umbral | 0f8980228acd3d9dd7bc9208c13a68b244ee903212327e4d350a82010aa37993

Resubmissions

07-12-2023 23:09

231207-25d1hagb25 10

Analysis

max time kernel
82s
max time network
99s
platform
windows10-2004_x64
resource
win10v2004-20231127-es
resource tags

arch:x64arch:x86image:win10v2004-20231127-eslocale:es-esos:windows10-2004-x64systemwindows
submitted
07-12-2023 23:09

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General

Target

HWID.exe
Size

149KB
MD5

2c1ec91ada25a4a34441200dd9773c2a
SHA1

80154f3f48a32866de9742bed33ebb907086125e
SHA256

0f8980228acd3d9dd7bc9208c13a68b244ee903212327e4d350a82010aa37993
SHA512

0ff2d7b2ac069c8bb2b381333f896b2d09ee0c0ec23b1943c35ae758adc71bd34c69502fb22208b1bdb568bda8a908ed548f407010d09532664b02d83fde5b99
SSDEEP

3072:+r8dXu13UyQlK/UbZcZJuQCdM79xQbj8alpC5cgiTWMolM2i:+r8de1krcsbQuQpUQallgiboF

Score

10^/10

umbral xworm rat stealer trojan

Malware Config

Extracted

Family

xworm

owner-cc.gl.at.ply.gg:32281

Attributes

Install_directory
%AppData%
install_file
WindowsSoundSystem.exe

Extracted

Family

umbral

https://discord.com/api/webhooks/1181010758201520208/iCxvWqp_69ofS-eHs5naW1_4vBzPxLSr9zIR5Bso1e4orm8yDICPrre5CTF60DCywY_3

Signatures

Detect Umbral payload 6 IoCs

resource	yara_rule
behavioral1/files/0x000800000002320e-18.dat	family_umbral
behavioral1/files/0x000800000002320e-26.dat	family_umbral
behavioral1/memory/4704-28-0x00000290A97D0000-0x00000290A9810000-memory.dmp	family_umbral
behavioral1/files/0x000800000002320e-25.dat	family_umbral
behavioral1/files/0x000800000002320e-59.dat	family_umbral
behavioral1/files/0x000800000002320e-58.dat	family_umbral

Detect Xworm Payload 5 IoCs

resource	yara_rule
behavioral1/files/0x000900000002320c-7.dat	family_xworm
behavioral1/files/0x000900000002320c-12.dat	family_xworm
behavioral1/files/0x000900000002320c-13.dat	family_xworm
behavioral1/memory/3352-22-0x0000000000660000-0x000000000067A000-memory.dmp	family_xworm
behavioral1/files/0x000900000002320c-48.dat	family_xworm

Umbral
Umbral stealer is an opensource moduler stealer written in C#.
stealer umbral
Xworm
Xworm is a remote access trojan written in C#.
trojan rat xworm

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-1-5-21-1067295379-1486014338-1703171060-1000\Control Panel\International\Geo\Nation	HWID.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1067295379-1486014338-1703171060-1000\Control Panel\International\Geo\Nation	HWID.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 4 IoCs

pid	Process
3352	Windows sound.exe
4704	Windows Blue Tooth.exe
1064	Windows sound.exe
4856	Windows Blue Tooth.exe

Looks up external IP address via web service 2 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
82	ip-api.com
24	ip-api.com

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

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	5100	HWID.exe
Token: SeDebugPrivilege	3352	Windows sound.exe
Token: SeDebugPrivilege	4704	Windows Blue Tooth.exe
Token: SeIncreaseQuotaPrivilege	2172	wmic.exe
Token: SeSecurityPrivilege	2172	wmic.exe
Token: SeTakeOwnershipPrivilege	2172	wmic.exe
Token: SeLoadDriverPrivilege	2172	wmic.exe
Token: SeSystemProfilePrivilege	2172	wmic.exe
Token: SeSystemtimePrivilege	2172	wmic.exe
Token: SeProfSingleProcessPrivilege	2172	wmic.exe
Token: SeIncBasePriorityPrivilege	2172	wmic.exe
Token: SeCreatePagefilePrivilege	2172	wmic.exe
Token: SeBackupPrivilege	2172	wmic.exe
Token: SeRestorePrivilege	2172	wmic.exe
Token: SeShutdownPrivilege	2172	wmic.exe
Token: SeDebugPrivilege	2172	wmic.exe
Token: SeSystemEnvironmentPrivilege	2172	wmic.exe
Token: SeRemoteShutdownPrivilege	2172	wmic.exe
Token: SeUndockPrivilege	2172	wmic.exe
Token: SeManageVolumePrivilege	2172	wmic.exe
Token: 33	2172	wmic.exe
Token: 34	2172	wmic.exe
Token: 35	2172	wmic.exe
Token: 36	2172	wmic.exe
Token: SeIncreaseQuotaPrivilege	2172	wmic.exe
Token: SeSecurityPrivilege	2172	wmic.exe
Token: SeTakeOwnershipPrivilege	2172	wmic.exe
Token: SeLoadDriverPrivilege	2172	wmic.exe
Token: SeSystemProfilePrivilege	2172	wmic.exe
Token: SeSystemtimePrivilege	2172	wmic.exe
Token: SeProfSingleProcessPrivilege	2172	wmic.exe
Token: SeIncBasePriorityPrivilege	2172	wmic.exe
Token: SeCreatePagefilePrivilege	2172	wmic.exe
Token: SeBackupPrivilege	2172	wmic.exe
Token: SeRestorePrivilege	2172	wmic.exe
Token: SeShutdownPrivilege	2172	wmic.exe
Token: SeDebugPrivilege	2172	wmic.exe
Token: SeSystemEnvironmentPrivilege	2172	wmic.exe
Token: SeRemoteShutdownPrivilege	2172	wmic.exe
Token: SeUndockPrivilege	2172	wmic.exe
Token: SeManageVolumePrivilege	2172	wmic.exe
Token: 33	2172	wmic.exe
Token: 34	2172	wmic.exe
Token: 35	2172	wmic.exe
Token: 36	2172	wmic.exe
Token: SeDebugPrivilege	3352	Windows sound.exe
Token: SeDebugPrivilege	3840	HWID.exe
Token: SeDebugPrivilege	1064	Windows sound.exe
Token: SeDebugPrivilege	4856	Windows Blue Tooth.exe
Token: SeIncreaseQuotaPrivilege	3128	wmic.exe
Token: SeSecurityPrivilege	3128	wmic.exe
Token: SeTakeOwnershipPrivilege	3128	wmic.exe
Token: SeLoadDriverPrivilege	3128	wmic.exe
Token: SeSystemProfilePrivilege	3128	wmic.exe
Token: SeSystemtimePrivilege	3128	wmic.exe
Token: SeProfSingleProcessPrivilege	3128	wmic.exe
Token: SeIncBasePriorityPrivilege	3128	wmic.exe
Token: SeCreatePagefilePrivilege	3128	wmic.exe
Token: SeBackupPrivilege	3128	wmic.exe
Token: SeRestorePrivilege	3128	wmic.exe
Token: SeShutdownPrivilege	3128	wmic.exe
Token: SeDebugPrivilege	3128	wmic.exe
Token: SeSystemEnvironmentPrivilege	3128	wmic.exe
Token: SeRemoteShutdownPrivilege	3128	wmic.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 5100 wrote to memory of 3352	5100	HWID.exe	91
PID 5100 wrote to memory of 3352	5100	HWID.exe	91
PID 5100 wrote to memory of 4704	5100	HWID.exe	92
PID 5100 wrote to memory of 4704	5100	HWID.exe	92
PID 4704 wrote to memory of 2172	4704	Windows Blue Tooth.exe	95
PID 4704 wrote to memory of 2172	4704	Windows Blue Tooth.exe	95
PID 3840 wrote to memory of 1064	3840	HWID.exe	122
PID 3840 wrote to memory of 1064	3840	HWID.exe	122
PID 3840 wrote to memory of 4856	3840	HWID.exe	123
PID 3840 wrote to memory of 4856	3840	HWID.exe	123
PID 4856 wrote to memory of 3128	4856	Windows Blue Tooth.exe	124
PID 4856 wrote to memory of 3128	4856	Windows Blue Tooth.exe	124

C:\Users\Admin\AppData\Local\Temp\HWID.exe
"C:\Users\Admin\AppData\Local\Temp\HWID.exe"
1⤵
- Checks computer location settings
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:5100
- C:\Users\Admin\AppData\Local\Temp\Windows sound.exe
  "C:\Users\Admin\AppData\Local\Temp\Windows sound.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:3352
- C:\Users\Admin\AppData\Local\Temp\Windows Blue Tooth.exe
  "C:\Users\Admin\AppData\Local\Temp\Windows Blue Tooth.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4704
- - C:\Windows\System32\Wbem\wmic.exe
    "wmic.exe" csproduct get uuid
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:2172

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
1⤵
PID:4292

C:\Users\Admin\AppData\Local\Temp\HWID.exe
"C:\Users\Admin\AppData\Local\Temp\HWID.exe"
1⤵
- Checks computer location settings
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3840
- C:\Users\Admin\AppData\Local\Temp\Windows sound.exe
  "C:\Users\Admin\AppData\Local\Temp\Windows sound.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:1064
- C:\Users\Admin\AppData\Local\Temp\Windows Blue Tooth.exe
  "C:\Users\Admin\AppData\Local\Temp\Windows Blue Tooth.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4856
- - C:\Windows\System32\Wbem\wmic.exe
    "wmic.exe" csproduct get uuid
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:3128

C:\Users\Admin\AppData\Local\Temp\HWID.exe
"C:\Users\Admin\AppData\Local\Temp\HWID.exe"
1⤵
PID:3868

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\HWID.exe.log

Filesize
1KB

MD5
bb6a89a9355baba2918bb7c32eca1c94

SHA1
976c76dfbc072e405ce0d0b9314fe5b9e84cb1b2

SHA256
192fbb7f4d1396fd4846854c5472a60aa80932f3c754f2c2f1a2a136c8a6bb4b

SHA512
efdf0c6228c3a8a7550804ac921dfefc5265eb2c9bbf4b8b00cedd427c0a5adf610586b844ff444bd717abff138affcbe49632ce984cbffc5fa8019b4ba6ec0f

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\Windows Blue Tooth.exe.log

Filesize
1KB

MD5
8094b248fe3231e48995c2be32aeb08c

SHA1
2fe06e000ebec919bf982d033c5d1219c1f916b6

SHA256
136c30d964f4abbb5279bdc86d0e00578333782f15f05f0d2d050730dcb7a9bc

SHA512
bf27a3822008796370e2c506c910a40992b9240606ea1bc19f683b2fee86b81897660ac0cf8e746ca093dae9e408949e2e9002ded75678a69f020d3b0452801f

Download Submit
C:\Users\Admin\AppData\Local\Temp\Windows Blue Tooth.exe

Filesize
229KB

MD5
33405e3ec22e3bd98c3339fa179438b6

SHA1
77134fb582641f0a54007b6ea92c5ad62ef3ed62

SHA256
f336096f486e9507e51d6cf172745ab126cd57f98e3b9429e77f488c65a59019

SHA512
fa8649a280a4b8099f6c46a71226e8e03388c794c3cdded278128322d612a48a85dfbe7467da2c8079ff4fefde9491e4e867c6e4786bf690f76acbc948880f56

Download Submit
C:\Users\Admin\AppData\Local\Temp\Windows Blue Tooth.exe

Filesize
229KB

MD5
33405e3ec22e3bd98c3339fa179438b6

SHA1
77134fb582641f0a54007b6ea92c5ad62ef3ed62

SHA256
f336096f486e9507e51d6cf172745ab126cd57f98e3b9429e77f488c65a59019

SHA512
fa8649a280a4b8099f6c46a71226e8e03388c794c3cdded278128322d612a48a85dfbe7467da2c8079ff4fefde9491e4e867c6e4786bf690f76acbc948880f56

Download Submit
C:\Users\Admin\AppData\Local\Temp\Windows Blue Tooth.exe

Filesize
229KB

MD5
33405e3ec22e3bd98c3339fa179438b6

SHA1
77134fb582641f0a54007b6ea92c5ad62ef3ed62

SHA256
f336096f486e9507e51d6cf172745ab126cd57f98e3b9429e77f488c65a59019

SHA512
fa8649a280a4b8099f6c46a71226e8e03388c794c3cdded278128322d612a48a85dfbe7467da2c8079ff4fefde9491e4e867c6e4786bf690f76acbc948880f56

Download Submit
C:\Users\Admin\AppData\Local\Temp\Windows Blue Tooth.exe

Filesize
229KB

MD5
33405e3ec22e3bd98c3339fa179438b6

SHA1
77134fb582641f0a54007b6ea92c5ad62ef3ed62

SHA256
f336096f486e9507e51d6cf172745ab126cd57f98e3b9429e77f488c65a59019

SHA512
fa8649a280a4b8099f6c46a71226e8e03388c794c3cdded278128322d612a48a85dfbe7467da2c8079ff4fefde9491e4e867c6e4786bf690f76acbc948880f56

Download Submit
C:\Users\Admin\AppData\Local\Temp\Windows Blue Tooth.exe

Filesize
229KB

MD5
33405e3ec22e3bd98c3339fa179438b6

SHA1
77134fb582641f0a54007b6ea92c5ad62ef3ed62

SHA256
f336096f486e9507e51d6cf172745ab126cd57f98e3b9429e77f488c65a59019

SHA512
fa8649a280a4b8099f6c46a71226e8e03388c794c3cdded278128322d612a48a85dfbe7467da2c8079ff4fefde9491e4e867c6e4786bf690f76acbc948880f56

Download Submit
C:\Users\Admin\AppData\Local\Temp\Windows sound.exe

Filesize
75KB

MD5
cf4187443a0b1f17e74f66723631a822

SHA1
2e17093723097c3729d29d19da3df6d7e18e37be

SHA256
5eed1e22f8d10b33233ff690d9fc10df6e419c7c7d6223230bbd0d8efaa51887

SHA512
2f4865810ad1f291018babd5ec627360d460e29647f6383d0afc6c2f219fd78ddb5113cfa3f27d125d0a59216588805f86b7fa78f3b5f4d45d15192f72d134a7

Download Submit
C:\Users\Admin\AppData\Local\Temp\Windows sound.exe

Filesize
75KB

MD5
cf4187443a0b1f17e74f66723631a822

SHA1
2e17093723097c3729d29d19da3df6d7e18e37be

SHA256
5eed1e22f8d10b33233ff690d9fc10df6e419c7c7d6223230bbd0d8efaa51887

SHA512
2f4865810ad1f291018babd5ec627360d460e29647f6383d0afc6c2f219fd78ddb5113cfa3f27d125d0a59216588805f86b7fa78f3b5f4d45d15192f72d134a7

Download Submit
C:\Users\Admin\AppData\Local\Temp\Windows sound.exe

Filesize
75KB

MD5
cf4187443a0b1f17e74f66723631a822

SHA1
2e17093723097c3729d29d19da3df6d7e18e37be

SHA256
5eed1e22f8d10b33233ff690d9fc10df6e419c7c7d6223230bbd0d8efaa51887

SHA512
2f4865810ad1f291018babd5ec627360d460e29647f6383d0afc6c2f219fd78ddb5113cfa3f27d125d0a59216588805f86b7fa78f3b5f4d45d15192f72d134a7

Download Submit
C:\Users\Admin\AppData\Local\Temp\Windows sound.exe

Filesize
75KB

MD5
cf4187443a0b1f17e74f66723631a822

SHA1
2e17093723097c3729d29d19da3df6d7e18e37be

SHA256
5eed1e22f8d10b33233ff690d9fc10df6e419c7c7d6223230bbd0d8efaa51887

SHA512
2f4865810ad1f291018babd5ec627360d460e29647f6383d0afc6c2f219fd78ddb5113cfa3f27d125d0a59216588805f86b7fa78f3b5f4d45d15192f72d134a7

Download Submit
memory/1064-67-0x00007FFF783F0000-0x00007FFF78EB1000-memory.dmp

Filesize
10.8MB

Download
memory/1064-61-0x00007FFF783F0000-0x00007FFF78EB1000-memory.dmp

Filesize
10.8MB

Download
memory/3352-27-0x00007FFF783F0000-0x00007FFF78EB1000-memory.dmp

Filesize
10.8MB

Download
memory/3352-36-0x0000000002760000-0x0000000002770000-memory.dmp

Filesize
64KB

Download
memory/3352-41-0x00007FFF783F0000-0x00007FFF78EB1000-memory.dmp

Filesize
10.8MB

Download
memory/3352-42-0x0000000002760000-0x0000000002770000-memory.dmp

Filesize
64KB

Download
memory/3352-22-0x0000000000660000-0x000000000067A000-memory.dmp

Filesize
104KB

Download
memory/3840-45-0x00007FFF783F0000-0x00007FFF78EB1000-memory.dmp

Filesize
10.8MB

Download
memory/3840-62-0x00007FFF783F0000-0x00007FFF78EB1000-memory.dmp

Filesize
10.8MB

Download
memory/3868-57-0x00007FFF783F0000-0x00007FFF78EB1000-memory.dmp

Filesize
10.8MB

Download
memory/3868-46-0x00007FFF783F0000-0x00007FFF78EB1000-memory.dmp

Filesize
10.8MB

Download
memory/4704-33-0x00000290C4070000-0x00000290C4172000-memory.dmp

Filesize
1.0MB

Download
memory/4704-35-0x00007FFF783F0000-0x00007FFF78EB1000-memory.dmp

Filesize
10.8MB

Download
memory/4704-28-0x00000290A97D0000-0x00000290A9810000-memory.dmp

Filesize
256KB

Download
memory/4704-32-0x00000290C3EC0000-0x00000290C3F00000-memory.dmp

Filesize
256KB

Download
memory/4704-31-0x00000290C3F50000-0x00000290C3F60000-memory.dmp

Filesize
64KB

Download
memory/4704-30-0x00007FFF783F0000-0x00007FFF78EB1000-memory.dmp

Filesize
10.8MB

Download
memory/4856-63-0x00007FFF783F0000-0x00007FFF78EB1000-memory.dmp

Filesize
10.8MB

Download
memory/4856-64-0x000001B1B7230000-0x000001B1B7240000-memory.dmp

Filesize
64KB

Download
memory/4856-65-0x00007FFF783F0000-0x00007FFF78EB1000-memory.dmp

Filesize
10.8MB

Download
memory/5100-0-0x00000000000B0000-0x00000000000DC000-memory.dmp

Filesize
176KB

Download
memory/5100-2-0x000000001B110000-0x000000001B120000-memory.dmp

Filesize
64KB

Download
memory/5100-1-0x00007FFF783F0000-0x00007FFF78EB1000-memory.dmp

Filesize
10.8MB

Download
memory/5100-29-0x00007FFF783F0000-0x00007FFF78EB1000-memory.dmp

Filesize
10.8MB

Download

Resubmissions

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads