umbral | 5658f42d6332d99827d772a710d74e905f822d23e958c86f802973c2cffe850f

Resubmissions

27-04-2024 22:30

240427-2e6b3aac8y 10

27-04-2024 22:14

240427-15m3qsaa31 10

Analysis

max time kernel
234s
max time network
302s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
27-04-2024 22:30

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

l0xmdpqk.ylw.bin.exe
Size

227KB
MD5

7f32dcbb00de079c31ff7895ae9c0560
SHA1

e80841a355b8dce9955b9bbba63f02a4ad31a836
SHA256

5658f42d6332d99827d772a710d74e905f822d23e958c86f802973c2cffe850f
SHA512

776cabc7d2442d90655eec0f434c811146b7f569dbace3c8609a582c167af5990ec25d1d7a8eb111744cecbdcd43d37af7d623eb97eb414ad926371083f7aadc
SSDEEP

6144:bloZM+9EB1/SqctonEPfCqAu0+prdmK13Up7a6rhgj8e1m5l:5oZQdSqcwvu0+prdmK13Up7a6rhQM

Score

10^/10

umbral stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

Processes:

resource	yara_rule
behavioral3/memory/4540-0-0x0000021B949F0000-0x0000021B94A30000-memory.dmp	family_umbral

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

Suspicious use of AdjustPrivilegeToken 43 IoCs

Processes:

l0xmdpqk.ylw.bin.exewmic.exe

description	pid	process
Token: SeDebugPrivilege	4540	l0xmdpqk.ylw.bin.exe
Token: SeIncreaseQuotaPrivilege	3764	wmic.exe
Token: SeSecurityPrivilege	3764	wmic.exe
Token: SeTakeOwnershipPrivilege	3764	wmic.exe
Token: SeLoadDriverPrivilege	3764	wmic.exe
Token: SeSystemProfilePrivilege	3764	wmic.exe
Token: SeSystemtimePrivilege	3764	wmic.exe
Token: SeProfSingleProcessPrivilege	3764	wmic.exe
Token: SeIncBasePriorityPrivilege	3764	wmic.exe
Token: SeCreatePagefilePrivilege	3764	wmic.exe
Token: SeBackupPrivilege	3764	wmic.exe
Token: SeRestorePrivilege	3764	wmic.exe
Token: SeShutdownPrivilege	3764	wmic.exe
Token: SeDebugPrivilege	3764	wmic.exe
Token: SeSystemEnvironmentPrivilege	3764	wmic.exe
Token: SeRemoteShutdownPrivilege	3764	wmic.exe
Token: SeUndockPrivilege	3764	wmic.exe
Token: SeManageVolumePrivilege	3764	wmic.exe
Token: 33	3764	wmic.exe
Token: 34	3764	wmic.exe
Token: 35	3764	wmic.exe
Token: 36	3764	wmic.exe
Token: SeIncreaseQuotaPrivilege	3764	wmic.exe
Token: SeSecurityPrivilege	3764	wmic.exe
Token: SeTakeOwnershipPrivilege	3764	wmic.exe
Token: SeLoadDriverPrivilege	3764	wmic.exe
Token: SeSystemProfilePrivilege	3764	wmic.exe
Token: SeSystemtimePrivilege	3764	wmic.exe
Token: SeProfSingleProcessPrivilege	3764	wmic.exe
Token: SeIncBasePriorityPrivilege	3764	wmic.exe
Token: SeCreatePagefilePrivilege	3764	wmic.exe
Token: SeBackupPrivilege	3764	wmic.exe
Token: SeRestorePrivilege	3764	wmic.exe
Token: SeShutdownPrivilege	3764	wmic.exe
Token: SeDebugPrivilege	3764	wmic.exe
Token: SeSystemEnvironmentPrivilege	3764	wmic.exe
Token: SeRemoteShutdownPrivilege	3764	wmic.exe
Token: SeUndockPrivilege	3764	wmic.exe
Token: SeManageVolumePrivilege	3764	wmic.exe
Token: 33	3764	wmic.exe
Token: 34	3764	wmic.exe
Token: 35	3764	wmic.exe
Token: 36	3764	wmic.exe

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

l0xmdpqk.ylw.bin.exe

description	pid	process	target process
PID 4540 wrote to memory of 3764	4540	l0xmdpqk.ylw.bin.exe	wmic.exe
PID 4540 wrote to memory of 3764	4540	l0xmdpqk.ylw.bin.exe	wmic.exe

C:\Users\Admin\AppData\Local\Temp\l0xmdpqk.ylw.bin.exe
"C:\Users\Admin\AppData\Local\Temp\l0xmdpqk.ylw.bin.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4540

C:\Windows\System32\Wbem\wmic.exe
"wmic.exe" csproduct get uuid
2⤵
- Suspicious use of AdjustPrivilegeToken
PID:3764

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4072 --field-trial-handle=1928,i,13242902252791919845,10377620236057253993,262144 --variations-seed-version /prefetch:8
1⤵
PID:1660

Network

MITRE ATT&CK Matrix

Replay Monitor

Loading Replay Monitor...

Downloads

memory/4540-0-0x0000021B949F0000-0x0000021B94A30000-memory.dmp

Filesize
256KB

Download
memory/4540-1-0x00007FF9EA910000-0x00007FF9EB3D1000-memory.dmp

Filesize
10.8MB

Download
memory/4540-2-0x0000021BAEEE0000-0x0000021BAEEF0000-memory.dmp

Filesize
64KB

Download
memory/4540-4-0x00007FF9EA910000-0x00007FF9EB3D1000-memory.dmp

Filesize
10.8MB

Download