darkcomet | 3ca01a8c0bb55c92e88f57640dea04c8a8e6419721e1536bcc5a13947645c08b

Analysis

max time kernel
93s
max time network
147s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
16-12-2024 02:18

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

f6d672794b8b4c02f5c671407955aa24_JaffaCakes118.exe
Size

890KB
MD5

f6d672794b8b4c02f5c671407955aa24
SHA1

aa3261f54f574fd476129562af354f8c3631c59b
SHA256

3ca01a8c0bb55c92e88f57640dea04c8a8e6419721e1536bcc5a13947645c08b
SHA512

4a6eefcc4fd84bca4ad049d30b5c8edbfd7f6a1a3cef101c64afa3b7e06b1eeb06e0ad9468bf852a84898e66cd268d5b2da3f9270e846a513a8f6e3086f94d25
SSDEEP

12288:TNdxlP9OqtG9B+2jOXUrxfyllxjfsrZwv3VBmk4NLecPqVB1oxGSIrbdd+6tCSWU:TNdxGscqlTv3VArLyB1IGSK

Score

10^/10

darkcomet new test discovery evasion persistence rat trojan upx

Malware Config

Extracted

Family

darkcomet

Botnet

New Test

meteor63.no-ip.org:1604

Mutex

DC_MUTEX-XR5ADYH

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
GVYsL3brnVb8
install
true
offline_keylogger
false
password
12345
persistence
true
reg_key
explorer

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\\MSDCSC\\msdcsc.exe"	vbc.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
2924	attrib.exe
2720	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-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation	vbc.exe

Executes dropped EXE 4 IoCs

pid	Process
1720	vbc.exe
3992	vbc.exe
4444	vbc.exe
4772	msdcsc.exe

Uses the VBS compiler for execution 1 TTPs

Command and Scripting Interpreter
T1059

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-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\explorer = "C:\\Windows\\MSDCSC\\msdcsc.exe"	vbc.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 412 set thread context of 1720	412	f6d672794b8b4c02f5c671407955aa24_JaffaCakes118.exe	83
PID 1720 set thread context of 3992	1720	vbc.exe	84
PID 1720 set thread context of 4444	1720	vbc.exe	85

UPX packed file 7 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3992-14-0x0000000000400000-0x00000000004E8000-memory.dmp	upx
behavioral2/memory/3992-17-0x0000000000400000-0x00000000004E8000-memory.dmp	upx
behavioral2/memory/3992-18-0x0000000000400000-0x00000000004E8000-memory.dmp	upx
behavioral2/memory/3992-19-0x0000000000400000-0x00000000004E8000-memory.dmp	upx
behavioral2/memory/3992-21-0x0000000000400000-0x00000000004E8000-memory.dmp	upx
behavioral2/memory/3992-20-0x0000000000400000-0x00000000004E8000-memory.dmp	upx
behavioral2/memory/3992-92-0x0000000000400000-0x00000000004E8000-memory.dmp	upx

Drops file in Windows directory 3 IoCs

description	ioc	Process
File created	C:\Windows\MSDCSC\msdcsc.exe	vbc.exe
File opened for modification	C:\Windows\MSDCSC\msdcsc.exe	vbc.exe
File opened for modification	C:\Windows\MSDCSC\	vbc.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 9 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	vbc.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	f6d672794b8b4c02f5c671407955aa24_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vbc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vbc.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	msdcsc.exe

Modifies registry class 1 IoCs

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

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
412	f6d672794b8b4c02f5c671407955aa24_JaffaCakes118.exe

Suspicious use of AdjustPrivilegeToken 25 IoCs

description	pid	Process
Token: SeDebugPrivilege	412	f6d672794b8b4c02f5c671407955aa24_JaffaCakes118.exe
Token: SeIncreaseQuotaPrivilege	3992	vbc.exe
Token: SeSecurityPrivilege	3992	vbc.exe
Token: SeTakeOwnershipPrivilege	3992	vbc.exe
Token: SeLoadDriverPrivilege	3992	vbc.exe
Token: SeSystemProfilePrivilege	3992	vbc.exe
Token: SeSystemtimePrivilege	3992	vbc.exe
Token: SeProfSingleProcessPrivilege	3992	vbc.exe
Token: SeIncBasePriorityPrivilege	3992	vbc.exe
Token: SeCreatePagefilePrivilege	3992	vbc.exe
Token: SeBackupPrivilege	3992	vbc.exe
Token: SeRestorePrivilege	3992	vbc.exe
Token: SeShutdownPrivilege	3992	vbc.exe
Token: SeDebugPrivilege	3992	vbc.exe
Token: SeSystemEnvironmentPrivilege	3992	vbc.exe
Token: SeChangeNotifyPrivilege	3992	vbc.exe
Token: SeRemoteShutdownPrivilege	3992	vbc.exe
Token: SeUndockPrivilege	3992	vbc.exe
Token: SeManageVolumePrivilege	3992	vbc.exe
Token: SeImpersonatePrivilege	3992	vbc.exe
Token: SeCreateGlobalPrivilege	3992	vbc.exe
Token: 33	3992	vbc.exe
Token: 34	3992	vbc.exe
Token: 35	3992	vbc.exe
Token: 36	3992	vbc.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1720	vbc.exe
4444	vbc.exe

Suspicious use of WriteProcessMemory 39 IoCs

description	pid	Process	procid_target
PID 412 wrote to memory of 1720	412	f6d672794b8b4c02f5c671407955aa24_JaffaCakes118.exe	83
PID 412 wrote to memory of 1720	412	f6d672794b8b4c02f5c671407955aa24_JaffaCakes118.exe	83
PID 412 wrote to memory of 1720	412	f6d672794b8b4c02f5c671407955aa24_JaffaCakes118.exe	83
PID 412 wrote to memory of 1720	412	f6d672794b8b4c02f5c671407955aa24_JaffaCakes118.exe	83
PID 412 wrote to memory of 1720	412	f6d672794b8b4c02f5c671407955aa24_JaffaCakes118.exe	83
PID 412 wrote to memory of 1720	412	f6d672794b8b4c02f5c671407955aa24_JaffaCakes118.exe	83
PID 412 wrote to memory of 1720	412	f6d672794b8b4c02f5c671407955aa24_JaffaCakes118.exe	83
PID 412 wrote to memory of 1720	412	f6d672794b8b4c02f5c671407955aa24_JaffaCakes118.exe	83
PID 1720 wrote to memory of 3992	1720	vbc.exe	84
PID 1720 wrote to memory of 3992	1720	vbc.exe	84
PID 1720 wrote to memory of 3992	1720	vbc.exe	84
PID 1720 wrote to memory of 3992	1720	vbc.exe	84
PID 1720 wrote to memory of 3992	1720	vbc.exe	84
PID 1720 wrote to memory of 3992	1720	vbc.exe	84
PID 1720 wrote to memory of 3992	1720	vbc.exe	84
PID 1720 wrote to memory of 3992	1720	vbc.exe	84
PID 1720 wrote to memory of 4444	1720	vbc.exe	85
PID 1720 wrote to memory of 4444	1720	vbc.exe	85
PID 1720 wrote to memory of 4444	1720	vbc.exe	85
PID 1720 wrote to memory of 4444	1720	vbc.exe	85
PID 1720 wrote to memory of 4444	1720	vbc.exe	85
PID 1720 wrote to memory of 4444	1720	vbc.exe	85
PID 1720 wrote to memory of 4444	1720	vbc.exe	85
PID 1720 wrote to memory of 4444	1720	vbc.exe	85
PID 3992 wrote to memory of 2408	3992	vbc.exe	95
PID 3992 wrote to memory of 2408	3992	vbc.exe	95
PID 3992 wrote to memory of 2408	3992	vbc.exe	95
PID 3992 wrote to memory of 1644	3992	vbc.exe	96
PID 3992 wrote to memory of 1644	3992	vbc.exe	96
PID 3992 wrote to memory of 1644	3992	vbc.exe	96
PID 2408 wrote to memory of 2924	2408	cmd.exe	99
PID 2408 wrote to memory of 2924	2408	cmd.exe	99
PID 2408 wrote to memory of 2924	2408	cmd.exe	99
PID 1644 wrote to memory of 2720	1644	cmd.exe	100
PID 1644 wrote to memory of 2720	1644	cmd.exe	100
PID 1644 wrote to memory of 2720	1644	cmd.exe	100
PID 3992 wrote to memory of 4772	3992	vbc.exe	101
PID 3992 wrote to memory of 4772	3992	vbc.exe	101
PID 3992 wrote to memory of 4772	3992	vbc.exe	101

Views/modifies file attributes 1 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2924	attrib.exe
2720	attrib.exe

C:\Users\Admin\AppData\Local\Temp\f6d672794b8b4c02f5c671407955aa24_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f6d672794b8b4c02f5c671407955aa24_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:412
- C:\Users\Admin\AppData\Local\Temp\vbc.exe
  C:\Users\Admin\AppData\Local\Temp\vbc.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1720
- - C:\Users\Admin\AppData\Local\Temp\vbc.exe
    C:\Users\Admin\AppData\Local\Temp\vbc.exe
    3⤵
    - Modifies WinLogon for persistence
    - Checks computer location settings
    - Executes dropped EXE
    - Adds Run key to start application
    - Drops file in Windows directory
    - System Location Discovery: System Language Discovery
    - Modifies registry class
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:3992
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\vbc.exe" +s +h
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious use of WriteProcessMemory
      PID:2408
    - - C:\Windows\SysWOW64\attrib.exe
        
        attrib "C:\Users\Admin\AppData\Local\Temp\vbc.exe" +s +h
        5⤵
        Sets file to hidden
        System Location Discovery: System Language Discovery
        Views/modifies file attributes
        
        PID:2924
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious use of WriteProcessMemory
      PID:1644
    - - C:\Windows\SysWOW64\attrib.exe
        
        attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
        5⤵
        Sets file to hidden
        System Location Discovery: System Language Discovery
        Views/modifies file attributes
        
        PID:2720
  - - C:\Windows\MSDCSC\msdcsc.exe
      "C:\Windows\MSDCSC\msdcsc.exe"
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      PID:4772
- - C:\Users\Admin\AppData\Local\Temp\vbc.exe
    C:\Users\Admin\AppData\Local\Temp\vbc.exe
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    PID:4444

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

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

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

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\vbc.exe

Filesize
1.1MB

MD5
d881de17aa8f2e2c08cbb7b265f928f9

SHA1
08936aebc87decf0af6e8eada191062b5e65ac2a

SHA256
b3a37093609f9a20ad60b85a9fa9de2ba674cba9b5bd687729440c70ba619ca0

SHA512
5f23bfb1b8740247b36ed0ab741738c7d4c949736129e767213e321607d1ccd3e3a8428e4ba44bd28a275b5e3f6206285b1a522514b7ef7ea5e698d90a713d34

Download Submit
memory/412-0-0x00000000747C2000-0x00000000747C3000-memory.dmp

Filesize
4KB

Download
memory/412-1-0x00000000747C0000-0x0000000074D71000-memory.dmp

Filesize
5.7MB

Download
memory/412-2-0x00000000747C0000-0x0000000074D71000-memory.dmp

Filesize
5.7MB

Download
memory/412-11-0x00000000747C0000-0x0000000074D71000-memory.dmp

Filesize
5.7MB

Download
memory/1720-5-0x0000000000400000-0x0000000000474000-memory.dmp

Filesize
464KB

Download
memory/1720-10-0x0000000000400000-0x0000000000474000-memory.dmp

Filesize
464KB

Download
memory/1720-29-0x0000000000400000-0x0000000000474000-memory.dmp

Filesize
464KB

Download
memory/3992-17-0x0000000000400000-0x00000000004E8000-memory.dmp

Filesize
928KB

Download
memory/3992-18-0x0000000000400000-0x00000000004E8000-memory.dmp

Filesize
928KB

Download
memory/3992-19-0x0000000000400000-0x00000000004E8000-memory.dmp

Filesize
928KB

Download
memory/3992-21-0x0000000000400000-0x00000000004E8000-memory.dmp

Filesize
928KB

Download
memory/3992-20-0x0000000000400000-0x00000000004E8000-memory.dmp

Filesize
928KB

Download
memory/3992-14-0x0000000000400000-0x00000000004E8000-memory.dmp

Filesize
928KB

Download
memory/3992-92-0x0000000000400000-0x00000000004E8000-memory.dmp

Filesize
928KB

Download
memory/4444-24-0x0000000000400000-0x0000000000405000-memory.dmp

Filesize
20KB

Download
memory/4444-27-0x0000000000400000-0x0000000000405000-memory.dmp

Filesize
20KB

Download
memory/4444-32-0x0000000000400000-0x0000000000405000-memory.dmp

Filesize
20KB

Download