umbral | dc7f8c7c39bb043da2c19a03504c499e0af367fefee810a8190c1119992e2248

Analysis

max time kernel
146s
max time network
144s
platform
windows10-2004_x64
resource
win10v2004-20250217-en
resource tags

arch:x64arch:x86image:win10v2004-20250217-enlocale:en-usos:windows10-2004-x64system
submitted
23-02-2025 10:42

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General

Target

obxod266dev.exe
Size

329KB
MD5

31fc82eeaed45f2389b57ffb9d8f6ea2
SHA1

fd46d4e307b09a372a3bfc0d88b87eeccaf77912
SHA256

dc7f8c7c39bb043da2c19a03504c499e0af367fefee810a8190c1119992e2248
SHA512

418bca3b27a8354e559de8e1333ebc8ff42a5d4f07b42a0ec95775c9a52feb1d61a00006ceefef3be8e30dc07c0fb3123440413a2b16d8d9cc6e468cb9d5c962
SSDEEP

6144:3aDaK7MooumCpZSApAWl2IenY7YDlw+JmS1r8+CMCX:3LK7sk2IKYkp/mYPCX

Score

10^/10

umbral xworm execution persistence rat stealer trojan

Malware Config

Extracted

Family

xworm

25.ip.gl.ply.gg:59054

Attributes

Install_directory
%AppData%
install_file
svchost.exe

Signatures

Detect Umbral payload 2 IoCs

resource	yara_rule
behavioral3/files/0x000b000000023c50-17.dat	family_umbral
behavioral3/memory/2608-25-0x00000279D0F30000-0x00000279D0F70000-memory.dmp	family_umbral

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral3/files/0x000c000000023bfd-6.dat	family_xworm
behavioral3/memory/3888-26-0x0000000000260000-0x000000000027A000-memory.dmp	family_xworm

Umbral
Umbral stealer is an opensource moduler stealer written in C#.
stealer umbral
Umbral family
umbral
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
2128	powershell.exe
764	powershell.exe
2752	powershell.exe
1968	powershell.exe

Checks computer location settings 2 TTPs 2 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-1-5-21-1170604239-850860757-3112005715-1000\Control Panel\International\Geo\Nation	obxod 266dev.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1170604239-850860757-3112005715-1000\Control Panel\International\Geo\Nation	obxod266dev.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.lnk	obxod 266dev.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.lnk	obxod 266dev.exe

Executes dropped EXE 2 IoCs

pid	Process
3888	obxod 266dev.exe
2608	Umbral.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-1-5-21-1170604239-850860757-3112005715-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\svchost = "C:\\Users\\Admin\\AppData\\Roaming\\svchost.exe"	obxod 266dev.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
3	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 9 IoCs

pid	Process
2128	powershell.exe
2128	powershell.exe
764	powershell.exe
764	powershell.exe
2752	powershell.exe
2752	powershell.exe
1968	powershell.exe
1968	powershell.exe
3888	obxod 266dev.exe

