xworm | 1a2054fcc986058de7b392795325a85d83ce9612537457b7edd03e8f6ff8dc5b

General

Target

1a2054fcc986058de7b392795325a85d83ce9612537457b7edd03e8f6ff8dc5bN.exe
Size

91KB
MD5

758bace8cda039bf69fc0911e57c0b70
SHA1

cd38f2833fc1f3ef0935fea64835df0adb18224a
SHA256

1a2054fcc986058de7b392795325a85d83ce9612537457b7edd03e8f6ff8dc5b
SHA512

021c2eb621bc84d264cfe20334bfbe4981a69fb675bba9fc90db4c4fd26837daf0a8b69590d35bafb4860688af0d9a37142350a698964b09b24d162587780f90
SSDEEP

1536:It/CUcGlrtCdnbDfHmGROwzcWEniB6b6eOyRuC6ZN/9w7bOHjQPjn:kCqBCd/fhROw1EA6b6eTuFNFw7bODQLn

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

127.0.0.1:63419

Attributes

Install_directory
%AppData%
install_file
зсу.exe

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/memory/4112-1-0x00000000008D0000-0x00000000008EE000-memory.dmp	family_xworm
behavioral2/files/0x000b000000023424-56.dat	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
2968	powershell.exe
3140	powershell.exe
548	powershell.exe
5084	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-1-5-21-2718105630-359604950-2820636825-1000\Control Panel\International\Geo\Nation	1a2054fcc986058de7b392795325a85d83ce9612537457b7edd03e8f6ff8dc5bN.exe

Executes dropped EXE 2 IoCs

pid	Process
3228	зсу.exe
1976	зсу.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-1-5-21-2718105630-359604950-2820636825-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\зсу = "C:\\Users\\Admin\\AppData\\Roaming\\зсу.exe"	1a2054fcc986058de7b392795325a85d83ce9612537457b7edd03e8f6ff8dc5bN.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
1556	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
2968	powershell.exe
2968	powershell.exe
3140	powershell.exe
3140	powershell.exe
548	powershell.exe
548	powershell.exe
5084	powershell.exe
5084	powershell.exe
4112	1a2054fcc986058de7b392795325a85d83ce9612537457b7edd03e8f6ff8dc5bN.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	4112	1a2054fcc986058de7b392795325a85d83ce9612537457b7edd03e8f6ff8dc5bN.exe
Token: SeDebugPrivilege	2968	powershell.exe
Token: SeDebugPrivilege	3140	powershell.exe
Token: SeDebugPrivilege	548	powershell.exe
Token: SeDebugPrivilege	5084	powershell.exe
Token: SeDebugPrivilege	4112	1a2054fcc986058de7b392795325a85d83ce9612537457b7edd03e8f6ff8dc5bN.exe
Token: SeDebugPrivilege	3228	зсу.exe
Token: SeDebugPrivilege	1976	зсу.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4112	1a2054fcc986058de7b392795325a85d83ce9612537457b7edd03e8f6ff8dc5bN.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 4112 wrote to memory of 2968	4112	1a2054fcc986058de7b392795325a85d83ce9612537457b7edd03e8f6ff8dc5bN.exe	86
PID 4112 wrote to memory of 2968	4112	1a2054fcc986058de7b392795325a85d83ce9612537457b7edd03e8f6ff8dc5bN.exe	86
PID 4112 wrote to memory of 3140	4112	1a2054fcc986058de7b392795325a85d83ce9612537457b7edd03e8f6ff8dc5bN.exe	88
PID 4112 wrote to memory of 3140	4112	1a2054fcc986058de7b392795325a85d83ce9612537457b7edd03e8f6ff8dc5bN.exe	88
PID 4112 wrote to memory of 548	4112	1a2054fcc986058de7b392795325a85d83ce9612537457b7edd03e8f6ff8dc5bN.exe	90
PID 4112 wrote to memory of 548	4112	1a2054fcc986058de7b392795325a85d83ce9612537457b7edd03e8f6ff8dc5bN.exe	90
PID 4112 wrote to memory of 5084	4112	1a2054fcc986058de7b392795325a85d83ce9612537457b7edd03e8f6ff8dc5bN.exe	92
PID 4112 wrote to memory of 5084	4112	1a2054fcc986058de7b392795325a85d83ce9612537457b7edd03e8f6ff8dc5bN.exe	92
PID 4112 wrote to memory of 1556	4112	1a2054fcc986058de7b392795325a85d83ce9612537457b7edd03e8f6ff8dc5bN.exe	95
PID 4112 wrote to memory of 1556	4112	1a2054fcc986058de7b392795325a85d83ce9612537457b7edd03e8f6ff8dc5bN.exe	95

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\1a2054fcc986058de7b392795325a85d83ce9612537457b7edd03e8f6ff8dc5bN.exe
"C:\Users\Admin\AppData\Local\Temp\1a2054fcc986058de7b392795325a85d83ce9612537457b7edd03e8f6ff8dc5bN.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4112
- 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\1a2054fcc986058de7b392795325a85d83ce9612537457b7edd03e8f6ff8dc5bN.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2968
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess '1a2054fcc986058de7b392795325a85d83ce9612537457b7edd03e8f6ff8dc5bN.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3140
- 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\зсу.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:548
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'зсу.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:5084
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "зсу" /tr "C:\Users\Admin\AppData\Roaming\зсу.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:1556

C:\Users\Admin\AppData\Roaming\зсу.exe
C:\Users\Admin\AppData\Roaming\зсу.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3228

C:\Users\Admin\AppData\Roaming\зсу.exe
C:\Users\Admin\AppData\Roaming\зсу.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1976

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

Replay Monitor

Loading Replay Monitor...

Downloads

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\CLR_v4.0\UsageLogs\зсу.exe.log

Filesize
654B

MD5
2ff39f6c7249774be85fd60a8f9a245e

SHA1
684ff36b31aedc1e587c8496c02722c6698c1c4e

SHA256
e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced

SHA512
1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1

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
eb033be02578f9635ec47bdc1de5c3fb

SHA1
ec356bc87381354a06baa9c30e8c3ac3d30e0f6f

SHA256
bd827af3192bf83c75a32e51ed2de83bd3b90d6b99350721a189a57cec15d063

SHA512
4d8778503646f7016df73ff9d204760f4fe4d2b24157920ac3e5651653373975b2f2d229530143059f11b16c42822ad7963e628ad6066022ee712c17d90595ed

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

Filesize
944B

MD5
e7e044b359984899f97f0cd82ee44f3c

SHA1
a654639b5bf4ecf88c573dbcf94750b7995d9814

SHA256
225c40be10f6cab1046aa14ba6ef81389b20ee52caa137c89833ff6d33191f67

SHA512
92eb58b2289b17fc0894165ac52214d8a2161f99d21c018325ae87a9d1f904e17f0a7894b30050d7c202c3abddb9913dc25686449f9f9170731e7c6229861550

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_bhknhzh0.t1l.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Roaming\зсу.exe

Filesize
91KB

MD5
758bace8cda039bf69fc0911e57c0b70

SHA1
cd38f2833fc1f3ef0935fea64835df0adb18224a

SHA256
1a2054fcc986058de7b392795325a85d83ce9612537457b7edd03e8f6ff8dc5b

SHA512
021c2eb621bc84d264cfe20334bfbe4981a69fb675bba9fc90db4c4fd26837daf0a8b69590d35bafb4860688af0d9a37142350a698964b09b24d162587780f90

Download Submit
memory/2968-4-0x00007FF95A9B0000-0x00007FF95B471000-memory.dmp

Filesize
10.8MB

Download
memory/2968-18-0x00007FF95A9B0000-0x00007FF95B471000-memory.dmp

Filesize
10.8MB

Download
memory/2968-15-0x00007FF95A9B0000-0x00007FF95B471000-memory.dmp

Filesize
10.8MB

Download
memory/2968-14-0x0000020CECC80000-0x0000020CECCA2000-memory.dmp

Filesize
136KB

Download
memory/2968-3-0x00007FF95A9B0000-0x00007FF95B471000-memory.dmp

Filesize
10.8MB

Download
memory/4112-0-0x00007FF95A9B3000-0x00007FF95A9B5000-memory.dmp

Filesize
8KB

Download
memory/4112-54-0x00007FF95A9B3000-0x00007FF95A9B5000-memory.dmp

Filesize
8KB

Download
memory/4112-55-0x00007FF95A9B0000-0x00007FF95B471000-memory.dmp

Filesize
10.8MB

Download
memory/4112-2-0x00007FF95A9B0000-0x00007FF95B471000-memory.dmp

Filesize
10.8MB

Download
memory/4112-1-0x00000000008D0000-0x00000000008EE000-memory.dmp

Filesize
120KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads