umbral | 685aea80db0fd039accee42b17bb7110e3c26529f361dac85f2a6d751982ce89

Analysis

max time kernel
92s
max time network
121s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
06/02/2024, 19:54 UTC

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General

Target

ExumNOVA (1).exe
Size

228KB
MD5

f3d936c9efade8ccd0a43ba19ee3ad80
SHA1

5aafc1994763497e589203d08c727cdbf481a474
SHA256

685aea80db0fd039accee42b17bb7110e3c26529f361dac85f2a6d751982ce89
SHA512

b81fa072dc5c0ad1cf08dfcf4d81984d1430f0dbf595d736d0b51249fb302229f116feb908f78e329d0cff5b81b0d517457f4b92c46dcdb0d552a78143c24f55
SSDEEP

6144:uloZMzrIkd8g+EtXHkv/iD4Nhi9fVeGJlMFXSy3g2b8e1mWi:4oZcL+EP8Nhi9fVeGJlMFXSy3/o

Score

10^/10

umbral stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral2/memory/3320-0-0x000001EF681E0000-0x000001EF68220000-memory.dmp	family_umbral

Umbral
Umbral stealer is an opensource moduler stealer written in C#.
stealer umbral

Suspicious use of AdjustPrivilegeToken 43 IoCs

description	pid	Process
Token: SeDebugPrivilege	3320	ExumNOVA (1).exe
Token: SeIncreaseQuotaPrivilege	1980	wmic.exe
Token: SeSecurityPrivilege	1980	wmic.exe
Token: SeTakeOwnershipPrivilege	1980	wmic.exe
Token: SeLoadDriverPrivilege	1980	wmic.exe
Token: SeSystemProfilePrivilege	1980	wmic.exe
Token: SeSystemtimePrivilege	1980	wmic.exe
Token: SeProfSingleProcessPrivilege	1980	wmic.exe
Token: SeIncBasePriorityPrivilege	1980	wmic.exe
Token: SeCreatePagefilePrivilege	1980	wmic.exe
Token: SeBackupPrivilege	1980	wmic.exe
Token: SeRestorePrivilege	1980	wmic.exe
Token: SeShutdownPrivilege	1980	wmic.exe
Token: SeDebugPrivilege	1980	wmic.exe
Token: SeSystemEnvironmentPrivilege	1980	wmic.exe
Token: SeRemoteShutdownPrivilege	1980	wmic.exe
Token: SeUndockPrivilege	1980	wmic.exe
Token: SeManageVolumePrivilege	1980	wmic.exe
Token: 33	1980	wmic.exe
Token: 34	1980	wmic.exe
Token: 35	1980	wmic.exe
Token: 36	1980	wmic.exe
Token: SeIncreaseQuotaPrivilege	1980	wmic.exe
Token: SeSecurityPrivilege	1980	wmic.exe
Token: SeTakeOwnershipPrivilege	1980	wmic.exe
Token: SeLoadDriverPrivilege	1980	wmic.exe
Token: SeSystemProfilePrivilege	1980	wmic.exe
Token: SeSystemtimePrivilege	1980	wmic.exe
Token: SeProfSingleProcessPrivilege	1980	wmic.exe
Token: SeIncBasePriorityPrivilege	1980	wmic.exe
Token: SeCreatePagefilePrivilege	1980	wmic.exe
Token: SeBackupPrivilege	1980	wmic.exe
Token: SeRestorePrivilege	1980	wmic.exe
Token: SeShutdownPrivilege	1980	wmic.exe
Token: SeDebugPrivilege	1980	wmic.exe
Token: SeSystemEnvironmentPrivilege	1980	wmic.exe
Token: SeRemoteShutdownPrivilege	1980	wmic.exe
Token: SeUndockPrivilege	1980	wmic.exe
Token: SeManageVolumePrivilege	1980	wmic.exe
Token: 33	1980	wmic.exe
Token: 34	1980	wmic.exe
Token: 35	1980	wmic.exe
Token: 36	1980	wmic.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 3320 wrote to memory of 1980	3320	ExumNOVA (1).exe	86
PID 3320 wrote to memory of 1980	3320	ExumNOVA (1).exe	86

C:\Users\Admin\AppData\Local\Temp\ExumNOVA (1).exe
"C:\Users\Admin\AppData\Local\Temp\ExumNOVA (1).exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3320
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1980

Network

DNS

gstatic.com

ExumNOVA (1).exe

Remote address:

8.8.8.8:53

Request

gstatic.com

IN A

Response

gstatic.com

IN A

142.250.200.35
GET

https://gstatic.com/generate_204

ExumNOVA (1).exe

Remote address:

142.250.200.35:443

Request

GET /generate_204 HTTP/1.1
Host: gstatic.com
Connection: Keep-Alive

Response

HTTP/1.1 204 No Content

Content-Length: 0
Cross-Origin-Resource-Policy: cross-origin
Date: Tue, 06 Feb 2024 19:54:21 GMT
Alt-Svc: h3=":443"; ma=2592000,h3-29=":443"; ma=2592000
DNS

183.142.211.20.in-addr.arpa

Remote address:

8.8.8.8:53

Request

183.142.211.20.in-addr.arpa

IN PTR

Response
DNS

0.159.190.20.in-addr.arpa

Remote address:

8.8.8.8:53

Request

0.159.190.20.in-addr.arpa

IN PTR

Response
DNS

95.221.229.192.in-addr.arpa

Remote address:

8.8.8.8:53

Request

95.221.229.192.in-addr.arpa

IN PTR

Response
DNS

228.249.119.40.in-addr.arpa

Remote address:

8.8.8.8:53

Request

228.249.119.40.in-addr.arpa

IN PTR

Response
DNS

150.1.37.23.in-addr.arpa

Remote address:

8.8.8.8:53

Request

150.1.37.23.in-addr.arpa

IN PTR

Response

150.1.37.23.in-addr.arpa

IN PTR

a23-37-1-150deploystaticakamaitechnologiescom
DNS

103.169.127.40.in-addr.arpa

Remote address:

8.8.8.8:53

Request

103.169.127.40.in-addr.arpa

IN PTR

Response
DNS

198.187.3.20.in-addr.arpa

Remote address:

8.8.8.8:53

Request

198.187.3.20.in-addr.arpa

IN PTR

Response
DNS

140.71.91.104.in-addr.arpa

Remote address:

8.8.8.8:53

Request

140.71.91.104.in-addr.arpa

IN PTR

Response

140.71.91.104.in-addr.arpa

IN PTR

a104-91-71-140deploystaticakamaitechnologiescom
DNS

21.236.111.52.in-addr.arpa

Remote address:

8.8.8.8:53

Request

21.236.111.52.in-addr.arpa

IN PTR

Response
DNS

189.178.17.96.in-addr.arpa

Remote address:

8.8.8.8:53

Request

189.178.17.96.in-addr.arpa

IN PTR

Response

189.178.17.96.in-addr.arpa

IN PTR

a96-17-178-189deploystaticakamaitechnologiescom

142.250.200.35:443

https://gstatic.com/generate_204

tls, http

ExumNOVA (1).exe

770 B
5.1kB
9
9

HTTP Request

GET https://gstatic.com/generate_204

HTTP Response

204

8.8.8.8:53

gstatic.com

dns

ExumNOVA (1).exe

57 B
73 B
1
1

DNS Request

gstatic.com

DNS Response

142.250.200.35
8.8.8.8:53

183.142.211.20.in-addr.arpa

dns

73 B
159 B
1
1

DNS Request

183.142.211.20.in-addr.arpa
8.8.8.8:53

0.159.190.20.in-addr.arpa

dns

71 B
157 B
1
1

DNS Request

0.159.190.20.in-addr.arpa
8.8.8.8:53

95.221.229.192.in-addr.arpa

dns

73 B
144 B
1
1

DNS Request

95.221.229.192.in-addr.arpa
8.8.8.8:53

228.249.119.40.in-addr.arpa

dns

73 B
159 B
1
1

DNS Request

228.249.119.40.in-addr.arpa
8.8.8.8:53

150.1.37.23.in-addr.arpa

dns

70 B
133 B
1
1

DNS Request

150.1.37.23.in-addr.arpa
8.8.8.8:53

103.169.127.40.in-addr.arpa

dns

73 B
147 B
1
1

DNS Request

103.169.127.40.in-addr.arpa
8.8.8.8:53

198.187.3.20.in-addr.arpa

dns

71 B
157 B
1
1

DNS Request

198.187.3.20.in-addr.arpa
8.8.8.8:53

140.71.91.104.in-addr.arpa

dns

72 B
137 B
1
1

DNS Request

140.71.91.104.in-addr.arpa
8.8.8.8:53

21.236.111.52.in-addr.arpa

dns

72 B
158 B
1
1

DNS Request

21.236.111.52.in-addr.arpa
8.8.8.8:53

189.178.17.96.in-addr.arpa

dns

72 B
137 B
1
1

DNS Request

189.178.17.96.in-addr.arpa

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

memory/3320-0-0x000001EF681E0000-0x000001EF68220000-memory.dmp

Filesize
256KB

Download
memory/3320-1-0x00007FF8353C0000-0x00007FF835E81000-memory.dmp

Filesize
10.8MB

Download
memory/3320-2-0x000001EF6A920000-0x000001EF6A930000-memory.dmp

Filesize
64KB

Download
memory/3320-4-0x00007FF8353C0000-0x00007FF835E81000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

HTTP Request

HTTP Response

DNS Request

DNS Response

DNS Request

DNS Request

DNS Request

DNS Request

DNS Request

DNS Request

DNS Request

DNS Request

DNS Request

DNS Request

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

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