darkcomet | 84a39d971e3a95f734c084ae6f86fe52108e5318ff58eedcaac64d57286779b2

Analysis

max time kernel
91s
max time network
139s
platform
windows10-2004_x64
resource
win10v2004-20250217-en
resource tags

arch:x64arch:x86image:win10v2004-20250217-enlocale:en-usos:windows10-2004-x64system
submitted
03/03/2025, 11:07

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General

Target

JaffaCakes118_46b67e7cf28525e784fa2ae5521f3e90.exe
Size

733KB
MD5

46b67e7cf28525e784fa2ae5521f3e90
SHA1

c02b243b342bf12db04e3a3baddccc6284ac8a16
SHA256

84a39d971e3a95f734c084ae6f86fe52108e5318ff58eedcaac64d57286779b2
SHA512

6aa6e28b7bfbf8982e0790ba8d34ea3067aa68bfe46d8df9818567736e54ef25573ba5810bcecee452207623e56f5531aa1a936aa30882b00df19673546ebed5
SSDEEP

12288:4MAZoTc56y+ZyYr76OI2QUXxjk/XmrSrYz0RND1PT3Kk1Ja41IdhPNCzSVCN8t4H:St3UDz44IA5iS082H

Score

10^/10

darkcomet guest16 defense_evasion discovery persistence rat trojan upx

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

faceboock.zapto.org:8080

Mutex

DC_MUTEX-XPG9DMP

Attributes

InstallPath
Windupdt\winupdate.exe
gencode
RtbUjfBkpiQF
install
true
offline_keylogger
true
password
Lieschen2135
persistence
true
reg_key
winupdater

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:\\Users\\Admin\\AppData\\Local\\Temp\\Windupdt\\winupdate.exe"	vbc.exe

Sets file to hidden 1 TTPs 2 IoCs

Modifies file attributes to stop it showing in Explorer etc.

defense_evasion

Hidden Files and Directories

T1564.001

pid	Process
2616	attrib.exe
1340	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-1-5-21-250031470-1197856012-2659781506-1000\Control Panel\International\Geo\Nation	vbc.exe

Executes dropped EXE 2 IoCs

pid	Process
2404	vbc.exe
2460	winupdate.exe

Uses the VBS compiler for execution 1 TTPs

Command and Scripting Interpreter
T1059

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-1-5-21-250031470-1197856012-2659781506-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\JavaUpdater = "C:\\Users\\Admin\\AppData\\Roaming\\JavaUpdater\\JaffaCakes118_46b67e7cf28525e784fa2ae5521f3e90.exe"	JaffaCakes118_46b67e7cf28525e784fa2ae5521f3e90.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-250031470-1197856012-2659781506-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Users\\Admin\\AppData\\Local\\Temp\\Windupdt\\winupdate.exe"	vbc.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 428 set thread context of 2404	428	JaffaCakes118_46b67e7cf28525e784fa2ae5521f3e90.exe	86

UPX packed file 7 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2404-7-0x0000000000400000-0x00000000004EB000-memory.dmp	upx
behavioral2/memory/2404-10-0x0000000000400000-0x00000000004EB000-memory.dmp	upx
behavioral2/memory/2404-13-0x0000000000400000-0x00000000004EB000-memory.dmp	upx
behavioral2/memory/2404-15-0x0000000000400000-0x00000000004EB000-memory.dmp	upx
behavioral2/memory/2404-16-0x0000000000400000-0x00000000004EB000-memory.dmp	upx
behavioral2/memory/2404-14-0x0000000000400000-0x00000000004EB000-memory.dmp	upx
behavioral2/memory/2404-79-0x0000000000400000-0x00000000004EB000-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 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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	attrib.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winupdate.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_46b67e7cf28525e784fa2ae5521f3e90.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	attrib.exe

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
2356	cmd.exe
1984	PING.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

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1984	PING.EXE

Suspicious use of AdjustPrivilegeToken 24 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	2404	vbc.exe
Token: SeSecurityPrivilege	2404	vbc.exe
Token: SeTakeOwnershipPrivilege	2404	vbc.exe
Token: SeLoadDriverPrivilege	2404	vbc.exe
Token: SeSystemProfilePrivilege	2404	vbc.exe
Token: SeSystemtimePrivilege	2404	vbc.exe
Token: SeProfSingleProcessPrivilege	2404	vbc.exe
Token: SeIncBasePriorityPrivilege	2404	vbc.exe
Token: SeCreatePagefilePrivilege	2404	vbc.exe
Token: SeBackupPrivilege	2404	vbc.exe
Token: SeRestorePrivilege	2404	vbc.exe
Token: SeShutdownPrivilege	2404	vbc.exe
Token: SeDebugPrivilege	2404	vbc.exe
Token: SeSystemEnvironmentPrivilege	2404	vbc.exe
Token: SeChangeNotifyPrivilege	2404	vbc.exe
Token: SeRemoteShutdownPrivilege	2404	vbc.exe
Token: SeUndockPrivilege	2404	vbc.exe
Token: SeManageVolumePrivilege	2404	vbc.exe
Token: SeImpersonatePrivilege	2404	vbc.exe
Token: SeCreateGlobalPrivilege	2404	vbc.exe
Token: 33	2404	vbc.exe
Token: 34	2404	vbc.exe
Token: 35	2404	vbc.exe
Token: 36	2404	vbc.exe

Suspicious use of WriteProcessMemory 29 IoCs

description	pid	Process	procid_target
PID 428 wrote to memory of 2404	428	JaffaCakes118_46b67e7cf28525e784fa2ae5521f3e90.exe	86
PID 428 wrote to memory of 2404	428	JaffaCakes118_46b67e7cf28525e784fa2ae5521f3e90.exe	86
PID 428 wrote to memory of 2404	428	JaffaCakes118_46b67e7cf28525e784fa2ae5521f3e90.exe	86
PID 428 wrote to memory of 2404	428	JaffaCakes118_46b67e7cf28525e784fa2ae5521f3e90.exe	86
PID 428 wrote to memory of 2404	428	JaffaCakes118_46b67e7cf28525e784fa2ae5521f3e90.exe	86
PID 428 wrote to memory of 2404	428	JaffaCakes118_46b67e7cf28525e784fa2ae5521f3e90.exe	86
PID 428 wrote to memory of 2404	428	JaffaCakes118_46b67e7cf28525e784fa2ae5521f3e90.exe	86
PID 428 wrote to memory of 2404	428	JaffaCakes118_46b67e7cf28525e784fa2ae5521f3e90.exe	86
PID 2404 wrote to memory of 1912	2404	vbc.exe	87
PID 2404 wrote to memory of 1912	2404	vbc.exe	87
PID 2404 wrote to memory of 1912	2404	vbc.exe	87
PID 2404 wrote to memory of 2064	2404	vbc.exe	89
PID 2404 wrote to memory of 2064	2404	vbc.exe	89
PID 2404 wrote to memory of 2064	2404	vbc.exe	89
PID 2404 wrote to memory of 2356	2404	vbc.exe	90
PID 2404 wrote to memory of 2356	2404	vbc.exe	90
PID 2404 wrote to memory of 2356	2404	vbc.exe	90
PID 2064 wrote to memory of 2616	2064	cmd.exe	93
PID 2064 wrote to memory of 2616	2064	cmd.exe	93
PID 2064 wrote to memory of 2616	2064	cmd.exe	93
PID 1912 wrote to memory of 1340	1912	cmd.exe	94
PID 1912 wrote to memory of 1340	1912	cmd.exe	94
PID 1912 wrote to memory of 1340	1912	cmd.exe	94
PID 2356 wrote to memory of 1984	2356	cmd.exe	95
PID 2356 wrote to memory of 1984	2356	cmd.exe	95
PID 2356 wrote to memory of 1984	2356	cmd.exe	95
PID 2404 wrote to memory of 2460	2404	vbc.exe	96
PID 2404 wrote to memory of 2460	2404	vbc.exe	96
PID 2404 wrote to memory of 2460	2404	vbc.exe	96

Views/modifies file attributes 1 TTPs 2 IoCs

defense_evasion

Hidden Files and Directories

T1564.001

pid	Process
2616	attrib.exe
1340	attrib.exe

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_46b67e7cf28525e784fa2ae5521f3e90.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_46b67e7cf28525e784fa2ae5521f3e90.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:428
- C:\Users\Admin\AppData\Local\Temp\vbc.exe
  C:\Users\Admin\AppData\Local\Temp\vbc.exe
  2⤵
  - Modifies WinLogon for persistence
  - Checks computer location settings
  - Executes dropped EXE
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2404
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\vbc.exe" +s +h
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1912
  - - C:\Windows\SysWOW64\attrib.exe
      attrib "C:\Users\Admin\AppData\Local\Temp\vbc.exe" +s +h
      4⤵
      Sets file to hidden
      System Location Discovery: System Language Discovery
      Views/modifies file attributes
      PID:1340
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2064
  - - C:\Windows\SysWOW64\attrib.exe
      attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
      4⤵
      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 ping 127.0.0.1 -n 5&del "C:\Users\Admin\AppData\Local\Temp\vbc.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    - System Network Configuration Discovery: Internet Connection Discovery
    - Suspicious use of WriteProcessMemory
    PID:2356
  - - C:\Windows\SysWOW64\PING.EXE
      ping 127.0.0.1 -n 5
      4⤵
      System Location Discovery: System Language Discovery
      System Network Configuration Discovery: Internet Connection Discovery
      Runs ping.exe
      PID:1984
- - C:\Users\Admin\AppData\Local\Temp\Windupdt\winupdate.exe
    "C:\Users\Admin\AppData\Local\Temp\Windupdt\winupdate.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:2460

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

Remote System Discovery

T1018

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

System Network Configuration Discovery

T1016

Internet Connection Discovery

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
1.1MB

MD5
d881de17aa8f2e2c08cbb7b265f928f9

SHA1
08936aebc87decf0af6e8eada191062b5e65ac2a

SHA256
b3a37093609f9a20ad60b85a9fa9de2ba674cba9b5bd687729440c70ba619ca0

SHA512
5f23bfb1b8740247b36ed0ab741738c7d4c949736129e767213e321607d1ccd3e3a8428e4ba44bd28a275b5e3f6206285b1a522514b7ef7ea5e698d90a713d34

Download Submit
memory/428-17-0x0000000074B80000-0x0000000075131000-memory.dmp

Filesize
5.7MB

Download
memory/428-1-0x0000000074B80000-0x0000000075131000-memory.dmp

Filesize
5.7MB

Download
memory/428-2-0x0000000074B80000-0x0000000075131000-memory.dmp

Filesize
5.7MB

Download
memory/428-0-0x0000000074B82000-0x0000000074B83000-memory.dmp

Filesize
4KB

Download
memory/2404-7-0x0000000000400000-0x00000000004EB000-memory.dmp

Filesize
940KB

Download
memory/2404-13-0x0000000000400000-0x00000000004EB000-memory.dmp

Filesize
940KB

Download
memory/2404-15-0x0000000000400000-0x00000000004EB000-memory.dmp

Filesize
940KB

Download
memory/2404-16-0x0000000000400000-0x00000000004EB000-memory.dmp

Filesize
940KB

Download
memory/2404-10-0x0000000000400000-0x00000000004EB000-memory.dmp

Filesize
940KB

Download
memory/2404-18-0x0000000002440000-0x0000000002441000-memory.dmp

Filesize
4KB

Download
memory/2404-14-0x0000000000400000-0x00000000004EB000-memory.dmp

Filesize
940KB

Download
memory/2404-79-0x0000000000400000-0x00000000004EB000-memory.dmp

Filesize
940KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads