Overview
overview
10Static
static
10Stealer.zip
windows10-2004-x64
1Mono.Cecil.Mdb.dll
windows10-2004-x64
1Mono.Cecil.Mdb.pdb
windows10-2004-x64
3Mono.Cecil.Pdb.dll
windows10-2004-x64
5Mono.Cecil.Pdb.pdb
windows10-2004-x64
3Mono.Cecil.Rocks.dll
windows10-2004-x64
1Mono.Cecil.Rocks.pdb
windows10-2004-x64
3Mono.Cecil.dll
windows10-2004-x64
5Mono.Cecil.pdb
windows10-2004-x64
3Umbral Builder.exe
windows10-2004-x64
1Umbral Bui...config
windows10-2004-x64
3Umbral Builder.pdb
windows10-2004-x64
3Umbral.exe
windows10-2004-x64
10Vestris.Re...ib.dll
windows10-2004-x64
1jose-jwt.dll
windows10-2004-x64
5Analysis
-
max time kernel
491s -
max time network
495s -
platform
windows10-2004_x64 -
resource
win10v2004-20230621-en -
resource tags
arch:x64arch:x86image:win10v2004-20230621-enlocale:en-usos:windows10-2004-x64system -
submitted
28-06-2023 09:47
Behavioral task
behavioral1
Sample
Stealer.zip
Resource
win10v2004-20230621-en
Behavioral task
behavioral2
Sample
Mono.Cecil.Mdb.dll
Resource
win10v2004-20230621-en
Behavioral task
behavioral3
Sample
Mono.Cecil.Mdb.pdb
Resource
win10v2004-20230621-en
Behavioral task
behavioral4
Sample
Mono.Cecil.Pdb.dll
Resource
win10v2004-20230621-en
Behavioral task
behavioral5
Sample
Mono.Cecil.Pdb.pdb
Resource
win10v2004-20230621-en
Behavioral task
behavioral6
Sample
Mono.Cecil.Rocks.dll
Resource
win10v2004-20230621-en
Behavioral task
behavioral7
Sample
Mono.Cecil.Rocks.pdb
Resource
win10v2004-20230621-en
Behavioral task
behavioral8
Sample
Mono.Cecil.dll
Resource
win10v2004-20230621-en
Behavioral task
behavioral9
Sample
Mono.Cecil.pdb
Resource
win10v2004-20230621-en
Behavioral task
behavioral10
Sample
Umbral Builder.exe
Resource
win10v2004-20230621-en
Behavioral task
behavioral11
Sample
Umbral Builder.exe.config
Resource
win10v2004-20230621-en
Behavioral task
behavioral12
Sample
Umbral Builder.pdb
Resource
win10v2004-20230621-en
Behavioral task
behavioral13
Sample
Umbral.exe
Resource
win10v2004-20230621-en
Behavioral task
behavioral14
Sample
Vestris.ResourceLib.dll
Resource
win10v2004-20230621-en
Behavioral task
behavioral15
Sample
jose-jwt.dll
Resource
win10v2004-20230621-en
General
-
Target
Umbral.exe
-
Size
214KB
-
MD5
3c8afbf0e5a3922c5947ad31114d684c
-
SHA1
ad321d5e7a381b74f92b8417249b80edebd2830d
-
SHA256
ab0377fa096635ef253a94df3982ce2d361413428cba8fe59b4ba3f10101f44a
-
SHA512
76a47a3113a69f8b09b6d4dae649e2025a9b3cb58c5803630d85123ccf97d2c30cd5a9160df2d77e0ec5e6fac81c2ab06eb0c259033c98b53f1bf1b3aa3509ae
-
SSDEEP
3072:iXoAc90eBB8Dp4Dbd95jaP6g81D2LpMYXol9rFl88e9Jls5T33OG3z:QclK25lgH78e9JSp3OG
Malware Config
Signatures
-
Detect Umbral payload 1 IoCs
resource yara_rule behavioral13/memory/4916-133-0x000001E2381A0000-0x000001E2381DC000-memory.dmp family_umbral -
Program crash 1 IoCs
pid pid_target Process procid_target 648 4916 WerFault.exe 81
Processes
-
C:\Users\Admin\AppData\Local\Temp\Umbral.exe"C:\Users\Admin\AppData\Local\Temp\Umbral.exe"1⤵PID:4916
-
C:\Windows\system32\WerFault.exeC:\Windows\system32\WerFault.exe -u -p 4916 -s 8962⤵
- Program crash
PID:648
-
-
C:\Windows\system32\WerFault.exeC:\Windows\system32\WerFault.exe -pss -s 412 -p 4916 -ip 49161⤵PID:2928
Network
-
Remote address:8.8.8.8:53Request95.221.229.192.in-addr.arpaIN PTRResponse
-
Remote address:8.8.8.8:53Request8.3.197.209.in-addr.arpaIN PTRResponse8.3.197.209.in-addr.arpaIN PTRvip0x008map2sslhwcdnnet
-
Remote address:8.8.8.8:53Request134.121.24.20.in-addr.arpaIN PTRResponse
-
Remote address:8.8.8.8:53Request45.8.109.52.in-addr.arpaIN PTRResponse
-
Remote address:8.8.8.8:53Request90.65.42.20.in-addr.arpaIN PTRResponse
-
73 B 144 B 1 1
DNS Request
95.221.229.192.in-addr.arpa
-
70 B 111 B 1 1
DNS Request
8.3.197.209.in-addr.arpa
-
72 B 158 B 1 1
DNS Request
134.121.24.20.in-addr.arpa
-
70 B 144 B 1 1
DNS Request
45.8.109.52.in-addr.arpa
-
70 B 156 B 1 1
DNS Request
90.65.42.20.in-addr.arpa