darkcomet | ae41a577dd9f2723afed0b2afba7dbc4e96a8b0ed489dde8a61c4fcd9591a0b8

Analysis

max time kernel
103s
max time network
129s
platform
windows10-2004_x64
resource
win10v2004-20250314-en
resource tags

arch:x64arch:x86image:win10v2004-20250314-enlocale:en-usos:windows10-2004-x64system
submitted
16/03/2025, 18:31

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General

Target

JaffaCakes118_7b4bc8f35e4887772855b3573a2147b2.exe
Size

2.1MB
MD5

7b4bc8f35e4887772855b3573a2147b2
SHA1

2daa51b1a67c1cea7168fbad460041ac3d99a974
SHA256

ae41a577dd9f2723afed0b2afba7dbc4e96a8b0ed489dde8a61c4fcd9591a0b8
SHA512

14675f03d2ceb84f1657c8b3bca47426540267640a8bd6100e928a9a0a1adb49f60d9ca9a930af6d5f9f80274277349c1213fb6c721c22e7e9bef99f2304db64
SSDEEP

49152:5m7NqIQ73q0zrc24judrdV0la4P1GURSYw:w5i63judrdV0lL1GU4Yw

Score

10^/10

darkcomet guest16 defense_evasion discovery persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

24.13.208.88:100

http://jaxxyg5.zapto.org:100

Mutex

DC_MUTEX-7QBA6BH

Attributes

InstallPath
Windows Startup\Java Update.exe
gencode
99nVAa6KGXwo
install
true
offline_keylogger
true
persistence
true
reg_key
Java Update

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:\\ProgramData\\Microsoft\\Windows\\Start Menu\\Programs\\Windows Startup\\Java Update.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
116	attrib.exe
2332	attrib.exe

Executes dropped EXE 2 IoCs

pid	Process
2252	FLORISTBOOTER 3.1.EXE
4848	Java Update.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-1-5-21-805952410-2104024357-1716932545-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Skype Update = "C:\\Users\\Admin\\AppData\\Roaming\\Skype Update.exe"	JaffaCakes118_7b4bc8f35e4887772855b3573a2147b2.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-805952410-2104024357-1716932545-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Java Update = "C:\\ProgramData\\Microsoft\\Windows\\Start Menu\\Programs\\Windows Startup\\Java Update.exe"	vbc.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1104 set thread context of 1348	1104	JaffaCakes118_7b4bc8f35e4887772855b3573a2147b2.exe	89

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe	attrib.exe
File opened for modification	C:\Windows\Microsoft.NET\Framework\v2.0.50727	attrib.exe

System Location Discovery: System Language Discovery 1 TTPs 8 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	attrib.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	attrib.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	FLORISTBOOTER 3.1.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Java Update.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_7b4bc8f35e4887772855b3573a2147b2.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vbc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of AdjustPrivilegeToken 24 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	1348	vbc.exe
Token: SeSecurityPrivilege	1348	vbc.exe
Token: SeTakeOwnershipPrivilege	1348	vbc.exe
Token: SeLoadDriverPrivilege	1348	vbc.exe
Token: SeSystemProfilePrivilege	1348	vbc.exe
Token: SeSystemtimePrivilege	1348	vbc.exe
Token: SeProfSingleProcessPrivilege	1348	vbc.exe
Token: SeIncBasePriorityPrivilege	1348	vbc.exe
Token: SeCreatePagefilePrivilege	1348	vbc.exe
Token: SeBackupPrivilege	1348	vbc.exe
Token: SeRestorePrivilege	1348	vbc.exe
Token: SeShutdownPrivilege	1348	vbc.exe
Token: SeDebugPrivilege	1348	vbc.exe
Token: SeSystemEnvironmentPrivilege	1348	vbc.exe
Token: SeChangeNotifyPrivilege	1348	vbc.exe
Token: SeRemoteShutdownPrivilege	1348	vbc.exe
Token: SeUndockPrivilege	1348	vbc.exe
Token: SeManageVolumePrivilege	1348	vbc.exe
Token: SeImpersonatePrivilege	1348	vbc.exe
Token: SeCreateGlobalPrivilege	1348	vbc.exe
Token: 33	1348	vbc.exe
Token: 34	1348	vbc.exe
Token: 35	1348	vbc.exe
Token: 36	1348	vbc.exe

Suspicious use of WriteProcessMemory 32 IoCs

description	pid	Process	procid_target
PID 1104 wrote to memory of 1348	1104	JaffaCakes118_7b4bc8f35e4887772855b3573a2147b2.exe	89
PID 1104 wrote to memory of 1348	1104	JaffaCakes118_7b4bc8f35e4887772855b3573a2147b2.exe	89
PID 1104 wrote to memory of 1348	1104	JaffaCakes118_7b4bc8f35e4887772855b3573a2147b2.exe	89
PID 1104 wrote to memory of 1348	1104	JaffaCakes118_7b4bc8f35e4887772855b3573a2147b2.exe	89
PID 1104 wrote to memory of 1348	1104	JaffaCakes118_7b4bc8f35e4887772855b3573a2147b2.exe	89
PID 1104 wrote to memory of 1348	1104	JaffaCakes118_7b4bc8f35e4887772855b3573a2147b2.exe	89
PID 1104 wrote to memory of 1348	1104	JaffaCakes118_7b4bc8f35e4887772855b3573a2147b2.exe	89
PID 1104 wrote to memory of 1348	1104	JaffaCakes118_7b4bc8f35e4887772855b3573a2147b2.exe	89
PID 1104 wrote to memory of 1348	1104	JaffaCakes118_7b4bc8f35e4887772855b3573a2147b2.exe	89
PID 1104 wrote to memory of 1348	1104	JaffaCakes118_7b4bc8f35e4887772855b3573a2147b2.exe	89
PID 1104 wrote to memory of 1348	1104	JaffaCakes118_7b4bc8f35e4887772855b3573a2147b2.exe	89
PID 1104 wrote to memory of 1348	1104	JaffaCakes118_7b4bc8f35e4887772855b3573a2147b2.exe	89
PID 1104 wrote to memory of 1348	1104	JaffaCakes118_7b4bc8f35e4887772855b3573a2147b2.exe	89
PID 1104 wrote to memory of 1348	1104	JaffaCakes118_7b4bc8f35e4887772855b3573a2147b2.exe	89
PID 1348 wrote to memory of 2676	1348	vbc.exe	90
PID 1348 wrote to memory of 2676	1348	vbc.exe	90
PID 1348 wrote to memory of 2676	1348	vbc.exe	90
PID 1348 wrote to memory of 3588	1348	vbc.exe	92
PID 1348 wrote to memory of 3588	1348	vbc.exe	92
PID 1348 wrote to memory of 3588	1348	vbc.exe	92
PID 1348 wrote to memory of 2252	1348	vbc.exe	94
PID 1348 wrote to memory of 2252	1348	vbc.exe	94
PID 1348 wrote to memory of 2252	1348	vbc.exe	94
PID 2676 wrote to memory of 116	2676	cmd.exe	95
PID 2676 wrote to memory of 116	2676	cmd.exe	95
PID 2676 wrote to memory of 116	2676	cmd.exe	95
PID 3588 wrote to memory of 2332	3588	cmd.exe	96
PID 3588 wrote to memory of 2332	3588	cmd.exe	96
PID 3588 wrote to memory of 2332	3588	cmd.exe	96
PID 1348 wrote to memory of 4848	1348	vbc.exe	97
PID 1348 wrote to memory of 4848	1348	vbc.exe	97
PID 1348 wrote to memory of 4848	1348	vbc.exe	97

Views/modifies file attributes 1 TTPs 2 IoCs

defense_evasion

Hidden Files and Directories

T1564.001

pid	Process
116	attrib.exe
2332	attrib.exe

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7b4bc8f35e4887772855b3573a2147b2.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7b4bc8f35e4887772855b3573a2147b2.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1104
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
  C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
  2⤵
  - Modifies WinLogon for persistence
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1348
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /k attrib "C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe" +s +h
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2676
  - - C:\Windows\SysWOW64\attrib.exe
      attrib "C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe" +s +h
      4⤵
      Sets file to hidden
      Drops file in Windows directory
      System Location Discovery: System Language Discovery
      Views/modifies file attributes
      PID:116
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /k attrib "C:\Windows\Microsoft.NET\Framework\v2.0.50727" +s +h
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:3588
  - - C:\Windows\SysWOW64\attrib.exe
      attrib "C:\Windows\Microsoft.NET\Framework\v2.0.50727" +s +h
      4⤵
      Sets file to hidden
      Drops file in Windows directory
      System Location Discovery: System Language Discovery
      Views/modifies file attributes
      PID:2332
- - C:\Users\Admin\AppData\Local\Temp\FLORISTBOOTER 3.1.EXE
    "C:\Users\Admin\AppData\Local\Temp\FLORISTBOOTER 3.1.EXE"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:2252
- - C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Windows Startup\Java Update.exe
    "C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Windows Startup\Java Update.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:4848

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

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Windows Startup\Java Update.exe

Filesize
1.1MB

MD5
d881de17aa8f2e2c08cbb7b265f928f9

SHA1
08936aebc87decf0af6e8eada191062b5e65ac2a

SHA256
b3a37093609f9a20ad60b85a9fa9de2ba674cba9b5bd687729440c70ba619ca0

SHA512
5f23bfb1b8740247b36ed0ab741738c7d4c949736129e767213e321607d1ccd3e3a8428e4ba44bd28a275b5e3f6206285b1a522514b7ef7ea5e698d90a713d34

Download Submit
C:\Users\Admin\AppData\Local\Temp\FLORISTBOOTER 3.1.EXE

Filesize
306KB

MD5
14db65bac0b48a2345dacf817a398ed7

SHA1
350fe4a76c6a2b998e5c447c12508d0168ada10a

SHA256
a013e82cfeeeb28f0aeb2990c8abfdc65387d63cf6b11ee62259bea7b10f0741

SHA512
a31196b689d4e8c5c36ea71d1a5c09652286e07755689b3226863c2e1d162fb813a2edbfa024ef2268edb13e75ca6b933fae83c887c91fe1c2f22e382a7cf1c9

Download Submit
memory/1104-0-0x00007FFB9CA70000-0x00007FFB9CC65000-memory.dmp

Filesize
2.0MB

Download
memory/1348-3-0x0000000000400000-0x000000000052F000-memory.dmp

Filesize
1.2MB

Download
memory/1348-2-0x0000000000400000-0x000000000052F000-memory.dmp

Filesize
1.2MB

Download
memory/1348-5-0x0000000000400000-0x000000000052F000-memory.dmp

Filesize
1.2MB

Download
memory/1348-6-0x00007FFB9CA70000-0x00007FFB9CC65000-memory.dmp

Filesize
2.0MB

Download
memory/1348-7-0x00007FFB9CA70000-0x00007FFB9CC65000-memory.dmp

Filesize
2.0MB

Download
memory/1348-38-0x0000000000400000-0x000000000052F000-memory.dmp

Filesize
1.2MB

Download
memory/1348-40-0x00007FFB9CA70000-0x00007FFB9CC65000-memory.dmp

Filesize
2.0MB

Download
memory/2252-23-0x0000000004DC0000-0x0000000004E5C000-memory.dmp

Filesize
624KB

Download
memory/2252-25-0x0000000004E60000-0x0000000004EF2000-memory.dmp

Filesize
584KB

Download
memory/2252-35-0x0000000004D40000-0x0000000004D4A000-memory.dmp

Filesize
40KB

Download
memory/2252-36-0x0000000004F60000-0x0000000004FB6000-memory.dmp

Filesize
344KB

Download
memory/2252-24-0x0000000005410000-0x00000000059B4000-memory.dmp

Filesize
5.6MB

Download
memory/2252-22-0x0000000000350000-0x00000000003A4000-memory.dmp

Filesize
336KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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