xworm | b399f5d239807fe144ad8872b4111002ebc6bb79ea6faa417db37f5ff95100ee

Analysis

max time kernel
146s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
03/12/2024, 02:53

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General

Target

b399f5d239807fe144ad8872b4111002ebc6bb79ea6faa417db37f5ff95100ee.exe
Size

504KB
MD5

dd81e5afcd1a13eee9f9a28c6cde2a56
SHA1

cf99a76fc406ffd81c62fbf07bd65c80eeae293f
SHA256

b399f5d239807fe144ad8872b4111002ebc6bb79ea6faa417db37f5ff95100ee
SHA512

b63633f877d4436bcd549a5bd79566d7d3eed7d3429ad44580b6f295caab9e44f562f45855cad6dff60ab5fbadc89c97289c31aac3b45e7f1df0476e610004be
SSDEEP

12288:uNIRt11XXjNZgYjirxY1dZqAi081zY5usx+XtJ:uNIp1XXjNIrq1S02zYx

Score

10^/10

xworm discovery execution rat trojan

Malware Config

Extracted

Family

xworm

104.250.180.178:7061

Attributes

Install_directory
%AppData%
install_file
XClient.exe

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral2/memory/2140-11-0x0000000000400000-0x0000000000414000-memory.dmp	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
4216	powershell.exe
2932	powershell.exe
4040	powershell.exe
880	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-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	b399f5d239807fe144ad8872b4111002ebc6bb79ea6faa417db37f5ff95100ee.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XClient.lnk	b399f5d239807fe144ad8872b4111002ebc6bb79ea6faa417db37f5ff95100ee.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XClient.lnk	b399f5d239807fe144ad8872b4111002ebc6bb79ea6faa417db37f5ff95100ee.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1476 set thread context of 2140	1476	b399f5d239807fe144ad8872b4111002ebc6bb79ea6faa417db37f5ff95100ee.exe	96

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 6 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b399f5d239807fe144ad8872b4111002ebc6bb79ea6faa417db37f5ff95100ee.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b399f5d239807fe144ad8872b4111002ebc6bb79ea6faa417db37f5ff95100ee.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
4216	powershell.exe
4216	powershell.exe
2932	powershell.exe
2932	powershell.exe
4040	powershell.exe
4040	powershell.exe
880	powershell.exe
880	powershell.exe
2140	b399f5d239807fe144ad8872b4111002ebc6bb79ea6faa417db37f5ff95100ee.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeDebugPrivilege	2140	b399f5d239807fe144ad8872b4111002ebc6bb79ea6faa417db37f5ff95100ee.exe
Token: SeDebugPrivilege	4216	powershell.exe
Token: SeDebugPrivilege	2932	powershell.exe
Token: SeDebugPrivilege	4040	powershell.exe
Token: SeDebugPrivilege	880	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2140	b399f5d239807fe144ad8872b4111002ebc6bb79ea6faa417db37f5ff95100ee.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 1476 wrote to memory of 2140	1476	b399f5d239807fe144ad8872b4111002ebc6bb79ea6faa417db37f5ff95100ee.exe	96
PID 1476 wrote to memory of 2140	1476	b399f5d239807fe144ad8872b4111002ebc6bb79ea6faa417db37f5ff95100ee.exe	96
PID 1476 wrote to memory of 2140	1476	b399f5d239807fe144ad8872b4111002ebc6bb79ea6faa417db37f5ff95100ee.exe	96
PID 1476 wrote to memory of 2140	1476	b399f5d239807fe144ad8872b4111002ebc6bb79ea6faa417db37f5ff95100ee.exe	96
PID 1476 wrote to memory of 2140	1476	b399f5d239807fe144ad8872b4111002ebc6bb79ea6faa417db37f5ff95100ee.exe	96
PID 1476 wrote to memory of 2140	1476	b399f5d239807fe144ad8872b4111002ebc6bb79ea6faa417db37f5ff95100ee.exe	96
PID 1476 wrote to memory of 2140	1476	b399f5d239807fe144ad8872b4111002ebc6bb79ea6faa417db37f5ff95100ee.exe	96
PID 1476 wrote to memory of 2140	1476	b399f5d239807fe144ad8872b4111002ebc6bb79ea6faa417db37f5ff95100ee.exe	96
PID 2140 wrote to memory of 4216	2140	b399f5d239807fe144ad8872b4111002ebc6bb79ea6faa417db37f5ff95100ee.exe	97
PID 2140 wrote to memory of 4216	2140	b399f5d239807fe144ad8872b4111002ebc6bb79ea6faa417db37f5ff95100ee.exe	97
PID 2140 wrote to memory of 4216	2140	b399f5d239807fe144ad8872b4111002ebc6bb79ea6faa417db37f5ff95100ee.exe	97
PID 2140 wrote to memory of 2932	2140	b399f5d239807fe144ad8872b4111002ebc6bb79ea6faa417db37f5ff95100ee.exe	99
PID 2140 wrote to memory of 2932	2140	b399f5d239807fe144ad8872b4111002ebc6bb79ea6faa417db37f5ff95100ee.exe	99
PID 2140 wrote to memory of 2932	2140	b399f5d239807fe144ad8872b4111002ebc6bb79ea6faa417db37f5ff95100ee.exe	99
PID 2140 wrote to memory of 4040	2140	b399f5d239807fe144ad8872b4111002ebc6bb79ea6faa417db37f5ff95100ee.exe	102
PID 2140 wrote to memory of 4040	2140	b399f5d239807fe144ad8872b4111002ebc6bb79ea6faa417db37f5ff95100ee.exe	102
PID 2140 wrote to memory of 4040	2140	b399f5d239807fe144ad8872b4111002ebc6bb79ea6faa417db37f5ff95100ee.exe	102
PID 2140 wrote to memory of 880	2140	b399f5d239807fe144ad8872b4111002ebc6bb79ea6faa417db37f5ff95100ee.exe	105
PID 2140 wrote to memory of 880	2140	b399f5d239807fe144ad8872b4111002ebc6bb79ea6faa417db37f5ff95100ee.exe	105
PID 2140 wrote to memory of 880	2140	b399f5d239807fe144ad8872b4111002ebc6bb79ea6faa417db37f5ff95100ee.exe	105

C:\Users\Admin\AppData\Local\Temp\b399f5d239807fe144ad8872b4111002ebc6bb79ea6faa417db37f5ff95100ee.exe
"C:\Users\Admin\AppData\Local\Temp\b399f5d239807fe144ad8872b4111002ebc6bb79ea6faa417db37f5ff95100ee.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1476
- C:\Users\Admin\AppData\Local\Temp\b399f5d239807fe144ad8872b4111002ebc6bb79ea6faa417db37f5ff95100ee.exe
  "C:\Users\Admin\AppData\Local\Temp\b399f5d239807fe144ad8872b4111002ebc6bb79ea6faa417db37f5ff95100ee.exe"
  2⤵
  - Checks computer location settings
  - Drops startup file
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2140
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\b399f5d239807fe144ad8872b4111002ebc6bb79ea6faa417db37f5ff95100ee.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4216
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'b399f5d239807fe144ad8872b4111002ebc6bb79ea6faa417db37f5ff95100ee.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2932
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Roaming\XClient.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4040
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'XClient.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:880

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\b399f5d239807fe144ad8872b4111002ebc6bb79ea6faa417db37f5ff95100ee.exe.log

Filesize
1KB

MD5
8ec831f3e3a3f77e4a7b9cd32b48384c

SHA1
d83f09fd87c5bd86e045873c231c14836e76a05c

SHA256
7667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982

SHA512
26bffa2406b66368bd412bf25869a792631455645992cdcade2dbc13a2e56fb546414a6a9223b94c96c38d89187add6678d4779a88b38b0c9e36be8527b213c3

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log

Filesize
2KB

MD5
968cb9309758126772781b83adb8a28f

SHA1
8da30e71accf186b2ba11da1797cf67f8f78b47c

SHA256
92099c10776bb7e3f2a8d1b82d4d40d0c4627e4f1bf754a6e58dfd2c2e97042a

SHA512
4bd50732f8af4d688d95999bddfd296115d7033ddc38f86c9fb1f47fde202bffa27e9088bebcaa3064ca946af2f5c1ca6cbde49d0907f0005c7ab42874515dd3

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

Filesize
18KB

MD5
282013140be0a071a391809bc2bcc829

SHA1
b1dcc4e6af06df3671fcb2407110374a6c5c6663

SHA256
131b6d3d86fc8794e67e975806484d8ac9932f07878d8afa4fe40a2a79132a5a

SHA512
c40b952780440619f18d632bc24465d8b87d92dc98b2ee7efebc4a7fe2e5edfd5f424ec31cb9f2efa6d8e81aba86eac32521cbb2312d2d42e29d1f6a215628af

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

Filesize
18KB

MD5
80b1651187c0d8df3347491976dba648

SHA1
1c7b3439761aa4a9238a64db096bde016ff587a2

SHA256
7e1c94a64e7862da8399804c91c5672c7c537796abd8a3a45d8a3e11aff50962

SHA512
71f6a84272d947cce4dd3e15674abe4fd852c989fadc47f93de5604c1c136d418ee38bf5c3db0e4370dc382b1d9376812018777e8cc8a16c48590a5fe88ce9dd

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

Filesize
18KB

MD5
39ff136f382de7f1e57b3037eaf88d8c

SHA1
b1e281573f26f18d2d0a504ad80d7fd5f6c11496

SHA256
5fef942adfe9e3f2e3f029e02379ac6246a8a12b854e32bafd7bb04609e78b7c

SHA512
dcdcee94544016b8a00da42a1dd73bb759561f4a1a5b004c268fba24df838927b582d5af1d20d870d7e56f5f6d3c67aa9b5cf4e5b46a42615f9b8fb04a47069a

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_0lwl0530.bc3.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/880-117-0x0000000070520000-0x000000007056C000-memory.dmp

Filesize
304KB

Download
memory/880-115-0x0000000005810000-0x0000000005B64000-memory.dmp

Filesize
3.3MB

Download
memory/1476-3-0x0000000005580000-0x0000000005612000-memory.dmp

Filesize
584KB

Download
memory/1476-4-0x0000000005630000-0x000000000563A000-memory.dmp

Filesize
40KB

Download
memory/1476-6-0x0000000005910000-0x00000000059AC000-memory.dmp

Filesize
624KB

Download
memory/1476-7-0x0000000005890000-0x00000000058A8000-memory.dmp

Filesize
96KB

Download
memory/1476-8-0x0000000074EDE000-0x0000000074EDF000-memory.dmp

Filesize
4KB

Download
memory/1476-9-0x0000000074ED0000-0x0000000075680000-memory.dmp

Filesize
7.7MB

Download
memory/1476-10-0x0000000006D30000-0x0000000006D8A000-memory.dmp

Filesize
360KB

Download
memory/1476-14-0x0000000074ED0000-0x0000000075680000-memory.dmp

Filesize
7.7MB

Download
memory/1476-0-0x0000000074EDE000-0x0000000074EDF000-memory.dmp

Filesize
4KB

Download
memory/1476-1-0x0000000000B10000-0x0000000000B94000-memory.dmp

Filesize
528KB

Download
memory/1476-2-0x0000000005C10000-0x00000000061B4000-memory.dmp

Filesize
5.6MB

Download
memory/1476-5-0x0000000074ED0000-0x0000000075680000-memory.dmp

Filesize
7.7MB

Download
memory/2140-132-0x0000000074ED0000-0x0000000075680000-memory.dmp

Filesize
7.7MB

Download
memory/2140-133-0x0000000074ED0000-0x0000000075680000-memory.dmp

Filesize
7.7MB

Download
memory/2140-15-0x0000000074ED0000-0x0000000075680000-memory.dmp

Filesize
7.7MB

Download
memory/2140-11-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2140-83-0x0000000074ED0000-0x0000000075680000-memory.dmp

Filesize
7.7MB

Download
memory/2932-73-0x0000000070520000-0x000000007056C000-memory.dmp

Filesize
304KB

Download
memory/2932-67-0x0000000005E90000-0x00000000061E4000-memory.dmp

Filesize
3.3MB

Download
memory/4040-95-0x0000000070520000-0x000000007056C000-memory.dmp

Filesize
304KB

Download
memory/4216-33-0x0000000005D30000-0x0000000006084000-memory.dmp

Filesize
3.3MB

Download
memory/4216-35-0x0000000006390000-0x00000000063DC000-memory.dmp

Filesize
304KB

Download
memory/4216-36-0x00000000068D0000-0x0000000006902000-memory.dmp

Filesize
200KB

Download
memory/4216-37-0x0000000070520000-0x000000007056C000-memory.dmp

Filesize
304KB

Download
memory/4216-47-0x0000000006910000-0x000000000692E000-memory.dmp

Filesize
120KB

Download
memory/4216-48-0x00000000072F0000-0x0000000007393000-memory.dmp

Filesize
652KB

Download
memory/4216-49-0x0000000007C70000-0x00000000082EA000-memory.dmp

Filesize
6.5MB

Download
memory/4216-50-0x0000000007620000-0x000000000763A000-memory.dmp

Filesize
104KB

Download
memory/4216-51-0x0000000007690000-0x000000000769A000-memory.dmp

Filesize
40KB

Download
memory/4216-52-0x00000000078A0000-0x0000000007936000-memory.dmp

Filesize
600KB

Download
memory/4216-53-0x0000000007820000-0x0000000007831000-memory.dmp

Filesize
68KB

Download
memory/4216-54-0x0000000007850000-0x000000000785E000-memory.dmp

Filesize
56KB

Download
memory/4216-55-0x0000000007860000-0x0000000007874000-memory.dmp

Filesize
80KB

Download
memory/4216-34-0x0000000006300000-0x000000000631E000-memory.dmp

Filesize
120KB

Download
memory/4216-28-0x0000000074ED0000-0x0000000075680000-memory.dmp

Filesize
7.7MB

Download
memory/4216-21-0x00000000054E0000-0x0000000005546000-memory.dmp

Filesize
408KB

Download
memory/4216-22-0x0000000005CC0000-0x0000000005D26000-memory.dmp

Filesize
408KB

Download
memory/4216-20-0x0000000005340000-0x0000000005362000-memory.dmp

Filesize
136KB

Download
memory/4216-18-0x0000000074ED0000-0x0000000075680000-memory.dmp

Filesize
7.7MB

Download
memory/4216-19-0x0000000005620000-0x0000000005C48000-memory.dmp

Filesize
6.2MB

Download
memory/4216-17-0x0000000074ED0000-0x0000000075680000-memory.dmp

Filesize
7.7MB

Download
memory/4216-16-0x00000000029F0000-0x0000000002A26000-memory.dmp

Filesize
216KB

Download
memory/4216-56-0x0000000007960000-0x000000000797A000-memory.dmp

Filesize
104KB

Download
memory/4216-57-0x0000000007940000-0x0000000007948000-memory.dmp

Filesize
32KB

Download
memory/4216-60-0x0000000074ED0000-0x0000000075680000-memory.dmp

Filesize
7.7MB

Download