darkcomet | 1aa212eb78cdffde7c302f586ce3d2849d79914f428f56988ee759c790604bb5

Analysis

max time kernel
120s
max time network
119s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
05/09/2024, 17:55

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

cbeb96fb1e02d1f50a6d5319ec6eb460N.exe
Size

284KB
MD5

cbeb96fb1e02d1f50a6d5319ec6eb460
SHA1

d8e56d7321936f1b8aae77bb66ef16751f421dd7
SHA256

1aa212eb78cdffde7c302f586ce3d2849d79914f428f56988ee759c790604bb5
SHA512

be390a0e77480840d337b5417492eac468c43bb1c31a55e5051505c7c0315e8d1bbcd9b2163077d6a0b79393219b82159ed96cdae59354b48a5a0a9ba2c8ddbe
SSDEEP

6144:PtqYGLbcMQgKO3HTOnNRS4O23Ra/MzxDnunDbu:Ptqx5KO3zONkpwRGMNDEO

Score

10^/10

darkcomet discovery evasion persistence rat trojan upx

Malware Config

Signatures

Darkcomet
DarkComet is a remote access trojan (RAT) developed by Jean-Pierre Lesueur.
trojan rat 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:\\JavaRE\\Update.exe"	cbeb96fb1e02d1f50a6d5319ec6eb460N.exe

Sets file to hidden 1 TTPs 1 IoCs

Modifies file attributes to stop it showing in Explorer etc.

evasion

Hidden Files and Directories

T1564.001

pid	Process
3996	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-1-5-21-2170637797-568393320-3232933035-1000\Control Panel\International\Geo\Nation	cbeb96fb1e02d1f50a6d5319ec6eb460N.exe

Executes dropped EXE 2 IoCs

pid	Process
3548	Update.exe
2608	Update.exe

UPX packed file 26 IoCs

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

upx

resource	yara_rule
behavioral2/memory/396-3-0x0000000000400000-0x00000000004B9000-memory.dmp	upx
behavioral2/memory/396-4-0x0000000000400000-0x00000000004B9000-memory.dmp	upx
behavioral2/memory/396-5-0x0000000000400000-0x00000000004B9000-memory.dmp	upx
behavioral2/memory/396-7-0x0000000000400000-0x00000000004B9000-memory.dmp	upx
behavioral2/memory/396-6-0x0000000000400000-0x00000000004B9000-memory.dmp	upx
behavioral2/memory/396-8-0x0000000000400000-0x00000000004B9000-memory.dmp	upx
behavioral2/memory/396-71-0x0000000000400000-0x00000000004B9000-memory.dmp	upx
behavioral2/memory/2608-76-0x0000000000400000-0x00000000004B9000-memory.dmp	upx
behavioral2/memory/2608-77-0x0000000000400000-0x00000000004B9000-memory.dmp	upx
behavioral2/memory/2608-78-0x0000000000400000-0x00000000004B9000-memory.dmp	upx
behavioral2/memory/2608-82-0x0000000000400000-0x00000000004B9000-memory.dmp	upx
behavioral2/memory/2608-83-0x0000000000400000-0x00000000004B9000-memory.dmp	upx
behavioral2/memory/2608-81-0x0000000000400000-0x00000000004B9000-memory.dmp	upx
behavioral2/memory/2608-80-0x0000000000400000-0x00000000004B9000-memory.dmp	upx
behavioral2/memory/2608-79-0x0000000000400000-0x00000000004B9000-memory.dmp	upx
behavioral2/memory/2608-85-0x0000000000400000-0x00000000004B9000-memory.dmp	upx
behavioral2/memory/2608-84-0x0000000000400000-0x00000000004B9000-memory.dmp	upx
behavioral2/memory/2608-86-0x0000000000400000-0x00000000004B9000-memory.dmp	upx
behavioral2/memory/2608-89-0x0000000000400000-0x00000000004B9000-memory.dmp	upx
behavioral2/memory/2608-90-0x0000000000400000-0x00000000004B9000-memory.dmp	upx
behavioral2/memory/2608-91-0x0000000000400000-0x00000000004B9000-memory.dmp	upx
behavioral2/memory/2608-92-0x0000000000400000-0x00000000004B9000-memory.dmp	upx
behavioral2/memory/2608-93-0x0000000000400000-0x00000000004B9000-memory.dmp	upx
behavioral2/memory/2608-94-0x0000000000400000-0x00000000004B9000-memory.dmp	upx
behavioral2/memory/2608-95-0x0000000000400000-0x00000000004B9000-memory.dmp	upx
behavioral2/memory/2608-96-0x0000000000400000-0x00000000004B9000-memory.dmp	upx

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-1-5-21-2170637797-568393320-3232933035-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Java Updater = "C:\\JavaRE\\Update.exe"	cbeb96fb1e02d1f50a6d5319ec6eb460N.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2170637797-568393320-3232933035-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Java Updater = "C:\\JavaRE\\Update.exe"	Update.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1048 set thread context of 396	1048	cbeb96fb1e02d1f50a6d5319ec6eb460N.exe	91
PID 3548 set thread context of 2608	3548	Update.exe	100

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	Update.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cbeb96fb1e02d1f50a6d5319ec6eb460N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cbeb96fb1e02d1f50a6d5319ec6eb460N.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	Update.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
2340	cmd.exe
680	PING.EXE

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	cbeb96fb1e02d1f50a6d5319ec6eb460N.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
680	PING.EXE

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2608	Update.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	396	cbeb96fb1e02d1f50a6d5319ec6eb460N.exe
Token: SeSecurityPrivilege	396	cbeb96fb1e02d1f50a6d5319ec6eb460N.exe
Token: SeTakeOwnershipPrivilege	396	cbeb96fb1e02d1f50a6d5319ec6eb460N.exe
Token: SeLoadDriverPrivilege	396	cbeb96fb1e02d1f50a6d5319ec6eb460N.exe
Token: SeSystemProfilePrivilege	396	cbeb96fb1e02d1f50a6d5319ec6eb460N.exe
Token: SeSystemtimePrivilege	396	cbeb96fb1e02d1f50a6d5319ec6eb460N.exe
Token: SeProfSingleProcessPrivilege	396	cbeb96fb1e02d1f50a6d5319ec6eb460N.exe
Token: SeIncBasePriorityPrivilege	396	cbeb96fb1e02d1f50a6d5319ec6eb460N.exe
Token: SeCreatePagefilePrivilege	396	cbeb96fb1e02d1f50a6d5319ec6eb460N.exe
Token: SeBackupPrivilege	396	cbeb96fb1e02d1f50a6d5319ec6eb460N.exe
Token: SeRestorePrivilege	396	cbeb96fb1e02d1f50a6d5319ec6eb460N.exe
Token: SeShutdownPrivilege	396	cbeb96fb1e02d1f50a6d5319ec6eb460N.exe
Token: SeDebugPrivilege	396	cbeb96fb1e02d1f50a6d5319ec6eb460N.exe
Token: SeSystemEnvironmentPrivilege	396	cbeb96fb1e02d1f50a6d5319ec6eb460N.exe
Token: SeChangeNotifyPrivilege	396	cbeb96fb1e02d1f50a6d5319ec6eb460N.exe
Token: SeRemoteShutdownPrivilege	396	cbeb96fb1e02d1f50a6d5319ec6eb460N.exe
Token: SeUndockPrivilege	396	cbeb96fb1e02d1f50a6d5319ec6eb460N.exe
Token: SeManageVolumePrivilege	396	cbeb96fb1e02d1f50a6d5319ec6eb460N.exe
Token: SeImpersonatePrivilege	396	cbeb96fb1e02d1f50a6d5319ec6eb460N.exe
Token: SeCreateGlobalPrivilege	396	cbeb96fb1e02d1f50a6d5319ec6eb460N.exe
Token: 33	396	cbeb96fb1e02d1f50a6d5319ec6eb460N.exe
Token: 34	396	cbeb96fb1e02d1f50a6d5319ec6eb460N.exe
Token: 35	396	cbeb96fb1e02d1f50a6d5319ec6eb460N.exe
Token: 36	396	cbeb96fb1e02d1f50a6d5319ec6eb460N.exe
Token: SeIncreaseQuotaPrivilege	2608	Update.exe
Token: SeSecurityPrivilege	2608	Update.exe
Token: SeTakeOwnershipPrivilege	2608	Update.exe
Token: SeLoadDriverPrivilege	2608	Update.exe
Token: SeSystemProfilePrivilege	2608	Update.exe
Token: SeSystemtimePrivilege	2608	Update.exe
Token: SeProfSingleProcessPrivilege	2608	Update.exe
Token: SeIncBasePriorityPrivilege	2608	Update.exe
Token: SeCreatePagefilePrivilege	2608	Update.exe
Token: SeBackupPrivilege	2608	Update.exe
Token: SeRestorePrivilege	2608	Update.exe
Token: SeShutdownPrivilege	2608	Update.exe
Token: SeDebugPrivilege	2608	Update.exe
Token: SeSystemEnvironmentPrivilege	2608	Update.exe
Token: SeChangeNotifyPrivilege	2608	Update.exe
Token: SeRemoteShutdownPrivilege	2608	Update.exe
Token: SeUndockPrivilege	2608	Update.exe
Token: SeManageVolumePrivilege	2608	Update.exe
Token: SeImpersonatePrivilege	2608	Update.exe
Token: SeCreateGlobalPrivilege	2608	Update.exe
Token: 33	2608	Update.exe
Token: 34	2608	Update.exe
Token: 35	2608	Update.exe
Token: 36	2608	Update.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
1048	cbeb96fb1e02d1f50a6d5319ec6eb460N.exe
3548	Update.exe
2608	Update.exe

Suspicious use of WriteProcessMemory 31 IoCs

description	pid	Process	procid_target
PID 1048 wrote to memory of 396	1048	cbeb96fb1e02d1f50a6d5319ec6eb460N.exe	91
PID 1048 wrote to memory of 396	1048	cbeb96fb1e02d1f50a6d5319ec6eb460N.exe	91
PID 1048 wrote to memory of 396	1048	cbeb96fb1e02d1f50a6d5319ec6eb460N.exe	91
PID 1048 wrote to memory of 396	1048	cbeb96fb1e02d1f50a6d5319ec6eb460N.exe	91
PID 1048 wrote to memory of 396	1048	cbeb96fb1e02d1f50a6d5319ec6eb460N.exe	91
PID 1048 wrote to memory of 396	1048	cbeb96fb1e02d1f50a6d5319ec6eb460N.exe	91
PID 1048 wrote to memory of 396	1048	cbeb96fb1e02d1f50a6d5319ec6eb460N.exe	91
PID 1048 wrote to memory of 396	1048	cbeb96fb1e02d1f50a6d5319ec6eb460N.exe	91
PID 396 wrote to memory of 2072	396	cbeb96fb1e02d1f50a6d5319ec6eb460N.exe	93
PID 396 wrote to memory of 2072	396	cbeb96fb1e02d1f50a6d5319ec6eb460N.exe	93
PID 396 wrote to memory of 2072	396	cbeb96fb1e02d1f50a6d5319ec6eb460N.exe	93
PID 2072 wrote to memory of 3996	2072	cmd.exe	96
PID 2072 wrote to memory of 3996	2072	cmd.exe	96
PID 2072 wrote to memory of 3996	2072	cmd.exe	96
PID 396 wrote to memory of 3548	396	cbeb96fb1e02d1f50a6d5319ec6eb460N.exe	97
PID 396 wrote to memory of 3548	396	cbeb96fb1e02d1f50a6d5319ec6eb460N.exe	97
PID 396 wrote to memory of 3548	396	cbeb96fb1e02d1f50a6d5319ec6eb460N.exe	97
PID 396 wrote to memory of 2340	396	cbeb96fb1e02d1f50a6d5319ec6eb460N.exe	98
PID 396 wrote to memory of 2340	396	cbeb96fb1e02d1f50a6d5319ec6eb460N.exe	98
PID 396 wrote to memory of 2340	396	cbeb96fb1e02d1f50a6d5319ec6eb460N.exe	98
PID 3548 wrote to memory of 2608	3548	Update.exe	100
PID 3548 wrote to memory of 2608	3548	Update.exe	100
PID 3548 wrote to memory of 2608	3548	Update.exe	100
PID 3548 wrote to memory of 2608	3548	Update.exe	100
PID 3548 wrote to memory of 2608	3548	Update.exe	100
PID 3548 wrote to memory of 2608	3548	Update.exe	100
PID 3548 wrote to memory of 2608	3548	Update.exe	100
PID 3548 wrote to memory of 2608	3548	Update.exe	100
PID 2340 wrote to memory of 680	2340	cmd.exe	101
PID 2340 wrote to memory of 680	2340	cmd.exe	101
PID 2340 wrote to memory of 680	2340	cmd.exe	101

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
3996	attrib.exe

C:\Users\Admin\AppData\Local\Temp\cbeb96fb1e02d1f50a6d5319ec6eb460N.exe
"C:\Users\Admin\AppData\Local\Temp\cbeb96fb1e02d1f50a6d5319ec6eb460N.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1048
- C:\Users\Admin\AppData\Local\Temp\cbeb96fb1e02d1f50a6d5319ec6eb460N.exe
  "C:\Users\Admin\AppData\Local\Temp\cbeb96fb1e02d1f50a6d5319ec6eb460N.exe"
  2⤵
  - Modifies WinLogon for persistence
  - Checks computer location settings
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:396
- - 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:2072
  - - 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:3996
- - C:\JavaRE\Update.exe
    "C:\JavaRE\Update.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:3548
  - - C:\JavaRE\Update.exe
      "C:\JavaRE\Update.exe"
      4⤵
      Executes dropped EXE
      Adds Run key to start application
      System Location Discovery: System Language Discovery
      Suspicious behavior: GetForegroundWindowSpam
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of SetWindowsHookEx
      PID:2608
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /k ping 127.0.0.1 -n 5 > NUL&del "C:\Users\Admin\AppData\Local\Temp\cbeb96fb1e02d1f50a6d5319ec6eb460N.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    - System Network Configuration Discovery: Internet Connection Discovery
    - Suspicious use of WriteProcessMemory
    PID:2340
  - - 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:680

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=1288,i,7447299413640964517,4240724842020506306,262144 --variations-seed-version --mojo-platform-channel-handle=3944 /prefetch:8
1⤵
PID:4464

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

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\JavaRE\Update.exe

Filesize
284KB

MD5
cbeb96fb1e02d1f50a6d5319ec6eb460

SHA1
d8e56d7321936f1b8aae77bb66ef16751f421dd7

SHA256
1aa212eb78cdffde7c302f586ce3d2849d79914f428f56988ee759c790604bb5

SHA512
be390a0e77480840d337b5417492eac468c43bb1c31a55e5051505c7c0315e8d1bbcd9b2163077d6a0b79393219b82159ed96cdae59354b48a5a0a9ba2c8ddbe

Download Submit
memory/396-71-0x0000000000400000-0x00000000004B9000-memory.dmp

Filesize
740KB

Download
memory/396-3-0x0000000000400000-0x00000000004B9000-memory.dmp

Filesize
740KB

Download
memory/396-4-0x0000000000400000-0x00000000004B9000-memory.dmp

Filesize
740KB

Download
memory/396-5-0x0000000000400000-0x00000000004B9000-memory.dmp

Filesize
740KB

Download
memory/396-7-0x0000000000400000-0x00000000004B9000-memory.dmp

Filesize
740KB

Download
memory/396-6-0x0000000000400000-0x00000000004B9000-memory.dmp

Filesize
740KB

Download
memory/396-8-0x0000000000400000-0x00000000004B9000-memory.dmp

Filesize
740KB

Download
memory/1048-87-0x0000000000400000-0x0000000000449000-memory.dmp

Filesize
292KB

Download
memory/1048-0-0x0000000000400000-0x0000000000449000-memory.dmp

Filesize
292KB

Download
memory/2608-84-0x0000000000400000-0x00000000004B9000-memory.dmp

Filesize
740KB

Download
memory/2608-76-0x0000000000400000-0x00000000004B9000-memory.dmp

Filesize
740KB

Download
memory/2608-78-0x0000000000400000-0x00000000004B9000-memory.dmp

Filesize
740KB

Download
memory/2608-82-0x0000000000400000-0x00000000004B9000-memory.dmp

Filesize
740KB

Download
memory/2608-83-0x0000000000400000-0x00000000004B9000-memory.dmp

Filesize
740KB

Download
memory/2608-81-0x0000000000400000-0x00000000004B9000-memory.dmp

Filesize
740KB

Download
memory/2608-80-0x0000000000400000-0x00000000004B9000-memory.dmp

Filesize
740KB

Download
memory/2608-79-0x0000000000400000-0x00000000004B9000-memory.dmp

Filesize
740KB

Download
memory/2608-85-0x0000000000400000-0x00000000004B9000-memory.dmp

Filesize
740KB

Download
memory/2608-96-0x0000000000400000-0x00000000004B9000-memory.dmp

Filesize
740KB

Download
memory/2608-77-0x0000000000400000-0x00000000004B9000-memory.dmp

Filesize
740KB

Download
memory/2608-95-0x0000000000400000-0x00000000004B9000-memory.dmp

Filesize
740KB

Download
memory/2608-86-0x0000000000400000-0x00000000004B9000-memory.dmp

Filesize
740KB

Download
memory/2608-89-0x0000000000400000-0x00000000004B9000-memory.dmp

Filesize
740KB

Download
memory/2608-90-0x0000000000400000-0x00000000004B9000-memory.dmp

Filesize
740KB

Download
memory/2608-91-0x0000000000400000-0x00000000004B9000-memory.dmp

Filesize
740KB

Download
memory/2608-92-0x0000000000400000-0x00000000004B9000-memory.dmp

Filesize
740KB

Download
memory/2608-93-0x0000000000400000-0x00000000004B9000-memory.dmp

Filesize
740KB

Download
memory/2608-94-0x0000000000400000-0x00000000004B9000-memory.dmp

Filesize
740KB

Download
memory/3548-88-0x0000000000400000-0x0000000000449000-memory.dmp

Filesize
292KB

Download
memory/3548-69-0x0000000000400000-0x0000000000449000-memory.dmp

Filesize
292KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads