darkcomet | c3cb482354de39729819493ab1f9c369d51be690f18dac97fe89bb2c2ed7bb49

Analysis

max time kernel
148s
max time network
142s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
17-10-2024 14:00

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General

Target

524ca2f4cdccb301b31c60c7fba9e3af_JaffaCakes118.exe
Size

500KB
MD5

524ca2f4cdccb301b31c60c7fba9e3af
SHA1

9789b76c29dcec00f922b531a3d40ea31f1954e9
SHA256

c3cb482354de39729819493ab1f9c369d51be690f18dac97fe89bb2c2ed7bb49
SHA512

cc7259ba7cfec9c5e7177f787619b459381fb1a98160dd6bd2cbe53f7b5f005b5b0bb9073131b8435879fba740468ef8552f8af26606f1e37dcddffbf628ef17
SSDEEP

12288:0RFj60lHJFHN5qA9PASqB6CSCR49913oDC:fSNgA91HRH913oDC

Score

10^/10

darkcomet discovery persistence rat trojan upx

Malware Config

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

Processes:

524ca2f4cdccb301b31c60c7fba9e3af_JaffaCakes118.exe

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Windupdt\\winupdate.exe"	524ca2f4cdccb301b31c60c7fba9e3af_JaffaCakes118.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

Processes:

524ca2f4cdccb301b31c60c7fba9e3af_JaffaCakes118.exewinupdate.exe

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	524ca2f4cdccb301b31c60c7fba9e3af_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	winupdate.exe

Executes dropped EXE 1 IoCs

Processes:

winupdate.exe

pid	Process
2600	winupdate.exe

Loads dropped DLL 4 IoCs

Processes:

524ca2f4cdccb301b31c60c7fba9e3af_JaffaCakes118.exewinupdate.exe

pid	Process
2008	524ca2f4cdccb301b31c60c7fba9e3af_JaffaCakes118.exe
2600	winupdate.exe
2600	winupdate.exe
2600	winupdate.exe

Molebox Virtualization software 3 IoCs

Detects file using Molebox Virtualization software.

Processes:

resource	yara_rule
behavioral1/memory/2008-2-0x0000000000400000-0x00000000004F2000-memory.dmp	molebox
behavioral1/files/0x0006000000018710-15.dat	molebox
behavioral1/memory/2600-26-0x0000000000400000-0x00000000004F2000-memory.dmp	molebox

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

524ca2f4cdccb301b31c60c7fba9e3af_JaffaCakes118.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Windupdt\\winupdate.exe"	524ca2f4cdccb301b31c60c7fba9e3af_JaffaCakes118.exe

UPX packed file 8 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

Processes:

resource	yara_rule
behavioral1/memory/2008-20-0x0000000000400000-0x00000000004F2000-memory.dmp	upx
behavioral1/memory/2600-27-0x0000000000400000-0x00000000004F2000-memory.dmp	upx
behavioral1/memory/2600-29-0x0000000000400000-0x00000000004F2000-memory.dmp	upx
behavioral1/memory/2600-31-0x0000000000400000-0x00000000004F2000-memory.dmp	upx
behavioral1/memory/2600-33-0x0000000000400000-0x00000000004F2000-memory.dmp	upx
behavioral1/memory/2600-35-0x0000000000400000-0x00000000004F2000-memory.dmp	upx
behavioral1/memory/2600-37-0x0000000000400000-0x00000000004F2000-memory.dmp	upx
behavioral1/memory/2600-40-0x0000000000400000-0x00000000004F2000-memory.dmp	upx

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 3 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

Processes:

winupdate.exe524ca2f4cdccb301b31c60c7fba9e3af_JaffaCakes118.exeDllHost.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winupdate.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	524ca2f4cdccb301b31c60c7fba9e3af_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	DllHost.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

Processes:

524ca2f4cdccb301b31c60c7fba9e3af_JaffaCakes118.exewinupdate.exe

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	524ca2f4cdccb301b31c60c7fba9e3af_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	524ca2f4cdccb301b31c60c7fba9e3af_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	winupdate.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	winupdate.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	winupdate.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	winupdate.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	524ca2f4cdccb301b31c60c7fba9e3af_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	524ca2f4cdccb301b31c60c7fba9e3af_JaffaCakes118.exe

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry

T1012

System Information Discovery

T1082

Processes:

524ca2f4cdccb301b31c60c7fba9e3af_JaffaCakes118.exewinupdate.exe

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	524ca2f4cdccb301b31c60c7fba9e3af_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	winupdate.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

winupdate.exe

pid	Process
2600	winupdate.exe

Suspicious use of AdjustPrivilegeToken 46 IoCs

Processes:

524ca2f4cdccb301b31c60c7fba9e3af_JaffaCakes118.exewinupdate.exe

description	pid	Process
Token: SeIncreaseQuotaPrivilege	2008	524ca2f4cdccb301b31c60c7fba9e3af_JaffaCakes118.exe
Token: SeSecurityPrivilege	2008	524ca2f4cdccb301b31c60c7fba9e3af_JaffaCakes118.exe
Token: SeTakeOwnershipPrivilege	2008	524ca2f4cdccb301b31c60c7fba9e3af_JaffaCakes118.exe
Token: SeLoadDriverPrivilege	2008	524ca2f4cdccb301b31c60c7fba9e3af_JaffaCakes118.exe
Token: SeSystemProfilePrivilege	2008	524ca2f4cdccb301b31c60c7fba9e3af_JaffaCakes118.exe
Token: SeSystemtimePrivilege	2008	524ca2f4cdccb301b31c60c7fba9e3af_JaffaCakes118.exe
Token: SeProfSingleProcessPrivilege	2008	524ca2f4cdccb301b31c60c7fba9e3af_JaffaCakes118.exe
Token: SeIncBasePriorityPrivilege	2008	524ca2f4cdccb301b31c60c7fba9e3af_JaffaCakes118.exe
Token: SeCreatePagefilePrivilege	2008	524ca2f4cdccb301b31c60c7fba9e3af_JaffaCakes118.exe
Token: SeBackupPrivilege	2008	524ca2f4cdccb301b31c60c7fba9e3af_JaffaCakes118.exe
Token: SeRestorePrivilege	2008	524ca2f4cdccb301b31c60c7fba9e3af_JaffaCakes118.exe
Token: SeShutdownPrivilege	2008	524ca2f4cdccb301b31c60c7fba9e3af_JaffaCakes118.exe
Token: SeDebugPrivilege	2008	524ca2f4cdccb301b31c60c7fba9e3af_JaffaCakes118.exe
Token: SeSystemEnvironmentPrivilege	2008	524ca2f4cdccb301b31c60c7fba9e3af_JaffaCakes118.exe
Token: SeChangeNotifyPrivilege	2008	524ca2f4cdccb301b31c60c7fba9e3af_JaffaCakes118.exe
Token: SeRemoteShutdownPrivilege	2008	524ca2f4cdccb301b31c60c7fba9e3af_JaffaCakes118.exe
Token: SeUndockPrivilege	2008	524ca2f4cdccb301b31c60c7fba9e3af_JaffaCakes118.exe
Token: SeManageVolumePrivilege	2008	524ca2f4cdccb301b31c60c7fba9e3af_JaffaCakes118.exe
Token: SeImpersonatePrivilege	2008	524ca2f4cdccb301b31c60c7fba9e3af_JaffaCakes118.exe
Token: SeCreateGlobalPrivilege	2008	524ca2f4cdccb301b31c60c7fba9e3af_JaffaCakes118.exe
Token: 33	2008	524ca2f4cdccb301b31c60c7fba9e3af_JaffaCakes118.exe
Token: 34	2008	524ca2f4cdccb301b31c60c7fba9e3af_JaffaCakes118.exe
Token: 35	2008	524ca2f4cdccb301b31c60c7fba9e3af_JaffaCakes118.exe
Token: SeIncreaseQuotaPrivilege	2600	winupdate.exe
Token: SeSecurityPrivilege	2600	winupdate.exe
Token: SeTakeOwnershipPrivilege	2600	winupdate.exe
Token: SeLoadDriverPrivilege	2600	winupdate.exe
Token: SeSystemProfilePrivilege	2600	winupdate.exe
Token: SeSystemtimePrivilege	2600	winupdate.exe
Token: SeProfSingleProcessPrivilege	2600	winupdate.exe
Token: SeIncBasePriorityPrivilege	2600	winupdate.exe
Token: SeCreatePagefilePrivilege	2600	winupdate.exe
Token: SeBackupPrivilege	2600	winupdate.exe
Token: SeRestorePrivilege	2600	winupdate.exe
Token: SeShutdownPrivilege	2600	winupdate.exe
Token: SeDebugPrivilege	2600	winupdate.exe
Token: SeSystemEnvironmentPrivilege	2600	winupdate.exe
Token: SeChangeNotifyPrivilege	2600	winupdate.exe
Token: SeRemoteShutdownPrivilege	2600	winupdate.exe
Token: SeUndockPrivilege	2600	winupdate.exe
Token: SeManageVolumePrivilege	2600	winupdate.exe
Token: SeImpersonatePrivilege	2600	winupdate.exe
Token: SeCreateGlobalPrivilege	2600	winupdate.exe
Token: 33	2600	winupdate.exe
Token: 34	2600	winupdate.exe
Token: 35	2600	winupdate.exe

Suspicious use of FindShellTrayWindow 1 IoCs

Processes:

DllHost.exe

pid	Process
2688	DllHost.exe

Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

winupdate.exeDllHost.exe

pid	Process
2600	winupdate.exe
2688	DllHost.exe
2688	DllHost.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

524ca2f4cdccb301b31c60c7fba9e3af_JaffaCakes118.exe

description	pid	Process	procid_target
PID 2008 wrote to memory of 2600	2008	524ca2f4cdccb301b31c60c7fba9e3af_JaffaCakes118.exe	32
PID 2008 wrote to memory of 2600	2008	524ca2f4cdccb301b31c60c7fba9e3af_JaffaCakes118.exe	32
PID 2008 wrote to memory of 2600	2008	524ca2f4cdccb301b31c60c7fba9e3af_JaffaCakes118.exe	32
PID 2008 wrote to memory of 2600	2008	524ca2f4cdccb301b31c60c7fba9e3af_JaffaCakes118.exe	32
PID 2008 wrote to memory of 2600	2008	524ca2f4cdccb301b31c60c7fba9e3af_JaffaCakes118.exe	32
PID 2008 wrote to memory of 2600	2008	524ca2f4cdccb301b31c60c7fba9e3af_JaffaCakes118.exe	32
PID 2008 wrote to memory of 2600	2008	524ca2f4cdccb301b31c60c7fba9e3af_JaffaCakes118.exe	32

C:\Users\Admin\AppData\Local\Temp\524ca2f4cdccb301b31c60c7fba9e3af_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\524ca2f4cdccb301b31c60c7fba9e3af_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- Checks BIOS information in registry
- Loads dropped DLL
- Adds Run key to start application
- 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:2008
- C:\Windupdt\winupdate.exe
  "C:\Windupdt\winupdate.exe"
  2⤵
  - Checks BIOS information in registry
  - Executes dropped EXE
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Checks processor information in registry
  - Enumerates system info in registry
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:2600

C:\Windows\SysWOW64\DllHost.exe
C:\Windows\SysWOW64\DllHost.exe /Processid:{76D0CB12-7604-4048-B83C-1005C7DDC503}
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
PID:2688

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\TEEN-ITS-ME-VERRY-SEXY-GIRL-MSN-OR-CAM.JPG

Filesize
18KB

MD5
964da34a3838f71c5a67a87625f28aa8

SHA1
5df91d066cb58fd04680902c5b8411f0a3c2f6df

SHA256
d27cf604320b77dd9150691158551362d06eda7a581a233b57888dd1d2f9e0d4

SHA512
95a2d32c9f68097b2cc1be76f2199f4c0725ae2f22b52abff76ed25e8acd633a850bb5224d17b20cd6e72a06523465a04324ca6be22bd87401eed53437393f76

Download Submit
\Windupdt\winupdate.exe

Filesize
500KB

MD5
524ca2f4cdccb301b31c60c7fba9e3af

SHA1
9789b76c29dcec00f922b531a3d40ea31f1954e9

SHA256
c3cb482354de39729819493ab1f9c369d51be690f18dac97fe89bb2c2ed7bb49

SHA512
cc7259ba7cfec9c5e7177f787619b459381fb1a98160dd6bd2cbe53f7b5f005b5b0bb9073131b8435879fba740468ef8552f8af26606f1e37dcddffbf628ef17

Download Submit
memory/2008-3-0x00000000005C0000-0x00000000005D0000-memory.dmp

Filesize
64KB

Download
memory/2008-20-0x0000000000400000-0x00000000004F2000-memory.dmp

Filesize
968KB

Download
memory/2008-4-0x0000000077D90000-0x0000000077D91000-memory.dmp

Filesize
4KB

Download
memory/2008-1-0x0000000000270000-0x00000000002AD000-memory.dmp

Filesize
244KB

Download
memory/2008-6-0x00000000772B0000-0x00000000773C0000-memory.dmp

Filesize
1.1MB

Download
memory/2008-10-0x00000000020B0000-0x00000000020B2000-memory.dmp

Filesize
8KB

Download
memory/2008-5-0x00000000772C1000-0x00000000772C2000-memory.dmp

Filesize
4KB

Download
memory/2008-22-0x00000000772B0000-0x00000000773C0000-memory.dmp

Filesize
1.1MB

Download
memory/2008-2-0x0000000000400000-0x00000000004F2000-memory.dmp

Filesize
968KB

Download
memory/2008-0-0x0000000000250000-0x0000000000251000-memory.dmp

Filesize
4KB

Download
memory/2008-21-0x0000000000270000-0x00000000002AD000-memory.dmp

Filesize
244KB

Download
memory/2600-31-0x0000000000400000-0x00000000004F2000-memory.dmp

Filesize
968KB

Download
memory/2600-26-0x0000000000400000-0x00000000004F2000-memory.dmp

Filesize
968KB

Download
memory/2600-27-0x0000000000400000-0x00000000004F2000-memory.dmp

Filesize
968KB

Download
memory/2600-29-0x0000000000400000-0x00000000004F2000-memory.dmp

Filesize
968KB

Download
memory/2600-33-0x0000000000400000-0x00000000004F2000-memory.dmp

Filesize
968KB

Download
memory/2600-35-0x0000000000400000-0x00000000004F2000-memory.dmp

Filesize
968KB

Download
memory/2600-37-0x0000000000400000-0x00000000004F2000-memory.dmp

Filesize
968KB

Download
memory/2600-40-0x0000000000400000-0x00000000004F2000-memory.dmp

Filesize
968KB

Download
memory/2688-12-0x00000000772B0000-0x00000000773C0000-memory.dmp

Filesize
1.1MB

Download
memory/2688-11-0x0000000000160000-0x0000000000162000-memory.dmp

Filesize
8KB

Download