xworm | b5e520b8f9aa8fba0e106406628802faf9fbc927bf2a09aba6270afe3b0a3c4c

General

Target

b5e520b8f9aa8fba0e106406628802faf9fbc927bf2a09aba6270afe3b0a3c4c.exe
Size

59KB
MD5

13f8ea6f22766a2a3fab7161647b1d00
SHA1

af696ffbb96d8dbb29077ab11c4d2f91f73b618a
SHA256

b5e520b8f9aa8fba0e106406628802faf9fbc927bf2a09aba6270afe3b0a3c4c
SHA512

c0903a9880f4560797fa3dcac362990969529811acdbebf78108ca53a636065d3f1915a73e2a6caa7fc059b2b5561d972b4aa62fdb83d1fe8c4116b2294cd9eb
SSDEEP

1536:zDT94NmEa2JFvnkbAqjniRfi6N+yOUtvJ7:vTvEa2JhkbAq+xOcvJ7

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

127.0.0.1:9935

additional-ll.gl.at.ply.gg:9935

Attributes

Install_directory
%AppData%
install_file
solara.exe

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral2/memory/1928-1-0x00000000002E0000-0x00000000002F6000-memory.dmp	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
1932	powershell.exe
436	powershell.exe
3108	powershell.exe
1332	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-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	b5e520b8f9aa8fba0e106406628802faf9fbc927bf2a09aba6270afe3b0a3c4c.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\solara.lnk	b5e520b8f9aa8fba0e106406628802faf9fbc927bf2a09aba6270afe3b0a3c4c.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\solara.lnk	b5e520b8f9aa8fba0e106406628802faf9fbc927bf2a09aba6270afe3b0a3c4c.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-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\solara = "C:\\Users\\Admin\\AppData\\Roaming\\solara.exe"	b5e520b8f9aa8fba0e106406628802faf9fbc927bf2a09aba6270afe3b0a3c4c.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
1932	powershell.exe
1932	powershell.exe
436	powershell.exe
436	powershell.exe
3108	powershell.exe
3108	powershell.exe
1332	powershell.exe
1332	powershell.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	1928	b5e520b8f9aa8fba0e106406628802faf9fbc927bf2a09aba6270afe3b0a3c4c.exe
Token: SeDebugPrivilege	1932	powershell.exe
Token: SeDebugPrivilege	436	powershell.exe
Token: SeDebugPrivilege	3108	powershell.exe
Token: SeDebugPrivilege	1332	powershell.exe
Token: SeDebugPrivilege	1928	b5e520b8f9aa8fba0e106406628802faf9fbc927bf2a09aba6270afe3b0a3c4c.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1928 wrote to memory of 1932	1928	b5e520b8f9aa8fba0e106406628802faf9fbc927bf2a09aba6270afe3b0a3c4c.exe	87
PID 1928 wrote to memory of 1932	1928	b5e520b8f9aa8fba0e106406628802faf9fbc927bf2a09aba6270afe3b0a3c4c.exe	87
PID 1928 wrote to memory of 436	1928	b5e520b8f9aa8fba0e106406628802faf9fbc927bf2a09aba6270afe3b0a3c4c.exe	89
PID 1928 wrote to memory of 436	1928	b5e520b8f9aa8fba0e106406628802faf9fbc927bf2a09aba6270afe3b0a3c4c.exe	89
PID 1928 wrote to memory of 3108	1928	b5e520b8f9aa8fba0e106406628802faf9fbc927bf2a09aba6270afe3b0a3c4c.exe	93
PID 1928 wrote to memory of 3108	1928	b5e520b8f9aa8fba0e106406628802faf9fbc927bf2a09aba6270afe3b0a3c4c.exe	93
PID 1928 wrote to memory of 1332	1928	b5e520b8f9aa8fba0e106406628802faf9fbc927bf2a09aba6270afe3b0a3c4c.exe	95
PID 1928 wrote to memory of 1332	1928	b5e520b8f9aa8fba0e106406628802faf9fbc927bf2a09aba6270afe3b0a3c4c.exe	95

C:\Users\Admin\AppData\Local\Temp\b5e520b8f9aa8fba0e106406628802faf9fbc927bf2a09aba6270afe3b0a3c4c.exe
"C:\Users\Admin\AppData\Local\Temp\b5e520b8f9aa8fba0e106406628802faf9fbc927bf2a09aba6270afe3b0a3c4c.exe"
1⤵
- Checks computer location settings
- Drops startup file
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1928
- 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\b5e520b8f9aa8fba0e106406628802faf9fbc927bf2a09aba6270afe3b0a3c4c.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1932
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'b5e520b8f9aa8fba0e106406628802faf9fbc927bf2a09aba6270afe3b0a3c4c.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:436
- 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\solara.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3108
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'solara.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1332

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
77d622bb1a5b250869a3238b9bc1402b

SHA1
d47f4003c2554b9dfc4c16f22460b331886b191b

SHA256
f97ff12a8abf4bf88bb6497bd2ac2da12628c8847a8ba5a9026bdbb76507cdfb

SHA512
d6789b5499f23c9035375a102271e17a8a82e57d6f5312fa24242e08a83efdeb8becb7622f55c4cf1b89c7d864b445df11f4d994cf7e2f87a900535bcca12fd9

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

Filesize
944B

MD5
9072d3c4faa83ef0f5ed5b299b75618d

SHA1
f2bb8ee12abae6da1406fc566810ce397f1d054b

SHA256
9f9196488c5ae1227d43941675252f2399ef20aebba80ed6a829822104c40475

SHA512
a7bb981438e7d0932291531f49c00ca2b57a5c44cedede2b81f5a6abeefb4f00434e0c2edb2d3ad33c21e61e88091042f9d783f9fd39b18cfd1306b450f1f6bb

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\Temp\__PSScriptPolicyTest_dm2xmciy.vau.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1928-0-0x00007FF849F10000-0x00007FF84A105000-memory.dmp

Filesize
2.0MB

Download
memory/1928-1-0x00000000002E0000-0x00000000002F6000-memory.dmp

Filesize
88KB

Download
memory/1928-56-0x00007FF849F10000-0x00007FF84A105000-memory.dmp

Filesize
2.0MB

Download
memory/1928-57-0x00007FF849F10000-0x00007FF84A105000-memory.dmp

Filesize
2.0MB

Download
memory/1928-58-0x00007FF849F10000-0x00007FF84A105000-memory.dmp

Filesize
2.0MB

Download
memory/1932-10-0x000001B3FFF10000-0x000001B3FFF32000-memory.dmp

Filesize
136KB

Download
memory/1932-17-0x00007FF849F10000-0x00007FF84A105000-memory.dmp

Filesize
2.0MB

Download
memory/1932-4-0x00007FF849F10000-0x00007FF84A105000-memory.dmp

Filesize
2.0MB

Download
memory/1932-3-0x00007FF849F10000-0x00007FF84A105000-memory.dmp

Filesize
2.0MB

Download
memory/1932-2-0x00007FF849F10000-0x00007FF84A105000-memory.dmp

Filesize
2.0MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads