad317bd25b55b2bbdce8a28a74a94

SHA1
98a3978be4d10d62e7411946474579ee5bdc5ea6

SHA256
9e94e7c9ac6134ee30e79498558aa1a5a1ac79a643666c3f8922eed215dd3a98

SHA512
d011f266c0240d84470c0f9577cd9e4927309bd19bb38570ca9704ed8e1d159f9bea982a59d3eefef72ce7a10bd81208b82e88ef57c7af587f7437a89769adc0

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_e2cehp1t.vyz.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

Filesize
54KB

MD5
161f7262ae9a6d95ce0f93e46cc5fcf9

SHA1
164551a9330c19a9ed62b6e7d54c6d247704b5e0

SHA256
73a74ebd5e95700aef901c8771fc4b64a677885f23e15bd67628b38e726f7408

SHA512
63bcc54b5846ec20e65c660054d5f6051f357bf803451bf740d7d27505dcc3497a122d62e62ed966329d5b713b8848300bb5ddd77025a3b53cd0d53a19a4c3ea

Download Submit
memory/1260-12-0x00007FFEBCFA0000-0x00007FFEBDA61000-memory.dmp

Filesize
10.8MB

Download
memory/1260-18-0x00007FFEBCFA0000-0x00007FFEBDA61000-memory.dmp

Filesize
10.8MB

Download
memory/1260-15-0x00007FFEBCFA0000-0x00007FFEBDA61000-memory.dmp

Filesize
10.8MB

Download
memory/1260-14-0x00007FFEBCFA0000-0x00007FFEBDA61000-memory.dmp

Filesize
10.8MB

Download
memory/1260-13-0x00007FFEBCFA0000-0x00007FFEBDA61000-memory.dmp

Filesize
10.8MB

Download
memory/1260-2-0x0000015BB19D0000-0x0000015BB19F2000-memory.dmp

Filesize
136KB

Download
memory/4676-0-0x00007FFEBCFA3000-0x00007FFEBCFA5000-memory.dmp

Filesize
8KB

Download
memory/4676-57-0x00007FFEBCFA3000-0x00007FFEBCFA5000-memory.dmp

Filesize
8KB

Download
memory/4676-1-0x00000000009E0000-0x00000000009F4000-memory.dmp

Filesize
80KB

Download