xworm | 8641f88b89c9076ece3ee571baa4b3c93ba3ac3883e90fe5f894dc41e3b7bdc7

Analysis

max time kernel
297s
max time network
303s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
21-04-2024 23:38

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General

Target

Ro-exec/loader-upd.exe
Size

70KB
MD5

573bd20fc8382d92a7ae9eae51e738e3
SHA1

55006093429df791f27e91a66e5ee63a81382b28
SHA256

09036ffa342f9e5bb1e31a867dcc3b60db011baba8c0d202aff1d33195cbe729
SHA512

d38736acff4128d6ce9ea17ee609ca33a37ac88f2c994cf4caf7f0eb62406a8963c33531b9f3cd020974d892c2751f3a4f67ce13ed6ba6080f97c406ccbb4aca
SSDEEP

1536:PmMfwrNATngx6fPLgD9vYebv2S5NiwWW6N9dOoihkAO:LCmn463UD6ebv242FzOoiSAO

Score

10^/10

xworm persistence rat trojan

Malware Config

Extracted

Family

xworm

Attributes

Install_directory
%Public%
install_file
svchost.exe
pastebin_url
https://pastebin.com/raw/UWpQULMP

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral3/memory/2148-0-0x0000000000A60000-0x0000000000A78000-memory.dmp	family_xworm
behavioral3/files/0x000c000000023248-84.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	loader-upd.exe

Executes dropped EXE 5 IoCs

pid	Process
3580	svchost.exe
4876	svchost.exe
4052	svchost.exe
572	svchost.exe
4988	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-1-5-21-3808065738-1666277613-1125846146-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\svchost = "C:\\Users\\Public\\svchost.exe"	loader-upd.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 64 IoCs

Web Service

T1102

flow	ioc
122	pastebin.com
131	pastebin.com
132	pastebin.com
45	pastebin.com
84	pastebin.com
98	pastebin.com
113	pastebin.com
78	pastebin.com
88	pastebin.com
26	pastebin.com
135	pastebin.com
80	pastebin.com
109	pastebin.com
125	pastebin.com
126	pastebin.com
15	pastebin.com
61	pastebin.com
49	pastebin.com
81	pastebin.com
86	pastebin.com
90	pastebin.com
110	pastebin.com
117	pastebin.com
32	pastebin.com
48	pastebin.com
121	pastebin.com
145	pastebin.com
55	pastebin.com
104	pastebin.com
65	pastebin.com
70	pastebin.com
85	pastebin.com
92	pastebin.com
94	pastebin.com
95	pastebin.com
53	pastebin.com
63	pastebin.com
130	pastebin.com
134	pastebin.com
143	pastebin.com
105	pastebin.com
112	pastebin.com
77	pastebin.com
91	pastebin.com
66	pastebin.com
83	pastebin.com
97	pastebin.com
103	pastebin.com
111	pastebin.com
119	pastebin.com
50	pastebin.com
56	pastebin.com
142	pastebin.com
146	pastebin.com
137	pastebin.com
123	pastebin.com
136	pastebin.com
24	pastebin.com
51	pastebin.com
62	pastebin.com
71	pastebin.com
118	pastebin.com
120	pastebin.com
16	pastebin.com

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

System Information Discovery
T1082

Checks SCSI registry key(s) 3 TTPs 3 IoCs

SCSI information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_DADY&Prod_HARDDISK\4&215468a5&0&000000	taskmgr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_DADY&Prod_HARDDISK\4&215468a5&0&000000\Properties\{b725f130-47ef-101a-a5f1-02608c9eebac}\000A	taskmgr.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_DADY&Prod_HARDDISK\4&215468a5&0&000000\FriendlyName	taskmgr.exe

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
1696	schtasks.exe

Suspicious behavior: EnumeratesProcesses 18 IoCs

pid	Process
2612	powershell.exe
2612	powershell.exe
3268	powershell.exe
3268	powershell.exe
5028	powershell.exe
5028	powershell.exe
2964	powershell.exe
2964	powershell.exe
956	taskmgr.exe
956	taskmgr.exe
956	taskmgr.exe
956	taskmgr.exe
956	taskmgr.exe
956	taskmgr.exe
956	taskmgr.exe
956	taskmgr.exe
956	taskmgr.exe
956	taskmgr.exe

Suspicious use of AdjustPrivilegeToken 15 IoCs

description	pid	Process
Token: SeDebugPrivilege	2148	loader-upd.exe
Token: SeDebugPrivilege	2612	powershell.exe
Token: SeDebugPrivilege	3268	powershell.exe
Token: SeDebugPrivilege	5028	powershell.exe
Token: SeDebugPrivilege	2964	powershell.exe
Token: SeDebugPrivilege	956	taskmgr.exe
Token: SeSystemProfilePrivilege	956	taskmgr.exe
Token: SeCreateGlobalPrivilege	956	taskmgr.exe
Token: 33	956	taskmgr.exe
Token: SeIncBasePriorityPrivilege	956	taskmgr.exe
Token: SeDebugPrivilege	3580	svchost.exe
Token: SeDebugPrivilege	4876	svchost.exe
Token: SeDebugPrivilege	4052	svchost.exe
Token: SeDebugPrivilege	572	svchost.exe
Token: SeDebugPrivilege	4988	svchost.exe

Suspicious use of FindShellTrayWindow 34 IoCs

pid	Process
956	taskmgr.exe
956	taskmgr.exe
956	taskmgr.exe
956	taskmgr.exe
956	taskmgr.exe
956	taskmgr.exe
956	taskmgr.exe
956	taskmgr.exe
956	taskmgr.exe
956	taskmgr.exe
956	taskmgr.exe
956	taskmgr.exe
956	taskmgr.exe
956	taskmgr.exe
956	taskmgr.exe
956	taskmgr.exe
956	taskmgr.exe
956	taskmgr.exe
956	taskmgr.exe
956	taskmgr.exe
956	taskmgr.exe
956	taskmgr.exe
956	taskmgr.exe
956	taskmgr.exe
956	taskmgr.exe
956	taskmgr.exe
956	taskmgr.exe
956	taskmgr.exe
956	taskmgr.exe
956	taskmgr.exe
956	taskmgr.exe
956	taskmgr.exe
956	taskmgr.exe
956	taskmgr.exe

Suspicious use of SendNotifyMessage 34 IoCs

pid	Process
956	taskmgr.exe
956	taskmgr.exe
956	taskmgr.exe
956	taskmgr.exe
956	taskmgr.exe
956	taskmgr.exe
956	taskmgr.exe
956	taskmgr.exe
956	taskmgr.exe
956	taskmgr.exe
956	taskmgr.exe
956	taskmgr.exe
956	taskmgr.exe
956	taskmgr.exe
956	taskmgr.exe
956	taskmgr.exe
956	taskmgr.exe
956	taskmgr.exe
956	taskmgr.exe
956	taskmgr.exe
956	taskmgr.exe
956	taskmgr.exe
956	taskmgr.exe
956	taskmgr.exe
956	taskmgr.exe
956	taskmgr.exe
956	taskmgr.exe
956	taskmgr.exe
956	taskmgr.exe
956	taskmgr.exe
956	taskmgr.exe
956	taskmgr.exe
956	taskmgr.exe
956	taskmgr.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 2148 wrote to memory of 2612	2148	loader-upd.exe	90
PID 2148 wrote to memory of 2612	2148	loader-upd.exe	90
PID 2148 wrote to memory of 3268	2148	loader-upd.exe	92
PID 2148 wrote to memory of 3268	2148	loader-upd.exe	92
PID 2148 wrote to memory of 5028	2148	loader-upd.exe	94
PID 2148 wrote to memory of 5028	2148	loader-upd.exe	94
PID 2148 wrote to memory of 2964	2148	loader-upd.exe	96
PID 2148 wrote to memory of 2964	2148	loader-upd.exe	96
PID 2148 wrote to memory of 1696	2148	loader-upd.exe	98
PID 2148 wrote to memory of 1696	2148	loader-upd.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\Ro-exec\loader-upd.exe
"C:\Users\Admin\AppData\Local\Temp\Ro-exec\loader-upd.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2148
- 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\Ro-exec\loader-upd.exe'
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2612
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'loader-upd.exe'
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3268
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Public\svchost.exe'
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:5028
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'svchost.exe'
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2964
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "svchost" /tr "C:\Users\Public\svchost.exe"
  2⤵
  - Creates scheduled task(s)
  PID:1696

C:\Windows\system32\taskmgr.exe
"C:\Windows\system32\taskmgr.exe" /4
1⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:956

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=3692 --field-trial-handle=2244,i,11878111470816612087,2265290141962607370,262144 --variations-seed-version /prefetch:8
1⤵
PID:1732

C:\Users\Public\svchost.exe
C:\Users\Public\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3580

C:\Users\Public\svchost.exe
C:\Users\Public\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4876

C:\Users\Public\svchost.exe
C:\Users\Public\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4052

C:\Users\Public\svchost.exe
C:\Users\Public\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:572

C:\Users\Public\svchost.exe
C:\Users\Public\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4988

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Web Service

T1102

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
cadef9abd087803c630df65264a6c81c

SHA1
babbf3636c347c8727c35f3eef2ee643dbcc4bd2

SHA256
cce65b73cdfe9304bcd5207913e8b60fb69faa20cd3b684f2b0343b755b99438

SHA512
7278aa87124abb382d9024a645e881e7b7cf1b84e8894943b36e018dbf0399e6858392f77980b599fa5488e2e21bf757a0702fe6419417edac93b68e0c2ec085

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

Filesize
944B

MD5
6e722800abdc44fc1ce4688ca490118f

SHA1
f64a4ff6d6e9b567151260fbaa543c345565de3b

SHA256
e63cad15f591e7898953167aa4ff8960500a177ad1bfa5e30229793b8b0af7e4

SHA512
5b4f0da0561a1cc5f36bad93b1f0d9ce225e86464a4d1a5dbefe5eac8e339420446c9300b1362992b06838a302a8172944557e2c202bf980f5a22b98b9bea13b

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

Filesize
944B

MD5
9bc110200117a3752313ca2acaf8a9e1

SHA1
fda6b7da2e7b0175b391475ca78d1b4cf2147cd3

SHA256
c88e4bbb64f7fa31429ebe82c1cf07785c44486f37576f783a26ac856e02a4eb

SHA512
1f1af32aa18a8cbfcc65b0d4fb7e6ca2705f125eaa85789e981ee68b90c64522e954825abf460d4b4f97567715dfae8d9b0a25a4d54d10bc4c257c472f2e80fb

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_p5b52xwd.40g.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Public\svchost.exe

Filesize
70KB

MD5
573bd20fc8382d92a7ae9eae51e738e3

SHA1
55006093429df791f27e91a66e5ee63a81382b28

SHA256
09036ffa342f9e5bb1e31a867dcc3b60db011baba8c0d202aff1d33195cbe729

SHA512
d38736acff4128d6ce9ea17ee609ca33a37ac88f2c994cf4caf7f0eb62406a8963c33531b9f3cd020974d892c2751f3a4f67ce13ed6ba6080f97c406ccbb4aca

Download Submit
memory/572-120-0x00007FFC22ED0000-0x00007FFC23991000-memory.dmp

Filesize
10.8MB

Download
memory/572-121-0x00007FFC22ED0000-0x00007FFC23991000-memory.dmp

Filesize
10.8MB

Download
memory/956-78-0x00000276CCE00000-0x00000276CCE01000-memory.dmp

Filesize
4KB

Download
memory/956-82-0x00000276CCE00000-0x00000276CCE01000-memory.dmp

Filesize
4KB

Download
memory/956-80-0x00000276CCE00000-0x00000276CCE01000-memory.dmp

Filesize
4KB

Download
memory/956-79-0x00000276CCE00000-0x00000276CCE01000-memory.dmp

Filesize
4KB

Download
memory/956-83-0x00000276CCE00000-0x00000276CCE01000-memory.dmp

Filesize
4KB

Download
memory/956-77-0x00000276CCE00000-0x00000276CCE01000-memory.dmp

Filesize
4KB

Download
memory/956-81-0x00000276CCE00000-0x00000276CCE01000-memory.dmp

Filesize
4KB

Download
memory/956-71-0x00000276CCE00000-0x00000276CCE01000-memory.dmp

Filesize
4KB

Download
memory/956-73-0x00000276CCE00000-0x00000276CCE01000-memory.dmp

Filesize
4KB

Download
memory/956-72-0x00000276CCE00000-0x00000276CCE01000-memory.dmp

Filesize
4KB

Download
memory/2148-87-0x000000001B810000-0x000000001B820000-memory.dmp

Filesize
64KB

Download
memory/2148-85-0x000000001BE20000-0x000000001BF22000-memory.dmp

Filesize
1.0MB

Download
memory/2148-34-0x00007FFC22ED0000-0x00007FFC23991000-memory.dmp

Filesize
10.8MB

Download
memory/2148-0-0x0000000000A60000-0x0000000000A78000-memory.dmp

Filesize
96KB

Download
memory/2148-70-0x000000001B810000-0x000000001B820000-memory.dmp

Filesize
64KB

Download
memory/2148-1-0x00007FFC22ED0000-0x00007FFC23991000-memory.dmp

Filesize
10.8MB

Download
memory/2612-19-0x00007FFC22ED0000-0x00007FFC23991000-memory.dmp

Filesize
10.8MB

Download
memory/2612-16-0x00000219822A0000-0x00000219822B0000-memory.dmp

Filesize
64KB

Download
memory/2612-15-0x00000219822A0000-0x00000219822B0000-memory.dmp

Filesize
64KB

Download
memory/2612-10-0x000002199D260000-0x000002199D282000-memory.dmp

Filesize
136KB

Download
memory/2612-3-0x00000219822A0000-0x00000219822B0000-memory.dmp

Filesize
64KB

Download
memory/2612-4-0x00000219822A0000-0x00000219822B0000-memory.dmp

Filesize
64KB

Download
memory/2612-2-0x00007FFC22ED0000-0x00007FFC23991000-memory.dmp

Filesize
10.8MB

Download
memory/2964-54-0x0000018225520000-0x0000018225530000-memory.dmp

Filesize
64KB

Download
memory/2964-66-0x0000018225520000-0x0000018225530000-memory.dmp

Filesize
64KB

Download
memory/2964-55-0x0000018225520000-0x0000018225530000-memory.dmp

Filesize
64KB

Download
memory/2964-53-0x00007FFC22ED0000-0x00007FFC23991000-memory.dmp

Filesize
10.8MB

Download
memory/2964-68-0x00007FFC22ED0000-0x00007FFC23991000-memory.dmp

Filesize
10.8MB

Download
memory/3268-22-0x0000022277700000-0x0000022277710000-memory.dmp

Filesize
64KB

Download
memory/3268-21-0x00007FFC22ED0000-0x00007FFC23991000-memory.dmp

Filesize
10.8MB

Download
memory/3268-33-0x0000022277700000-0x0000022277710000-memory.dmp

Filesize
64KB

Download
memory/3268-37-0x00007FFC22ED0000-0x00007FFC23991000-memory.dmp

Filesize
10.8MB

Download
memory/3268-35-0x0000022277700000-0x0000022277710000-memory.dmp

Filesize
64KB

Download
memory/3580-93-0x00007FFC22ED0000-0x00007FFC23991000-memory.dmp

Filesize
10.8MB

Download
memory/3580-91-0x00007FFC22ED0000-0x00007FFC23991000-memory.dmp

Filesize
10.8MB

Download
memory/4052-111-0x00007FFC22ED0000-0x00007FFC23991000-memory.dmp

Filesize
10.8MB

Download
memory/4052-112-0x00007FFC22ED0000-0x00007FFC23991000-memory.dmp

Filesize
10.8MB

Download
memory/4876-102-0x00007FFC22ED0000-0x00007FFC23991000-memory.dmp

Filesize
10.8MB

Download
memory/4876-103-0x00007FFC22ED0000-0x00007FFC23991000-memory.dmp

Filesize
10.8MB

Download
memory/4988-129-0x00007FFC22ED0000-0x00007FFC23991000-memory.dmp

Filesize
10.8MB

Download
memory/4988-130-0x00007FFC22ED0000-0x00007FFC23991000-memory.dmp

Filesize
10.8MB

Download
memory/5028-38-0x00007FFC22ED0000-0x00007FFC23991000-memory.dmp

Filesize
10.8MB

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memory/5028-44-0x000001E264720000-0x000001E264730000-memory.dmp

Filesize
64KB

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memory/5028-49-0x000001E264720000-0x000001E264730000-memory.dmp

Filesize
64KB

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memory/5028-52-0x00007FFC22ED0000-0x00007FFC23991000-memory.dmp

Filesize
10.8MB

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