darkcomet | 34810247c2f70e3b67b6f489e302019f4627f7121224699d9d706a381f35a901

Analysis

max time kernel
149s
max time network
118s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
26/03/2025, 21:45

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

JaffaCakes118_8952a0354c933abffdddc34dd80daf8d.exe
Size

1.1MB
MD5

8952a0354c933abffdddc34dd80daf8d
SHA1

0cf34ff404e300827309a527482f044107c40916
SHA256

34810247c2f70e3b67b6f489e302019f4627f7121224699d9d706a381f35a901
SHA512

e358f80d6f32a59c7731954185ca0c34403c7be2510e090235a73358e3da123c9813163ffb23edea10eb4eb770f10312af66e38ea7b62c9c656c9171667ce49c
SSDEEP

24576:XLidt4+maLUXUvWCRR9418CAK9+LPt57FF583x:B+PLUkTE18BKoLt5mx

Score

10^/10

darkcomet guest16 discovery persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

atteonpro.no-ip.biz:1604

atteonpro.no-ip.biz:100

atteonpro.no-ip.biz:666

Mutex

DC_MUTEX-A6M0LN3

Attributes

InstallPath
MicrosoftXFI\MicrosoftXFI.exe
gencode
wbmfHQTtN7#U
install
true
offline_keylogger
true
persistence
true
reg_key
MicrosoftXFI

rc4.plain

Signatures

Darkcomet
DarkComet is a remote access trojan (RAT) developed by Jean-Pierre Lesueur.
trojan rat darkcomet
Darkcomet family
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:\\Windows\\system32\\MicrosoftXFI\\MicrosoftXFI.exe"	CryptedFile.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

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	CryptedFile.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	explorer.exe

Executes dropped EXE 1 IoCs

pid	Process
2704	CryptedFile.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-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicrosoftXFI = "C:\\Windows\\system32\\MicrosoftXFI\\MicrosoftXFI.exe"	CryptedFile.exe

Drops file in System32 directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\MicrosoftXFI\	CryptedFile.exe
File created	C:\Windows\SysWOW64\MicrosoftXFI\MicrosoftXFI.exe	CryptedFile.exe
File opened for modification	C:\Windows\SysWOW64\MicrosoftXFI\MicrosoftXFI.exe	CryptedFile.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2704 set thread context of 2768	2704	CryptedFile.exe	31

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 2 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	CryptedFile.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	explorer.exe

Checks processor information in registry 2 TTPs 8 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	CryptedFile.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	explorer.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	CryptedFile.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	CryptedFile.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	CryptedFile.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	explorer.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	explorer.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	explorer.exe

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	CryptedFile.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	explorer.exe

Suspicious use of AdjustPrivilegeToken 46 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	2704	CryptedFile.exe
Token: SeSecurityPrivilege	2704	CryptedFile.exe
Token: SeTakeOwnershipPrivilege	2704	CryptedFile.exe
Token: SeLoadDriverPrivilege	2704	CryptedFile.exe
Token: SeSystemProfilePrivilege	2704	CryptedFile.exe
Token: SeSystemtimePrivilege	2704	CryptedFile.exe
Token: SeProfSingleProcessPrivilege	2704	CryptedFile.exe
Token: SeIncBasePriorityPrivilege	2704	CryptedFile.exe
Token: SeCreatePagefilePrivilege	2704	CryptedFile.exe
Token: SeBackupPrivilege	2704	CryptedFile.exe
Token: SeRestorePrivilege	2704	CryptedFile.exe
Token: SeShutdownPrivilege	2704	CryptedFile.exe
Token: SeDebugPrivilege	2704	CryptedFile.exe
Token: SeSystemEnvironmentPrivilege	2704	CryptedFile.exe
Token: SeChangeNotifyPrivilege	2704	CryptedFile.exe
Token: SeRemoteShutdownPrivilege	2704	CryptedFile.exe
Token: SeUndockPrivilege	2704	CryptedFile.exe
Token: SeManageVolumePrivilege	2704	CryptedFile.exe
Token: SeImpersonatePrivilege	2704	CryptedFile.exe
Token: SeCreateGlobalPrivilege	2704	CryptedFile.exe
Token: 33	2704	CryptedFile.exe
Token: 34	2704	CryptedFile.exe
Token: 35	2704	CryptedFile.exe
Token: SeIncreaseQuotaPrivilege	2768	explorer.exe
Token: SeSecurityPrivilege	2768	explorer.exe
Token: SeTakeOwnershipPrivilege	2768	explorer.exe
Token: SeLoadDriverPrivilege	2768	explorer.exe
Token: SeSystemProfilePrivilege	2768	explorer.exe
Token: SeSystemtimePrivilege	2768	explorer.exe
Token: SeProfSingleProcessPrivilege	2768	explorer.exe
Token: SeIncBasePriorityPrivilege	2768	explorer.exe
Token: SeCreatePagefilePrivilege	2768	explorer.exe
Token: SeBackupPrivilege	2768	explorer.exe
Token: SeRestorePrivilege	2768	explorer.exe
Token: SeShutdownPrivilege	2768	explorer.exe
Token: SeDebugPrivilege	2768	explorer.exe
Token: SeSystemEnvironmentPrivilege	2768	explorer.exe
Token: SeChangeNotifyPrivilege	2768	explorer.exe
Token: SeRemoteShutdownPrivilege	2768	explorer.exe
Token: SeUndockPrivilege	2768	explorer.exe
Token: SeManageVolumePrivilege	2768	explorer.exe
Token: SeImpersonatePrivilege	2768	explorer.exe
Token: SeCreateGlobalPrivilege	2768	explorer.exe
Token: 33	2768	explorer.exe
Token: 34	2768	explorer.exe
Token: 35	2768	explorer.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2768	explorer.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 1072 wrote to memory of 2704	1072	JaffaCakes118_8952a0354c933abffdddc34dd80daf8d.exe	30
PID 1072 wrote to memory of 2704	1072	JaffaCakes118_8952a0354c933abffdddc34dd80daf8d.exe	30
PID 1072 wrote to memory of 2704	1072	JaffaCakes118_8952a0354c933abffdddc34dd80daf8d.exe	30
PID 1072 wrote to memory of 2704	1072	JaffaCakes118_8952a0354c933abffdddc34dd80daf8d.exe	30
PID 2704 wrote to memory of 2768	2704	CryptedFile.exe	31
PID 2704 wrote to memory of 2768	2704	CryptedFile.exe	31
PID 2704 wrote to memory of 2768	2704	CryptedFile.exe	31
PID 2704 wrote to memory of 2768	2704	CryptedFile.exe	31
PID 2704 wrote to memory of 2768	2704	CryptedFile.exe	31
PID 2704 wrote to memory of 2768	2704	CryptedFile.exe	31

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8952a0354c933abffdddc34dd80daf8d.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8952a0354c933abffdddc34dd80daf8d.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1072
- C:\Users\Admin\AppData\Local\Temp\CryptedFile.exe
  "C:\Users\Admin\AppData\Local\Temp\CryptedFile.exe"
  2⤵
  - Modifies WinLogon for persistence
  - Checks BIOS information in registry
  - Executes dropped EXE
  - Adds Run key to start application
  - Drops file in System32 directory
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Checks processor information in registry
  - Enumerates system info in registry
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2704
- - C:\Windows\SysWOW64\explorer.exe
    "C:\Windows\SysWOW64\explorer.exe"
    3⤵
    - Checks BIOS information in registry
    - System Location Discovery: System Language Discovery
    - Checks processor information in registry
    - Enumerates system info in registry
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:2768

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

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Defense Evasion

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

Replay Monitor

Loading Replay Monitor...

Downloads

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

Filesize
733KB

MD5
323255efd6129e1af0d40dfe56a0dc95

SHA1
39fd58db7e37d2b999990466f0807672fd5b3d26

SHA256
2213590e5fa08bfabe324866dafcbf8569790c61b71a12ee2820690ce5743213

SHA512
e61d6efce33659d29d67a912b290b93d60dc8d1c8cfd4d44584d1cdedbcaac871d038f2ee2ddbfabb25af1329e7a6403ef65c919b8840840ac63d7da9e00fd80

Download Submit
memory/1072-0-0x000007FEF5BAE000-0x000007FEF5BAF000-memory.dmp

Filesize
4KB

Download
memory/1072-1-0x000007FEF58F0000-0x000007FEF628D000-memory.dmp

Filesize
9.6MB

Download
memory/1072-2-0x000007FEF58F0000-0x000007FEF628D000-memory.dmp

Filesize
9.6MB

Download
memory/1072-3-0x000007FEF58F0000-0x000007FEF628D000-memory.dmp

Filesize
9.6MB

Download
memory/1072-11-0x000007FEF58F0000-0x000007FEF628D000-memory.dmp

Filesize
9.6MB

Download
memory/2704-12-0x00000000003E0000-0x00000000003E1000-memory.dmp

Filesize
4KB

Download
memory/2704-24-0x0000000000400000-0x00000000004C8000-memory.dmp

Filesize
800KB

Download
memory/2768-27-0x0000000000400000-0x00000000004C8000-memory.dmp

Filesize
800KB

Download
memory/2768-28-0x0000000000400000-0x00000000004C8000-memory.dmp

Filesize
800KB

Download
memory/2768-29-0x0000000000400000-0x00000000004C8000-memory.dmp

Filesize
800KB

Download
memory/2768-26-0x0000000000400000-0x00000000004C8000-memory.dmp

Filesize
800KB

Download
memory/2768-25-0x0000000000400000-0x00000000004C8000-memory.dmp

Filesize
800KB

Download
memory/2768-30-0x0000000000400000-0x00000000004C8000-memory.dmp

Filesize
800KB

Download
memory/2768-23-0x0000000000400000-0x00000000004C8000-memory.dmp

Filesize
800KB

Download
memory/2768-22-0x0000000000400000-0x00000000004C8000-memory.dmp

Filesize
800KB

Download
memory/2768-21-0x0000000000400000-0x00000000004C8000-memory.dmp

Filesize
800KB

Download
memory/2768-19-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2768-17-0x0000000000400000-0x00000000004C8000-memory.dmp

Filesize
800KB

Download
memory/2768-31-0x0000000000400000-0x00000000004C8000-memory.dmp

Filesize
800KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads