darkcomet | 729ed839a7e876e8729b40e94da4193a9a1600387771f89adff0fdf23959e5eb

Analysis

max time kernel
120s
max time network
118s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
07-12-2024 23:01

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General

Target

729ed839a7e876e8729b40e94da4193a9a1600387771f89adff0fdf23959e5ebN.exe
Size

2.0MB
MD5

dd03ae443c895e8ce439b1470c3bc050
SHA1

559163d693bb56d225d9dbd96a8abe8adad25193
SHA256

729ed839a7e876e8729b40e94da4193a9a1600387771f89adff0fdf23959e5eb
SHA512

f7548c524118ede20be11c294359d1919675a3dac04757d21ef7590b1ebe9d85c8161bb130b0ff168be4e64f1118fe7375f840d0c01d22908f0760e28942da47
SSDEEP

49152:9USaVTmnMWlSMichIn/Ex3Z13vD1YYYYYYYYYYYYYYYBO:9USaVinXkca/Exp1fDr

Score

10^/10

darkcomet guest17 discovery evasion persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest17

targetyou.no-ip.org:57847

Mutex

DC_MUTEX-8RJ9SX1

Attributes

gencode
KFM4M3Ap5ZPh
install
false
offline_keylogger
false
persistence
false

Signatures

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

Modifies security service 2 TTPs 1 IoCs

evasion

Modify Registry

T1112

Windows Service

T1543.003

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\wscsvc\Start = "4"	vbc.exe

Windows security bypass 2 TTPs 2 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	vbc.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	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
624	attrib.exe
2616	attrib.exe

Checks computer location settings 2 TTPs 2 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-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation	vbc.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation	vbc.exe

Executes dropped EXE 3 IoCs

pid	Process
3668	vbc.exe
3628	NEWFUD.EXE
4916	vbc.exe

Uses the VBS compiler for execution 1 TTPs

Command and Scripting Interpreter
T1059

Windows security modification 2 TTPs 2 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	vbc.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	vbc.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\JavaUpdater = "C:\\Users\\Admin\\AppData\\Roaming\\JavaUpdater\\729ed839a7e876e8729b40e94da4193a9a1600387771f89adff0fdf23959e5ebN.exe"	729ed839a7e876e8729b40e94da4193a9a1600387771f89adff0fdf23959e5ebN.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\JavaUpdater = "C:\\Users\\Admin\\AppData\\Roaming\\JavaUpdater\\NEWFUD.EXE"	NEWFUD.EXE

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4552 set thread context of 3668	4552	729ed839a7e876e8729b40e94da4193a9a1600387771f89adff0fdf23959e5ebN.exe	83
PID 3628 set thread context of 4916	3628	NEWFUD.EXE	85

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	729ed839a7e876e8729b40e94da4193a9a1600387771f89adff0fdf23959e5ebN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vbc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	notepad.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	vbc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	NEWFUD.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	attrib.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
4916	vbc.exe

Suspicious use of AdjustPrivilegeToken 24 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	4916	vbc.exe
Token: SeSecurityPrivilege	4916	vbc.exe
Token: SeTakeOwnershipPrivilege	4916	vbc.exe
Token: SeLoadDriverPrivilege	4916	vbc.exe
Token: SeSystemProfilePrivilege	4916	vbc.exe
Token: SeSystemtimePrivilege	4916	vbc.exe
Token: SeProfSingleProcessPrivilege	4916	vbc.exe
Token: SeIncBasePriorityPrivilege	4916	vbc.exe
Token: SeCreatePagefilePrivilege	4916	vbc.exe
Token: SeBackupPrivilege	4916	vbc.exe
Token: SeRestorePrivilege	4916	vbc.exe
Token: SeShutdownPrivilege	4916	vbc.exe
Token: SeDebugPrivilege	4916	vbc.exe
Token: SeSystemEnvironmentPrivilege	4916	vbc.exe
Token: SeChangeNotifyPrivilege	4916	vbc.exe
Token: SeRemoteShutdownPrivilege	4916	vbc.exe
Token: SeUndockPrivilege	4916	vbc.exe
Token: SeManageVolumePrivilege	4916	vbc.exe
Token: SeImpersonatePrivilege	4916	vbc.exe
Token: SeCreateGlobalPrivilege	4916	vbc.exe
Token: 33	4916	vbc.exe
Token: 34	4916	vbc.exe
Token: 35	4916	vbc.exe
Token: 36	4916	vbc.exe

Suspicious use of WriteProcessMemory 61 IoCs

description	pid	Process	procid_target
PID 4552 wrote to memory of 3668	4552	729ed839a7e876e8729b40e94da4193a9a1600387771f89adff0fdf23959e5ebN.exe	83
PID 4552 wrote to memory of 3668	4552	729ed839a7e876e8729b40e94da4193a9a1600387771f89adff0fdf23959e5ebN.exe	83
PID 4552 wrote to memory of 3668	4552	729ed839a7e876e8729b40e94da4193a9a1600387771f89adff0fdf23959e5ebN.exe	83
PID 4552 wrote to memory of 3668	4552	729ed839a7e876e8729b40e94da4193a9a1600387771f89adff0fdf23959e5ebN.exe	83
PID 4552 wrote to memory of 3668	4552	729ed839a7e876e8729b40e94da4193a9a1600387771f89adff0fdf23959e5ebN.exe	83
PID 4552 wrote to memory of 3668	4552	729ed839a7e876e8729b40e94da4193a9a1600387771f89adff0fdf23959e5ebN.exe	83
PID 4552 wrote to memory of 3668	4552	729ed839a7e876e8729b40e94da4193a9a1600387771f89adff0fdf23959e5ebN.exe	83
PID 4552 wrote to memory of 3668	4552	729ed839a7e876e8729b40e94da4193a9a1600387771f89adff0fdf23959e5ebN.exe	83
PID 4552 wrote to memory of 3668	4552	729ed839a7e876e8729b40e94da4193a9a1600387771f89adff0fdf23959e5ebN.exe	83
PID 4552 wrote to memory of 3668	4552	729ed839a7e876e8729b40e94da4193a9a1600387771f89adff0fdf23959e5ebN.exe	83
PID 3668 wrote to memory of 3628	3668	vbc.exe	84
PID 3668 wrote to memory of 3628	3668	vbc.exe	84
PID 3668 wrote to memory of 3628	3668	vbc.exe	84
PID 3628 wrote to memory of 4916	3628	NEWFUD.EXE	85
PID 3628 wrote to memory of 4916	3628	NEWFUD.EXE	85
PID 3628 wrote to memory of 4916	3628	NEWFUD.EXE	85
PID 3628 wrote to memory of 4916	3628	NEWFUD.EXE	85
PID 3628 wrote to memory of 4916	3628	NEWFUD.EXE	85
PID 3628 wrote to memory of 4916	3628	NEWFUD.EXE	85
PID 3628 wrote to memory of 4916	3628	NEWFUD.EXE	85
PID 3628 wrote to memory of 4916	3628	NEWFUD.EXE	85
PID 3628 wrote to memory of 4916	3628	NEWFUD.EXE	85
PID 3628 wrote to memory of 4916	3628	NEWFUD.EXE	85
PID 3628 wrote to memory of 4916	3628	NEWFUD.EXE	85
PID 3628 wrote to memory of 4916	3628	NEWFUD.EXE	85
PID 3628 wrote to memory of 4916	3628	NEWFUD.EXE	85
PID 3628 wrote to memory of 4916	3628	NEWFUD.EXE	85
PID 4916 wrote to memory of 3940	4916	vbc.exe	86
PID 4916 wrote to memory of 3940	4916	vbc.exe	86
PID 4916 wrote to memory of 3940	4916	vbc.exe	86
PID 4916 wrote to memory of 2248	4916	vbc.exe	87
PID 4916 wrote to memory of 2248	4916	vbc.exe	87
PID 4916 wrote to memory of 2248	4916	vbc.exe	87
PID 4916 wrote to memory of 3780	4916	vbc.exe	88
PID 4916 wrote to memory of 3780	4916	vbc.exe	88
PID 4916 wrote to memory of 3780	4916	vbc.exe	88
PID 4916 wrote to memory of 3780	4916	vbc.exe	88
PID 4916 wrote to memory of 3780	4916	vbc.exe	88
PID 4916 wrote to memory of 3780	4916	vbc.exe	88
PID 4916 wrote to memory of 3780	4916	vbc.exe	88
PID 4916 wrote to memory of 3780	4916	vbc.exe	88
PID 4916 wrote to memory of 3780	4916	vbc.exe	88
PID 4916 wrote to memory of 3780	4916	vbc.exe	88
PID 4916 wrote to memory of 3780	4916	vbc.exe	88
PID 4916 wrote to memory of 3780	4916	vbc.exe	88
PID 4916 wrote to memory of 3780	4916	vbc.exe	88
PID 4916 wrote to memory of 3780	4916	vbc.exe	88
PID 4916 wrote to memory of 3780	4916	vbc.exe	88
PID 4916 wrote to memory of 3780	4916	vbc.exe	88
PID 4916 wrote to memory of 3780	4916	vbc.exe	88
PID 4916 wrote to memory of 3780	4916	vbc.exe	88
PID 4916 wrote to memory of 3780	4916	vbc.exe	88
PID 4916 wrote to memory of 3780	4916	vbc.exe	88
PID 4916 wrote to memory of 3780	4916	vbc.exe	88
PID 4916 wrote to memory of 3780	4916	vbc.exe	88
PID 3940 wrote to memory of 2616	3940	cmd.exe	91
PID 3940 wrote to memory of 2616	3940	cmd.exe	91
PID 3940 wrote to memory of 2616	3940	cmd.exe	91
PID 2248 wrote to memory of 624	2248	cmd.exe	92
PID 2248 wrote to memory of 624	2248	cmd.exe	92
PID 2248 wrote to memory of 624	2248	cmd.exe	92

System policy modification 1 TTPs 3 IoCs

evasion

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\CurrentVersion	vbc.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\CurrentVersion\Explorern	vbc.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\CurrentVersion\Explorern\NoControlPanel = "1"	vbc.exe

Views/modifies file attributes 1 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
624	attrib.exe
2616	attrib.exe

C:\Users\Admin\AppData\Local\Temp\729ed839a7e876e8729b40e94da4193a9a1600387771f89adff0fdf23959e5ebN.exe
"C:\Users\Admin\AppData\Local\Temp\729ed839a7e876e8729b40e94da4193a9a1600387771f89adff0fdf23959e5ebN.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4552
- C:\Users\Admin\AppData\Local\Temp\vbc.exe
  C:\Users\Admin\AppData\Local\Temp\vbc.exe
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3668
- - C:\Users\Admin\AppData\Local\Temp\NEWFUD.EXE
    "C:\Users\Admin\AppData\Local\Temp\NEWFUD.EXE"
    3⤵
    - Executes dropped EXE
    - Adds Run key to start application
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:3628
  - - C:\Users\Admin\AppData\Local\Temp\vbc.exe
      C:\Users\Admin\AppData\Local\Temp\vbc.exe
      4⤵
      Modifies security service
      Windows security bypass
      Checks computer location settings
      Executes dropped EXE
      Windows security modification
      System Location Discovery: System Language Discovery
      Suspicious behavior: GetForegroundWindowSpam
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      System policy modification
      PID:4916
    - - C:\Windows\SysWOW64\cmd.exe
        
        "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\vbc.exe" +s +h
        5⤵
        System Location Discovery: System Language Discovery
        Suspicious use of WriteProcessMemory
        
        PID:3940
      - C:\Windows\SysWOW64\attrib.exe
        
        attrib "C:\Users\Admin\AppData\Local\Temp\vbc.exe" +s +h
        6⤵
        Sets file to hidden
        System Location Discovery: System Language Discovery
        Views/modifies file attributes
        
        PID:2616
    - - C:\Windows\SysWOW64\cmd.exe
        
        "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
        5⤵
        System Location Discovery: System Language Discovery
        Suspicious use of WriteProcessMemory
        
        PID:2248
      - C:\Windows\SysWOW64\attrib.exe
        
        attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
        6⤵
        Sets file to hidden
        System Location Discovery: System Language Discovery
        Views/modifies file attributes
        
        PID:624
    - - C:\Windows\SysWOW64\notepad.exe
        
        notepad
        5⤵
        System Location Discovery: System Language Discovery
        
        PID:3780

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

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

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 Tools

T1562.001

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\NEWFUD.EXE

Filesize
1.1MB

MD5
5da38f692b690e812faf16af37dbd33b

SHA1
150b19e5f890fbba03345a7bc281a059d3c4cc0d

SHA256
05d83398af7bc3b5e20527b9eb5a75513c329f624ad40b36e2fb6bbfdc662c1e

SHA512
454ddc1bcd8fb30dd96c80913dc9f0b5072663d7610b3cc6605afed3db53d7f5bf3ba0d914d3f093f093aa205766c91e44e33ba3fda0364f3fc263b6b16b9926

Download Submit
C:\Users\Admin\AppData\Local\Temp\vbc.exe

Filesize
1.1MB

MD5
d881de17aa8f2e2c08cbb7b265f928f9

SHA1
08936aebc87decf0af6e8eada191062b5e65ac2a

SHA256
b3a37093609f9a20ad60b85a9fa9de2ba674cba9b5bd687729440c70ba619ca0

SHA512
5f23bfb1b8740247b36ed0ab741738c7d4c949736129e767213e321607d1ccd3e3a8428e4ba44bd28a275b5e3f6206285b1a522514b7ef7ea5e698d90a713d34

Download Submit
memory/3628-31-0x0000000073810000-0x0000000073DC1000-memory.dmp

Filesize
5.7MB

Download
memory/3628-46-0x0000000073810000-0x0000000073DC1000-memory.dmp

Filesize
5.7MB

Download
memory/3628-30-0x0000000073812000-0x0000000073813000-memory.dmp

Filesize
4KB

Download
memory/3668-11-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3668-7-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3668-14-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3668-10-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3668-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3780-44-0x0000000000C70000-0x0000000000C71000-memory.dmp

Filesize
4KB

Download
memory/4552-15-0x0000000074990000-0x0000000074F41000-memory.dmp

Filesize
5.7MB

Download
memory/4552-1-0x0000000074990000-0x0000000074F41000-memory.dmp

Filesize
5.7MB

Download
memory/4552-2-0x0000000074990000-0x0000000074F41000-memory.dmp

Filesize
5.7MB

Download
memory/4552-0-0x0000000074992000-0x0000000074993000-memory.dmp

Filesize
4KB

Download
memory/4916-41-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/4916-50-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/4916-45-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/4916-39-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/4916-36-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/4916-43-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/4916-47-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/4916-48-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/4916-49-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/4916-40-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/4916-51-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/4916-52-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/4916-53-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/4916-54-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/4916-55-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/4916-56-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/4916-57-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/4916-58-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads