darkstealer | 9388288b3a18d968cd47446d545eb63d272bac65c0ad1d490beb389d94d2e9e0

General

Target

033362225cf09b9ae543da265c7d1885.exe
Size

3.4MB
MD5

033362225cf09b9ae543da265c7d1885
SHA1

4d2b95b71dd92277718b54a341ba62b24c95c888
SHA256

9388288b3a18d968cd47446d545eb63d272bac65c0ad1d490beb389d94d2e9e0
SHA512

41b858735f309c938db681cd1a974dd47c7ff0fe3286f713ce50d4c7e070e64af26dd9a2dfe59f7a559d4255557d0926406c66996edb819ab466f4527349543e
SSDEEP

98304:UVrHzZ9ACjcIOrJkqn7lAmpe+oO8XuhAAe9tSys3mm:UVDzZCkcI66qn7lAmlobXuO9tSvf

Score

10^/10

darkstealer echelon backdoor collection discovery evasion spyware stealer themida trojan

Malware Config

Signatures

Darkstealer
Darkstealer is a file grabber, data stealer, and RAT.
trojan backdoor darkstealer

Detects Echelon Stealer payload 3 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2888-25-0x0000000001190000-0x0000000001AD8000-memory.dmp	family_echelon
behavioral1/memory/2888-24-0x0000000001190000-0x0000000001AD8000-memory.dmp	family_echelon
behavioral1/memory/2888-87-0x0000000001190000-0x0000000001AD8000-memory.dmp	family_echelon

Echelon
Echelon is a .NET stealer that targets passwords from browsers, email and cryptocurrency clients.
stealer spyware echelon

Echelon - DarkStealer Fork 3 IoCs

Payload resembles modified variant of Echelon Stealer called DarkStealer.

stealer

Processes:

resource	yara_rule
behavioral1/memory/2888-25-0x0000000001190000-0x0000000001AD8000-memory.dmp	echelon_darkstealer
behavioral1/memory/2888-24-0x0000000001190000-0x0000000001AD8000-memory.dmp	echelon_darkstealer
behavioral1/memory/2888-87-0x0000000001190000-0x0000000001AD8000-memory.dmp	echelon_darkstealer

Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

Processes:

033362225cf09b9ae543da265c7d1885.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	033362225cf09b9ae543da265c7d1885.exe

Checks BIOS information in registry 2 TTPs 2 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

033362225cf09b9ae543da265c7d1885.exe

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	033362225cf09b9ae543da265c7d1885.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	033362225cf09b9ae543da265c7d1885.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

Themida packer 3 IoCs

Detects Themida, an advanced Windows software protection system.

themida

Processes:

resource	yara_rule
behavioral1/memory/2888-25-0x0000000001190000-0x0000000001AD8000-memory.dmp	themida
behavioral1/memory/2888-24-0x0000000001190000-0x0000000001AD8000-memory.dmp	themida
behavioral1/memory/2888-87-0x0000000001190000-0x0000000001AD8000-memory.dmp	themida

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

Processes:

033362225cf09b9ae543da265c7d1885.exe

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3470981204-343661084-3367201002-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	033362225cf09b9ae543da265c7d1885.exe
Key opened	\REGISTRY\USER\S-1-5-21-3470981204-343661084-3367201002-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	033362225cf09b9ae543da265c7d1885.exe
Key opened	\REGISTRY\USER\S-1-5-21-3470981204-343661084-3367201002-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	033362225cf09b9ae543da265c7d1885.exe

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

Processes:

033362225cf09b9ae543da265c7d1885.exe

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	033362225cf09b9ae543da265c7d1885.exe

Looks up external IP address via web service 4 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow	ioc
4	api.ipify.org
5	api.ipify.org
6	ip-api.com
8	api.ipify.org

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

Processes:

033362225cf09b9ae543da265c7d1885.exe

pid	Process
2888	033362225cf09b9ae543da265c7d1885.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

033362225cf09b9ae543da265c7d1885.exe

pid	Process
2888	033362225cf09b9ae543da265c7d1885.exe
2888	033362225cf09b9ae543da265c7d1885.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

033362225cf09b9ae543da265c7d1885.exe

description	pid	Process
Token: SeDebugPrivilege	2888	033362225cf09b9ae543da265c7d1885.exe

outlook_office_path 1 IoCs

Processes:

033362225cf09b9ae543da265c7d1885.exe

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3470981204-343661084-3367201002-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	033362225cf09b9ae543da265c7d1885.exe

outlook_win_path 1 IoCs

Processes:

033362225cf09b9ae543da265c7d1885.exe

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3470981204-343661084-3367201002-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	033362225cf09b9ae543da265c7d1885.exe

C:\Users\Admin\AppData\Local\Temp\033362225cf09b9ae543da265c7d1885.exe
"C:\Users\Admin\AppData\Local\Temp\033362225cf09b9ae543da265c7d1885.exe"
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Accesses Microsoft Outlook profiles
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:2888

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

1

T1497

Credential Access

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Query Registry

3

T1012

System Information Discovery

2

T1082

Virtualization/Sandbox Evasion

1

T1497

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/2888-0-0x0000000001190000-0x0000000001AD8000-memory.dmp

Filesize
9.3MB

Download
memory/2888-1-0x0000000075740000-0x0000000075850000-memory.dmp

Filesize
1.1MB

Download
memory/2888-2-0x0000000075740000-0x0000000075850000-memory.dmp

Filesize
1.1MB

Download
memory/2888-3-0x0000000075740000-0x0000000075850000-memory.dmp

Filesize
1.1MB

Download
memory/2888-4-0x0000000075740000-0x0000000075850000-memory.dmp

Filesize
1.1MB

Download
memory/2888-6-0x0000000075740000-0x0000000075850000-memory.dmp

Filesize
1.1MB

Download
memory/2888-17-0x00000000750C0000-0x0000000075107000-memory.dmp

Filesize
284KB

Download
memory/2888-22-0x0000000077540000-0x0000000077542000-memory.dmp

Filesize
8KB

Download
memory/2888-21-0x0000000075740000-0x0000000075850000-memory.dmp

Filesize
1.1MB

Download
memory/2888-25-0x0000000001190000-0x0000000001AD8000-memory.dmp

Filesize
9.3MB

Download
memory/2888-24-0x0000000001190000-0x0000000001AD8000-memory.dmp

Filesize
9.3MB

Download
memory/2888-23-0x0000000074550000-0x0000000074C3E000-memory.dmp

Filesize
6.9MB

Download
memory/2888-20-0x0000000075740000-0x0000000075850000-memory.dmp

Filesize
1.1MB

Download
memory/2888-19-0x0000000075740000-0x0000000075850000-memory.dmp

Filesize
1.1MB

Download
memory/2888-27-0x00000000051C0000-0x0000000005200000-memory.dmp

Filesize
256KB

Download
memory/2888-18-0x0000000075740000-0x0000000075850000-memory.dmp

Filesize
1.1MB

Download
memory/2888-16-0x0000000075740000-0x0000000075850000-memory.dmp

Filesize
1.1MB

Download
memory/2888-15-0x00000000750C0000-0x0000000075107000-memory.dmp

Filesize
284KB

Download
memory/2888-14-0x00000000750C0000-0x0000000075107000-memory.dmp

Filesize
284KB

Download
memory/2888-13-0x0000000075740000-0x0000000075850000-memory.dmp

Filesize
1.1MB

Download
memory/2888-12-0x0000000075740000-0x0000000075850000-memory.dmp

Filesize
1.1MB

Download
memory/2888-11-0x0000000075740000-0x0000000075850000-memory.dmp

Filesize
1.1MB

Download
memory/2888-10-0x0000000075740000-0x0000000075850000-memory.dmp

Filesize
1.1MB

Download
memory/2888-9-0x0000000075740000-0x0000000075850000-memory.dmp

Filesize
1.1MB

Download
memory/2888-5-0x0000000075740000-0x0000000075850000-memory.dmp

Filesize
1.1MB

Download
memory/2888-87-0x0000000001190000-0x0000000001AD8000-memory.dmp

Filesize
9.3MB

Download
memory/2888-89-0x00000000750C0000-0x0000000075107000-memory.dmp

Filesize
284KB

Download
memory/2888-90-0x0000000074550000-0x0000000074C3E000-memory.dmp

Filesize
6.9MB

Download
memory/2888-88-0x0000000075740000-0x0000000075850000-memory.dmp

Filesize
1.1MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads