xworm | 96d7f2474c300d7f24cd2635f03d52fe40964a030787d9e84dd1fedbb5618691

General

Target

555.exe
Size

73KB
MD5

a419ffb32ad6422938129688d39a898f
SHA1

303695e2f43566685c568ca670133b0d717eabcf
SHA256

96d7f2474c300d7f24cd2635f03d52fe40964a030787d9e84dd1fedbb5618691
SHA512

6a145de4ee6d26b1ee8be5cc22f7888291b8544ea8323f425da8ecfafdf79d961164ddd3c3eaf5a5d7abaa6208e5539c2ea8d2685440e81c6eea2248f8552e9f
SSDEEP

1536:v2oktWbR7i2wiOXObYzDVSUbLUSsr36xOwGZtadQAa:v2ocs7iaOebHUbLGcOwGCdfa

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

house-jungle.gl.at.ply.gg:14868

Attributes

Install_directory
%Userprofile%
install_file
USB.exe

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/memory/1968-1-0x0000000000590000-0x00000000005A8000-memory.dmp	family_xworm
behavioral2/files/0x000e000000023b8c-59.dat	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
2168	powershell.exe
4996	powershell.exe
1128	powershell.exe
2676	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-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	555.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Bar2lecb.lnk	555.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Bar2lecb.lnk	555.exe

Executes dropped EXE 3 IoCs

pid	Process
2612	Bar2lecb
4676	Bar2lecb
4400	Bar2lecb

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-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Bar2lecb = "C:\\Users\\Admin\\Bar2lecb"	555.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
14	ip-api.com

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

System Information Discovery
T1082

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
3704	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
2168	powershell.exe
2168	powershell.exe
4996	powershell.exe
4996	powershell.exe
1128	powershell.exe
1128	powershell.exe
2676	powershell.exe
2676	powershell.exe
1968	555.exe

Suspicious use of AdjustPrivilegeToken 9 IoCs

description	pid	Process
Token: SeDebugPrivilege	1968	555.exe
Token: SeDebugPrivilege	2168	powershell.exe
Token: SeDebugPrivilege	4996	powershell.exe
Token: SeDebugPrivilege	1128	powershell.exe
Token: SeDebugPrivilege	2676	powershell.exe
Token: SeDebugPrivilege	1968	555.exe
Token: SeDebugPrivilege	2612	Bar2lecb
Token: SeDebugPrivilege	4676	Bar2lecb
Token: SeDebugPrivilege	4400	Bar2lecb

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1968	555.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 1968 wrote to memory of 2168	1968	555.exe	83
PID 1968 wrote to memory of 2168	1968	555.exe	83
PID 1968 wrote to memory of 4996	1968	555.exe	85
PID 1968 wrote to memory of 4996	1968	555.exe	85
PID 1968 wrote to memory of 1128	1968	555.exe	87
PID 1968 wrote to memory of 1128	1968	555.exe	87
PID 1968 wrote to memory of 2676	1968	555.exe	89
PID 1968 wrote to memory of 2676	1968	555.exe	89
PID 1968 wrote to memory of 3704	1968	555.exe	91
PID 1968 wrote to memory of 3704	1968	555.exe	91

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\555.exe
"C:\Users\Admin\AppData\Local\Temp\555.exe"
1⤵
- Checks computer location settings
- Drops startup file
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1968
- 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\555.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2168
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess '555.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4996
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\Bar2lecb'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1128
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Bar2lecb'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2676
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "Bar2lecb" /tr "C:\Users\Admin\Bar2lecb"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:3704

C:\Users\Admin\Bar2lecb
C:\Users\Admin\Bar2lecb
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2612

C:\Users\Admin\Bar2lecb
C:\Users\Admin\Bar2lecb
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4676

C:\Users\Admin\Bar2lecb
C:\Users\Admin\Bar2lecb
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4400

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\Bar2lecb.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
83685d101174171875b4a603a6c2a35c

SHA1
37be24f7c4525e17fa18dbd004186be3a9209017

SHA256
0c557845aab1da497bbff0e8fbe65cabf4cb2804b97ba8ae8c695a528af70870

SHA512
005a97a8e07b1840abdcef86a7881fd9bdc8acbfdf3eafe1dceb6374060626d81d789e57d87ca4096a39e28d5cca00f8945edff0a747591691ae75873d2b3fb5

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

Filesize
944B

MD5
5cfe303e798d1cc6c1dab341e7265c15

SHA1
cd2834e05191a24e28a100f3f8114d5a7708dc7c

SHA256
c4d16552769ca1762f6867bce85589c645ac3dc490b650083d74f853f898cfab

SHA512
ef151bbe0033a2caf2d40aff74855a3f42c8171e05a11c8ce93c7039d9430482c43fe93d9164ee94839aff253cad774dbf619dde9a8af38773ca66d59ac3400e

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_wis44lnq.uoh.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\Bar2lecb

Filesize
73KB

MD5
a419ffb32ad6422938129688d39a898f

SHA1
303695e2f43566685c568ca670133b0d717eabcf

SHA256
96d7f2474c300d7f24cd2635f03d52fe40964a030787d9e84dd1fedbb5618691

SHA512
6a145de4ee6d26b1ee8be5cc22f7888291b8544ea8323f425da8ecfafdf79d961164ddd3c3eaf5a5d7abaa6208e5539c2ea8d2685440e81c6eea2248f8552e9f

Download Submit
memory/1968-1-0x0000000000590000-0x00000000005A8000-memory.dmp

Filesize
96KB

Download
memory/1968-2-0x00007FFA494B0000-0x00007FFA49F71000-memory.dmp

Filesize
10.8MB

Download
memory/1968-58-0x00007FFA494B0000-0x00007FFA49F71000-memory.dmp

Filesize
10.8MB

Download
memory/1968-0-0x00007FFA494B3000-0x00007FFA494B5000-memory.dmp

Filesize
8KB

Download
memory/2168-18-0x000001456DED0000-0x000001456E0EC000-memory.dmp

Filesize
2.1MB

Download
memory/2168-19-0x00007FFA494B0000-0x00007FFA49F71000-memory.dmp

Filesize
10.8MB

Download
memory/2168-15-0x00007FFA494B0000-0x00007FFA49F71000-memory.dmp

Filesize
10.8MB

Download
memory/2168-14-0x00007FFA494B0000-0x00007FFA49F71000-memory.dmp

Filesize
10.8MB

Download
memory/2168-9-0x000001456DEA0000-0x000001456DEC2000-memory.dmp

Filesize
136KB

Download
memory/2168-3-0x00007FFA494B0000-0x00007FFA49F71000-memory.dmp

Filesize
10.8MB

Download
memory/4996-32-0x00000207F9F70000-0x00000207FA18C000-memory.dmp

Filesize
2.1MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads