umbral | 1ab54a5786eeedb01e74215a50a796fefbd12c47c0b864b1be5f6d45a2951bf4

Analysis

max time kernel
16s
max time network
17s
platform
windows10-1703_x64
resource
win10-20240404-en
resource tags

arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-x64system
submitted
08-08-2024 16:35

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General

Target

uhm, uhh.exe
Size

229KB
MD5

0d407796194f47dd4739950f347631dc
SHA1

2e843294cd4ccbdcb53b0ca4cdcb0d6640d75615
SHA256

1ab54a5786eeedb01e74215a50a796fefbd12c47c0b864b1be5f6d45a2951bf4
SHA512

b70550be02cc4b622fa35c0189884104a2b6719e8b593e156b74874cffc835a906df3b746b2247c2bffffbb47be6470ba3ac16cb2c8e163785f64650c43a4b97
SSDEEP

6144:tloZMNrIkd8g+EtXHkv/iD41KaC9rI8j867NokRQg4db8e1mAG+Iwi:voZmL+EP81KaC9rI8j867NokRQgkC+Ip

Score

10^/10

umbral credential_access execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral2/memory/4904-0-0x0000023E76370000-0x0000023E763B0000-memory.dmp	family_umbral

Umbral
Umbral stealer is an opensource moduler stealer written in C#.
stealer umbral
Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
credential_access stealer

Credentials from Web Browsers
T1555.003

Command and Scripting Interpreter: PowerShell 1 TTPs 4 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
3616	powershell.exe
4236	powershell.exe
4448	powershell.exe
2592	powershell.exe

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
T1552.001

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
7	discord.com
8	discord.com

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
4	ip-api.com

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
3480	wmic.exe

Suspicious behavior: EnumeratesProcesses 15 IoCs

pid	Process
3616	powershell.exe
3616	powershell.exe
3616	powershell.exe
4236	powershell.exe
4236	powershell.exe
4236	powershell.exe
4448	powershell.exe
4448	powershell.exe
4448	powershell.exe
3920	powershell.exe
3920	powershell.exe
3920	powershell.exe
2592	powershell.exe
2592	powershell.exe
2592	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	4904	uhm, uhh.exe
Token: SeDebugPrivilege	3616	powershell.exe
Token: SeIncreaseQuotaPrivilege	3616	powershell.exe
Token: SeSecurityPrivilege	3616	powershell.exe
Token: SeTakeOwnershipPrivilege	3616	powershell.exe
Token: SeLoadDriverPrivilege	3616	powershell.exe
Token: SeSystemProfilePrivilege	3616	powershell.exe
Token: SeSystemtimePrivilege	3616	powershell.exe
Token: SeProfSingleProcessPrivilege	3616	powershell.exe
Token: SeIncBasePriorityPrivilege	3616	powershell.exe
Token: SeCreatePagefilePrivilege	3616	powershell.exe
Token: SeBackupPrivilege	3616	powershell.exe
Token: SeRestorePrivilege	3616	powershell.exe
Token: SeShutdownPrivilege	3616	powershell.exe
Token: SeDebugPrivilege	3616	powershell.exe
Token: SeSystemEnvironmentPrivilege	3616	powershell.exe
Token: SeRemoteShutdownPrivilege	3616	powershell.exe
Token: SeUndockPrivilege	3616	powershell.exe
Token: SeManageVolumePrivilege	3616	powershell.exe
Token: 33	3616	powershell.exe
Token: 34	3616	powershell.exe
Token: 35	3616	powershell.exe
Token: 36	3616	powershell.exe
Token: SeDebugPrivilege	4236	powershell.exe
Token: SeDebugPrivilege	4448	powershell.exe
Token: SeDebugPrivilege	3920	powershell.exe
Token: SeIncreaseQuotaPrivilege	3704	wmic.exe
Token: SeSecurityPrivilege	3704	wmic.exe
Token: SeTakeOwnershipPrivilege	3704	wmic.exe
Token: SeLoadDriverPrivilege	3704	wmic.exe
Token: SeSystemProfilePrivilege	3704	wmic.exe
Token: SeSystemtimePrivilege	3704	wmic.exe
Token: SeProfSingleProcessPrivilege	3704	wmic.exe
Token: SeIncBasePriorityPrivilege	3704	wmic.exe
Token: SeCreatePagefilePrivilege	3704	wmic.exe
Token: SeBackupPrivilege	3704	wmic.exe
Token: SeRestorePrivilege	3704	wmic.exe
Token: SeShutdownPrivilege	3704	wmic.exe
Token: SeDebugPrivilege	3704	wmic.exe
Token: SeSystemEnvironmentPrivilege	3704	wmic.exe
Token: SeRemoteShutdownPrivilege	3704	wmic.exe
Token: SeUndockPrivilege	3704	wmic.exe
Token: SeManageVolumePrivilege	3704	wmic.exe
Token: 33	3704	wmic.exe
Token: 34	3704	wmic.exe
Token: 35	3704	wmic.exe
Token: 36	3704	wmic.exe
Token: SeIncreaseQuotaPrivilege	3704	wmic.exe
Token: SeSecurityPrivilege	3704	wmic.exe
Token: SeTakeOwnershipPrivilege	3704	wmic.exe
Token: SeLoadDriverPrivilege	3704	wmic.exe
Token: SeSystemProfilePrivilege	3704	wmic.exe
Token: SeSystemtimePrivilege	3704	wmic.exe
Token: SeProfSingleProcessPrivilege	3704	wmic.exe
Token: SeIncBasePriorityPrivilege	3704	wmic.exe
Token: SeCreatePagefilePrivilege	3704	wmic.exe
Token: SeBackupPrivilege	3704	wmic.exe
Token: SeRestorePrivilege	3704	wmic.exe
Token: SeShutdownPrivilege	3704	wmic.exe
Token: SeDebugPrivilege	3704	wmic.exe
Token: SeSystemEnvironmentPrivilege	3704	wmic.exe
Token: SeRemoteShutdownPrivilege	3704	wmic.exe
Token: SeUndockPrivilege	3704	wmic.exe
Token: SeManageVolumePrivilege	3704	wmic.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 4904 wrote to memory of 3616	4904	uhm, uhh.exe	74
PID 4904 wrote to memory of 3616	4904	uhm, uhh.exe	74
PID 4904 wrote to memory of 4236	4904	uhm, uhh.exe	77
PID 4904 wrote to memory of 4236	4904	uhm, uhh.exe	77
PID 4904 wrote to memory of 4448	4904	uhm, uhh.exe	79
PID 4904 wrote to memory of 4448	4904	uhm, uhh.exe	79
PID 4904 wrote to memory of 3920	4904	uhm, uhh.exe	81
PID 4904 wrote to memory of 3920	4904	uhm, uhh.exe	81
PID 4904 wrote to memory of 3704	4904	uhm, uhh.exe	83
PID 4904 wrote to memory of 3704	4904	uhm, uhh.exe	83
PID 4904 wrote to memory of 796	4904	uhm, uhh.exe	86
PID 4904 wrote to memory of 796	4904	uhm, uhh.exe	86
PID 4904 wrote to memory of 60	4904	uhm, uhh.exe	88
PID 4904 wrote to memory of 60	4904	uhm, uhh.exe	88
PID 4904 wrote to memory of 2592	4904	uhm, uhh.exe	90
PID 4904 wrote to memory of 2592	4904	uhm, uhh.exe	90
PID 4904 wrote to memory of 3480	4904	uhm, uhh.exe	92
PID 4904 wrote to memory of 3480	4904	uhm, uhh.exe	92

C:\Users\Admin\AppData\Local\Temp\uhm, uhh.exe
"C:\Users\Admin\AppData\Local\Temp\uhm, uhh.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4904
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\uhm, uhh.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3616
- 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⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4236
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Get-ItemPropertyValue -Path HKCU:SOFTWARE\Roblox\RobloxStudioBrowser\roblox.com -Name .ROBLOSECURITY
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4448
- 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:3920
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:3704
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:796
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:60
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Get-ItemPropertyValue -Path 'HKLM:System\CurrentControlSet\Control\Session Manager\Environment' -Name PROCESSOR_IDENTIFIER
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  PID:2592
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:3480

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Web Service

T1102

Exfiltration

Impact

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Downloads

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

Filesize
3KB

MD5
8592ba100a78835a6b94d5949e13dfc1

SHA1
63e901200ab9a57c7dd4c078d7f75dcd3b357020

SHA256
fdd7d9def6f9f0c0f2e60dbc8a2d1999071cd7d3095e9e087bb1cda7a614ac3c

SHA512
87f98e6cb61b2a2a7d65710c4d33881d89715eb7a06e00d492259f35c3902498baabffc5886be0ec5a14312ad4c262e3fc40cd3a5cb91701af0fb229726b88c3

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

Filesize
1KB

MD5
b3e6a6dc2252085fe5963a753423f0cd

SHA1
ae4a63b68a942445cb9a003a6ff2bb148fc613c9

SHA256
9822b6a054e1bd82230977c45a1fda6b722c38ddfb964405fcea3b74347ebd45

SHA512
1655e8f323a02ba415f05e46a8ba31dfa7e3eeb5448befdcd61d2a2fde8ee36da91ce97765240065961d7924bb79497818d1c3f225a77dcbe91fc4a5df0e8e40

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

Filesize
1KB

MD5
e2bed7e58df54a97b127fdeb9c69188a

SHA1
7aae21abe68ccf168a871b2f57eb7320fa3f9724

SHA256
35da948fb423e58ce78ecbae58648820393a5fd69a6fdde01dd58eda24ab2e69

SHA512
a3d3e3810c700c90d25cafbc0741785d44f563b02897451a72c701b724561ca3713fd2231f0c68c4db94e24ba40267e775d1d72b5bcd6b4a84e66c118fbfcc5b

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

Filesize
1KB

MD5
0764993eb94557e946e07659a648ddd4

SHA1
35af5f197c0c7cefd93bf731800d696e85f6c187

SHA256
caf2412e7aa1590ae84dcb22ba1c2b0e151765cd30b05e0ecab898e288c24893

SHA512
cce9d1ddc51c3c1901924b62432a6659dba4bd1855ad33e4a82ff789bc0f6e621bac844c75793995f41405702a464679c32b5110e083c772b7169972d5a5f306

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

Filesize
1KB

MD5
20988e300f36924c46aa97ea2987b75b

SHA1
8da4abc9548ef49017699535c3efaba83f5df788

SHA256
2a8a9c3ecf64618d9d0ab232d3fed7281b4ad0c303cfaa74f0d46ab0adc18ced

SHA512
2a504b656bba1f3569de79801018f727e35f80e6bdad53a95f559f55e9050687114dedffc64eea74537cabeeadc185b1001f2ee80cb0af805602e02c2807c961

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_qwzwytzb.w1t.ps1

Filesize
1B

MD5
c4ca4238a0b923820dcc509a6f75849b

SHA1
356a192b7913b04c54574d18c28d46e6395428ab

SHA256
6b86b273ff34fce19d6b804eff5a3f5747ada4eaa22f1d49c01e52ddb7875b4b

SHA512
4dff4ea340f0a823f15d3f4f01ab62eae0e5da579ccb851f8db9dfe84c58b2b37b89903a740e1ee172da793a6e79d560e5f7f9bd058a12a280433ed6fa46510a

Download Submit
memory/3616-49-0x00007FF97EED0000-0x00007FF97F8BC000-memory.dmp

Filesize
9.9MB

Download
memory/3616-7-0x00007FF97EED0000-0x00007FF97F8BC000-memory.dmp

Filesize
9.9MB

Download
memory/3616-10-0x00007FF97EED0000-0x00007FF97F8BC000-memory.dmp

Filesize
9.9MB

Download
memory/3616-42-0x00007FF97EED0000-0x00007FF97F8BC000-memory.dmp

Filesize
9.9MB

Download
memory/3616-13-0x00000213ED7B0000-0x00000213ED826000-memory.dmp

Filesize
472KB

Download
memory/3616-53-0x00007FF97EED0000-0x00007FF97F8BC000-memory.dmp

Filesize
9.9MB

Download
memory/3616-9-0x00007FF97EED0000-0x00007FF97F8BC000-memory.dmp

Filesize
9.9MB

Download
memory/3616-8-0x00000213ED1B0000-0x00000213ED1D2000-memory.dmp

Filesize
136KB

Download
memory/4904-84-0x0000023E78A10000-0x0000023E78A60000-memory.dmp

Filesize
320KB

Download
memory/4904-85-0x0000023E78B30000-0x0000023E78B4E000-memory.dmp

Filesize
120KB

Download
memory/4904-1-0x00007FF97EED3000-0x00007FF97EED4000-memory.dmp

Filesize
4KB

Download
memory/4904-2-0x00007FF97EED0000-0x00007FF97F8BC000-memory.dmp

Filesize
9.9MB

Download
memory/4904-149-0x0000023E789E0000-0x0000023E789EA000-memory.dmp

Filesize
40KB

Download
memory/4904-150-0x0000023E78AE0000-0x0000023E78AF2000-memory.dmp

Filesize
72KB

Download
memory/4904-0-0x0000023E76370000-0x0000023E763B0000-memory.dmp

Filesize
256KB

Download
memory/4904-180-0x00007FF97EED0000-0x00007FF97F8BC000-memory.dmp

Filesize
9.9MB

Download