Suspicious use of AdjustPrivilegeToken 49 IoCs

description	pid	Process
Token: SeDebugPrivilege	3888	obxod 266dev.exe
Token: SeDebugPrivilege	2608	Umbral.exe
Token: SeIncreaseQuotaPrivilege	4508	wmic.exe
Token: SeSecurityPrivilege	4508	wmic.exe
Token: SeTakeOwnershipPrivilege	4508	wmic.exe
Token: SeLoadDriverPrivilege	4508	wmic.exe
Token: SeSystemProfilePrivilege	4508	wmic.exe
Token: SeSystemtimePrivilege	4508	wmic.exe
Token: SeProfSingleProcessPrivilege	4508	wmic.exe
Token: SeIncBasePriorityPrivilege	4508	wmic.exe
Token: SeCreatePagefilePrivilege	4508	wmic.exe
Token: SeBackupPrivilege	4508	wmic.exe
Token: SeRestorePrivilege	4508	wmic.exe
Token: SeShutdownPrivilege	4508	wmic.exe
Token: SeDebugPrivilege	4508	wmic.exe
Token: SeSystemEnvironmentPrivilege	4508	wmic.exe
Token: SeRemoteShutdownPrivilege	4508	wmic.exe
Token: SeUndockPrivilege	4508	wmic.exe
Token: SeManageVolumePrivilege	4508	wmic.exe
Token: 33	4508	wmic.exe
Token: 34	4508	wmic.exe
Token: 35	4508	wmic.exe
Token: 36	4508	wmic.exe
Token: SeIncreaseQuotaPrivilege	4508	wmic.exe
Token: SeSecurityPrivilege	4508	wmic.exe
Token: SeTakeOwnershipPrivilege	4508	wmic.exe
Token: SeLoadDriverPrivilege	4508	wmic.exe
Token: SeSystemProfilePrivilege	4508	wmic.exe
Token: SeSystemtimePrivilege	4508	wmic.exe
Token: SeProfSingleProcessPrivilege	4508	wmic.exe
Token: SeIncBasePriorityPrivilege	4508	wmic.exe
Token: SeCreatePagefilePrivilege	4508	wmic.exe
Token: SeBackupPrivilege	4508	wmic.exe
Token: SeRestorePrivilege	4508	wmic.exe
Token: SeShutdownPrivilege	4508	wmic.exe
Token: SeDebugPrivilege	4508	wmic.exe
Token: SeSystemEnvironmentPrivilege	4508	wmic.exe
Token: SeRemoteShutdownPrivilege	4508	wmic.exe
Token: SeUndockPrivilege	4508	wmic.exe
Token: SeManageVolumePrivilege	4508	wmic.exe
Token: 33	4508	wmic.exe
Token: 34	4508	wmic.exe
Token: 35	4508	wmic.exe
Token: 36	4508	wmic.exe
Token: SeDebugPrivilege	2128	powershell.exe
Token: SeDebugPrivilege	764	powershell.exe
Token: SeDebugPrivilege	2752	powershell.exe
Token: SeDebugPrivilege	1968	powershell.exe
Token: SeDebugPrivilege	3888	obxod 266dev.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3888	obxod 266dev.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 4176 wrote to memory of 3888	4176	obxod266dev.exe	85
PID 4176 wrote to memory of 3888	4176	obxod266dev.exe	85
PID 4176 wrote to memory of 2608	4176	obxod266dev.exe	86
PID 4176 wrote to memory of 2608	4176	obxod266dev.exe	86
PID 2608 wrote to memory of 4508	2608	Umbral.exe	88
PID 2608 wrote to memory of 4508	2608	Umbral.exe	88
PID 3888 wrote to memory of 2128	3888	obxod 266dev.exe	92
PID 3888 wrote to memory of 2128	3888	obxod 266dev.exe	92
PID 3888 wrote to memory of 764	3888	obxod 266dev.exe	94
PID 3888 wrote to memory of 764	3888	obxod 266dev.exe	94
PID 3888 wrote to memory of 2752	3888	obxod 266dev.exe	96
PID 3888 wrote to memory of 2752	3888	obxod 266dev.exe	96
PID 3888 wrote to memory of 1968	3888	obxod 266dev.exe	98
PID 3888 wrote to memory of 1968	3888	obxod 266dev.exe	98

C:\Users\Admin\AppData\Local\Temp\obxod266dev.exe
"C:\Users\Admin\AppData\Local\Temp\obxod266dev.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4176
- C:\Users\Admin\AppData\Roaming\obxod 266dev.exe
  "C:\Users\Admin\AppData\Roaming\obxod 266dev.exe"
  2⤵
  - Checks computer location settings
  - Drops startup file
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3888
- - 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\obxod 266dev.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2128
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'obxod 266dev.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:764
- - 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\svchost.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2752
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'svchost.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1968
- C:\Users\Admin\AppData\Roaming\Umbral.exe
  "C:\Users\Admin\AppData\Roaming\Umbral.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2608
- - C:\Windows\System32\Wbem\wmic.exe
    "wmic.exe" csproduct get uuid
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:4508

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

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
6d42b6da621e8df5674e26b799c8e2aa

SHA1
ab3ce1327ea1eeedb987ec823d5e0cb146bafa48

SHA256
5ab6a1726f425c6d0158f55eb8d81754ddedd51e651aa0a899a29b7a58619c4c

SHA512
53faffbda8a835bc1143e894c118c15901a5fd09cfc2224dd2f754c06dc794897315049a579b9a8382d4564f071576045aaaf824019b7139d939152dca38ce29

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

Filesize
944B

MD5
72903459f297d1561ed59e88f6266c39

SHA1
22275691405b29149354de4bf3a40bd7cef6f6de

SHA256
34dd19ebba6598d5f586b5c7ac30babf89d055b5f1a6e959129a39311fe4026b

SHA512
6c04ccf522b8b544de9da57b791e7f4a3ff1de200f8a641de106f75270759e04ba028fd6db7e3784bb0233ac3c1f92ec3473d703b9ac585d4851d277d12db10f

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_qdb2njhi.cpr.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

Filesize
232KB

MD5
e486d8aafa368a43a56987dd4d80aa75

SHA1
8851fe89928a47a58b50348d9a4458f24e2725f9

SHA256
596ac7d2aa525ceb7b82aec1e6376d34f36649f028de442fb0a0021e380db136

SHA512
abe413e1277c0ac103778822dcd3f6b03f315fad83731af10284a68fca8ecfa2d2c6b9d9c3e0ec55803a2b31d03ae9c863c430eba23954ccc5f82b2a6d21e573

Download Submit
C:\Users\Admin\AppData\Roaming\obxod 266dev.exe

Filesize
80KB

MD5
3598f860aacfe53b00c305715a6c7b2f

SHA1
70640b2e8a71017cdf5fb8e91fe0b065f89a064b

SHA256
b4b8385381c3bb23d821f179a73ff19083d15f7cc6e1c9cc2235da3c382db241

SHA512
0b2bfa9e701ba126acb6bf9b9b5df26e8558a59708659ec2981173267d277f44e6b6575f1ceb945a86705796ea8f50c5cd1617ee45fdaabdc68af9b2022e654c

Download Submit
memory/2128-31-0x0000025087B60000-0x0000025087B82000-memory.dmp

Filesize
136KB

Download
memory/2608-30-0x00007FF95D630000-0x00007FF95E0F1000-memory.dmp

Filesize
10.8MB

Download
memory/2608-28-0x00007FF95D630000-0x00007FF95E0F1000-memory.dmp

Filesize
10.8MB

Download
memory/2608-25-0x00000279D0F30000-0x00000279D0F70000-memory.dmp

Filesize
256KB

Download
memory/3888-27-0x00007FF95D630000-0x00007FF95E0F1000-memory.dmp

Filesize
10.8MB

Download
memory/3888-26-0x0000000000260000-0x000000000027A000-memory.dmp

Filesize
104KB

Download
memory/3888-81-0x00007FF95D630000-0x00007FF95E0F1000-memory.dmp

Filesize
10.8MB

Download
memory/3888-82-0x00007FF95D630000-0x00007FF95E0F1000-memory.dmp

Filesize
10.8MB

Download
memory/3888-83-0x00007FF95D630000-0x00007FF95E0F1000-memory.dmp

Filesize
10.8MB

Download
memory/4176-0-0x00007FF95D633000-0x00007FF95D635000-memory.dmp

Filesize
8KB

Download
memory/4176-1-0x0000000000460000-0x00000000004B8000-memory.dmp

Filesize
352KB

Download