xworm | 5fb96191ad7394700966c0854e3f1225b8b2989f528ce6993a747ff7a9cf2552

General

Target

XClient.exe
Size

67KB
MD5

c9cd80d55733208fc06b8b52cddb52dc
SHA1

6cc60302d90e7d7661b5b194fa954efacba19d49
SHA256

5fb96191ad7394700966c0854e3f1225b8b2989f528ce6993a747ff7a9cf2552
SHA512

befca56bfce924e50c11f9d702ab2d6a6e05d55cd4399c4ac37891c1d337a43d05060f5cb9a1600fc4c172f7816fad14bc02e0c8d44eb82b55f61da4812cd0aa
SSDEEP

1536:n5ydgkcoaOOTxMH/W0WybZYgmH2r2i6urYiZOenvefZ3:FVxMfwybZ4rYXZOewZ3

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

silver-bowl.gl.at.ply.gg:29206

Attributes

Install_directory
%AppData%
install_file
XClient.exe

Extracted

Family

xworm

Version

3.0

C2

plus-loves.gl.at.ply.gg:59327

Attributes

Install_directory
%AppData%
install_file
USB.exe

Signatures

Detect Xworm Payload 3 IoCs

resource	yara_rule
behavioral2/memory/2960-1-0x00000000008F0000-0x0000000000908000-memory.dmp	family_xworm
behavioral2/files/0x0012000000023256-75.dat	family_xworm
behavioral2/memory/2440-82-0x0000000000D80000-0x0000000000DB4000-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
1464	powershell.exe
3096	powershell.exe
1652	powershell.exe
3744	powershell.exe

Downloads MZ/PE file

Checks computer location settings 2 TTPs 2 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	XClient.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	DUTWIOIJLVIEVXQ.exe

Drops startup file 4 IoCs

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

Executes dropped EXE 3 IoCs

pid	Process
2440	DUTWIOIJLVIEVXQ.exe
4924	DUTWIOIJLVIEVXQ.exe
2988	DUTWIOIJLVIEVXQ.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\DUTWIOIJLVIEVXQ = "C:\\Users\\Admin\\AppData\\Roaming\\DUTWIOIJLVIEVXQ.exe"	DUTWIOIJLVIEVXQ.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
50	raw.githubusercontent.com
51	raw.githubusercontent.com

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
7	ip-api.com

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

System Information Discovery
T1082

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
3568	schtasks.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
1464	powershell.exe
1464	powershell.exe
3096	powershell.exe
3096	powershell.exe
1652	powershell.exe
1652	powershell.exe
3744	powershell.exe
3744	powershell.exe

Suspicious use of AdjustPrivilegeToken 12 IoCs

description	pid	Process
Token: SeDebugPrivilege	2960	XClient.exe
Token: SeDebugPrivilege	1464	powershell.exe
Token: SeDebugPrivilege	3096	powershell.exe
Token: SeDebugPrivilege	1652	powershell.exe
Token: SeDebugPrivilege	3744	powershell.exe
Token: SeDebugPrivilege	2960	XClient.exe
Token: SeDebugPrivilege	2440	DUTWIOIJLVIEVXQ.exe
Token: SeDebugPrivilege	2440	DUTWIOIJLVIEVXQ.exe
Token: SeDebugPrivilege	4924	DUTWIOIJLVIEVXQ.exe
Token: 33	4940	AUDIODG.EXE
Token: SeIncBasePriorityPrivilege	4940	AUDIODG.EXE
Token: SeDebugPrivilege	2988	DUTWIOIJLVIEVXQ.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2960	XClient.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2960 wrote to memory of 1464	2960	XClient.exe	91
PID 2960 wrote to memory of 1464	2960	XClient.exe	91
PID 2960 wrote to memory of 3096	2960	XClient.exe	93
PID 2960 wrote to memory of 3096	2960	XClient.exe	93
PID 2960 wrote to memory of 1652	2960	XClient.exe	95
PID 2960 wrote to memory of 1652	2960	XClient.exe	95
PID 2960 wrote to memory of 3744	2960	XClient.exe	97
PID 2960 wrote to memory of 3744	2960	XClient.exe	97
PID 2960 wrote to memory of 2440	2960	XClient.exe	106
PID 2960 wrote to memory of 2440	2960	XClient.exe	106
PID 2440 wrote to memory of 3568	2440	DUTWIOIJLVIEVXQ.exe	108
PID 2440 wrote to memory of 3568	2440	DUTWIOIJLVIEVXQ.exe	108

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\XClient.exe
"C:\Users\Admin\AppData\Local\Temp\XClient.exe"
1⤵
- Checks computer location settings
- Drops startup file
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:2960
- 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\XClient.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1464
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'XClient.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3096
- 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\Roaming\XClient.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1652
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'XClient.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3744
- C:\Users\Admin\AppData\Local\Temp\DUTWIOIJLVIEVXQ.exe
  "C:\Users\Admin\AppData\Local\Temp\DUTWIOIJLVIEVXQ.exe"
  2⤵
  - Checks computer location settings
  - Drops startup file
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2440
- - C:\Windows\System32\schtasks.exe
    "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "DUTWIOIJLVIEVXQ" /tr "C:\Users\Admin\AppData\Roaming\DUTWIOIJLVIEVXQ.exe"
    3⤵
    - Creates scheduled task(s)
    PID:3568

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=1352 --field-trial-handle=2280,i,716736634476467098,11449718822158202904,262144 --variations-seed-version /prefetch:8
1⤵
PID:3688

C:\Users\Admin\AppData\Roaming\DUTWIOIJLVIEVXQ.exe
C:\Users\Admin\AppData\Roaming\DUTWIOIJLVIEVXQ.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4924

C:\Windows\system32\AUDIODG.EXE
C:\Windows\system32\AUDIODG.EXE 0x4d8 0x3d4
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:4940

C:\Users\Admin\AppData\Roaming\DUTWIOIJLVIEVXQ.exe
C:\Users\Admin\AppData\Roaming\DUTWIOIJLVIEVXQ.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2988

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

Scheduled Task/Job

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

Scheduled Task/Job

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

Scheduled Task/Job

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Web Service

1

T1102

Exfiltration

Impact

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Downloads

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

Filesize
654B

MD5
2ff39f6c7249774be85fd60a8f9a245e

SHA1
684ff36b31aedc1e587c8496c02722c6698c1c4e

SHA256
e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced

SHA512
1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1

Download Submit
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
bd5940f08d0be56e65e5f2aaf47c538e

SHA1
d7e31b87866e5e383ab5499da64aba50f03e8443

SHA256
2d2f364c75bd2897504249f42cdf1d19374f5230aad68fa9154ea3d03e3031a6

SHA512
c34d10c7e07da44a180fae9889b61f08903aa84e8ddfa80c31c272b1ef9d491b8cec6b8a4c836c3cb1583fe8f4955c6a8db872515de3a9e10eae09610c959406

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

Filesize
944B

MD5
ef72c47dbfaae0b9b0d09f22ad4afe20

SHA1
5357f66ba69b89440b99d4273b74221670129338

SHA256
692ec20c7039170fb199510f0436181fd155e6b4516d4d1c9e1675adf99aaa7f

SHA512
7514b6bc8dc39fa618223300be27cd535dc35b18c66b4a089e2302e72b3e0cac06d88a989fa1296feb386b3cbe2084019df6430c7f895071b76e04ce559a30b4

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

Filesize
944B

MD5
ab24765a7393bd3cef8acbf0a617fba2

SHA1
ef2c12a457a11f6204344afed09a39f4d3e803cb

SHA256
3a03c7efabe880ae9f283b1cf373d3f09d07ab619028319b3599b643ae140d47

SHA512
e16306674a8c89f54467d7fba3857e1e0bdf3729f5de9f4451520cfbddfa535c4d653dde6efcac38efd693e9b3e4965fcd08c559e720c372feca65050b46e355

Download Submit
C:\Users\Admin\AppData\Local\Temp\DUTWIOIJLVIEVXQ.exe

Filesize
185KB

MD5
e0c8976957ffdc4fe5555adbe8cb0d0c

SHA1
226a764bacfa17b92131993aa85fe63f1dbf347c

SHA256
b8260ac46e03f2a7baa9ae01bee5443d16d9eb96f6ee8588a887d6de72a750d4

SHA512
3a1ea48e81ebfd5586938a72afd68bcc48d4c5d69949cfdacf33aee3371d98f202443f5db12bac876ca7cecc982ddc56827f8d9b1857d22bda71242d5b2cc71e

Download Submit
C:\Users\Admin\AppData\Local\Temp\T9OQ3CCZ99IBWTB.exe

Filesize
4KB

MD5
376b9f7d42c2931c70dce613d9365b33

SHA1
ed647069236227e15a6af9dc7751d09c0846bf6e

SHA256
7b925997a63520b61a49ad2b62008b4ae41b7877639a716adc86f6d28aea0f77

SHA512
9dfd00a8f2e2d8e1c6823481fa17cbad4b05017359fbd701377525d4347dc7609280be5b0f9b5a82b541cfabf2cc2e698bacf8e07750156a3bd53a8d962abe54

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_xo050a3j.xkx.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1464-3-0x0000028F26560000-0x0000028F26582000-memory.dmp

Filesize
136KB

Download
memory/1464-18-0x00007FFEAC100000-0x00007FFEACBC1000-memory.dmp

Filesize
10.8MB

Download
memory/1464-21-0x00007FFEAC100000-0x00007FFEACBC1000-memory.dmp

Filesize
10.8MB

Download
memory/1464-14-0x00007FFEAC100000-0x00007FFEACBC1000-memory.dmp

Filesize
10.8MB

Download
memory/1464-16-0x00007FFEAC100000-0x00007FFEACBC1000-memory.dmp

Filesize
10.8MB

Download
memory/1464-4-0x00007FFEAC100000-0x00007FFEACBC1000-memory.dmp

Filesize
10.8MB

Download
memory/1464-15-0x00007FFEAC100000-0x00007FFEACBC1000-memory.dmp

Filesize
10.8MB

Download
memory/2440-82-0x0000000000D80000-0x0000000000DB4000-memory.dmp

Filesize
208KB

Download
memory/2960-61-0x000000001B590000-0x000000001B59C000-memory.dmp

Filesize
48KB

Download
memory/2960-0-0x00007FFEAC103000-0x00007FFEAC105000-memory.dmp

Filesize
8KB

Download
memory/2960-55-0x00007FFEAC100000-0x00007FFEACBC1000-memory.dmp

Filesize
10.8MB

Download
memory/2960-2-0x00007FFEAC100000-0x00007FFEACBC1000-memory.dmp

Filesize
10.8MB

Download
memory/2960-17-0x00007FFEAC103000-0x00007FFEAC105000-memory.dmp

Filesize
8KB

Download
memory/2960-95-0x00000000010C0000-0x00000000010CA000-memory.dmp

Filesize
40KB

Download
memory/2960-100-0x000000001CE70000-0x000000001CF20000-memory.dmp

Filesize
704KB

Download
memory/2960-101-0x0000000020BB0000-0x00000000210D8000-memory.dmp

Filesize
5.2MB

Download
memory/2960-1-0x00000000008F0000-0x0000000000908000-memory.dmp

Filesize
96KB

Download

Resubmissions

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads