xworm | 3d72496f46a130331bc6e35d4211c7a9d6c31770affba0f99ebbe6abf6cd42d2

Analysis

max time kernel
149s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240709-en
resource tags

arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
submitted
25/07/2024, 00:42

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General

Target
LisectAVT_2403002A_473.exe
Size 6.4MB
Sample240725-a2edbazgpc
SHA256 3d72496f46a130331bc6e35d4211c7a9d6c31770affba0f99ebbe6abf6cd42d2
MD5 f256345478d00e975e7c0987fa05f63e
SHA1 005b5c18852675ced842632957199d6d47128ade
SHA512 161ec4e346727afa5a96d698ab773e16380cfc46bd2e994c8e84a21a32e7ed538047f7c36eadd91d505d1423c991e38e07671bb009c885d862d9037298421c7a
SSDEEP 196608:wmci4xQ81Y4AIBqxfOxlNbyJl1eO5KtTHCx7h:anxQQY4AHsxl0JTeOot
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

xworm discovery evasion persistence privilege_escalation rat trojan

Malware Config

Extracted

Family

xworm

Version

h2cker.ddns.net:194
h2cker.ddns.net:0194

Attributes

Install_directory
%AppData%
install_file
USB.exe

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023450-33.dat	family_xworm
behavioral2/memory/3324-43-0x00000000007A0000-0x00000000007B8000-memory.dmp	family_xworm

Xworm
Xworm is a remote access trojan written in C#.
trojan rat xworm

Modifies Windows Firewall 2 TTPs 1 IoCs

evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
4380	netsh.exe

Checks computer location settings 2 TTPs 4 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-1-5-21-1705699165-553239100-4129523827-1000\Control Panel\International\Geo\Nation	LocalM_d_cKXRrV.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1705699165-553239100-4129523827-1000\Control Panel\International\Geo\Nation	LisectAVT_2403002A_473.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1705699165-553239100-4129523827-1000\Control Panel\International\Geo\Nation	LocalylmNBbjoFA.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1705699165-553239100-4129523827-1000\Control Panel\International\Geo\Nation	Local_wGRdnhmmy.exe

Executes dropped EXE 8 IoCs

pid	Process
2672	LocalM_d_cKXRrV.exe
4124	LocalylmNBbjoFA.exe
3324	Local_wGRdnhmmy.exe
3216	LocalwCRkvqzBqW.exe
5096	LocalwCRkvqzBqW.tmp
4072	server.exe
1504	Local_wGRdnhmmy.exe
1844	Local_wGRdnhmmy.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-1-5-21-1705699165-553239100-4129523827-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Local_wGRdnhmmy = "C:\\Users\\Admin\\AppData\\Roaming\\Local_wGRdnhmmy.exe"	Local_wGRdnhmmy.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
12	ip-api.com

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

System Information Discovery
T1082

Event Triggered Execution: Netsh Helper DLL 1 TTPs 3 IoCs

Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

persistence privilege_escalation

Netsh Helper DLL

T1546.007

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

System Location Discovery: System Language Discovery 1 TTPs 5 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	LocalM_d_cKXRrV.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	LocalwCRkvqzBqW.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	LocalwCRkvqzBqW.tmp
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	server.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

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
4060	schtasks.exe

Suspicious use of AdjustPrivilegeToken 38 IoCs

description	pid	Process
Token: SeDebugPrivilege	3324	Local_wGRdnhmmy.exe
Token: SeDebugPrivilege	4072	server.exe
Token: 33	4072	server.exe
Token: SeIncBasePriorityPrivilege	4072	server.exe
Token: 33	4072	server.exe
Token: SeIncBasePriorityPrivilege	4072	server.exe
Token: 33	4072	server.exe
Token: SeIncBasePriorityPrivilege	4072	server.exe
Token: SeDebugPrivilege	1504	Local_wGRdnhmmy.exe
Token: 33	4072	server.exe
Token: SeIncBasePriorityPrivilege	4072	server.exe
Token: 33	4072	server.exe
Token: SeIncBasePriorityPrivilege	4072	server.exe
Token: 33	4072	server.exe
Token: SeIncBasePriorityPrivilege	4072	server.exe
Token: 33	4072	server.exe
Token: SeIncBasePriorityPrivilege	4072	server.exe
Token: 33	4072	server.exe
Token: SeIncBasePriorityPrivilege	4072	server.exe
Token: 33	4072	server.exe
Token: SeIncBasePriorityPrivilege	4072	server.exe
Token: 33	4072	server.exe
Token: SeIncBasePriorityPrivilege	4072	server.exe
Token: SeDebugPrivilege	1844	Local_wGRdnhmmy.exe
Token: 33	4072	server.exe
Token: SeIncBasePriorityPrivilege	4072	server.exe
Token: 33	4072	server.exe
Token: SeIncBasePriorityPrivilege	4072	server.exe
Token: 33	4072	server.exe
Token: SeIncBasePriorityPrivilege	4072	server.exe
Token: 33	4072	server.exe
Token: SeIncBasePriorityPrivilege	4072	server.exe
Token: 33	4072	server.exe
Token: SeIncBasePriorityPrivilege	4072	server.exe
Token: 33	4072	server.exe
Token: SeIncBasePriorityPrivilege	4072	server.exe
Token: 33	4072	server.exe
Token: SeIncBasePriorityPrivilege	4072	server.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 2656 wrote to memory of 2672	2656	LisectAVT_2403002A_473.exe	84
PID 2656 wrote to memory of 2672	2656	LisectAVT_2403002A_473.exe	84
PID 2656 wrote to memory of 2672	2656	LisectAVT_2403002A_473.exe	84
PID 2656 wrote to memory of 4124	2656	LisectAVT_2403002A_473.exe	85
PID 2656 wrote to memory of 4124	2656	LisectAVT_2403002A_473.exe	85
PID 4124 wrote to memory of 3324	4124	LocalylmNBbjoFA.exe	86
PID 4124 wrote to memory of 3324	4124	LocalylmNBbjoFA.exe	86
PID 4124 wrote to memory of 3216	4124	LocalylmNBbjoFA.exe	87
PID 4124 wrote to memory of 3216	4124	LocalylmNBbjoFA.exe	87
PID 4124 wrote to memory of 3216	4124	LocalylmNBbjoFA.exe	87
PID 3216 wrote to memory of 5096	3216	LocalwCRkvqzBqW.exe	88
PID 3216 wrote to memory of 5096	3216	LocalwCRkvqzBqW.exe	88
PID 3216 wrote to memory of 5096	3216	LocalwCRkvqzBqW.exe	88
PID 3324 wrote to memory of 4060	3324	Local_wGRdnhmmy.exe	97
PID 3324 wrote to memory of 4060	3324	Local_wGRdnhmmy.exe	97
PID 2672 wrote to memory of 4072	2672	LocalM_d_cKXRrV.exe	99
PID 2672 wrote to memory of 4072	2672	LocalM_d_cKXRrV.exe	99
PID 2672 wrote to memory of 4072	2672	LocalM_d_cKXRrV.exe	99
PID 4072 wrote to memory of 4380	4072	server.exe	103
PID 4072 wrote to memory of 4380	4072	server.exe	103
PID 4072 wrote to memory of 4380	4072	server.exe	103

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\LisectAVT_2403002A_473.exe
"C:\Users\Admin\AppData\Local\Temp\LisectAVT_2403002A_473.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2656
- C:\Users\Admin\AppData\LocalM_d_cKXRrV.exe
  "C:\Users\Admin\AppData\LocalM_d_cKXRrV.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2672
- - C:\Users\Admin\server.exe
    "C:\Users\Admin\server.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:4072
  - - C:\Windows\SysWOW64\netsh.exe
      netsh firewall add allowedprogram "C:\Users\Admin\server.exe" "server.exe" ENABLE
      4⤵
      Modifies Windows Firewall
      Event Triggered Execution: Netsh Helper DLL
      System Location Discovery: System Language Discovery
      PID:4380
- C:\Users\Admin\AppData\LocalylmNBbjoFA.exe
  "C:\Users\Admin\AppData\LocalylmNBbjoFA.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - Suspicious use of WriteProcessMemory
  PID:4124
- - C:\Users\Admin\AppData\Local_wGRdnhmmy.exe
    "C:\Users\Admin\AppData\Local_wGRdnhmmy.exe"
    3⤵
    - Checks computer location settings
    - Executes dropped EXE
    - Adds Run key to start application
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:3324
  - - C:\Windows\System32\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "Local_wGRdnhmmy" /tr "C:\Users\Admin\AppData\Roaming\Local_wGRdnhmmy.exe"
      4⤵
      Scheduled Task/Job: Scheduled Task
      PID:4060
- - C:\Users\Admin\AppData\LocalwCRkvqzBqW.exe
    "C:\Users\Admin\AppData\LocalwCRkvqzBqW.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:3216
  - - C:\Users\Admin\AppData\Local\Temp\is-KEVJJ.tmp\LocalwCRkvqzBqW.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-KEVJJ.tmp\LocalwCRkvqzBqW.tmp" /SL5="$80066,5483573,1081856,C:\Users\Admin\AppData\LocalwCRkvqzBqW.exe"
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      PID:5096

C:\Users\Admin\AppData\Roaming\Local_wGRdnhmmy.exe
C:\Users\Admin\AppData\Roaming\Local_wGRdnhmmy.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1504

C:\Users\Admin\AppData\Roaming\Local_wGRdnhmmy.exe
C:\Users\Admin\AppData\Roaming\Local_wGRdnhmmy.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1844

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Impair Defenses

T1562

Disable or Modify System Firewall

T1562.004

Modify Registry

T1112

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

LocalM_d_cKXRrV.exe

Path C:\Users\Admin\AppData\LocalM_d_cKXRrV.exe
Size 37KB
SHA256 fde477cc2c0c2b39969d03f87ca7a1633492d4fb0261bd306272cee6a06e7924
MD5 d9008a8a000519606dfeffa4534ebea6
SHA1 a8afa2601ce88ffc6e4b708d18934d727e251c90
SHA512 8d314d0f3f5d4335693d635278c231a81ca77f0211f468ae98e9479bc2f370ad03d3e231b06fd29126e82194fb87263c686035741cf8b2985e55995b4e296984
SSDEEP 384:iM7KoixJNl7OHg1WykrVFX508e2/m0rAF+rMRTyN/0L+EcoinblneHQM3epzXnoK:J7+R1NkrVF6t2prM+rMRa8Nuhout
MD5 SHA1 SHA512 SSDEEP

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Local_wGRdnhmmy.exe.log

Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\Local_wGRdnhmmy.exe.log
Size 654B
SHA256 e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced
MD5 2ff39f6c7249774be85fd60a8f9a245e
SHA1 684ff36b31aedc1e587c8496c02722c6698c1c4e
SHA512 1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1
MD5 SHA1 SHA512

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LocalwCRkvqzBqW.tmp

Path C:\Users\Admin\AppData\Local\Temp\is-KEVJJ.tmp\LocalwCRkvqzBqW.tmp
Size 3.3MB
SHA256 4704e352b01d402d1a4436314c3dc29e5920c6b5829a8afbd4e9d2a2078882c4
MD5 20a49d1d5d967b96f0a856e5f4726626
SHA1 21285febc5c828b854f06e2dc4ea2a39d4da24ff
SHA512 462f9a288de1d5f0389254896ebf89350c1650fba1f3ef6c382f65c9772f4f5a65a8fd68f1c2106255426e1907a524d27365a8b13e77c7e74aa45427728d8e54
SSDEEP 49152:gWGtLBcXqFpBR6SVb8kq4pgquLMMji4NYxtJpkxhGjIHTbt333+A:EtLutqgwh4NYxtJpkxhGK3335
MD5 SHA1 SHA512 SSDEEP

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Local_wGRdnhmmy.exe

Path C:\Users\Admin\AppData\Local_wGRdnhmmy.exe
Size 68KB
SHA256 14f06b763b1f3b7e664e662de0e9ac0223af258b93bb5d1bdba430253b86bf1e
MD5 aa67d8767569da14eb97bffbd68b4891
SHA1 29809b563298600f7e17e9b60bed6611cf503588
SHA512 59ff893f57ffe39e9aed27c1a62468555f6d0b3aa26d5cd4b84b5af992e72389a8844bb0022fd0617194a5f70fa74e4ddc4b721643f3b15b5bd828adc12fd311
SSDEEP 1536:w1xFArxDNIKC9lm4Oa+bwJb5NDECiwjpBUV/JsiOo5r7zzZ:ixFArxGT2ub5NAqB4VOWnZ
MD5 SHA1 SHA512 SSDEEP

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LocalwCRkvqzBqW.exe

Path C:\Users\Admin\AppData\LocalwCRkvqzBqW.exe
Size 6.3MB
SHA256 2379582c4cf84a2424155f2930bd94ba18390de5cb5d7eea9f67140f67d92d0e
MD5 6c0447dffa3bf642fbfb2ed8852e0b6a
SHA1 cceb4556d3869bf5901f7bdb34c4cb0b437f9ef3
SHA512 2659e1e57cd2e5b6d091116b02e1b312f97da91698b6762961b0873cb866dfb04862769af85d95197e1edf259c30c37e969805d7f447578007616c740513feac
SSDEEP 196608:Omci4xQ81Y4AIBqxfOxlNbyJl1eO5KtTHCx7hD:0nxQQY4AHsxl0JTeOotY
MD5 SHA1 SHA512 SSDEEP

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LocalylmNBbjoFA.exe

Path C:\Users\Admin\AppData\LocalylmNBbjoFA.exe
Size 6.3MB
SHA256 27b7c59ffc430b81533bf2d0f961db114cd42cb560ef8955b5828e46ebd80bd3
MD5 a564d608712a46330cb0ead21be9ebe1
SHA1 446e6030cbb0ad5d6a809e98d7d4e2cb5dbd5eff
SHA512 e543a8d1a8f6ed86db9d1cf2076d3a26c525b72bd9be2823689798da33ce7ca4e4a1fef2e28004c70073240e67e9cb12e88d3b5a1e97e38bc7400325f5ac6a30
SSDEEP 196608:+mci4xQ81Y4AIBqxfOxlNbyJl1eO5KtTHCx7h:knxQQY4AHsxl0JTeOot
MD5 SHA1 SHA512 SSDEEP

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memory/2656-28-0x00007FF896CF0000-0x00007FF897691000-memory.dmp

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memory/2656-2-0x00007FF896CF0000-0x00007FF897691000-memory.dmp

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memory/2656-8-0x00007FF896CF0000-0x00007FF897691000-memory.dmp

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memory/2656-0-0x00007FF896FA5000-0x00007FF896FA6000-memory.dmp

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memory/2672-19-0x0000000074642000-0x0000000074643000-memory.dmp

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memory/2672-80-0x0000000074640000-0x0000000074BF1000-memory.dmp

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memory/2672-23-0x0000000074640000-0x0000000074BF1000-memory.dmp

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memory/3216-52-0x0000000000400000-0x0000000000515000-memory.dmp

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memory/3216-82-0x0000000000400000-0x0000000000515000-memory.dmp

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memory/3324-43-0x00000000007A0000-0x00000000007B8000-memory.dmp

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memory/4124-29-0x00007FF896CF0000-0x00007FF897691000-memory.dmp

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memory/4124-26-0x0000000001A50000-0x0000000001A60000-memory.dmp

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memory/4124-55-0x00007FF896CF0000-0x00007FF897691000-memory.dmp

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memory/4124-27-0x00007FF896FA5000-0x00007FF896FA6000-memory.dmp

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memory/5096-83-0x0000000000400000-0x0000000000751000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads