xworm | 9a41404dca669ab7ae093eae45c01d0b8c6e31df93feed36bd39950f8d23b301

General

Target

FifFaf3.exe
Size

75KB
MD5

3ec64788de487a611bc255a1c2d4e532
SHA1

955c425b7367a4f844e22092e97a64bb6ac092a8
SHA256

9a41404dca669ab7ae093eae45c01d0b8c6e31df93feed36bd39950f8d23b301
SHA512

6c9a14f7c0fee940c0e3d42f5f43ec0937b358d1b5e67e8124c45196626e0c1ea1026506ed6a1d67b0bd63b9d9dfa4937eaff8e32291fa4685a992f386316b68
SSDEEP

1536:Y0XP2FWP19ugE7B2yWCUy8TpbRA+ac5G63SuUEhiOsy34Cqg:m7TWO8dbRAo5RpEOsy34Cr

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

george-continental.gl.at.ply.gg:25128:1000

Attributes

Install_directory
%AppData%
install_file
SolaraBETA.exe

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral2/memory/4868-1-0x0000000000FD0000-0x0000000000FEA000-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
2136	powershell.exe
3408	powershell.exe
3504	powershell.exe
2900	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-1-5-21-2170637797-568393320-3232933035-1000\Control Panel\International\Geo\Nation	FifFaf3.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-1-5-21-2170637797-568393320-3232933035-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SolaraBETA = "C:\\Users\\Admin\\AppData\\Roaming\\SolaraBETA.exe"	FifFaf3.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
15	ip-api.com

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 14 IoCs

pid	Process
3504	powershell.exe
3504	powershell.exe
3504	powershell.exe
2900	powershell.exe
2900	powershell.exe
2900	powershell.exe
2136	powershell.exe
2136	powershell.exe
2136	powershell.exe
3408	powershell.exe
3408	powershell.exe
3408	powershell.exe
4868	FifFaf3.exe
4868	FifFaf3.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	4868	FifFaf3.exe
Token: SeDebugPrivilege	3504	powershell.exe
Token: SeDebugPrivilege	2900	powershell.exe
Token: SeDebugPrivilege	2136	powershell.exe
Token: SeDebugPrivilege	3408	powershell.exe
Token: SeDebugPrivilege	4868	FifFaf3.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4868	FifFaf3.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 4868 wrote to memory of 3504	4868	FifFaf3.exe	98
PID 4868 wrote to memory of 3504	4868	FifFaf3.exe	98
PID 4868 wrote to memory of 2900	4868	FifFaf3.exe	100
PID 4868 wrote to memory of 2900	4868	FifFaf3.exe	100
PID 4868 wrote to memory of 2136	4868	FifFaf3.exe	104
PID 4868 wrote to memory of 2136	4868	FifFaf3.exe	104
PID 4868 wrote to memory of 3408	4868	FifFaf3.exe	106
PID 4868 wrote to memory of 3408	4868	FifFaf3.exe	106

C:\Users\Admin\AppData\Local\Temp\FifFaf3.exe
"C:\Users\Admin\AppData\Local\Temp\FifFaf3.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:4868
- 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\FifFaf3.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3504
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'FifFaf3.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2900
- 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\SolaraBETA.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2136
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'SolaraBETA.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3408

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 --field-trial-handle=3808,i,3387628439405076340,17957358341235678872,262144 --variations-seed-version --mojo-platform-channel-handle=1892 /prefetch:8
1⤵
PID:212

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

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\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
6d3e9c29fe44e90aae6ed30ccf799ca8

SHA1
c7974ef72264bbdf13a2793ccf1aed11bc565dce

SHA256
2360634e63e8f0b5748e2c56ebb8f4aa78e71008ea7b5c9ca1c49be03b49557d

SHA512
60c38c4367352537545d859f64b9c5cbada94240478d1d039fd27b5ecba4dc1c90051557c16d802269703b873546ead416279c0a80c6fd5e49ad361cef22596a

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

Filesize
944B

MD5
481c1608c2bec426ca209e8800611abd

SHA1
5df5a08760b0e5c56cb9daf768894435354d2651

SHA256
44e538c7570e175634f9929d350a79203730fcb753638f611a1dd4780ec430ed

SHA512
5a87762225beffbd34048fd0d617a75eff25ca6dfe47c258cdfad8c841f8b0b4144ae8c7ef04ee5de36987cb6ae0953499d5fa27b2100483a8042ee5e27d190c

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

Filesize
944B

MD5
0a7dafd4af6ce4631e060c6f6896935e

SHA1
6d56bec43b43f2141b581c28d1928689b556df25

SHA256
ca04a16d6f41b98c5df52fe878d44d913c7b4400497441e6d11a1b41d4298119

SHA512
8159d4de8ff4f425b3ffbede9b420f749f0394183df823e39dba01e1d511b697ed4b60f84c46f7165c473610e1699882b4109af5c4ccfafa000c3846a08d3fac

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_fegx4b24.jpm.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/3504-3-0x00007FFE6A5D0000-0x00007FFE6B091000-memory.dmp

Filesize
10.8MB

Download
memory/3504-10-0x0000018E3B0F0000-0x0000018E3B112000-memory.dmp

Filesize
136KB

Download
memory/3504-15-0x00007FFE6A5D0000-0x00007FFE6B091000-memory.dmp

Filesize
10.8MB

Download
memory/3504-18-0x00007FFE6A5D0000-0x00007FFE6B091000-memory.dmp

Filesize
10.8MB

Download
memory/3504-4-0x00007FFE6A5D0000-0x00007FFE6B091000-memory.dmp

Filesize
10.8MB

Download
memory/4868-1-0x0000000000FD0000-0x0000000000FEA000-memory.dmp

Filesize
104KB

Download
memory/4868-2-0x00007FFE6A5D0000-0x00007FFE6B091000-memory.dmp

Filesize
10.8MB

Download
memory/4868-42-0x00007FFE6A5D3000-0x00007FFE6A5D5000-memory.dmp

Filesize
8KB

Download
memory/4868-0-0x00007FFE6A5D3000-0x00007FFE6A5D5000-memory.dmp

Filesize
8KB

Download
memory/4868-55-0x00007FFE6A5D0000-0x00007FFE6B091000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads