3bee59e5cd394fb76382fa533f51d77fbaf3e2f93f4581466f682b1c047edf9c

Analysis

max time kernel
143s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20230831-en
resource tags

arch:x64arch:x86image:win10v2004-20230831-enlocale:en-usos:windows10-2004-x64system
submitted
07-09-2023 19:44

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General

Target

2023-08-23_b98f1c3ea99ae80025bff40ea3e97998_cobalt-strike_cobaltstrike_meterpreter_JC.dll
Size

203KB
MD5

b98f1c3ea99ae80025bff40ea3e97998
SHA1

7940feaa602f82dde5fe2bbbeccf7bc66c9ef090
SHA256

3bee59e5cd394fb76382fa533f51d77fbaf3e2f93f4581466f682b1c047edf9c
SHA512

83d035fb2d7444818f22c0a6a79ab9bf2ef63d4d21fe36feebf76c735390b8a12b458db003084d3c7db52480011c10dbfa2965ab7d7cd5847a853b77bff4ab4a
SSDEEP

3072:PYaW8qUEflaASmkDs1oo8CUS5D+u73vqQ+z+F62hAxquMfgj5jdUT519:PFHEfoAaDQoo8CUwxTvhU+F66fgVj

Score

5^/10

Malware Config

Signatures

Drops file in System32 directory 1 IoCs

Processes:

svchost.exe

description	ioc	process
File created	C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\InstallService\{92175CE9-04AB-4764-9DB1-CDA4418A792E}.catalogItem	svchost.exe

Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

4736 5020 WerFault.exe rundll32.exe

pid	pid_target	process	target process
4736	5020	WerFault.exe	rundll32.exe

Checks processor information in registry 2 TTPs 3 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

Processes:

svchost.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	svchost.exe

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry

T1012

System Information Discovery

T1082

Processes:

svchost.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	svchost.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

rundll32.exe

description	pid	process	target process
PID 3908 wrote to memory of 5020	3908	rundll32.exe	rundll32.exe
PID 3908 wrote to memory of 5020	3908	rundll32.exe	rundll32.exe
PID 3908 wrote to memory of 5020	3908	rundll32.exe	rundll32.exe

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\2023-08-23_b98f1c3ea99ae80025bff40ea3e97998_cobalt-strike_cobaltstrike_meterpreter_JC.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3908

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\2023-08-23_b98f1c3ea99ae80025bff40ea3e97998_cobalt-strike_cobaltstrike_meterpreter_JC.dll,#1
2⤵
PID:5020

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 5020 -s 640
3⤵
- Program crash
PID:4736

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k netsvcs -p
1⤵
- Drops file in System32 directory
- Checks processor information in registry
- Enumerates system info in registry
PID:4120

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 184 -p 5020 -ip 5020
1⤵
PID:3636

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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