darkcomet | dc51e624a940993ca435cc5f136452d515f5b10261ba888e95cc4c9fc9ea09dc

Analysis

max time kernel
150s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
28-11-2024 08:08

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

ab9d330d59c793f57b9bc43926338d55_JaffaCakes118.exe
Size

2.1MB
MD5

ab9d330d59c793f57b9bc43926338d55
SHA1

57e4d5ed3c7efa25a0e51815fb889f4216cd4f83
SHA256

dc51e624a940993ca435cc5f136452d515f5b10261ba888e95cc4c9fc9ea09dc
SHA512

162dde24e4ee17a5362ccfd6f078701d407e0206478e71464a752dcae43c7cb3a45a442f6d029df01214a417b78e2e870e80deac89ea2ac275124aee9ea4cabb
SSDEEP

49152:Jw7kqoBfCErdhGdCsorrhBPKiMK+AzqptKJ96Z+boUlExv5JHzV+VYqngt3zvwHP:JpdB6ErdQYXhBBXSQ93hlExvLzYVYqnb

Score

10^/10

darkcomet discovery persistence rat trojan upx

Malware Config

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:\\Windupdt\\winupdate.exe"	ab9d330d59c793f57b9bc43926338d55_JaffaCakes118.exe

Checks computer location settings 2 TTPs 3 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-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	ab9d330d59c793f57b9bc43926338d55_JaffaCakes118.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	WINRAR_4.10_X86_ITA.EXE
Key value queried	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	WINRAR_4.10_X86_ITA.EXE

Executes dropped EXE 5 IoCs

pid	Process
668	WINRAR_4.10_X86_ITA.EXE
648	WRar410it.exe
3136	winupdate.exe
2764	WINRAR_4.10_X86_ITA.EXE
3888	WRar410it.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Windupdt\\winupdate.exe"	ab9d330d59c793f57b9bc43926338d55_JaffaCakes118.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3136 set thread context of 3572	3136	winupdate.exe	85

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1788-0-0x0000000000400000-0x0000000000691000-memory.dmp	upx
behavioral2/files/0x0009000000023c94-25.dat	upx
behavioral2/memory/1788-54-0x0000000000400000-0x0000000000691000-memory.dmp	upx
behavioral2/memory/3136-56-0x0000000000400000-0x0000000000691000-memory.dmp	upx
behavioral2/memory/3572-55-0x0000000000400000-0x0000000000691000-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 7 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	WINRAR_4.10_X86_ITA.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	WRar410it.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winupdate.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	iexplore.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	WINRAR_4.10_X86_ITA.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	WRar410it.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ab9d330d59c793f57b9bc43926338d55_JaffaCakes118.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	ab9d330d59c793f57b9bc43926338d55_JaffaCakes118.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	1788	ab9d330d59c793f57b9bc43926338d55_JaffaCakes118.exe
Token: SeSecurityPrivilege	1788	ab9d330d59c793f57b9bc43926338d55_JaffaCakes118.exe
Token: SeTakeOwnershipPrivilege	1788	ab9d330d59c793f57b9bc43926338d55_JaffaCakes118.exe
Token: SeLoadDriverPrivilege	1788	ab9d330d59c793f57b9bc43926338d55_JaffaCakes118.exe
Token: SeSystemProfilePrivilege	1788	ab9d330d59c793f57b9bc43926338d55_JaffaCakes118.exe
Token: SeSystemtimePrivilege	1788	ab9d330d59c793f57b9bc43926338d55_JaffaCakes118.exe
Token: SeProfSingleProcessPrivilege	1788	ab9d330d59c793f57b9bc43926338d55_JaffaCakes118.exe
Token: SeIncBasePriorityPrivilege	1788	ab9d330d59c793f57b9bc43926338d55_JaffaCakes118.exe
Token: SeCreatePagefilePrivilege	1788	ab9d330d59c793f57b9bc43926338d55_JaffaCakes118.exe
Token: SeBackupPrivilege	1788	ab9d330d59c793f57b9bc43926338d55_JaffaCakes118.exe
Token: SeRestorePrivilege	1788	ab9d330d59c793f57b9bc43926338d55_JaffaCakes118.exe
Token: SeShutdownPrivilege	1788	ab9d330d59c793f57b9bc43926338d55_JaffaCakes118.exe
Token: SeDebugPrivilege	1788	ab9d330d59c793f57b9bc43926338d55_JaffaCakes118.exe
Token: SeSystemEnvironmentPrivilege	1788	ab9d330d59c793f57b9bc43926338d55_JaffaCakes118.exe
Token: SeChangeNotifyPrivilege	1788	ab9d330d59c793f57b9bc43926338d55_JaffaCakes118.exe
Token: SeRemoteShutdownPrivilege	1788	ab9d330d59c793f57b9bc43926338d55_JaffaCakes118.exe
Token: SeUndockPrivilege	1788	ab9d330d59c793f57b9bc43926338d55_JaffaCakes118.exe
Token: SeManageVolumePrivilege	1788	ab9d330d59c793f57b9bc43926338d55_JaffaCakes118.exe
Token: SeImpersonatePrivilege	1788	ab9d330d59c793f57b9bc43926338d55_JaffaCakes118.exe
Token: SeCreateGlobalPrivilege	1788	ab9d330d59c793f57b9bc43926338d55_JaffaCakes118.exe
Token: 33	1788	ab9d330d59c793f57b9bc43926338d55_JaffaCakes118.exe
Token: 34	1788	ab9d330d59c793f57b9bc43926338d55_JaffaCakes118.exe
Token: 35	1788	ab9d330d59c793f57b9bc43926338d55_JaffaCakes118.exe
Token: 36	1788	ab9d330d59c793f57b9bc43926338d55_JaffaCakes118.exe
Token: SeIncreaseQuotaPrivilege	3136	winupdate.exe
Token: SeSecurityPrivilege	3136	winupdate.exe
Token: SeTakeOwnershipPrivilege	3136	winupdate.exe
Token: SeLoadDriverPrivilege	3136	winupdate.exe
Token: SeSystemProfilePrivilege	3136	winupdate.exe
Token: SeSystemtimePrivilege	3136	winupdate.exe
Token: SeProfSingleProcessPrivilege	3136	winupdate.exe
Token: SeIncBasePriorityPrivilege	3136	winupdate.exe
Token: SeCreatePagefilePrivilege	3136	winupdate.exe
Token: SeBackupPrivilege	3136	winupdate.exe
Token: SeRestorePrivilege	3136	winupdate.exe
Token: SeShutdownPrivilege	3136	winupdate.exe
Token: SeDebugPrivilege	3136	winupdate.exe
Token: SeSystemEnvironmentPrivilege	3136	winupdate.exe
Token: SeChangeNotifyPrivilege	3136	winupdate.exe
Token: SeRemoteShutdownPrivilege	3136	winupdate.exe
Token: SeUndockPrivilege	3136	winupdate.exe
Token: SeManageVolumePrivilege	3136	winupdate.exe
Token: SeImpersonatePrivilege	3136	winupdate.exe
Token: SeCreateGlobalPrivilege	3136	winupdate.exe
Token: 33	3136	winupdate.exe
Token: 34	3136	winupdate.exe
Token: 35	3136	winupdate.exe
Token: 36	3136	winupdate.exe
Token: SeIncreaseQuotaPrivilege	3572	iexplore.exe
Token: SeSecurityPrivilege	3572	iexplore.exe
Token: SeTakeOwnershipPrivilege	3572	iexplore.exe
Token: SeLoadDriverPrivilege	3572	iexplore.exe
Token: SeSystemProfilePrivilege	3572	iexplore.exe
Token: SeSystemtimePrivilege	3572	iexplore.exe
Token: SeProfSingleProcessPrivilege	3572	iexplore.exe
Token: SeIncBasePriorityPrivilege	3572	iexplore.exe
Token: SeCreatePagefilePrivilege	3572	iexplore.exe
Token: SeBackupPrivilege	3572	iexplore.exe
Token: SeRestorePrivilege	3572	iexplore.exe
Token: SeShutdownPrivilege	3572	iexplore.exe
Token: SeDebugPrivilege	3572	iexplore.exe
Token: SeSystemEnvironmentPrivilege	3572	iexplore.exe
Token: SeChangeNotifyPrivilege	3572	iexplore.exe
Token: SeRemoteShutdownPrivilege	3572	iexplore.exe

Suspicious use of SetWindowsHookEx 5 IoCs

pid	Process
648	WRar410it.exe
648	WRar410it.exe
3572	iexplore.exe
3888	WRar410it.exe
3888	WRar410it.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 1788 wrote to memory of 668	1788	ab9d330d59c793f57b9bc43926338d55_JaffaCakes118.exe	82
PID 1788 wrote to memory of 668	1788	ab9d330d59c793f57b9bc43926338d55_JaffaCakes118.exe	82
PID 1788 wrote to memory of 668	1788	ab9d330d59c793f57b9bc43926338d55_JaffaCakes118.exe	82
PID 668 wrote to memory of 648	668	WINRAR_4.10_X86_ITA.EXE	83
PID 668 wrote to memory of 648	668	WINRAR_4.10_X86_ITA.EXE	83
PID 668 wrote to memory of 648	668	WINRAR_4.10_X86_ITA.EXE	83
PID 1788 wrote to memory of 3136	1788	ab9d330d59c793f57b9bc43926338d55_JaffaCakes118.exe	84
PID 1788 wrote to memory of 3136	1788	ab9d330d59c793f57b9bc43926338d55_JaffaCakes118.exe	84
PID 1788 wrote to memory of 3136	1788	ab9d330d59c793f57b9bc43926338d55_JaffaCakes118.exe	84
PID 3136 wrote to memory of 3572	3136	winupdate.exe	85
PID 3136 wrote to memory of 3572	3136	winupdate.exe	85
PID 3136 wrote to memory of 3572	3136	winupdate.exe	85
PID 3136 wrote to memory of 3572	3136	winupdate.exe	85
PID 3136 wrote to memory of 3572	3136	winupdate.exe	85
PID 3572 wrote to memory of 2764	3572	iexplore.exe	86
PID 3572 wrote to memory of 2764	3572	iexplore.exe	86
PID 3572 wrote to memory of 2764	3572	iexplore.exe	86
PID 2764 wrote to memory of 3888	2764	WINRAR_4.10_X86_ITA.EXE	87
PID 2764 wrote to memory of 3888	2764	WINRAR_4.10_X86_ITA.EXE	87
PID 2764 wrote to memory of 3888	2764	WINRAR_4.10_X86_ITA.EXE	87

C:\Users\Admin\AppData\Local\Temp\ab9d330d59c793f57b9bc43926338d55_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\ab9d330d59c793f57b9bc43926338d55_JaffaCakes118.exe"
1⤵
- 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:1788
- C:\Users\Admin\AppData\Local\Temp\WINRAR_4.10_X86_ITA.EXE
  "C:\Users\Admin\AppData\Local\Temp\WINRAR_4.10_X86_ITA.EXE"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:668
- - C:\Users\Admin\AppData\Local\Temp\RarSFX0\WRar410it.exe
    "C:\Users\Admin\AppData\Local\Temp\RarSFX0\WRar410it.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    PID:648
- C:\Windupdt\winupdate.exe
  "C:\Windupdt\winupdate.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3136
- - C:\Program Files (x86)\Internet Explorer\iexplore.exe
    "C:\Program Files (x86)\Internet Explorer\iexplore.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:3572
  - - C:\Users\Admin\AppData\Local\Temp\WINRAR_4.10_X86_ITA.EXE
      "C:\Users\Admin\AppData\Local\Temp\WINRAR_4.10_X86_ITA.EXE"
      4⤵
      Checks computer location settings
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      Suspicious use of WriteProcessMemory
      PID:2764
    - - C:\Users\Admin\AppData\Local\Temp\RarSFX1\WRar410it.exe
        
        "C:\Users\Admin\AppData\Local\Temp\RarSFX1\WRar410it.exe"
        5⤵
        Executes dropped EXE
        System Location Discovery: System Language Discovery
        Suspicious use of SetWindowsHookEx
        
        PID:3888

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

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

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\RarSFX0\WRar410it.exe

Filesize
1.5MB

MD5
824ceb3a563d6584ca70f27036b191d8

SHA1
7b0277e0ac86423499cfd5137c79e6413c3aab57

SHA256
707b56a94aba4157317c37d7a0e5970723cc7c285c0a9ce95a9937a8487bcc15

SHA512
2cf734e4c05b58c955dbf8541986694c720b01e314ecbc7bb882d6fbb17d17e5a41bee49bc676bd3a74f65207d56a3068d4204523c6c6621086a32abec98c3fc

Download Submit
C:\Users\Admin\AppData\Local\Temp\WINRAR_4.10_X86_ITA.EXE

Filesize
1.7MB

MD5
c72a0f6167849686935800a12492ff79

SHA1
16383a19130fa438ad9dabb2df9b293eace71128

SHA256
9e342367f7da0548105920ac3b2ac2c649e3a5ebf9214734e661358603c2a642

SHA512
f913869141e0e2c3a9864705ed806de5464b3a95be14a2c482df49a5fe001ed8f3d5c2adc21208d861645c0c9197ddd4632bdfabd0140c6bd97f0b5b1cd9c147

Download Submit
C:\Windupdt\winupdate.exe

Filesize
2.1MB

MD5
ab9d330d59c793f57b9bc43926338d55

SHA1
57e4d5ed3c7efa25a0e51815fb889f4216cd4f83

SHA256
dc51e624a940993ca435cc5f136452d515f5b10261ba888e95cc4c9fc9ea09dc

SHA512
162dde24e4ee17a5362ccfd6f078701d407e0206478e71464a752dcae43c7cb3a45a442f6d029df01214a417b78e2e870e80deac89ea2ac275124aee9ea4cabb

Download Submit
memory/1788-0-0x0000000000400000-0x0000000000691000-memory.dmp

Filesize
2.6MB

Download
memory/1788-1-0x0000000000B60000-0x0000000000B61000-memory.dmp

Filesize
4KB

Download
memory/1788-54-0x0000000000400000-0x0000000000691000-memory.dmp

Filesize
2.6MB

Download
memory/3136-56-0x0000000000400000-0x0000000000691000-memory.dmp

Filesize
2.6MB

Download
memory/3572-55-0x0000000000400000-0x0000000000691000-memory.dmp

Filesize
2.6MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads