xworm | 6f4fbb8059780db756519fae97b7f00148f1df2b96ddaf9752d9409d45c1a37e

Analysis

max time kernel
145s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
20-05-2024 07:13

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General

Target

ISF (10+2) Form 格福-3019 NASHVILLE.xls.scr.exe
Size

943KB
MD5

40a1bbdd302c9737d10df6648e6db7dc
SHA1

5f9d1d4d3aea4a82542b54a84d0fa7822bd24d2c
SHA256

6f4fbb8059780db756519fae97b7f00148f1df2b96ddaf9752d9409d45c1a37e
SHA512

98fa809cb8b7fe598f07bc61658f39379cddbfbb44ebe4e1ae8882a9ead4406820585d51a0ce836d7f2e40e532acfde61c7ba7868175871f771503a813bd0f8b
SSDEEP

12288:XVTGAlfBpSGC9Ed/Ff6qVn60dP185uk+mzA0pRELuvg8IQjzek:XVT7rhCqd/N6qVlyug8IEaY81Pek

Score

10^/10

xworm 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/3824-13-0x0000000000400000-0x0000000000414000-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

pid	Process
116	powershell.exe
4464	powershell.exe
4484	powershell.exe
4876	powershell.exe

Drops startup file 2 IoCs

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

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2128 set thread context of 3824	2128	ISF (10+2) Form 格福-3019 NASHVILLE.xls.scr.exe	94

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
2128	ISF (10+2) Form 格福-3019 NASHVILLE.xls.scr.exe
2128	ISF (10+2) Form 格福-3019 NASHVILLE.xls.scr.exe
116	powershell.exe
116	powershell.exe
4464	powershell.exe
4464	powershell.exe
4484	powershell.exe
4484	powershell.exe
4876	powershell.exe
4876	powershell.exe
3824	InstallUtil.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	2128	ISF (10+2) Form 格福-3019 NASHVILLE.xls.scr.exe
Token: SeDebugPrivilege	3824	InstallUtil.exe
Token: SeDebugPrivilege	116	powershell.exe
Token: SeDebugPrivilege	4464	powershell.exe
Token: SeDebugPrivilege	4484	powershell.exe
Token: SeDebugPrivilege	4876	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3824	InstallUtil.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 2128 wrote to memory of 3824	2128	ISF (10+2) Form 格福-3019 NASHVILLE.xls.scr.exe	94
PID 2128 wrote to memory of 3824	2128	ISF (10+2) Form 格福-3019 NASHVILLE.xls.scr.exe	94
PID 2128 wrote to memory of 3824	2128	ISF (10+2) Form 格福-3019 NASHVILLE.xls.scr.exe	94
PID 2128 wrote to memory of 3824	2128	ISF (10+2) Form 格福-3019 NASHVILLE.xls.scr.exe	94
PID 2128 wrote to memory of 3824	2128	ISF (10+2) Form 格福-3019 NASHVILLE.xls.scr.exe	94
PID 2128 wrote to memory of 3824	2128	ISF (10+2) Form 格福-3019 NASHVILLE.xls.scr.exe	94
PID 2128 wrote to memory of 3824	2128	ISF (10+2) Form 格福-3019 NASHVILLE.xls.scr.exe	94
PID 2128 wrote to memory of 3824	2128	ISF (10+2) Form 格福-3019 NASHVILLE.xls.scr.exe	94
PID 3824 wrote to memory of 116	3824	InstallUtil.exe	97
PID 3824 wrote to memory of 116	3824	InstallUtil.exe	97
PID 3824 wrote to memory of 116	3824	InstallUtil.exe	97
PID 3824 wrote to memory of 4464	3824	InstallUtil.exe	99
PID 3824 wrote to memory of 4464	3824	InstallUtil.exe	99
PID 3824 wrote to memory of 4464	3824	InstallUtil.exe	99
PID 3824 wrote to memory of 4484	3824	InstallUtil.exe	101
PID 3824 wrote to memory of 4484	3824	InstallUtil.exe	101
PID 3824 wrote to memory of 4484	3824	InstallUtil.exe	101
PID 3824 wrote to memory of 4876	3824	InstallUtil.exe	103
PID 3824 wrote to memory of 4876	3824	InstallUtil.exe	103
PID 3824 wrote to memory of 4876	3824	InstallUtil.exe	103

C:\Users\Admin\AppData\Local\Temp\ISF (10+2) Form 格福-3019 NASHVILLE.xls.scr.exe
"C:\Users\Admin\AppData\Local\Temp\ISF (10+2) Form 格福-3019 NASHVILLE.xls.scr.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2128
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe"
  2⤵
  - Drops startup file
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3824
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:116
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'InstallUtil.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4464
- - 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
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4484
- - 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
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4876

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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
536cf17e5f639faace8cf360e1076ba2

SHA1
090fbe6a4107931aeffb977c3ae0b548961d7d8c

SHA256
1f26808eab99cc2efad8489e293b92c9224439b631cb47b9f1477fa394088bd9

SHA512
7bb1933f68437c164f3b0fc55a7b7a04e9d2c56357215beaa9cac88a8a02e297c2f71987a092a366bdc931a7f90232439af670fe0bfda30cb1804a1e301de557

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

Filesize
18KB

MD5
2506330e4b6cc8ec10af979099693b95

SHA1
063ad3c01f4d579ad8947aafedf744dd0efae1f2

SHA256
7dd65d6b28cb3aca7b57f0e4c7f0c37dc1bf379fe61d45e9bfce84e61a7f3a8c

SHA512
a41250fe98a5b7866703ed23fcda9ed0a96a81a2f41c55c2068543d37c32af8d04a4a47f738134c4b961eaeee620c34b0e11c6c9690ac7db274409c94380e002

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

Filesize
18KB

MD5
cbcffc83c0cd5c19e13a00145b16be06

SHA1
7233872c8eea6e328ba7411c477998c1dce5aa4b

SHA256
7f0e4ba1e802fb0fdaf9228cfb73903357a9116cad374a6d29776e499681959f

SHA512
08e4e7da85020cadf2da0a70abc4814d62849522335461e280639ea7b376758fb748cce4052945974a3d8a48083bb5e2ada3dd651b62dae240710f8488037ee1

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_rmpjlry2.peq.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/116-54-0x0000000007E40000-0x0000000007E4E000-memory.dmp

Filesize
56KB

Download
memory/116-56-0x0000000007F50000-0x0000000007F6A000-memory.dmp

Filesize
104KB

Download
memory/116-37-0x0000000070050000-0x000000007009C000-memory.dmp

Filesize
304KB

Download
memory/116-60-0x0000000074A00000-0x00000000751B0000-memory.dmp

Filesize
7.7MB

Download
memory/116-57-0x0000000007F30000-0x0000000007F38000-memory.dmp

Filesize
32KB

Download
memory/116-47-0x0000000006EC0000-0x0000000006EDE000-memory.dmp

Filesize
120KB

Download
memory/116-55-0x0000000007E50000-0x0000000007E64000-memory.dmp

Filesize
80KB

Download
memory/116-53-0x0000000007E10000-0x0000000007E21000-memory.dmp

Filesize
68KB

Download
memory/116-52-0x0000000007E90000-0x0000000007F26000-memory.dmp

Filesize
600KB

Download
memory/116-51-0x0000000007C80000-0x0000000007C8A000-memory.dmp

Filesize
40KB

Download
memory/116-49-0x0000000008260000-0x00000000088DA000-memory.dmp

Filesize
6.5MB

Download
memory/116-17-0x0000000005310000-0x0000000005346000-memory.dmp

Filesize
216KB

Download
memory/116-19-0x0000000005A90000-0x00000000060B8000-memory.dmp

Filesize
6.2MB

Download
memory/116-18-0x0000000074A00000-0x00000000751B0000-memory.dmp

Filesize
7.7MB

Download
memory/116-36-0x0000000007AA0000-0x0000000007AD2000-memory.dmp

Filesize
200KB

Download
memory/116-21-0x0000000005A50000-0x0000000005A72000-memory.dmp

Filesize
136KB

Download
memory/116-23-0x0000000006290000-0x00000000062F6000-memory.dmp

Filesize
408KB

Download
memory/116-22-0x0000000006130000-0x0000000006196000-memory.dmp

Filesize
408KB

Download
memory/116-50-0x0000000007C10000-0x0000000007C2A000-memory.dmp

Filesize
104KB

Download
memory/116-33-0x0000000006450000-0x00000000067A4000-memory.dmp

Filesize
3.3MB

Download
memory/116-34-0x00000000068E0000-0x00000000068FE000-memory.dmp

Filesize
120KB

Download
memory/116-35-0x0000000006930000-0x000000000697C000-memory.dmp

Filesize
304KB

Download
memory/116-20-0x0000000074A00000-0x00000000751B0000-memory.dmp

Filesize
7.7MB

Download
memory/116-48-0x0000000007AE0000-0x0000000007B83000-memory.dmp

Filesize
652KB

Download
memory/2128-0-0x0000000074A0E000-0x0000000074A0F000-memory.dmp

Filesize
4KB

Download
memory/2128-8-0x0000000074A00000-0x00000000751B0000-memory.dmp

Filesize
7.7MB

Download
memory/2128-5-0x0000000074A00000-0x00000000751B0000-memory.dmp

Filesize
7.7MB

Download
memory/2128-1-0x00000000006E0000-0x00000000007D2000-memory.dmp

Filesize
968KB

Download
memory/2128-15-0x0000000074A00000-0x00000000751B0000-memory.dmp

Filesize
7.7MB

Download
memory/2128-7-0x0000000005F80000-0x0000000005F8A000-memory.dmp

Filesize
40KB

Download
memory/2128-12-0x0000000074A00000-0x00000000751B0000-memory.dmp

Filesize
7.7MB

Download
memory/2128-11-0x0000000074A0E000-0x0000000074A0F000-memory.dmp

Filesize
4KB

Download
memory/2128-10-0x0000000006C40000-0x0000000006C46000-memory.dmp

Filesize
24KB

Download
memory/2128-9-0x0000000006C20000-0x0000000006C3A000-memory.dmp

Filesize
104KB

Download
memory/2128-6-0x0000000005C80000-0x0000000005CC4000-memory.dmp

Filesize
272KB

Download
memory/2128-2-0x00000000052C0000-0x0000000005864000-memory.dmp

Filesize
5.6MB

Download
memory/2128-4-0x0000000004EF0000-0x0000000004F8C000-memory.dmp

Filesize
624KB

Download
memory/2128-3-0x0000000004DB0000-0x0000000004E42000-memory.dmp

Filesize
584KB

Download
memory/3824-13-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3824-16-0x0000000074A00000-0x00000000751B0000-memory.dmp

Filesize
7.7MB

Download
memory/3824-131-0x0000000074A00000-0x00000000751B0000-memory.dmp

Filesize
7.7MB

Download
memory/3824-132-0x0000000074A00000-0x00000000751B0000-memory.dmp

Filesize
7.7MB

Download
memory/3824-133-0x0000000074A00000-0x00000000751B0000-memory.dmp

Filesize
7.7MB

Download
memory/4464-62-0x00000000057B0000-0x0000000005B04000-memory.dmp

Filesize
3.3MB

Download
memory/4464-73-0x0000000070050000-0x000000007009C000-memory.dmp

Filesize
304KB

Download
memory/4484-95-0x0000000070050000-0x000000007009C000-memory.dmp

Filesize
304KB

Download
memory/4484-90-0x0000000005A70000-0x0000000005DC4000-memory.dmp

Filesize
3.3MB

Download
memory/4876-116-0x0000000070050000-0x000000007009C000-memory.dmp

Filesize
304KB

Download