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/4432-1-0x0000000000DE0000-0x0000000000DF8000-memory.dmp	family_xworm
behavioral2/files/0x000b000000023c94-58.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
4972	powershell.exe
4108	powershell.exe
1796	powershell.exe
1356	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	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 2 IoCs

pid	Process
3332	Bar2lecb
5012	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-1-5-21-2437139445-1151884604-3026847218-1000\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
12	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
4692	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
4972	powershell.exe
4972	powershell.exe
4108	powershell.exe
4108	powershell.exe
1796	powershell.exe
1796	powershell.exe
1356	powershell.exe
1356	powershell.exe
4432	555.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	4432	555.exe
Token: SeDebugPrivilege	4972	powershell.exe
Token: SeDebugPrivilege	4108	powershell.exe
Token: SeDebugPrivilege	1796	powershell.exe
Token: SeDebugPrivilege	1356	powershell.exe
Token: SeDebugPrivilege	4432	555.exe
Token: SeDebugPrivilege	3332	Bar2lecb
Token: SeDebugPrivilege	5012	Bar2lecb

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4432	555.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 4432 wrote to memory of 4972	4432	555.exe	87
PID 4432 wrote to memory of 4972	4432	555.exe	87
PID 4432 wrote to memory of 4108	4432	555.exe	89
PID 4432 wrote to memory of 4108	4432	555.exe	89
PID 4432 wrote to memory of 1796	4432	555.exe	91
PID 4432 wrote to memory of 1796	4432	555.exe	91
PID 4432 wrote to memory of 1356	4432	555.exe	93
PID 4432 wrote to memory of 1356	4432	555.exe	93
PID 4432 wrote to memory of 4692	4432	555.exe	97
PID 4432 wrote to memory of 4692	4432	555.exe	97

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:4432
- 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:4972
- 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:4108
- 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:1796
- 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:1356
- 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:4692

C:\Users\Admin\Bar2lecb
C:\Users\Admin\Bar2lecb
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3332

C:\Users\Admin\Bar2lecb
C:\Users\Admin\Bar2lecb
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:5012

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
77d622bb1a5b250869a3238b9bc1402b

SHA1
d47f4003c2554b9dfc4c16f22460b331886b191b

SHA256
f97ff12a8abf4bf88bb6497bd2ac2da12628c8847a8ba5a9026bdbb76507cdfb

SHA512
d6789b5499f23c9035375a102271e17a8a82e57d6f5312fa24242e08a83efdeb8becb7622f55c4cf1b89c7d864b445df11f4d994cf7e2f87a900535bcca12fd9

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

Filesize
944B

MD5
04e3a7202ed5b4849a35647acd21f1a4

SHA1
ea21c6adcb096afebbcc1f2a8c37d847c059a514

SHA256
ae20908ddc30cb4ea598d72672027a627ed009fdef44a317625587e5850fd9ed

SHA512
7df3a4be1e0227a10025fb79a954147ae82f7e9ec1fbd36a6ed83e8781efa16c86f9849df047119624f01326fa2cb159ecc189bcd5ed99aa752991c9aa99f4ac

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

Filesize
944B

MD5
22310ad6749d8cc38284aa616efcd100

SHA1
440ef4a0a53bfa7c83fe84326a1dff4326dcb515

SHA256
55b1d8021c4eb4c3c0d75e3ed7a4eb30cd0123e3d69f32eeb596fe4ffec05abf

SHA512
2ef08e2ee15bb86695fe0c10533014ffed76ececc6e579d299d3365fafb7627f53e32e600bb6d872b9f58aca94f8cb7e1e94cdfd14777527f7f0aa019d9c6def

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_r2bmbb4x.255.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/4432-2-0x00007FF9D97A0000-0x00007FF9DA261000-memory.dmp

Filesize
10.8MB

Download
memory/4432-1-0x0000000000DE0000-0x0000000000DF8000-memory.dmp

Filesize
96KB

Download
memory/4432-0-0x00007FF9D97A3000-0x00007FF9D97A5000-memory.dmp

Filesize
8KB

Download
memory/4432-61-0x00000000015C0000-0x00000000015CC000-memory.dmp

Filesize
48KB

Download
memory/4432-57-0x00007FF9D97A0000-0x00007FF9DA261000-memory.dmp

Filesize
10.8MB

Download
memory/4432-53-0x00007FF9D97A3000-0x00007FF9D97A5000-memory.dmp

Filesize
8KB

Download
memory/4972-4-0x00007FF9D97A0000-0x00007FF9DA261000-memory.dmp

Filesize
10.8MB

Download
memory/4972-18-0x00007FF9D97A0000-0x00007FF9DA261000-memory.dmp

Filesize
10.8MB

Download
memory/4972-15-0x00007FF9D97A0000-0x00007FF9DA261000-memory.dmp

Filesize
10.8MB

Download
memory/4972-14-0x00007FF9D97A0000-0x00007FF9DA261000-memory.dmp

Filesize
10.8MB

Download
memory/4972-3-0x0000021936BD0000-0x0000021936BF2000-memory.dmp

Filesize
136KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads