Malware Analysis Report

2024-08-06 18:56

Sample ID 240620-hk8jtsvbqe
Target 03c53d49e1ab788b6ef10ab30352e99a_JaffaCakes118
SHA256 af33515824f66cae123b39cb59bf1364aa7690ba1e0ebdf51645358ebb2bf406
Tags
darkcomet rat trojan upx
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK Matrix

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

af33515824f66cae123b39cb59bf1364aa7690ba1e0ebdf51645358ebb2bf406

Threat Level: Known bad

The file 03c53d49e1ab788b6ef10ab30352e99a_JaffaCakes118 was found to be: Known bad.

Malicious Activity Summary

darkcomet rat trojan upx

Darkcomet

UPX packed file

Uses the VBS compiler for execution

Suspicious use of SetThreadContext

Enumerates physical storage devices

Unsigned PE

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

Checks processor information in registry

Suspicious use of AdjustPrivilegeToken

Suspicious use of FindShellTrayWindow

Enumerates system info in registry

MITRE ATT&CK Matrix V13

Initial Access
TA0001
Execution
TA0002
Scripting
T1064
Persistence
TA0003
Privilege Escalation
TA0004
Defense Evasion
TA0005
Scripting
T1064
Credential Access
TA0006
Discovery
TA0007
System Information Discovery
T1082
Query Registry
T1012
Lateral Movement
TA0008
Collection
TA0009
Exfiltration
TA0010
Command and Control
TA0011
Impact
TA0040
Resource Development
TA0042
Reconnaissance
TA0043

Analysis: static1

Detonation Overview

Reported

2024-06-20 06:48

Signatures

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-20 06:48

Reported

2024-06-20 06:51

Platform

win7-20240611-en

Max time kernel

93s

Max time network

124s

Command Line

"C:\Users\Admin\AppData\Local\Temp\03c53d49e1ab788b6ef10ab30352e99a_JaffaCakes118.exe"

Signatures

Darkcomet

trojan rat darkcomet

UPX packed file

upx
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Uses the VBS compiler for execution

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 2852 set thread context of 2640 N/A C:\Users\Admin\AppData\Local\Temp\03c53d49e1ab788b6ef10ab30352e99a_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe

Enumerates physical storage devices

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeIncreaseQuotaPrivilege N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe N/A
Token: SeSecurityPrivilege N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe N/A
Token: SeTakeOwnershipPrivilege N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe N/A
Token: SeLoadDriverPrivilege N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe N/A
Token: SeSystemProfilePrivilege N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe N/A
Token: SeSystemtimePrivilege N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe N/A
Token: SeProfSingleProcessPrivilege N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe N/A
Token: SeCreatePagefilePrivilege N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe N/A
Token: SeBackupPrivilege N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe N/A
Token: SeRestorePrivilege N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe N/A
Token: SeShutdownPrivilege N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe N/A
Token: SeSystemEnvironmentPrivilege N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe N/A
Token: SeChangeNotifyPrivilege N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe N/A
Token: SeRemoteShutdownPrivilege N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe N/A
Token: SeUndockPrivilege N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe N/A
Token: SeManageVolumePrivilege N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe N/A
Token: SeImpersonatePrivilege N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe N/A
Token: SeCreateGlobalPrivilege N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe N/A
Token: 33 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe N/A
Token: 34 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe N/A
Token: 35 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe N/A

Suspicious use of FindShellTrayWindow

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\DllHost.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2852 wrote to memory of 2640 N/A C:\Users\Admin\AppData\Local\Temp\03c53d49e1ab788b6ef10ab30352e99a_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 2852 wrote to memory of 2640 N/A C:\Users\Admin\AppData\Local\Temp\03c53d49e1ab788b6ef10ab30352e99a_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 2852 wrote to memory of 2640 N/A C:\Users\Admin\AppData\Local\Temp\03c53d49e1ab788b6ef10ab30352e99a_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 2852 wrote to memory of 2640 N/A C:\Users\Admin\AppData\Local\Temp\03c53d49e1ab788b6ef10ab30352e99a_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 2852 wrote to memory of 2640 N/A C:\Users\Admin\AppData\Local\Temp\03c53d49e1ab788b6ef10ab30352e99a_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 2852 wrote to memory of 2640 N/A C:\Users\Admin\AppData\Local\Temp\03c53d49e1ab788b6ef10ab30352e99a_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 2852 wrote to memory of 2640 N/A C:\Users\Admin\AppData\Local\Temp\03c53d49e1ab788b6ef10ab30352e99a_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 2852 wrote to memory of 2640 N/A C:\Users\Admin\AppData\Local\Temp\03c53d49e1ab788b6ef10ab30352e99a_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe

Processes

C:\Users\Admin\AppData\Local\Temp\03c53d49e1ab788b6ef10ab30352e99a_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\03c53d49e1ab788b6ef10ab30352e99a_JaffaCakes118.exe"

C:\Windows\SysWOW64\DllHost.exe

C:\Windows\SysWOW64\DllHost.exe /Processid:{76D0CB12-7604-4048-B83C-1005C7DDC503}

C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe

C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe

Network

Country Destination Domain Proto
US 8.8.8.8:53 whatintheworld.no-ip.biz udp

Files

memory/2852-0-0x00000000749E1000-0x00000000749E2000-memory.dmp

memory/2852-1-0x00000000749E0000-0x0000000074F8B000-memory.dmp

memory/2852-2-0x00000000749E0000-0x0000000074F8B000-memory.dmp

memory/2624-5-0x00000000000F0000-0x00000000000F2000-memory.dmp

memory/2852-4-0x00000000020D0000-0x00000000020D2000-memory.dmp

memory/2640-12-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/2640-10-0x0000000000400000-0x00000000004B9000-memory.dmp

memory/2640-8-0x0000000000400000-0x00000000004B9000-memory.dmp

memory/2640-6-0x0000000000400000-0x00000000004B9000-memory.dmp

memory/2640-13-0x0000000000400000-0x00000000004B9000-memory.dmp

memory/2852-15-0x00000000749E0000-0x0000000074F8B000-memory.dmp

memory/2640-16-0x0000000000400000-0x00000000004B9000-memory.dmp

memory/2640-14-0x0000000000400000-0x00000000004B9000-memory.dmp

memory/2640-17-0x0000000000400000-0x00000000004B9000-memory.dmp

memory/2640-19-0x0000000000400000-0x00000000004B9000-memory.dmp

memory/2640-20-0x0000000000400000-0x00000000004B9000-memory.dmp

memory/2640-18-0x0000000000400000-0x00000000004B9000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\thumbail4.png

MD5 cdba9ae7d72a67f1767ffa82f53238ac
SHA1 63810cba511dbd748a27e1d70b44689539249609
SHA256 72cb26c7cef3ca8bd93c3ad0b8d6cca4dcac5966371742e49154df995e98c7c7
SHA512 e7cd39d72c05d61763bafb22e004a6bbe1d8bbf603e5cc840fc78cdb176012fad73b7cae0358ab5ada1a4765d35749a98f3ba45e31011f2ae864b425b0c1d7b2

memory/2640-22-0x0000000000400000-0x00000000004B9000-memory.dmp

memory/2640-23-0x0000000000400000-0x00000000004B9000-memory.dmp

memory/2640-24-0x0000000000400000-0x00000000004B9000-memory.dmp

memory/2640-25-0x0000000000400000-0x00000000004B9000-memory.dmp

memory/2640-26-0x0000000000400000-0x00000000004B9000-memory.dmp

memory/2640-27-0x0000000000400000-0x00000000004B9000-memory.dmp

memory/2640-28-0x0000000000400000-0x00000000004B9000-memory.dmp

memory/2640-29-0x0000000000400000-0x00000000004B9000-memory.dmp

memory/2640-30-0x0000000000400000-0x00000000004B9000-memory.dmp

memory/2640-31-0x0000000000400000-0x00000000004B9000-memory.dmp

memory/2640-32-0x0000000000400000-0x00000000004B9000-memory.dmp

memory/2640-33-0x0000000000400000-0x00000000004B9000-memory.dmp

memory/2640-34-0x0000000000400000-0x00000000004B9000-memory.dmp

memory/2640-35-0x0000000000400000-0x00000000004B9000-memory.dmp

memory/2640-36-0x0000000000400000-0x00000000004B9000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-20 06:48

Reported

2024-06-20 06:51

Platform

win10v2004-20240611-en

Max time kernel

138s

Max time network

125s

Command Line

"C:\Users\Admin\AppData\Local\Temp\03c53d49e1ab788b6ef10ab30352e99a_JaffaCakes118.exe"

Signatures

Enumerates physical storage devices

Checks processor information in registry

Description Indicator Process Target
Key opened \REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0 C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe N/A

Enumerates system info in registry

Description Indicator Process Target
Key opened \REGISTRY\MACHINE\Hardware\Description\System\BIOS C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeRestorePrivilege N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe N/A
Token: SeBackupPrivilege N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe N/A
Token: SeBackupPrivilege N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe N/A
Token: SeBackupPrivilege N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3104 wrote to memory of 1512 N/A C:\Users\Admin\AppData\Local\Temp\03c53d49e1ab788b6ef10ab30352e99a_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe
PID 3104 wrote to memory of 1512 N/A C:\Users\Admin\AppData\Local\Temp\03c53d49e1ab788b6ef10ab30352e99a_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe
PID 3104 wrote to memory of 1512 N/A C:\Users\Admin\AppData\Local\Temp\03c53d49e1ab788b6ef10ab30352e99a_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe

Processes

C:\Users\Admin\AppData\Local\Temp\03c53d49e1ab788b6ef10ab30352e99a_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\03c53d49e1ab788b6ef10ab30352e99a_JaffaCakes118.exe"

C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe

dw20.exe -x -s 828

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 0.205.248.87.in-addr.arpa udp
US 8.8.8.8:53 68.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.237:443 g.bing.com tcp
NL 23.62.61.194:443 www.bing.com tcp
US 8.8.8.8:53 55.36.223.20.in-addr.arpa udp
US 8.8.8.8:53 194.61.62.23.in-addr.arpa udp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 10.27.171.150.in-addr.arpa udp

Files

memory/3104-0-0x0000000074A12000-0x0000000074A13000-memory.dmp

memory/3104-1-0x0000000074A10000-0x0000000074FC1000-memory.dmp

memory/3104-2-0x0000000074A10000-0x0000000074FC1000-memory.dmp

memory/3104-10-0x0000000074A10000-0x0000000074FC1000-memory.dmp