xworm | 573f3d316ed68ea2d4762a657dcc62416b763a8fcd1f99017f02d3ef5c215015

General

Target

0x0037000000015f54-11.exe
Size

40KB
MD5

7ea387ab126b2ecf3365d448a318a433
SHA1

71b6e05898b68ed72ca95266d6293b225c40b612
SHA256

573f3d316ed68ea2d4762a657dcc62416b763a8fcd1f99017f02d3ef5c215015
SHA512

68830f84bf9f0a9e75a999907f7e7d816f89aa745e92078f56f303edadb236e14957e0594290f297fd4c0175ae72be02542cabe974a404fe961b7ab4bf945825
SSDEEP

768:lNfPMSk3K/EzTb/0X8WuFZ4sJF5PC9O9d968OMhM3/qj:jf05a/CTjS89/Fc9Ud968OMiY

Score

10^/10

xworm execution rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

C2

45.141.27.41:7000

Mutex

9ZF9ZsOZGh1T1r1n

Attributes

Install_directory
%Public%
install_file
csrss.exe

aes.plain

Signatures

Detect Xworm Payload 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4376-1-0x0000000000010000-0x0000000000020000-memory.dmp	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

Processes:

powershell.exepowershell.exepowershell.exepowershell.exe

pid process

2036 powershell.exe
628 powershell.exe
4760 powershell.exe
992 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

Processes:

0x0037000000015f54-11.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\Control Panel\International\Geo\Nation	0x0037000000015f54-11.exe

Drops startup file 2 IoCs

Processes:

0x0037000000015f54-11.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\csrss.lnk	0x0037000000015f54-11.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\csrss.lnk	0x0037000000015f54-11.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.

Processes:

flow ioc

25 ip-api.com
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

flow	ioc
25	ip-api.com

Suspicious behavior: EnumeratesProcesses 14 IoCs

Processes:

powershell.exepowershell.exepowershell.exepowershell.exe0x0037000000015f54-11.exe

pid	process
2036	powershell.exe
2036	powershell.exe
2036	powershell.exe
628	powershell.exe
628	powershell.exe
628	powershell.exe
4760	powershell.exe
4760	powershell.exe
4760	powershell.exe
992	powershell.exe
992	powershell.exe
992	powershell.exe
4376	0x0037000000015f54-11.exe
4376	0x0037000000015f54-11.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

Processes:

0x0037000000015f54-11.exepowershell.exepowershell.exepowershell.exepowershell.exe

description	pid	process
Token: SeDebugPrivilege	4376	0x0037000000015f54-11.exe
Token: SeDebugPrivilege	2036	powershell.exe
Token: SeDebugPrivilege	628	powershell.exe
Token: SeDebugPrivilege	4760	powershell.exe
Token: SeDebugPrivilege	992	powershell.exe
Token: SeDebugPrivilege	4376	0x0037000000015f54-11.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

0x0037000000015f54-11.exe

pid process

4376 0x0037000000015f54-11.exe

pid	process
4376	0x0037000000015f54-11.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

0x0037000000015f54-11.exe

description	pid	process	target process
PID 4376 wrote to memory of 2036	4376	0x0037000000015f54-11.exe	powershell.exe
PID 4376 wrote to memory of 2036	4376	0x0037000000015f54-11.exe	powershell.exe
PID 4376 wrote to memory of 628	4376	0x0037000000015f54-11.exe	powershell.exe
PID 4376 wrote to memory of 628	4376	0x0037000000015f54-11.exe	powershell.exe
PID 4376 wrote to memory of 4760	4376	0x0037000000015f54-11.exe	powershell.exe
PID 4376 wrote to memory of 4760	4376	0x0037000000015f54-11.exe	powershell.exe
PID 4376 wrote to memory of 992	4376	0x0037000000015f54-11.exe	powershell.exe
PID 4376 wrote to memory of 992	4376	0x0037000000015f54-11.exe	powershell.exe

C:\Users\Admin\AppData\Local\Temp\0x0037000000015f54-11.exe
"C:\Users\Admin\AppData\Local\Temp\0x0037000000015f54-11.exe"
1⤵
- Checks computer location settings
- Drops startup file
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4376

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\0x0037000000015f54-11.exe'
2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2036

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess '0x0037000000015f54-11.exe'
2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:628

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Public\csrss.exe'
2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4760

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'csrss.exe'
2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:992

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=4400,i,1067197275908310731,12785105794523264014,262144 --variations-seed-version --mojo-platform-channel-handle=4232 /prefetch:8
1⤵
PID:4120

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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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\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
e60eb305a7b2d9907488068b7065abd3

SHA1
1643dd7f915ac50c75bc01c53d68c5dafb9ce28d

SHA256
ad07460e061642c0dd4e7dfa7b821aacce873e290389e72f708e9f3504f9d135

SHA512
95c45afec6fa4e0b2a21edd10a6b2dc30568810c67bc9bc34d98ab111c48261f377a370583adb27e08616b0108026c119493b1b093b52ce931117e646b46cb7b

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Filesize
944B

MD5
98baf5117c4fcec1692067d200c58ab3

SHA1
5b33a57b72141e7508b615e17fb621612cb8e390

SHA256
30bf8496e9a08f4fdfe4767abcd565f92b6da06ca1c7823a70cb7cab16262e51

SHA512
344a70bfc037d54176f12db91f05bf4295bb587a5062fd1febe6f52853571170bd8ef6042cb87b893185bbae1937cf77b679d7970f8cc1c2666b0b7c1b32987d

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_21zuf2fi.1n3.ps1
Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/2036-3-0x00007FFBF90F0000-0x00007FFBF9BB1000-memory.dmp

Filesize
10.8MB

Download
memory/2036-14-0x00007FFBF90F0000-0x00007FFBF9BB1000-memory.dmp

Filesize
10.8MB

Download
memory/2036-15-0x00007FFBF90F0000-0x00007FFBF9BB1000-memory.dmp

Filesize
10.8MB

Download
memory/2036-18-0x00007FFBF90F0000-0x00007FFBF9BB1000-memory.dmp

Filesize
10.8MB

Download
memory/2036-9-0x00000182F8F40000-0x00000182F8F62000-memory.dmp

Filesize
136KB

Download
memory/4376-0-0x00007FFBF90F3000-0x00007FFBF90F5000-memory.dmp

Filesize
8KB

Download
memory/4376-2-0x00007FFBF90F0000-0x00007FFBF9BB1000-memory.dmp

Filesize
10.8MB

Download
memory/4376-1-0x0000000000010000-0x0000000000020000-memory.dmp

Filesize
64KB

Download
memory/4376-57-0x00007FFBF90F3000-0x00007FFBF90F5000-memory.dmp

Filesize
8KB

Download
memory/4376-58-0x00007FFBF90F0000-0x00007FFBF9BB1000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads