blackmoon | 31e1dbec882158fc7c64c46401e3b15a18ae4d3aba62ee7024b981266664f04f

Analysis

max time kernel
134s
max time network
103s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
24-05-2024 01:08

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General

Target

31e1dbec882158fc7c64c46401e3b15a18ae4d3aba62ee7024b981266664f04f.dll
Size

4.4MB
MD5

81f17e2646be7a2c1378f6f45247c06a
SHA1

1318734082fb4a141dcec26436019af08c92eaf2
SHA256

31e1dbec882158fc7c64c46401e3b15a18ae4d3aba62ee7024b981266664f04f
SHA512

812fe51d3e3b12617e878f82d9583364b3571a0f890f3ac9a56dfae6b3eee2aaf6c88c0e4fa11c1bd9316c92754e897ff6d94e882bb0f0807530dc64d6da4690
SSDEEP

98304:95M8oOvAZXdzxK8JWLhU+OiO+/la502yn2IzUdzOHcZRXgR:95Mgv2fjWLHP9laG5nudSH2RXgR

Score

10^/10

blackmoon banker evasion themida trojan

Malware Config

Signatures

Blackmoon, KrBanker
Blackmoon also known as KrBanker is banking trojan first discovered in early 2014.
trojan banker blackmoon

Detect Blackmoon payload 3 IoCs

Processes:

resource	yara_rule
behavioral2/memory/2576-2-0x0000000010000000-0x0000000010A8C000-memory.dmp	family_blackmoon
behavioral2/memory/2576-4-0x0000000010000000-0x0000000010A8C000-memory.dmp	family_blackmoon
behavioral2/memory/2576-3-0x0000000010000000-0x0000000010A8C000-memory.dmp	family_blackmoon

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

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497

Processes:

rundll32.exe

description ioc process

Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ rundll32.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	rundll32.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:

rundll32.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	rundll32.exe

Themida packer 5 IoCs

Detects Themida, an advanced Windows software protection system.

themida

Processes:

resource	yara_rule
behavioral2/memory/2576-0-0x0000000010000000-0x0000000010A8C000-memory.dmp	themida
behavioral2/memory/2576-1-0x0000000010000000-0x0000000010A8C000-memory.dmp	themida
behavioral2/memory/2576-2-0x0000000010000000-0x0000000010A8C000-memory.dmp	themida
behavioral2/memory/2576-4-0x0000000010000000-0x0000000010A8C000-memory.dmp	themida
behavioral2/memory/2576-3-0x0000000010000000-0x0000000010A8C000-memory.dmp	themida

Checks whether UAC is enabled 1 TTPs 1 IoCs
evasion trojan

System Information Discovery
T1082

Processes:

rundll32.exe

description ioc process

Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA rundll32.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

rundll32.exe

description	pid	process	target process
PID 736 wrote to memory of 2576	736	rundll32.exe	rundll32.exe
PID 736 wrote to memory of 2576	736	rundll32.exe	rundll32.exe
PID 736 wrote to memory of 2576	736	rundll32.exe	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\31e1dbec882158fc7c64c46401e3b15a18ae4d3aba62ee7024b981266664f04f.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:736

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\31e1dbec882158fc7c64c46401e3b15a18ae4d3aba62ee7024b981266664f04f.dll,#1
2⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Checks whether UAC is enabled
PID:2576

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

T1497

Credential Access

Discovery

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

memory/2576-0-0x0000000010000000-0x0000000010A8C000-memory.dmp

Filesize
10.5MB

Download
memory/2576-1-0x0000000010000000-0x0000000010A8C000-memory.dmp

Filesize
10.5MB

Download
memory/2576-2-0x0000000010000000-0x0000000010A8C000-memory.dmp

Filesize
10.5MB

Download
memory/2576-4-0x0000000010000000-0x0000000010A8C000-memory.dmp

Filesize
10.5MB

Download
memory/2576-3-0x0000000010000000-0x0000000010A8C000-memory.dmp

Filesize
10.5MB

Download