Malware Analysis Report

2024-08-06 17:11

Sample ID 240421-vnyj9aga8z
Target ffc2e4b24496363b727f6e4dbca30824_JaffaCakes118
SHA256 039fb1c8675255b8edefc207b6362e0da58b6d9ddd767fea06a705ce54326fb8
Tags
darkcomet guest16 evasion persistence rat trojan
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

039fb1c8675255b8edefc207b6362e0da58b6d9ddd767fea06a705ce54326fb8

Threat Level: Known bad

The file ffc2e4b24496363b727f6e4dbca30824_JaffaCakes118 was found to be: Known bad.

Malicious Activity Summary

darkcomet guest16 evasion persistence rat trojan

Darkcomet

Modifies WinLogon for persistence

Identifies Wine through registry keys

Executes dropped EXE

Loads dropped DLL

Adds Run key to start application

Suspicious use of NtSetInformationThreadHideFromDebugger

Enumerates physical storage devices

Unsigned PE

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Suspicious behavior: EnumeratesProcesses

Suspicious use of SetWindowsHookEx

MITRE ATT&CK Matrix V13

Initial Access
TA0001
Execution
TA0002
Persistence
TA0003
Boot or Logon Autostart Execution
T1547
Registry Run Keys / Startup Folder
T1547.001
Winlogon Helper DLL
T1547.004
Privilege Escalation
TA0004
Boot or Logon Autostart Execution
T1547
Registry Run Keys / Startup Folder
T1547.001
Winlogon Helper DLL
T1547.004
Defense Evasion
TA0005
Modify Registry
T1112
Virtualization/Sandbox Evasion
T1497
Credential Access
TA0006
Discovery
TA0007
Query Registry
T1012
Virtualization/Sandbox Evasion
T1497
System Information Discovery
T1082
Lateral Movement
TA0008
Collection
TA0009
Exfiltration
TA0010
Command and Control
TA0011
Impact
TA0040
Resource Development
TA0042
Reconnaissance
TA0043

Analysis: static1

Detonation Overview

Reported

2024-04-21 17:08

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-04-21 17:08

Reported

2024-04-21 17:11

Platform

win7-20240221-en

Max time kernel

141s

Max time network

144s

Command Line

"C:\Users\Admin\AppData\Local\Temp\ffc2e4b24496363b727f6e4dbca30824_JaffaCakes118.exe"

Signatures

Darkcomet

trojan rat darkcomet

Modifies WinLogon for persistence

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\ProgramData\\Microsoft\\Windows\\Start Menu\\MSDCSC\\msdcsc.exe" C:\Users\Admin\AppData\Local\Temp\ffc2e4b24496363b727f6e4dbca30824_JaffaCakes118.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\ProgramData\Microsoft\Windows\Start Menu\MSDCSC\msdcsc.exe N/A

Identifies Wine through registry keys

evasion
Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Wine C:\Users\Admin\AppData\Local\Temp\ffc2e4b24496363b727f6e4dbca30824_JaffaCakes118.exe N/A
Key opened \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Wine C:\ProgramData\Microsoft\Windows\Start Menu\MSDCSC\msdcsc.exe N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\ffc2e4b24496363b727f6e4dbca30824_JaffaCakes118.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\ffc2e4b24496363b727f6e4dbca30824_JaffaCakes118.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\ProgramData\\Microsoft\\Windows\\Start Menu\\MSDCSC\\msdcsc.exe" C:\Users\Admin\AppData\Local\Temp\ffc2e4b24496363b727f6e4dbca30824_JaffaCakes118.exe N/A

Suspicious use of NtSetInformationThreadHideFromDebugger

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\ffc2e4b24496363b727f6e4dbca30824_JaffaCakes118.exe N/A
N/A N/A C:\ProgramData\Microsoft\Windows\Start Menu\MSDCSC\msdcsc.exe N/A

Enumerates physical storage devices

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\ffc2e4b24496363b727f6e4dbca30824_JaffaCakes118.exe N/A
N/A N/A C:\ProgramData\Microsoft\Windows\Start Menu\MSDCSC\msdcsc.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeIncreaseQuotaPrivilege N/A C:\Users\Admin\AppData\Local\Temp\ffc2e4b24496363b727f6e4dbca30824_JaffaCakes118.exe N/A
Token: SeSecurityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\ffc2e4b24496363b727f6e4dbca30824_JaffaCakes118.exe N/A
Token: SeTakeOwnershipPrivilege N/A C:\Users\Admin\AppData\Local\Temp\ffc2e4b24496363b727f6e4dbca30824_JaffaCakes118.exe N/A
Token: SeLoadDriverPrivilege N/A C:\Users\Admin\AppData\Local\Temp\ffc2e4b24496363b727f6e4dbca30824_JaffaCakes118.exe N/A
Token: SeSystemProfilePrivilege N/A C:\Users\Admin\AppData\Local\Temp\ffc2e4b24496363b727f6e4dbca30824_JaffaCakes118.exe N/A
Token: SeSystemtimePrivilege N/A C:\Users\Admin\AppData\Local\Temp\ffc2e4b24496363b727f6e4dbca30824_JaffaCakes118.exe N/A
Token: SeProfSingleProcessPrivilege N/A C:\Users\Admin\AppData\Local\Temp\ffc2e4b24496363b727f6e4dbca30824_JaffaCakes118.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\ffc2e4b24496363b727f6e4dbca30824_JaffaCakes118.exe N/A
Token: SeCreatePagefilePrivilege N/A C:\Users\Admin\AppData\Local\Temp\ffc2e4b24496363b727f6e4dbca30824_JaffaCakes118.exe N/A
Token: SeBackupPrivilege N/A C:\Users\Admin\AppData\Local\Temp\ffc2e4b24496363b727f6e4dbca30824_JaffaCakes118.exe N/A
Token: SeRestorePrivilege N/A C:\Users\Admin\AppData\Local\Temp\ffc2e4b24496363b727f6e4dbca30824_JaffaCakes118.exe N/A
Token: SeShutdownPrivilege N/A C:\Users\Admin\AppData\Local\Temp\ffc2e4b24496363b727f6e4dbca30824_JaffaCakes118.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\ffc2e4b24496363b727f6e4dbca30824_JaffaCakes118.exe N/A
Token: SeSystemEnvironmentPrivilege N/A C:\Users\Admin\AppData\Local\Temp\ffc2e4b24496363b727f6e4dbca30824_JaffaCakes118.exe N/A
Token: SeChangeNotifyPrivilege N/A C:\Users\Admin\AppData\Local\Temp\ffc2e4b24496363b727f6e4dbca30824_JaffaCakes118.exe N/A
Token: SeRemoteShutdownPrivilege N/A C:\Users\Admin\AppData\Local\Temp\ffc2e4b24496363b727f6e4dbca30824_JaffaCakes118.exe N/A
Token: SeUndockPrivilege N/A C:\Users\Admin\AppData\Local\Temp\ffc2e4b24496363b727f6e4dbca30824_JaffaCakes118.exe N/A
Token: SeManageVolumePrivilege N/A C:\Users\Admin\AppData\Local\Temp\ffc2e4b24496363b727f6e4dbca30824_JaffaCakes118.exe N/A
Token: SeImpersonatePrivilege N/A C:\Users\Admin\AppData\Local\Temp\ffc2e4b24496363b727f6e4dbca30824_JaffaCakes118.exe N/A
Token: SeCreateGlobalPrivilege N/A C:\Users\Admin\AppData\Local\Temp\ffc2e4b24496363b727f6e4dbca30824_JaffaCakes118.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\ffc2e4b24496363b727f6e4dbca30824_JaffaCakes118.exe N/A
Token: 34 N/A C:\Users\Admin\AppData\Local\Temp\ffc2e4b24496363b727f6e4dbca30824_JaffaCakes118.exe N/A
Token: 35 N/A C:\Users\Admin\AppData\Local\Temp\ffc2e4b24496363b727f6e4dbca30824_JaffaCakes118.exe N/A
Token: SeIncreaseQuotaPrivilege N/A C:\ProgramData\Microsoft\Windows\Start Menu\MSDCSC\msdcsc.exe N/A
Token: SeSecurityPrivilege N/A C:\ProgramData\Microsoft\Windows\Start Menu\MSDCSC\msdcsc.exe N/A
Token: SeTakeOwnershipPrivilege N/A C:\ProgramData\Microsoft\Windows\Start Menu\MSDCSC\msdcsc.exe N/A
Token: SeLoadDriverPrivilege N/A C:\ProgramData\Microsoft\Windows\Start Menu\MSDCSC\msdcsc.exe N/A
Token: SeSystemProfilePrivilege N/A C:\ProgramData\Microsoft\Windows\Start Menu\MSDCSC\msdcsc.exe N/A
Token: SeSystemtimePrivilege N/A C:\ProgramData\Microsoft\Windows\Start Menu\MSDCSC\msdcsc.exe N/A
Token: SeProfSingleProcessPrivilege N/A C:\ProgramData\Microsoft\Windows\Start Menu\MSDCSC\msdcsc.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\ProgramData\Microsoft\Windows\Start Menu\MSDCSC\msdcsc.exe N/A
Token: SeCreatePagefilePrivilege N/A C:\ProgramData\Microsoft\Windows\Start Menu\MSDCSC\msdcsc.exe N/A
Token: SeBackupPrivilege N/A C:\ProgramData\Microsoft\Windows\Start Menu\MSDCSC\msdcsc.exe N/A
Token: SeRestorePrivilege N/A C:\ProgramData\Microsoft\Windows\Start Menu\MSDCSC\msdcsc.exe N/A
Token: SeShutdownPrivilege N/A C:\ProgramData\Microsoft\Windows\Start Menu\MSDCSC\msdcsc.exe N/A
Token: SeDebugPrivilege N/A C:\ProgramData\Microsoft\Windows\Start Menu\MSDCSC\msdcsc.exe N/A
Token: SeSystemEnvironmentPrivilege N/A C:\ProgramData\Microsoft\Windows\Start Menu\MSDCSC\msdcsc.exe N/A
Token: SeChangeNotifyPrivilege N/A C:\ProgramData\Microsoft\Windows\Start Menu\MSDCSC\msdcsc.exe N/A
Token: SeRemoteShutdownPrivilege N/A C:\ProgramData\Microsoft\Windows\Start Menu\MSDCSC\msdcsc.exe N/A
Token: SeUndockPrivilege N/A C:\ProgramData\Microsoft\Windows\Start Menu\MSDCSC\msdcsc.exe N/A
Token: SeManageVolumePrivilege N/A C:\ProgramData\Microsoft\Windows\Start Menu\MSDCSC\msdcsc.exe N/A
Token: SeImpersonatePrivilege N/A C:\ProgramData\Microsoft\Windows\Start Menu\MSDCSC\msdcsc.exe N/A
Token: SeCreateGlobalPrivilege N/A C:\ProgramData\Microsoft\Windows\Start Menu\MSDCSC\msdcsc.exe N/A
Token: 33 N/A C:\ProgramData\Microsoft\Windows\Start Menu\MSDCSC\msdcsc.exe N/A
Token: 34 N/A C:\ProgramData\Microsoft\Windows\Start Menu\MSDCSC\msdcsc.exe N/A
Token: 35 N/A C:\ProgramData\Microsoft\Windows\Start Menu\MSDCSC\msdcsc.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\ProgramData\Microsoft\Windows\Start Menu\MSDCSC\msdcsc.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2020 wrote to memory of 2792 N/A C:\Users\Admin\AppData\Local\Temp\ffc2e4b24496363b727f6e4dbca30824_JaffaCakes118.exe C:\ProgramData\Microsoft\Windows\Start Menu\MSDCSC\msdcsc.exe
PID 2020 wrote to memory of 2792 N/A C:\Users\Admin\AppData\Local\Temp\ffc2e4b24496363b727f6e4dbca30824_JaffaCakes118.exe C:\ProgramData\Microsoft\Windows\Start Menu\MSDCSC\msdcsc.exe
PID 2020 wrote to memory of 2792 N/A C:\Users\Admin\AppData\Local\Temp\ffc2e4b24496363b727f6e4dbca30824_JaffaCakes118.exe C:\ProgramData\Microsoft\Windows\Start Menu\MSDCSC\msdcsc.exe
PID 2020 wrote to memory of 2792 N/A C:\Users\Admin\AppData\Local\Temp\ffc2e4b24496363b727f6e4dbca30824_JaffaCakes118.exe C:\ProgramData\Microsoft\Windows\Start Menu\MSDCSC\msdcsc.exe

Processes

C:\Users\Admin\AppData\Local\Temp\ffc2e4b24496363b727f6e4dbca30824_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\ffc2e4b24496363b727f6e4dbca30824_JaffaCakes118.exe"

C:\ProgramData\Microsoft\Windows\Start Menu\MSDCSC\msdcsc.exe

"C:\ProgramData\Microsoft\Windows\Start Menu\MSDCSC\msdcsc.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 dark123comet00.no-ip.biz udp
ES 94.73.36.254:1604 dark123comet00.no-ip.biz tcp
ES 94.73.36.254:1604 dark123comet00.no-ip.biz tcp
ES 94.73.36.254:1604 dark123comet00.no-ip.biz tcp
US 8.8.8.8:53 dark123comet00.no-ip.biz udp
ES 94.73.36.254:1604 dark123comet00.no-ip.biz tcp
ES 94.73.36.254:1604 dark123comet00.no-ip.biz tcp
ES 94.73.36.254:1604 dark123comet00.no-ip.biz tcp
US 8.8.8.8:53 dark123comet00.no-ip.biz udp
ES 94.73.36.254:1604 dark123comet00.no-ip.biz tcp

Files

memory/2020-0-0x0000000000400000-0x000000000068D000-memory.dmp

memory/2020-1-0x0000000000690000-0x0000000000691000-memory.dmp

memory/2020-2-0x00000000003F0000-0x00000000003F1000-memory.dmp

memory/2020-3-0x00000000006E0000-0x00000000006E1000-memory.dmp

memory/2020-4-0x00000000006B0000-0x00000000006B1000-memory.dmp

memory/2020-5-0x00000000003E0000-0x00000000003E1000-memory.dmp

memory/2020-6-0x00000000006F0000-0x00000000006F1000-memory.dmp

memory/2020-7-0x0000000000320000-0x0000000000380000-memory.dmp

memory/2020-8-0x0000000000400000-0x000000000068D000-memory.dmp

memory/2020-9-0x00000000053B0000-0x00000000053B1000-memory.dmp

memory/2020-10-0x00000000053C0000-0x00000000053C1000-memory.dmp

memory/2020-11-0x0000000000400000-0x000000000068D000-memory.dmp

memory/2020-12-0x0000000005230000-0x0000000005231000-memory.dmp

\ProgramData\Microsoft\Windows\Start Menu\MSDCSC\msdcsc.exe

MD5 ffc2e4b24496363b727f6e4dbca30824
SHA1 596e01d5c84cd459689c4bf69e3f83f4575be640
SHA256 039fb1c8675255b8edefc207b6362e0da58b6d9ddd767fea06a705ce54326fb8
SHA512 75a8da478550e1922621d3bbded40dd9baeb6e292cd493c8a5e116344565f20305c67969fa07f390ab54d113fc0471cdf37888dd2015cea881e7e4da10549493

memory/2792-24-0x0000000000400000-0x000000000068D000-memory.dmp

memory/2020-23-0x0000000006720000-0x00000000069AD000-memory.dmp

memory/2792-25-0x0000000000360000-0x00000000003C0000-memory.dmp

memory/2020-26-0x0000000006720000-0x00000000069AD000-memory.dmp

memory/2792-27-0x0000000000400000-0x000000000068D000-memory.dmp

memory/2020-28-0x0000000000400000-0x000000000068D000-memory.dmp

memory/2792-29-0x00000000053B0000-0x00000000053B1000-memory.dmp

memory/2792-30-0x00000000053C0000-0x00000000053C1000-memory.dmp

memory/2792-32-0x0000000000400000-0x000000000068D000-memory.dmp

memory/2792-31-0x0000000005230000-0x0000000005231000-memory.dmp

memory/2792-34-0x0000000000400000-0x000000000068D000-memory.dmp

memory/2792-35-0x0000000000400000-0x000000000068D000-memory.dmp

memory/2792-36-0x0000000000360000-0x00000000003C0000-memory.dmp

memory/2792-37-0x0000000000400000-0x000000000068D000-memory.dmp

memory/2792-38-0x0000000000400000-0x000000000068D000-memory.dmp

memory/2792-39-0x0000000000400000-0x000000000068D000-memory.dmp

memory/2792-40-0x0000000000400000-0x000000000068D000-memory.dmp

memory/2792-41-0x0000000000400000-0x000000000068D000-memory.dmp

memory/2792-42-0x0000000000400000-0x000000000068D000-memory.dmp

memory/2792-43-0x0000000000400000-0x000000000068D000-memory.dmp

memory/2792-44-0x0000000000400000-0x000000000068D000-memory.dmp

memory/2792-45-0x0000000000400000-0x000000000068D000-memory.dmp

memory/2792-46-0x0000000000400000-0x000000000068D000-memory.dmp

memory/2792-47-0x0000000000400000-0x000000000068D000-memory.dmp

memory/2792-48-0x0000000000400000-0x000000000068D000-memory.dmp

memory/2792-49-0x0000000000400000-0x000000000068D000-memory.dmp

memory/2792-50-0x0000000000400000-0x000000000068D000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-04-21 17:08

Reported

2024-04-21 17:11

Platform

win10v2004-20240226-en

Max time kernel

143s

Max time network

151s

Command Line

"C:\Users\Admin\AppData\Local\Temp\ffc2e4b24496363b727f6e4dbca30824_JaffaCakes118.exe"

Signatures

Identifies Wine through registry keys

evasion
Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Software\Wine C:\Users\Admin\AppData\Local\Temp\ffc2e4b24496363b727f6e4dbca30824_JaffaCakes118.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\ffc2e4b24496363b727f6e4dbca30824_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\ffc2e4b24496363b727f6e4dbca30824_JaffaCakes118.exe"

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe

"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=3720 --field-trial-handle=2252,i,16504368816373493055,9578615028378602855,262144 --variations-seed-version /prefetch:8

Network

Country Destination Domain Proto
US 8.8.8.8:53 138.107.17.2.in-addr.arpa udp
US 8.8.8.8:53 183.142.211.20.in-addr.arpa udp
US 8.8.8.8:53 4.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
US 13.107.253.64:443 tcp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
US 8.8.8.8:53 150.1.37.23.in-addr.arpa udp
US 8.8.8.8:53 79.121.231.20.in-addr.arpa udp
US 8.8.8.8:53 18.125.209.23.in-addr.arpa udp
US 8.8.8.8:53 203.107.17.2.in-addr.arpa udp
US 8.8.8.8:53 23.236.111.52.in-addr.arpa udp
US 8.8.8.8:53 144.107.17.2.in-addr.arpa udp
US 8.8.8.8:53 213.143.182.52.in-addr.arpa udp

Files

memory/4140-0-0x0000000000400000-0x000000000068D000-memory.dmp

memory/4140-1-0x0000000002480000-0x00000000024E0000-memory.dmp

memory/4140-2-0x0000000002640000-0x0000000002641000-memory.dmp

memory/4140-3-0x0000000002630000-0x0000000002631000-memory.dmp

memory/4140-4-0x00000000026A0000-0x00000000026A1000-memory.dmp

memory/4140-5-0x0000000002660000-0x0000000002661000-memory.dmp

memory/4140-6-0x0000000002620000-0x0000000002621000-memory.dmp

memory/4140-7-0x00000000026B0000-0x00000000026B1000-memory.dmp

memory/4140-8-0x0000000000400000-0x000000000068D000-memory.dmp

memory/4140-10-0x0000000002480000-0x00000000024E0000-memory.dmp