darkcomet | 712f8fe73fc9955808359aa68bb2e898c6661b4cf7de0f0dc27fd668dca17134

Analysis

max time kernel
149s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
04-11-2024 16:54

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General

Target

712f8fe73fc9955808359aa68bb2e898c6661b4cf7de0f0dc27fd668dca17134.exe
Size

658KB
MD5

25b08da1a964836d5b6d64ee0bcf30e0
SHA1

ad90af854d09a464b2ae958a93aa1cb713af1fb5
SHA256

712f8fe73fc9955808359aa68bb2e898c6661b4cf7de0f0dc27fd668dca17134
SHA512

45a5f0aac1d12fe33c5bceaa2a6b226d5fbb85c99c035c608686bc6143ef4c0abc15d197dc947fae4e441d234e43cf32396894e71f2f62f369f806dbf4a9f4bc
SSDEEP

12288:+9HFJ9rJxRX1uVVjoaWSoynxdO1FVBaOiRZTERfIhNkNCCLo9Ek5C/hj:KZ1xuVVjfFoynPaVBUR8f+kN10EBp

Score

10^/10

darkcomet hecker discovery evasion persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Hecker

7.tcp.eu.ngrok.io:11791

Mutex

DC_MUTEX-GAFJ7KC

Attributes

InstallPath
Runtime Broker.exe
gencode
1NDoWjfTb2iN
install
true
offline_keylogger
true
persistence
true
reg_key
RUNTIMEBROKHANDLER

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\\system32\\Runtime Broker.exe"	712f8fe73fc9955808359aa68bb2e898c6661b4cf7de0f0dc27fd668dca17134.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
3508	attrib.exe
1420	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-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	712f8fe73fc9955808359aa68bb2e898c6661b4cf7de0f0dc27fd668dca17134.exe

Executes dropped EXE 1 IoCs

pid	Process
5008	Runtime Broker.exe

Adds Run key to start application 2 TTPs 3 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\RUNTIMEBROKHANDLER = "C:\\Windows\\system32\\Runtime Broker.exe"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\RUNTIMEBROKHANDLER = "C:\\Windows\\system32\\Runtime Broker.exe"	712f8fe73fc9955808359aa68bb2e898c6661b4cf7de0f0dc27fd668dca17134.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\RUNTIMEBROKHANDLER = "C:\\Windows\\system32\\Runtime Broker.exe"	Runtime Broker.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 3 IoCs

Web Service

T1102

flow	ioc
8	7.tcp.eu.ngrok.io
60	7.tcp.eu.ngrok.io
107	7.tcp.eu.ngrok.io

Drops file in System32 directory 3 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\Runtime Broker.exe	712f8fe73fc9955808359aa68bb2e898c6661b4cf7de0f0dc27fd668dca17134.exe
File opened for modification	C:\Windows\SysWOW64\Runtime Broker.exe	712f8fe73fc9955808359aa68bb2e898c6661b4cf7de0f0dc27fd668dca17134.exe
File opened for modification	C:\Windows\SysWOW64\	712f8fe73fc9955808359aa68bb2e898c6661b4cf7de0f0dc27fd668dca17134.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 5008 set thread context of 4760	5008	Runtime Broker.exe	90

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 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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	iexplore.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	attrib.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	notepad.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	712f8fe73fc9955808359aa68bb2e898c6661b4cf7de0f0dc27fd668dca17134.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Runtime Broker.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
4760	iexplore.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	3936	712f8fe73fc9955808359aa68bb2e898c6661b4cf7de0f0dc27fd668dca17134.exe
Token: SeSecurityPrivilege	3936	712f8fe73fc9955808359aa68bb2e898c6661b4cf7de0f0dc27fd668dca17134.exe
Token: SeTakeOwnershipPrivilege	3936	712f8fe73fc9955808359aa68bb2e898c6661b4cf7de0f0dc27fd668dca17134.exe
Token: SeLoadDriverPrivilege	3936	712f8fe73fc9955808359aa68bb2e898c6661b4cf7de0f0dc27fd668dca17134.exe
Token: SeSystemProfilePrivilege	3936	712f8fe73fc9955808359aa68bb2e898c6661b4cf7de0f0dc27fd668dca17134.exe
Token: SeSystemtimePrivilege	3936	712f8fe73fc9955808359aa68bb2e898c6661b4cf7de0f0dc27fd668dca17134.exe
Token: SeProfSingleProcessPrivilege	3936	712f8fe73fc9955808359aa68bb2e898c6661b4cf7de0f0dc27fd668dca17134.exe
Token: SeIncBasePriorityPrivilege	3936	712f8fe73fc9955808359aa68bb2e898c6661b4cf7de0f0dc27fd668dca17134.exe
Token: SeCreatePagefilePrivilege	3936	712f8fe73fc9955808359aa68bb2e898c6661b4cf7de0f0dc27fd668dca17134.exe
Token: SeBackupPrivilege	3936	712f8fe73fc9955808359aa68bb2e898c6661b4cf7de0f0dc27fd668dca17134.exe
Token: SeRestorePrivilege	3936	712f8fe73fc9955808359aa68bb2e898c6661b4cf7de0f0dc27fd668dca17134.exe
Token: SeShutdownPrivilege	3936	712f8fe73fc9955808359aa68bb2e898c6661b4cf7de0f0dc27fd668dca17134.exe
Token: SeDebugPrivilege	3936	712f8fe73fc9955808359aa68bb2e898c6661b4cf7de0f0dc27fd668dca17134.exe
Token: SeSystemEnvironmentPrivilege	3936	712f8fe73fc9955808359aa68bb2e898c6661b4cf7de0f0dc27fd668dca17134.exe
Token: SeChangeNotifyPrivilege	3936	712f8fe73fc9955808359aa68bb2e898c6661b4cf7de0f0dc27fd668dca17134.exe
Token: SeRemoteShutdownPrivilege	3936	712f8fe73fc9955808359aa68bb2e898c6661b4cf7de0f0dc27fd668dca17134.exe
Token: SeUndockPrivilege	3936	712f8fe73fc9955808359aa68bb2e898c6661b4cf7de0f0dc27fd668dca17134.exe
Token: SeManageVolumePrivilege	3936	712f8fe73fc9955808359aa68bb2e898c6661b4cf7de0f0dc27fd668dca17134.exe
Token: SeImpersonatePrivilege	3936	712f8fe73fc9955808359aa68bb2e898c6661b4cf7de0f0dc27fd668dca17134.exe
Token: SeCreateGlobalPrivilege	3936	712f8fe73fc9955808359aa68bb2e898c6661b4cf7de0f0dc27fd668dca17134.exe
Token: 33	3936	712f8fe73fc9955808359aa68bb2e898c6661b4cf7de0f0dc27fd668dca17134.exe
Token: 34	3936	712f8fe73fc9955808359aa68bb2e898c6661b4cf7de0f0dc27fd668dca17134.exe
Token: 35	3936	712f8fe73fc9955808359aa68bb2e898c6661b4cf7de0f0dc27fd668dca17134.exe
Token: 36	3936	712f8fe73fc9955808359aa68bb2e898c6661b4cf7de0f0dc27fd668dca17134.exe
Token: SeIncreaseQuotaPrivilege	5008	Runtime Broker.exe
Token: SeSecurityPrivilege	5008	Runtime Broker.exe
Token: SeTakeOwnershipPrivilege	5008	Runtime Broker.exe
Token: SeLoadDriverPrivilege	5008	Runtime Broker.exe
Token: SeSystemProfilePrivilege	5008	Runtime Broker.exe
Token: SeSystemtimePrivilege	5008	Runtime Broker.exe
Token: SeProfSingleProcessPrivilege	5008	Runtime Broker.exe
Token: SeIncBasePriorityPrivilege	5008	Runtime Broker.exe
Token: SeCreatePagefilePrivilege	5008	Runtime Broker.exe
Token: SeBackupPrivilege	5008	Runtime Broker.exe
Token: SeRestorePrivilege	5008	Runtime Broker.exe
Token: SeShutdownPrivilege	5008	Runtime Broker.exe
Token: SeDebugPrivilege	5008	Runtime Broker.exe
Token: SeSystemEnvironmentPrivilege	5008	Runtime Broker.exe
Token: SeChangeNotifyPrivilege	5008	Runtime Broker.exe
Token: SeRemoteShutdownPrivilege	5008	Runtime Broker.exe
Token: SeUndockPrivilege	5008	Runtime Broker.exe
Token: SeManageVolumePrivilege	5008	Runtime Broker.exe
Token: SeImpersonatePrivilege	5008	Runtime Broker.exe
Token: SeCreateGlobalPrivilege	5008	Runtime Broker.exe
Token: 33	5008	Runtime Broker.exe
Token: 34	5008	Runtime Broker.exe
Token: 35	5008	Runtime Broker.exe
Token: 36	5008	Runtime Broker.exe
Token: SeIncreaseQuotaPrivilege	4760	iexplore.exe
Token: SeSecurityPrivilege	4760	iexplore.exe
Token: SeTakeOwnershipPrivilege	4760	iexplore.exe
Token: SeLoadDriverPrivilege	4760	iexplore.exe
Token: SeSystemProfilePrivilege	4760	iexplore.exe
Token: SeSystemtimePrivilege	4760	iexplore.exe
Token: SeProfSingleProcessPrivilege	4760	iexplore.exe
Token: SeIncBasePriorityPrivilege	4760	iexplore.exe
Token: SeCreatePagefilePrivilege	4760	iexplore.exe
Token: SeBackupPrivilege	4760	iexplore.exe
Token: SeRestorePrivilege	4760	iexplore.exe
Token: SeShutdownPrivilege	4760	iexplore.exe
Token: SeDebugPrivilege	4760	iexplore.exe
Token: SeSystemEnvironmentPrivilege	4760	iexplore.exe
Token: SeChangeNotifyPrivilege	4760	iexplore.exe
Token: SeRemoteShutdownPrivilege	4760	iexplore.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4760	iexplore.exe

Suspicious use of WriteProcessMemory 42 IoCs

description	pid	Process	procid_target
PID 3936 wrote to memory of 4860	3936	712f8fe73fc9955808359aa68bb2e898c6661b4cf7de0f0dc27fd668dca17134.exe	84
PID 3936 wrote to memory of 4860	3936	712f8fe73fc9955808359aa68bb2e898c6661b4cf7de0f0dc27fd668dca17134.exe	84
PID 3936 wrote to memory of 4860	3936	712f8fe73fc9955808359aa68bb2e898c6661b4cf7de0f0dc27fd668dca17134.exe	84
PID 3936 wrote to memory of 2064	3936	712f8fe73fc9955808359aa68bb2e898c6661b4cf7de0f0dc27fd668dca17134.exe	86
PID 3936 wrote to memory of 2064	3936	712f8fe73fc9955808359aa68bb2e898c6661b4cf7de0f0dc27fd668dca17134.exe	86
PID 3936 wrote to memory of 2064	3936	712f8fe73fc9955808359aa68bb2e898c6661b4cf7de0f0dc27fd668dca17134.exe	86
PID 3936 wrote to memory of 5008	3936	712f8fe73fc9955808359aa68bb2e898c6661b4cf7de0f0dc27fd668dca17134.exe	88
PID 3936 wrote to memory of 5008	3936	712f8fe73fc9955808359aa68bb2e898c6661b4cf7de0f0dc27fd668dca17134.exe	88
PID 3936 wrote to memory of 5008	3936	712f8fe73fc9955808359aa68bb2e898c6661b4cf7de0f0dc27fd668dca17134.exe	88
PID 4860 wrote to memory of 3508	4860	cmd.exe	89
PID 4860 wrote to memory of 3508	4860	cmd.exe	89
PID 4860 wrote to memory of 3508	4860	cmd.exe	89
PID 5008 wrote to memory of 4760	5008	Runtime Broker.exe	90
PID 5008 wrote to memory of 4760	5008	Runtime Broker.exe	90
PID 5008 wrote to memory of 4760	5008	Runtime Broker.exe	90
PID 5008 wrote to memory of 4760	5008	Runtime Broker.exe	90
PID 5008 wrote to memory of 4760	5008	Runtime Broker.exe	90
PID 2064 wrote to memory of 1420	2064	cmd.exe	91
PID 2064 wrote to memory of 1420	2064	cmd.exe	91
PID 2064 wrote to memory of 1420	2064	cmd.exe	91
PID 4760 wrote to memory of 2028	4760	iexplore.exe	92
PID 4760 wrote to memory of 2028	4760	iexplore.exe	92
PID 4760 wrote to memory of 2028	4760	iexplore.exe	92
PID 4760 wrote to memory of 2028	4760	iexplore.exe	92
PID 4760 wrote to memory of 2028	4760	iexplore.exe	92
PID 4760 wrote to memory of 2028	4760	iexplore.exe	92
PID 4760 wrote to memory of 2028	4760	iexplore.exe	92
PID 4760 wrote to memory of 2028	4760	iexplore.exe	92
PID 4760 wrote to memory of 2028	4760	iexplore.exe	92
PID 4760 wrote to memory of 2028	4760	iexplore.exe	92
PID 4760 wrote to memory of 2028	4760	iexplore.exe	92
PID 4760 wrote to memory of 2028	4760	iexplore.exe	92
PID 4760 wrote to memory of 2028	4760	iexplore.exe	92
PID 4760 wrote to memory of 2028	4760	iexplore.exe	92
PID 4760 wrote to memory of 2028	4760	iexplore.exe	92
PID 4760 wrote to memory of 2028	4760	iexplore.exe	92
PID 4760 wrote to memory of 2028	4760	iexplore.exe	92
PID 4760 wrote to memory of 2028	4760	iexplore.exe	92
PID 4760 wrote to memory of 2028	4760	iexplore.exe	92
PID 4760 wrote to memory of 2028	4760	iexplore.exe	92
PID 4760 wrote to memory of 2028	4760	iexplore.exe	92
PID 4760 wrote to memory of 2028	4760	iexplore.exe	92

Views/modifies file attributes 1 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
3508	attrib.exe
1420	attrib.exe

C:\Users\Admin\AppData\Local\Temp\712f8fe73fc9955808359aa68bb2e898c6661b4cf7de0f0dc27fd668dca17134.exe
"C:\Users\Admin\AppData\Local\Temp\712f8fe73fc9955808359aa68bb2e898c6661b4cf7de0f0dc27fd668dca17134.exe"
1⤵
- Modifies WinLogon for persistence
- Checks computer location settings
- Adds Run key to start application
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3936
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\712f8fe73fc9955808359aa68bb2e898c6661b4cf7de0f0dc27fd668dca17134.exe" +s +h
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4860
- - C:\Windows\SysWOW64\attrib.exe
    attrib "C:\Users\Admin\AppData\Local\Temp\712f8fe73fc9955808359aa68bb2e898c6661b4cf7de0f0dc27fd668dca17134.exe" +s +h
    3⤵
    - Sets file to hidden
    - System Location Discovery: System Language Discovery
    - Views/modifies file attributes
    PID:3508
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
  2⤵
  - 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
    3⤵
    - Sets file to hidden
    - System Location Discovery: System Language Discovery
    - Views/modifies file attributes
    PID:1420
- C:\Windows\SysWOW64\Runtime Broker.exe
  "C:\Windows\system32\Runtime Broker.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:5008
- - C:\Program Files (x86)\Internet Explorer\iexplore.exe
    "C:\Program Files (x86)\Internet Explorer\iexplore.exe"
    3⤵
    - Adds Run key to start application
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:4760
  - - C:\Windows\SysWOW64\notepad.exe
      notepad
      4⤵
      System Location Discovery: System Language Discovery
      PID:2028

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

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

Web Service

T1102

Exfiltration

Impact

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Downloads

C:\Windows\SysWOW64\Runtime Broker.exe

Filesize
658KB

MD5
25b08da1a964836d5b6d64ee0bcf30e0

SHA1
ad90af854d09a464b2ae958a93aa1cb713af1fb5

SHA256
712f8fe73fc9955808359aa68bb2e898c6661b4cf7de0f0dc27fd668dca17134

SHA512
45a5f0aac1d12fe33c5bceaa2a6b226d5fbb85c99c035c608686bc6143ef4c0abc15d197dc947fae4e441d234e43cf32396894e71f2f62f369f806dbf4a9f4bc

Download Submit
memory/2028-17-0x0000000000710000-0x0000000000711000-memory.dmp

Filesize
4KB

Download
memory/3936-0-0x0000000002180000-0x0000000002181000-memory.dmp

Filesize
4KB

Download
memory/3936-18-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/4760-15-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/5008-14-0x00000000006B0000-0x00000000006B1000-memory.dmp

Filesize
4KB

Download
memory/5008-16-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads