darkcomet | 23366d492ab98da6b7b25b5a60a4fc9d8d3486f96316808f15fc977328763825

Analysis

max time kernel
150s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
15/09/2024, 16:47

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General

Target
e2f17603dc2119b2a7a8f9fa1819906b_JaffaCakes118.exe
Size 725KB
Sample240915-vaycbstfmr
SHA256 23366d492ab98da6b7b25b5a60a4fc9d8d3486f96316808f15fc977328763825
MD5 e2f17603dc2119b2a7a8f9fa1819906b
SHA1 3a825763dc8aefa69299d3da43ba39721627b48a
SHA512 53510b0756070646a8fc631fd3a503c7b8f5cc6e72aaf267ec6e7fe61cfcfa7971260612dc646e57394152f8e17f9fbb5fd5ab5a3080ac3f629cabac49291365
SSDEEP 12288:E9HMeUmcufrvA3kb445UEJ2jsWiD4EvFuu4cNgZhCiZKD/XdyFI:IiBIGkbxqEcjsWiDxguehC2SP
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

darkcomet guest16 discovery evasion persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

necto.ddns.net:1604

Mutex

DC_MUTEX-CJKVGFA

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
aFl3qpoVn9g0
install
true
offline_keylogger
true
persistence
false
reg_key
svchost

Signatures

Darkcomet
DarkComet is a remote access trojan (RAT) developed by Jean-Pierre Lesueur.
trojan rat darkcomet

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Users\\Admin\\AppData\\Local\\Temp\\MSDCSC\\msdcsc.exe"	e2f17603dc2119b2a7a8f9fa1819906b_JaffaCakes118.exe

Modifies firewall policy service 3 TTPs 3 IoCs

evasion

Modify Registry

T1112

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

description	ioc	Process
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile	msdcsc.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\EnableFirewall = "0"	msdcsc.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DisableNotifications = "0"	msdcsc.exe

Sets file to hidden 1 TTPs 2 IoCs

Modifies file attributes to stop it showing in Explorer etc.

evasion

Hidden Files and Directories

T1564.001

pid	Process
4852	attrib.exe
1708	attrib.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1302416131-1437503476-2806442725-1000\Control Panel\International\Geo\Nation	e2f17603dc2119b2a7a8f9fa1819906b_JaffaCakes118.exe

Executes dropped EXE 1 IoCs

pid	Process
1388	msdcsc.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1302416131-1437503476-2806442725-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\svchost = "C:\\Users\\Admin\\AppData\\Local\\Temp\\MSDCSC\\msdcsc.exe"	e2f17603dc2119b2a7a8f9fa1819906b_JaffaCakes118.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 7 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	msdcsc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	notepad.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	e2f17603dc2119b2a7a8f9fa1819906b_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	attrib.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	attrib.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	e2f17603dc2119b2a7a8f9fa1819906b_JaffaCakes118.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1388	msdcsc.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	3664	e2f17603dc2119b2a7a8f9fa1819906b_JaffaCakes118.exe
Token: SeSecurityPrivilege	3664	e2f17603dc2119b2a7a8f9fa1819906b_JaffaCakes118.exe
Token: SeTakeOwnershipPrivilege	3664	e2f17603dc2119b2a7a8f9fa1819906b_JaffaCakes118.exe
Token: SeLoadDriverPrivilege	3664	e2f17603dc2119b2a7a8f9fa1819906b_JaffaCakes118.exe
Token: SeSystemProfilePrivilege	3664	e2f17603dc2119b2a7a8f9fa1819906b_JaffaCakes118.exe
Token: SeSystemtimePrivilege	3664	e2f17603dc2119b2a7a8f9fa1819906b_JaffaCakes118.exe
Token: SeProfSingleProcessPrivilege	3664	e2f17603dc2119b2a7a8f9fa1819906b_JaffaCakes118.exe
Token: SeIncBasePriorityPrivilege	3664	e2f17603dc2119b2a7a8f9fa1819906b_JaffaCakes118.exe
Token: SeCreatePagefilePrivilege	3664	e2f17603dc2119b2a7a8f9fa1819906b_JaffaCakes118.exe
Token: SeBackupPrivilege	3664	e2f17603dc2119b2a7a8f9fa1819906b_JaffaCakes118.exe
Token: SeRestorePrivilege	3664	e2f17603dc2119b2a7a8f9fa1819906b_JaffaCakes118.exe
Token: SeShutdownPrivilege	3664	e2f17603dc2119b2a7a8f9fa1819906b_JaffaCakes118.exe
Token: SeDebugPrivilege	3664	e2f17603dc2119b2a7a8f9fa1819906b_JaffaCakes118.exe
Token: SeSystemEnvironmentPrivilege	3664	e2f17603dc2119b2a7a8f9fa1819906b_JaffaCakes118.exe
Token: SeChangeNotifyPrivilege	3664	e2f17603dc2119b2a7a8f9fa1819906b_JaffaCakes118.exe
Token: SeRemoteShutdownPrivilege	3664	e2f17603dc2119b2a7a8f9fa1819906b_JaffaCakes118.exe
Token: SeUndockPrivilege	3664	e2f17603dc2119b2a7a8f9fa1819906b_JaffaCakes118.exe
Token: SeManageVolumePrivilege	3664	e2f17603dc2119b2a7a8f9fa1819906b_JaffaCakes118.exe
Token: SeImpersonatePrivilege	3664	e2f17603dc2119b2a7a8f9fa1819906b_JaffaCakes118.exe
Token: SeCreateGlobalPrivilege	3664	e2f17603dc2119b2a7a8f9fa1819906b_JaffaCakes118.exe
Token: 33	3664	e2f17603dc2119b2a7a8f9fa1819906b_JaffaCakes118.exe
Token: 34	3664	e2f17603dc2119b2a7a8f9fa1819906b_JaffaCakes118.exe
Token: 35	3664	e2f17603dc2119b2a7a8f9fa1819906b_JaffaCakes118.exe
Token: 36	3664	e2f17603dc2119b2a7a8f9fa1819906b_JaffaCakes118.exe
Token: SeIncreaseQuotaPrivilege	1388	msdcsc.exe
Token: SeSecurityPrivilege	1388	msdcsc.exe
Token: SeTakeOwnershipPrivilege	1388	msdcsc.exe
Token: SeLoadDriverPrivilege	1388	msdcsc.exe
Token: SeSystemProfilePrivilege	1388	msdcsc.exe
Token: SeSystemtimePrivilege	1388	msdcsc.exe
Token: SeProfSingleProcessPrivilege	1388	msdcsc.exe
Token: SeIncBasePriorityPrivilege	1388	msdcsc.exe
Token: SeCreatePagefilePrivilege	1388	msdcsc.exe
Token: SeBackupPrivilege	1388	msdcsc.exe
Token: SeRestorePrivilege	1388	msdcsc.exe
Token: SeShutdownPrivilege	1388	msdcsc.exe
Token: SeDebugPrivilege	1388	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	1388	msdcsc.exe
Token: SeChangeNotifyPrivilege	1388	msdcsc.exe
Token: SeRemoteShutdownPrivilege	1388	msdcsc.exe
Token: SeUndockPrivilege	1388	msdcsc.exe
Token: SeManageVolumePrivilege	1388	msdcsc.exe
Token: SeImpersonatePrivilege	1388	msdcsc.exe
Token: SeCreateGlobalPrivilege	1388	msdcsc.exe
Token: 33	1388	msdcsc.exe
Token: 34	1388	msdcsc.exe
Token: 35	1388	msdcsc.exe
Token: 36	1388	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1388	msdcsc.exe

Suspicious use of WriteProcessMemory 37 IoCs

description	pid	Process	procid_target
PID 3664 wrote to memory of 4304	3664	e2f17603dc2119b2a7a8f9fa1819906b_JaffaCakes118.exe	82
PID 3664 wrote to memory of 4304	3664	e2f17603dc2119b2a7a8f9fa1819906b_JaffaCakes118.exe	82
PID 3664 wrote to memory of 4304	3664	e2f17603dc2119b2a7a8f9fa1819906b_JaffaCakes118.exe	82
PID 3664 wrote to memory of 3200	3664	e2f17603dc2119b2a7a8f9fa1819906b_JaffaCakes118.exe	83
PID 3664 wrote to memory of 3200	3664	e2f17603dc2119b2a7a8f9fa1819906b_JaffaCakes118.exe	83
PID 3664 wrote to memory of 3200	3664	e2f17603dc2119b2a7a8f9fa1819906b_JaffaCakes118.exe	83
PID 4304 wrote to memory of 1708	4304	cmd.exe	86
PID 4304 wrote to memory of 1708	4304	cmd.exe	86
PID 4304 wrote to memory of 1708	4304	cmd.exe	86
PID 3200 wrote to memory of 4852	3200	cmd.exe	87
PID 3200 wrote to memory of 4852	3200	cmd.exe	87
PID 3200 wrote to memory of 4852	3200	cmd.exe	87
PID 3664 wrote to memory of 1388	3664	e2f17603dc2119b2a7a8f9fa1819906b_JaffaCakes118.exe	88
PID 3664 wrote to memory of 1388	3664	e2f17603dc2119b2a7a8f9fa1819906b_JaffaCakes118.exe	88
PID 3664 wrote to memory of 1388	3664	e2f17603dc2119b2a7a8f9fa1819906b_JaffaCakes118.exe	88
PID 1388 wrote to memory of 1704	1388	msdcsc.exe	89
PID 1388 wrote to memory of 1704	1388	msdcsc.exe	89
PID 1388 wrote to memory of 1704	1388	msdcsc.exe	89
PID 1388 wrote to memory of 1704	1388	msdcsc.exe	89
PID 1388 wrote to memory of 1704	1388	msdcsc.exe	89
PID 1388 wrote to memory of 1704	1388	msdcsc.exe	89
PID 1388 wrote to memory of 1704	1388	msdcsc.exe	89
PID 1388 wrote to memory of 1704	1388	msdcsc.exe	89
PID 1388 wrote to memory of 1704	1388	msdcsc.exe	89
PID 1388 wrote to memory of 1704	1388	msdcsc.exe	89
PID 1388 wrote to memory of 1704	1388	msdcsc.exe	89
PID 1388 wrote to memory of 1704	1388	msdcsc.exe	89
PID 1388 wrote to memory of 1704	1388	msdcsc.exe	89
PID 1388 wrote to memory of 1704	1388	msdcsc.exe	89
PID 1388 wrote to memory of 1704	1388	msdcsc.exe	89
PID 1388 wrote to memory of 1704	1388	msdcsc.exe	89
PID 1388 wrote to memory of 1704	1388	msdcsc.exe	89
PID 1388 wrote to memory of 1704	1388	msdcsc.exe	89
PID 1388 wrote to memory of 1704	1388	msdcsc.exe	89
PID 1388 wrote to memory of 1704	1388	msdcsc.exe	89
PID 1388 wrote to memory of 1704	1388	msdcsc.exe	89
PID 1388 wrote to memory of 1704	1388	msdcsc.exe	89

Views/modifies file attributes 1 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
4852	attrib.exe
1708	attrib.exe

C:\Users\Admin\AppData\Local\Temp\e2f17603dc2119b2a7a8f9fa1819906b_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\e2f17603dc2119b2a7a8f9fa1819906b_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3664
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\e2f17603dc2119b2a7a8f9fa1819906b_JaffaCakes118.exe" +s +h
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4304
- - C:\Windows\SysWOW64\attrib.exe
    attrib "C:\Users\Admin\AppData\Local\Temp\e2f17603dc2119b2a7a8f9fa1819906b_JaffaCakes118.exe" +s +h
    3⤵
    - Sets file to hidden
    - System Location Discovery: System Language Discovery
    - Views/modifies file attributes
    PID:1708
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3200
- - C:\Windows\SysWOW64\attrib.exe
    attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
    3⤵
    - Sets file to hidden
    - System Location Discovery: System Language Discovery
    - Views/modifies file attributes
    PID:4852
- C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
  "C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe"
  2⤵
  - Modifies firewall policy service
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1388
- - C:\Windows\SysWOW64\notepad.exe
    notepad
    3⤵
    - System Location Discovery: System Language Discovery
    PID:1704

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Create or Modify System Process

T1543

Windows Service

T1543.003

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Create or Modify System Process

T1543

Windows Service

T1543.003

Defense Evasion

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

Impair Defenses

T1562

Disable or Modify System Firewall

T1562.004

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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msdcsc.exe

Path C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
Size 725KB
SHA256 23366d492ab98da6b7b25b5a60a4fc9d8d3486f96316808f15fc977328763825
MD5 e2f17603dc2119b2a7a8f9fa1819906b
SHA1 3a825763dc8aefa69299d3da43ba39721627b48a
SHA512 53510b0756070646a8fc631fd3a503c7b8f5cc6e72aaf267ec6e7fe61cfcfa7971260612dc646e57394152f8e17f9fbb5fd5ab5a3080ac3f629cabac49291365
SSDEEP 12288:E9HMeUmcufrvA3kb445UEJ2jsWiD4EvFuu4cNgZhCiZKD/XdyFI:IiBIGkbxqEcjsWiDxguehC2SP
MD5 SHA1 SHA512 SSDEEP

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memory/1388-69-0x0000000000400000-0x00000000004C2000-memory.dmp

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memory/1388-70-0x0000000000400000-0x00000000004C2000-memory.dmp

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memory/1388-78-0x0000000000400000-0x00000000004C2000-memory.dmp

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memory/1388-77-0x0000000000400000-0x00000000004C2000-memory.dmp

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memory/1388-64-0x00000000023D0000-0x00000000023D1000-memory.dmp

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memory/1388-65-0x0000000000400000-0x00000000004C2000-memory.dmp

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memory/1388-66-0x0000000000400000-0x00000000004C2000-memory.dmp

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memory/1388-67-0x0000000000400000-0x00000000004C2000-memory.dmp

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memory/1388-61-0x00000000023D0000-0x00000000023D1000-memory.dmp

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memory/1388-68-0x0000000000400000-0x00000000004C2000-memory.dmp

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memory/1388-76-0x0000000000400000-0x00000000004C2000-memory.dmp

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memory/1388-71-0x0000000000400000-0x00000000004C2000-memory.dmp

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memory/1388-72-0x0000000000400000-0x00000000004C2000-memory.dmp

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memory/1388-73-0x0000000000400000-0x00000000004C2000-memory.dmp

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memory/1388-74-0x0000000000400000-0x00000000004C2000-memory.dmp

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memory/1388-75-0x0000000000400000-0x00000000004C2000-memory.dmp

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memory/1704-62-0x00000000013D0000-0x00000000013D1000-memory.dmp

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memory/3664-63-0x0000000000400000-0x00000000004C2000-memory.dmp

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memory/3664-0-0x0000000002280000-0x0000000002281000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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