darkcomet | 84a39d971e3a95f734c084ae6f86fe52108e5318ff58eedcaac64d57286779b2

Analysis

max time kernel
122s
max time network
123s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-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
2960	attrib.exe
2848	attrib.exe

Executes dropped EXE 2 IoCs

pid	Process
2308	vbc.exe
2436	winupdate.exe

Loads dropped DLL 2 IoCs

pid	Process
3004	JaffaCakes118_46b67e7cf28525e784fa2ae5521f3e90.exe
2308	vbc.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-1-5-21-4177215427-74451935-3209572229-1000\Software\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Users\\Admin\\AppData\\Local\\Temp\\Windupdt\\winupdate.exe"	vbc.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4177215427-74451935-3209572229-1000\Software\Microsoft\Windows\CurrentVersion\Run\JavaUpdater = "C:\\Users\\Admin\\AppData\\Roaming\\JavaUpdater\\JaffaCakes118_46b67e7cf28525e784fa2ae5521f3e90.exe"	JaffaCakes118_46b67e7cf28525e784fa2ae5521f3e90.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3004 set thread context of 2308	3004	JaffaCakes118_46b67e7cf28525e784fa2ae5521f3e90.exe	30

UPX packed file 11 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2308-17-0x0000000000400000-0x00000000004EB000-memory.dmp	upx
behavioral1/memory/2308-20-0x0000000000400000-0x00000000004EB000-memory.dmp	upx
behavioral1/memory/2308-22-0x0000000000400000-0x00000000004EB000-memory.dmp	upx
behavioral1/memory/2308-19-0x0000000000400000-0x00000000004EB000-memory.dmp	upx
behavioral1/memory/2308-24-0x0000000000400000-0x00000000004EB000-memory.dmp	upx
behavioral1/memory/2308-25-0x0000000000400000-0x00000000004EB000-memory.dmp	upx
behavioral1/memory/2308-26-0x0000000000400000-0x00000000004EB000-memory.dmp	upx
behavioral1/memory/2308-23-0x0000000000400000-0x00000000004EB000-memory.dmp	upx
behavioral1/memory/2308-13-0x0000000000400000-0x00000000004EB000-memory.dmp	upx
behavioral1/memory/2308-11-0x0000000000400000-0x00000000004EB000-memory.dmp	upx
behavioral1/memory/2308-38-0x0000000000400000-0x00000000004EB000-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	winupdate.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_46b67e7cf28525e784fa2ae5521f3e90.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	attrib.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.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
2860	cmd.exe
2796	PING.EXE

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2796	PING.EXE

Suspicious use of AdjustPrivilegeToken 23 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	2308	vbc.exe
Token: SeSecurityPrivilege	2308	vbc.exe
Token: SeTakeOwnershipPrivilege	2308	vbc.exe
Token: SeLoadDriverPrivilege	2308	vbc.exe
Token: SeSystemProfilePrivilege	2308	vbc.exe
Token: SeSystemtimePrivilege	2308	vbc.exe
Token: SeProfSingleProcessPrivilege	2308	vbc.exe
Token: SeIncBasePriorityPrivilege	2308	vbc.exe
Token: SeCreatePagefilePrivilege	2308	vbc.exe
Token: SeBackupPrivilege	2308	vbc.exe
Token: SeRestorePrivilege	2308	vbc.exe
Token: SeShutdownPrivilege	2308	vbc.exe
Token: SeDebugPrivilege	2308	vbc.exe
Token: SeSystemEnvironmentPrivilege	2308	vbc.exe
Token: SeChangeNotifyPrivilege	2308	vbc.exe
Token: SeRemoteShutdownPrivilege	2308	vbc.exe
Token: SeUndockPrivilege	2308	vbc.exe
Token: SeManageVolumePrivilege	2308	vbc.exe
Token: SeImpersonatePrivilege	2308	vbc.exe
Token: SeCreateGlobalPrivilege	2308	vbc.exe
Token: 33	2308	vbc.exe
Token: 34	2308	vbc.exe
Token: 35	2308	vbc.exe

Suspicious use of WriteProcessMemory 39 IoCs

description	pid	Process	procid_target
PID 3004 wrote to memory of 2308	3004	JaffaCakes118_46b67e7cf28525e784fa2ae5521f3e90.exe	30
PID 3004 wrote to memory of 2308	3004	JaffaCakes118_46b67e7cf28525e784fa2ae5521f3e90.exe	30
PID 3004 wrote to memory of 2308	3004	JaffaCakes118_46b67e7cf28525e784fa2ae5521f3e90.exe	30
PID 3004 wrote to memory of 2308	3004	JaffaCakes118_46b67e7cf28525e784fa2ae5521f3e90.exe	30
PID 3004 wrote to memory of 2308	3004	JaffaCakes118_46b67e7cf28525e784fa2ae5521f3e90.exe	30
PID 3004 wrote to memory of 2308	3004	JaffaCakes118_46b67e7cf28525e784fa2ae5521f3e90.exe	30
PID 3004 wrote to memory of 2308	3004	JaffaCakes118_46b67e7cf28525e784fa2ae5521f3e90.exe	30
PID 3004 wrote to memory of 2308	3004	JaffaCakes118_46b67e7cf28525e784fa2ae5521f3e90.exe	30
PID 2308 wrote to memory of 2440	2308	vbc.exe	31
PID 2308 wrote to memory of 2440	2308	vbc.exe	31
PID 2308 wrote to memory of 2440	2308	vbc.exe	31
PID 2308 wrote to memory of 2440	2308	vbc.exe	31
PID 2308 wrote to memory of 2844	2308	vbc.exe	33
PID 2308 wrote to memory of 2844	2308	vbc.exe	33
PID 2308 wrote to memory of 2844	2308	vbc.exe	33
PID 2308 wrote to memory of 2844	2308	vbc.exe	33
PID 2308 wrote to memory of 2860	2308	vbc.exe	34
PID 2308 wrote to memory of 2860	2308	vbc.exe	34
PID 2308 wrote to memory of 2860	2308	vbc.exe	34
PID 2308 wrote to memory of 2860	2308	vbc.exe	34
PID 2440 wrote to memory of 2960	2440	cmd.exe	37
PID 2440 wrote to memory of 2960	2440	cmd.exe	37
PID 2440 wrote to memory of 2960	2440	cmd.exe	37
PID 2440 wrote to memory of 2960	2440	cmd.exe	37
PID 2844 wrote to memory of 2848	2844	cmd.exe	38
PID 2844 wrote to memory of 2848	2844	cmd.exe	38
PID 2844 wrote to memory of 2848	2844	cmd.exe	38
PID 2844 wrote to memory of 2848	2844	cmd.exe	38
PID 2860 wrote to memory of 2796	2860	cmd.exe	39
PID 2860 wrote to memory of 2796	2860	cmd.exe	39
PID 2860 wrote to memory of 2796	2860	cmd.exe	39
PID 2860 wrote to memory of 2796	2860	cmd.exe	39
PID 2308 wrote to memory of 2436	2308	vbc.exe	40
PID 2308 wrote to memory of 2436	2308	vbc.exe	40
PID 2308 wrote to memory of 2436	2308	vbc.exe	40
PID 2308 wrote to memory of 2436	2308	vbc.exe	40
PID 2308 wrote to memory of 2436	2308	vbc.exe	40
PID 2308 wrote to memory of 2436	2308	vbc.exe	40
PID 2308 wrote to memory of 2436	2308	vbc.exe	40

Views/modifies file attributes 1 TTPs 2 IoCs

defense_evasion

Hidden Files and Directories

T1564.001

pid	Process
2960	attrib.exe
2848	attrib.exe

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_46b67e7cf28525e784fa2ae5521f3e90.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_46b67e7cf28525e784fa2ae5521f3e90.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3004
- C:\Users\Admin\AppData\Local\Temp\vbc.exe
  C:\Users\Admin\AppData\Local\Temp\vbc.exe
  2⤵
  - Modifies WinLogon for persistence
  - Executes dropped EXE
  - Loads dropped DLL
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2308
- - 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:2440
  - - 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:2960
- - 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:2844
  - - 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:2848
- - 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:2860
  - - 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:2796
- - 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:2436

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

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

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

Filesize
1.1MB

MD5
34aa912defa18c2c129f1e09d75c1d7e

SHA1
9c3046324657505a30ecd9b1fdb46c05bde7d470

SHA256
6df94b7fa33f1b87142adc39b3db0613fc520d9e7a5fd6a5301dd7f51f8d0386

SHA512
d1ea9368f5d7166180612fd763c87afb647d088498887961f5e7fb0a10f4a808bd5928e8a3666d70ff794093c51ecca8816f75dd47652fd4eb23dce7f9aa1f98

Download Submit
memory/2308-19-0x0000000000400000-0x00000000004EB000-memory.dmp

Filesize
940KB

Download
memory/2308-25-0x0000000000400000-0x00000000004EB000-memory.dmp

Filesize
940KB

Download
memory/2308-38-0x0000000000400000-0x00000000004EB000-memory.dmp

Filesize
940KB

Download
memory/2308-17-0x0000000000400000-0x00000000004EB000-memory.dmp

Filesize
940KB

Download
memory/2308-20-0x0000000000400000-0x00000000004EB000-memory.dmp

Filesize
940KB

Download
memory/2308-22-0x0000000000400000-0x00000000004EB000-memory.dmp

Filesize
940KB

Download
memory/2308-15-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2308-9-0x0000000000400000-0x00000000004EB000-memory.dmp

Filesize
940KB

Download
memory/2308-11-0x0000000000400000-0x00000000004EB000-memory.dmp

Filesize
940KB

Download
memory/2308-26-0x0000000000400000-0x00000000004EB000-memory.dmp

Filesize
940KB

Download
memory/2308-24-0x0000000000400000-0x00000000004EB000-memory.dmp

Filesize
940KB

Download
memory/2308-23-0x0000000000400000-0x00000000004EB000-memory.dmp

Filesize
940KB

Download
memory/2308-13-0x0000000000400000-0x00000000004EB000-memory.dmp

Filesize
940KB

Download
memory/3004-2-0x00000000740C0000-0x000000007466B000-memory.dmp

Filesize
5.7MB

Download
memory/3004-0-0x00000000740C1000-0x00000000740C2000-memory.dmp

Filesize
4KB

Download
memory/3004-21-0x00000000740C0000-0x000000007466B000-memory.dmp

Filesize
5.7MB

Download
memory/3004-1-0x00000000740C0000-0x000000007466B000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads