darkcomet | 712f8fe73fc9955808359aa68bb2e898c6661b4cf7de0f0dc27fd668dca17134

Analysis

max time kernel
149s
max time network
151s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-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
1748	attrib.exe
2100	attrib.exe

Executes dropped EXE 1 IoCs

pid	Process
2560	Runtime Broker.exe

Loads dropped DLL 2 IoCs

pid	Process
2440	712f8fe73fc9955808359aa68bb2e898c6661b4cf7de0f0dc27fd668dca17134.exe
2440	712f8fe73fc9955808359aa68bb2e898c6661b4cf7de0f0dc27fd668dca17134.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-1-5-21-2872745919-2748461613-2989606286-1000\Software\Microsoft\Windows\CurrentVersion\Run\RUNTIMEBROKHANDLER = "C:\\Windows\\system32\\Runtime Broker.exe"	712f8fe73fc9955808359aa68bb2e898c6661b4cf7de0f0dc27fd668dca17134.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000\Software\Microsoft\Windows\CurrentVersion\Run\RUNTIMEBROKHANDLER = "C:\\Windows\\system32\\Runtime Broker.exe"	Runtime Broker.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000\Software\Microsoft\Windows\CurrentVersion\Run\RUNTIMEBROKHANDLER = "C:\\Windows\\system32\\Runtime Broker.exe"	iexplore.exe

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

Web Service

T1102

flow	ioc
2	7.tcp.eu.ngrok.io
26	7.tcp.eu.ngrok.io
67	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 2560 set thread context of 2392	2560	Runtime Broker.exe	37

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

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2392	iexplore.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	2440	712f8fe73fc9955808359aa68bb2e898c6661b4cf7de0f0dc27fd668dca17134.exe
Token: SeSecurityPrivilege	2440	712f8fe73fc9955808359aa68bb2e898c6661b4cf7de0f0dc27fd668dca17134.exe
Token: SeTakeOwnershipPrivilege	2440	712f8fe73fc9955808359aa68bb2e898c6661b4cf7de0f0dc27fd668dca17134.exe
Token: SeLoadDriverPrivilege	2440	712f8fe73fc9955808359aa68bb2e898c6661b4cf7de0f0dc27fd668dca17134.exe
Token: SeSystemProfilePrivilege	2440	712f8fe73fc9955808359aa68bb2e898c6661b4cf7de0f0dc27fd668dca17134.exe
Token: SeSystemtimePrivilege	2440	712f8fe73fc9955808359aa68bb2e898c6661b4cf7de0f0dc27fd668dca17134.exe
Token: SeProfSingleProcessPrivilege	2440	712f8fe73fc9955808359aa68bb2e898c6661b4cf7de0f0dc27fd668dca17134.exe
Token: SeIncBasePriorityPrivilege	2440	712f8fe73fc9955808359aa68bb2e898c6661b4cf7de0f0dc27fd668dca17134.exe
Token: SeCreatePagefilePrivilege	2440	712f8fe73fc9955808359aa68bb2e898c6661b4cf7de0f0dc27fd668dca17134.exe
Token: SeBackupPrivilege	2440	712f8fe73fc9955808359aa68bb2e898c6661b4cf7de0f0dc27fd668dca17134.exe
Token: SeRestorePrivilege	2440	712f8fe73fc9955808359aa68bb2e898c6661b4cf7de0f0dc27fd668dca17134.exe
Token: SeShutdownPrivilege	2440	712f8fe73fc9955808359aa68bb2e898c6661b4cf7de0f0dc27fd668dca17134.exe
Token: SeDebugPrivilege	2440	712f8fe73fc9955808359aa68bb2e898c6661b4cf7de0f0dc27fd668dca17134.exe
Token: SeSystemEnvironmentPrivilege	2440	712f8fe73fc9955808359aa68bb2e898c6661b4cf7de0f0dc27fd668dca17134.exe
Token: SeChangeNotifyPrivilege	2440	712f8fe73fc9955808359aa68bb2e898c6661b4cf7de0f0dc27fd668dca17134.exe
Token: SeRemoteShutdownPrivilege	2440	712f8fe73fc9955808359aa68bb2e898c6661b4cf7de0f0dc27fd668dca17134.exe
Token: SeUndockPrivilege	2440	712f8fe73fc9955808359aa68bb2e898c6661b4cf7de0f0dc27fd668dca17134.exe
Token: SeManageVolumePrivilege	2440	712f8fe73fc9955808359aa68bb2e898c6661b4cf7de0f0dc27fd668dca17134.exe
Token: SeImpersonatePrivilege	2440	712f8fe73fc9955808359aa68bb2e898c6661b4cf7de0f0dc27fd668dca17134.exe
Token: SeCreateGlobalPrivilege	2440	712f8fe73fc9955808359aa68bb2e898c6661b4cf7de0f0dc27fd668dca17134.exe
Token: 33	2440	712f8fe73fc9955808359aa68bb2e898c6661b4cf7de0f0dc27fd668dca17134.exe
Token: 34	2440	712f8fe73fc9955808359aa68bb2e898c6661b4cf7de0f0dc27fd668dca17134.exe
Token: 35	2440	712f8fe73fc9955808359aa68bb2e898c6661b4cf7de0f0dc27fd668dca17134.exe
Token: SeIncreaseQuotaPrivilege	2560	Runtime Broker.exe
Token: SeSecurityPrivilege	2560	Runtime Broker.exe
Token: SeTakeOwnershipPrivilege	2560	Runtime Broker.exe
Token: SeLoadDriverPrivilege	2560	Runtime Broker.exe
Token: SeSystemProfilePrivilege	2560	Runtime Broker.exe
Token: SeSystemtimePrivilege	2560	Runtime Broker.exe
Token: SeProfSingleProcessPrivilege	2560	Runtime Broker.exe
Token: SeIncBasePriorityPrivilege	2560	Runtime Broker.exe
Token: SeCreatePagefilePrivilege	2560	Runtime Broker.exe
Token: SeBackupPrivilege	2560	Runtime Broker.exe
Token: SeRestorePrivilege	2560	Runtime Broker.exe
Token: SeShutdownPrivilege	2560	Runtime Broker.exe
Token: SeDebugPrivilege	2560	Runtime Broker.exe
Token: SeSystemEnvironmentPrivilege	2560	Runtime Broker.exe
Token: SeChangeNotifyPrivilege	2560	Runtime Broker.exe
Token: SeRemoteShutdownPrivilege	2560	Runtime Broker.exe
Token: SeUndockPrivilege	2560	Runtime Broker.exe
Token: SeManageVolumePrivilege	2560	Runtime Broker.exe
Token: SeImpersonatePrivilege	2560	Runtime Broker.exe
Token: SeCreateGlobalPrivilege	2560	Runtime Broker.exe
Token: 33	2560	Runtime Broker.exe
Token: 34	2560	Runtime Broker.exe
Token: 35	2560	Runtime Broker.exe
Token: SeIncreaseQuotaPrivilege	2392	iexplore.exe
Token: SeSecurityPrivilege	2392	iexplore.exe
Token: SeTakeOwnershipPrivilege	2392	iexplore.exe
Token: SeLoadDriverPrivilege	2392	iexplore.exe
Token: SeSystemProfilePrivilege	2392	iexplore.exe
Token: SeSystemtimePrivilege	2392	iexplore.exe
Token: SeProfSingleProcessPrivilege	2392	iexplore.exe
Token: SeIncBasePriorityPrivilege	2392	iexplore.exe
Token: SeCreatePagefilePrivilege	2392	iexplore.exe
Token: SeBackupPrivilege	2392	iexplore.exe
Token: SeRestorePrivilege	2392	iexplore.exe
Token: SeShutdownPrivilege	2392	iexplore.exe
Token: SeDebugPrivilege	2392	iexplore.exe
Token: SeSystemEnvironmentPrivilege	2392	iexplore.exe
Token: SeChangeNotifyPrivilege	2392	iexplore.exe
Token: SeRemoteShutdownPrivilege	2392	iexplore.exe
Token: SeUndockPrivilege	2392	iexplore.exe
Token: SeManageVolumePrivilege	2392	iexplore.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2392	iexplore.exe

Suspicious use of WriteProcessMemory 49 IoCs

description	pid	Process	procid_target
PID 2440 wrote to memory of 2164	2440	712f8fe73fc9955808359aa68bb2e898c6661b4cf7de0f0dc27fd668dca17134.exe	30
PID 2440 wrote to memory of 2164	2440	712f8fe73fc9955808359aa68bb2e898c6661b4cf7de0f0dc27fd668dca17134.exe	30
PID 2440 wrote to memory of 2164	2440	712f8fe73fc9955808359aa68bb2e898c6661b4cf7de0f0dc27fd668dca17134.exe	30
PID 2440 wrote to memory of 2164	2440	712f8fe73fc9955808359aa68bb2e898c6661b4cf7de0f0dc27fd668dca17134.exe	30
PID 2440 wrote to memory of 2316	2440	712f8fe73fc9955808359aa68bb2e898c6661b4cf7de0f0dc27fd668dca17134.exe	31
PID 2440 wrote to memory of 2316	2440	712f8fe73fc9955808359aa68bb2e898c6661b4cf7de0f0dc27fd668dca17134.exe	31
PID 2440 wrote to memory of 2316	2440	712f8fe73fc9955808359aa68bb2e898c6661b4cf7de0f0dc27fd668dca17134.exe	31
PID 2440 wrote to memory of 2316	2440	712f8fe73fc9955808359aa68bb2e898c6661b4cf7de0f0dc27fd668dca17134.exe	31
PID 2440 wrote to memory of 2560	2440	712f8fe73fc9955808359aa68bb2e898c6661b4cf7de0f0dc27fd668dca17134.exe	34
PID 2440 wrote to memory of 2560	2440	712f8fe73fc9955808359aa68bb2e898c6661b4cf7de0f0dc27fd668dca17134.exe	34
PID 2440 wrote to memory of 2560	2440	712f8fe73fc9955808359aa68bb2e898c6661b4cf7de0f0dc27fd668dca17134.exe	34
PID 2440 wrote to memory of 2560	2440	712f8fe73fc9955808359aa68bb2e898c6661b4cf7de0f0dc27fd668dca17134.exe	34
PID 2316 wrote to memory of 1748	2316	cmd.exe	35
PID 2316 wrote to memory of 1748	2316	cmd.exe	35
PID 2316 wrote to memory of 1748	2316	cmd.exe	35
PID 2316 wrote to memory of 1748	2316	cmd.exe	35
PID 2164 wrote to memory of 2100	2164	cmd.exe	36
PID 2164 wrote to memory of 2100	2164	cmd.exe	36
PID 2164 wrote to memory of 2100	2164	cmd.exe	36
PID 2164 wrote to memory of 2100	2164	cmd.exe	36
PID 2560 wrote to memory of 2392	2560	Runtime Broker.exe	37
PID 2560 wrote to memory of 2392	2560	Runtime Broker.exe	37
PID 2560 wrote to memory of 2392	2560	Runtime Broker.exe	37
PID 2560 wrote to memory of 2392	2560	Runtime Broker.exe	37
PID 2560 wrote to memory of 2392	2560	Runtime Broker.exe	37
PID 2560 wrote to memory of 2392	2560	Runtime Broker.exe	37
PID 2392 wrote to memory of 3040	2392	iexplore.exe	38
PID 2392 wrote to memory of 3040	2392	iexplore.exe	38
PID 2392 wrote to memory of 3040	2392	iexplore.exe	38
PID 2392 wrote to memory of 3040	2392	iexplore.exe	38
PID 2392 wrote to memory of 3040	2392	iexplore.exe	38
PID 2392 wrote to memory of 3040	2392	iexplore.exe	38
PID 2392 wrote to memory of 3040	2392	iexplore.exe	38
PID 2392 wrote to memory of 3040	2392	iexplore.exe	38
PID 2392 wrote to memory of 3040	2392	iexplore.exe	38
PID 2392 wrote to memory of 3040	2392	iexplore.exe	38
PID 2392 wrote to memory of 3040	2392	iexplore.exe	38
PID 2392 wrote to memory of 3040	2392	iexplore.exe	38
PID 2392 wrote to memory of 3040	2392	iexplore.exe	38
PID 2392 wrote to memory of 3040	2392	iexplore.exe	38
PID 2392 wrote to memory of 3040	2392	iexplore.exe	38
PID 2392 wrote to memory of 3040	2392	iexplore.exe	38
PID 2392 wrote to memory of 3040	2392	iexplore.exe	38
PID 2392 wrote to memory of 3040	2392	iexplore.exe	38
PID 2392 wrote to memory of 3040	2392	iexplore.exe	38
PID 2392 wrote to memory of 3040	2392	iexplore.exe	38
PID 2392 wrote to memory of 3040	2392	iexplore.exe	38
PID 2392 wrote to memory of 3040	2392	iexplore.exe	38
PID 2392 wrote to memory of 3040	2392	iexplore.exe	38

Views/modifies file attributes 1 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
1748	attrib.exe
2100	attrib.exe

C:\Users\Admin\AppData\Local\Temp\712f8fe73fc9955808359aa68bb2e898c6661b4cf7de0f0dc27fd668dca17134.exe
"C:\Users\Admin\AppData\Local\Temp\712f8fe73fc9955808359aa68bb2e898c6661b4cf7de0f0dc27fd668dca17134.exe"
1⤵
- Modifies WinLogon for persistence
- Loads dropped DLL
- 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:2440
- 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:2164
- - 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:2100
- 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:2316
- - 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:1748
- 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:2560
- - 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:2392
  - - C:\Windows\SysWOW64\notepad.exe
      notepad
      4⤵
      System Location Discovery: System Language Discovery
      PID:3040

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

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/2392-14-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2440-3-0x00000000002F0000-0x00000000002F1000-memory.dmp

Filesize
4KB

Download
memory/2440-55-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2560-12-0x0000000000370000-0x0000000000371000-memory.dmp

Filesize
4KB

Download
memory/2560-15-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/3040-16-0x0000000000080000-0x0000000000081000-memory.dmp

Filesize
4KB

Download
memory/3040-54-0x00000000001C0000-0x00000000001C1000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads