darkstealer | dd11659543b958d2dd58b0a694a2c574aaf94f5edd8689860e9c4a36b5530cee

General

Target

51b9711c5637cdf4a5b44f6dd9bb3eda_JaffaCakes118.exe
Size

3.8MB
MD5

51b9711c5637cdf4a5b44f6dd9bb3eda
SHA1

b4851f0f4a1568130763142dfecce532f8dca6e3
SHA256

dd11659543b958d2dd58b0a694a2c574aaf94f5edd8689860e9c4a36b5530cee
SHA512

69347285283b80d45e2f988500d54fba9fcb5fb6711f33cb92d12d8ce71deb088027a8e57ec525906f12133b75a12ed5b03b66e8a4bc06ee229fd15270a8a0f8
SSDEEP

98304:zHDIrXrCr0zwGfGmxDw8Ea2vmq/CAtnx/9uQa9:zjIrWIzbfBDwTa2e5Ahx/9Ba

Score

10^/10

darkstealer echelon backdoor collection 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
behavioral2/memory/3052-13-0x0000000000DC0000-0x0000000001788000-memory.dmp	family_echelon
behavioral2/memory/3052-14-0x0000000000DC0000-0x0000000001788000-memory.dmp	family_echelon
behavioral2/memory/3052-22-0x0000000000DC0000-0x0000000001788000-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
behavioral2/memory/3052-13-0x0000000000DC0000-0x0000000001788000-memory.dmp	echelon_darkstealer
behavioral2/memory/3052-14-0x0000000000DC0000-0x0000000001788000-memory.dmp	echelon_darkstealer
behavioral2/memory/3052-22-0x0000000000DC0000-0x0000000001788000-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:

51b9711c5637cdf4a5b44f6dd9bb3eda_JaffaCakes118.exe

description ioc process

Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ 51b9711c5637cdf4a5b44f6dd9bb3eda_JaffaCakes118.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	51b9711c5637cdf4a5b44f6dd9bb3eda_JaffaCakes118.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:

51b9711c5637cdf4a5b44f6dd9bb3eda_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	51b9711c5637cdf4a5b44f6dd9bb3eda_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	51b9711c5637cdf4a5b44f6dd9bb3eda_JaffaCakes118.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
behavioral2/memory/3052-13-0x0000000000DC0000-0x0000000001788000-memory.dmp	themida
behavioral2/memory/3052-14-0x0000000000DC0000-0x0000000001788000-memory.dmp	themida
behavioral2/memory/3052-22-0x0000000000DC0000-0x0000000001788000-memory.dmp	themida

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

Processes:

51b9711c5637cdf4a5b44f6dd9bb3eda_JaffaCakes118.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-701583114-2636601053-947405450-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	51b9711c5637cdf4a5b44f6dd9bb3eda_JaffaCakes118.exe
Key opened	\REGISTRY\USER\S-1-5-21-701583114-2636601053-947405450-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	51b9711c5637cdf4a5b44f6dd9bb3eda_JaffaCakes118.exe
Key opened	\REGISTRY\USER\S-1-5-21-701583114-2636601053-947405450-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	51b9711c5637cdf4a5b44f6dd9bb3eda_JaffaCakes118.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

Processes:

51b9711c5637cdf4a5b44f6dd9bb3eda_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	51b9711c5637cdf4a5b44f6dd9bb3eda_JaffaCakes118.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

Processes:

51b9711c5637cdf4a5b44f6dd9bb3eda_JaffaCakes118.exe

pid process

3052 51b9711c5637cdf4a5b44f6dd9bb3eda_JaffaCakes118.exe
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

4976 3052 WerFault.exe 51b9711c5637cdf4a5b44f6dd9bb3eda_JaffaCakes118.exe
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

51b9711c5637cdf4a5b44f6dd9bb3eda_JaffaCakes118.exe

pid process

3052 51b9711c5637cdf4a5b44f6dd9bb3eda_JaffaCakes118.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

51b9711c5637cdf4a5b44f6dd9bb3eda_JaffaCakes118.exe

description pid process

Token: SeDebugPrivilege 3052 51b9711c5637cdf4a5b44f6dd9bb3eda_JaffaCakes118.exe

pid	process
3052	51b9711c5637cdf4a5b44f6dd9bb3eda_JaffaCakes118.exe

pid	pid_target	process	target process
4976	3052	WerFault.exe	51b9711c5637cdf4a5b44f6dd9bb3eda_JaffaCakes118.exe

pid	process
3052	51b9711c5637cdf4a5b44f6dd9bb3eda_JaffaCakes118.exe

description	pid	process
Token: SeDebugPrivilege	3052	51b9711c5637cdf4a5b44f6dd9bb3eda_JaffaCakes118.exe

outlook_office_path 1 IoCs

Processes:

51b9711c5637cdf4a5b44f6dd9bb3eda_JaffaCakes118.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-701583114-2636601053-947405450-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	51b9711c5637cdf4a5b44f6dd9bb3eda_JaffaCakes118.exe

outlook_win_path 1 IoCs

Processes:

51b9711c5637cdf4a5b44f6dd9bb3eda_JaffaCakes118.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-701583114-2636601053-947405450-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	51b9711c5637cdf4a5b44f6dd9bb3eda_JaffaCakes118.exe

C:\Users\Admin\AppData\Local\Temp\51b9711c5637cdf4a5b44f6dd9bb3eda_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\51b9711c5637cdf4a5b44f6dd9bb3eda_JaffaCakes118.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:3052
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3052 -s 1844
  2⤵
  - Program crash
  PID:4976

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3052 -ip 3052
1⤵
PID:2348

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

2

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/3052-0-0x0000000000DC0000-0x0000000001788000-memory.dmp

Filesize
9.8MB

Download
memory/3052-2-0x0000000076E40000-0x0000000076F30000-memory.dmp

Filesize
960KB

Download
memory/3052-1-0x0000000076E60000-0x0000000076E61000-memory.dmp

Filesize
4KB

Download
memory/3052-5-0x0000000076E40000-0x0000000076F30000-memory.dmp

Filesize
960KB

Download
memory/3052-4-0x0000000076E40000-0x0000000076F30000-memory.dmp

Filesize
960KB

Download
memory/3052-3-0x0000000076E40000-0x0000000076F30000-memory.dmp

Filesize
960KB

Download
memory/3052-8-0x0000000076E40000-0x0000000076F30000-memory.dmp

Filesize
960KB

Download
memory/3052-7-0x0000000076E40000-0x0000000076F30000-memory.dmp

Filesize
960KB

Download
memory/3052-6-0x0000000076E40000-0x0000000076F30000-memory.dmp

Filesize
960KB

Download
memory/3052-9-0x0000000076E40000-0x0000000076F30000-memory.dmp

Filesize
960KB

Download
memory/3052-13-0x0000000000DC0000-0x0000000001788000-memory.dmp

Filesize
9.8MB

Download
memory/3052-14-0x0000000000DC0000-0x0000000001788000-memory.dmp

Filesize
9.8MB

Download
memory/3052-15-0x0000000006150000-0x00000000061B6000-memory.dmp

Filesize
408KB

Download
memory/3052-20-0x0000000006B70000-0x0000000006C0C000-memory.dmp

Filesize
624KB

Download
memory/3052-22-0x0000000000DC0000-0x0000000001788000-memory.dmp

Filesize
9.8MB

Download
memory/3052-23-0x0000000076E40000-0x0000000076F30000-memory.dmp

Filesize
960KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads