darkcomet | 4557cc81af751f37d40ce6b0ccbe9b89432b8f196c5ead7a471285758de4a162

General

Target
JaffaCakes118_f749b792d11c08bd02c78a91e148ff77.exe
Size 668KB
Sample250214-nj679strfr
SHA256 4557cc81af751f37d40ce6b0ccbe9b89432b8f196c5ead7a471285758de4a162
MD5 f749b792d11c08bd02c78a91e148ff77
SHA1 0b13a488780af2a243958d699b0afbe3a56e5652
SHA512 2b515ba69571ab21a080a7890c8b4f2fc3954e2500d7b70f06157d94d4b99d467a6cb6466d61ddcef53c0b0af0344d8e750528fe155246339f378d77c8be0e3f
SSDEEP 12288:i5LQpVD9jNtMpJBfpVc7nsd408QIuhoPopzYDpyL9M6rUUG0quDs:i5LibtMBB+DsK6ogpE4FIUWn
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

darkcomet guest16 discovery persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

127.0.0.1:1604

Mutex

DC_MUTEX-F54S21D

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
Qgp#txPkRK8$
install
true
offline_keylogger
true
persistence
false
reg_key
MicroUpdate

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:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	vbc.exe

Downloads MZ/PE file 1 IoCs

flow	pid	Process
36	3252	Process not Found

Executes dropped EXE 1 IoCs

pid	Process
408	msdcsc.exe

Uses the VBS compiler for execution 1 TTPs

Command and Scripting Interpreter
T1059

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-1-5-21-2656314083-4170277356-267438488-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	vbc.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2304 set thread context of 1736	2304	JaffaCakes118_f749b792d11c08bd02c78a91e148ff77.exe	86

System Location Discovery: System Language Discovery 1 TTPs 6 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	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	msdcsc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	MicrosoftEdgeUpdate.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_f749b792d11c08bd02c78a91e148ff77.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vbc.exe

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 3 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
2240	cmd.exe
4460	PING.EXE
1956	MicrosoftEdgeUpdate.exe

Modifies registry class 1 IoCs

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

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
4460	PING.EXE

Suspicious use of AdjustPrivilegeToken 24 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	1736	vbc.exe
Token: SeSecurityPrivilege	1736	vbc.exe
Token: SeTakeOwnershipPrivilege	1736	vbc.exe
Token: SeLoadDriverPrivilege	1736	vbc.exe
Token: SeSystemProfilePrivilege	1736	vbc.exe
Token: SeSystemtimePrivilege	1736	vbc.exe
Token: SeProfSingleProcessPrivilege	1736	vbc.exe
Token: SeIncBasePriorityPrivilege	1736	vbc.exe
Token: SeCreatePagefilePrivilege	1736	vbc.exe
Token: SeBackupPrivilege	1736	vbc.exe
Token: SeRestorePrivilege	1736	vbc.exe
Token: SeShutdownPrivilege	1736	vbc.exe
Token: SeDebugPrivilege	1736	vbc.exe
Token: SeSystemEnvironmentPrivilege	1736	vbc.exe
Token: SeChangeNotifyPrivilege	1736	vbc.exe
Token: SeRemoteShutdownPrivilege	1736	vbc.exe
Token: SeUndockPrivilege	1736	vbc.exe
Token: SeManageVolumePrivilege	1736	vbc.exe
Token: SeImpersonatePrivilege	1736	vbc.exe
Token: SeCreateGlobalPrivilege	1736	vbc.exe
Token: 33	1736	vbc.exe
Token: 34	1736	vbc.exe
Token: 35	1736	vbc.exe
Token: 36	1736	vbc.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2304 wrote to memory of 1736	2304	JaffaCakes118_f749b792d11c08bd02c78a91e148ff77.exe	86
PID 2304 wrote to memory of 1736	2304	JaffaCakes118_f749b792d11c08bd02c78a91e148ff77.exe	86
PID 2304 wrote to memory of 1736	2304	JaffaCakes118_f749b792d11c08bd02c78a91e148ff77.exe	86
PID 2304 wrote to memory of 1736	2304	JaffaCakes118_f749b792d11c08bd02c78a91e148ff77.exe	86
PID 2304 wrote to memory of 1736	2304	JaffaCakes118_f749b792d11c08bd02c78a91e148ff77.exe	86
PID 2304 wrote to memory of 1736	2304	JaffaCakes118_f749b792d11c08bd02c78a91e148ff77.exe	86
PID 2304 wrote to memory of 1736	2304	JaffaCakes118_f749b792d11c08bd02c78a91e148ff77.exe	86
PID 2304 wrote to memory of 1736	2304	JaffaCakes118_f749b792d11c08bd02c78a91e148ff77.exe	86
PID 2304 wrote to memory of 1736	2304	JaffaCakes118_f749b792d11c08bd02c78a91e148ff77.exe	86
PID 2304 wrote to memory of 1736	2304	JaffaCakes118_f749b792d11c08bd02c78a91e148ff77.exe	86
PID 2304 wrote to memory of 1736	2304	JaffaCakes118_f749b792d11c08bd02c78a91e148ff77.exe	86
PID 2304 wrote to memory of 1736	2304	JaffaCakes118_f749b792d11c08bd02c78a91e148ff77.exe	86
PID 2304 wrote to memory of 1736	2304	JaffaCakes118_f749b792d11c08bd02c78a91e148ff77.exe	86
PID 2304 wrote to memory of 1736	2304	JaffaCakes118_f749b792d11c08bd02c78a91e148ff77.exe	86
PID 1736 wrote to memory of 2240	1736	vbc.exe	88
PID 1736 wrote to memory of 2240	1736	vbc.exe	88
PID 1736 wrote to memory of 2240	1736	vbc.exe	88
PID 2240 wrote to memory of 4460	2240	cmd.exe	90
PID 2240 wrote to memory of 4460	2240	cmd.exe	90
PID 2240 wrote to memory of 4460	2240	cmd.exe	90
PID 1736 wrote to memory of 408	1736	vbc.exe	92
PID 1736 wrote to memory of 408	1736	vbc.exe	92
PID 1736 wrote to memory of 408	1736	vbc.exe	92

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f749b792d11c08bd02c78a91e148ff77.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f749b792d11c08bd02c78a91e148ff77.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2304
- 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
  - Modifies registry class
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1736
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /k ping 127.0.0.1 -n 4 && del "C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    - System Network Configuration Discovery: Internet Connection Discovery
    - Suspicious use of WriteProcessMemory
    PID:2240
  - - C:\Windows\SysWOW64\PING.EXE
      ping 127.0.0.1 -n 4
      4⤵
      System Location Discovery: System Language Discovery
      System Network Configuration Discovery: Internet Connection Discovery
      Runs ping.exe
      PID:4460
- - C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
    "C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:408

C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe
"C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe" /ping 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-PGFwcCBhcHBpZD0iezhBNjlEMzQ1LUQ1NjQtNDYzYy1BRkYxLUE2OUQ5RTUzMEY5Nn0iIHZlcnNpb249IjEyMy4wLjYzMTIuMTIzIiBuZXh0dmVyc2lvbj0iIiBsYW5nPSJlbiIgYnJhbmQ9IkdHTFMiIGNsaWVudD0iIiBpbnN0YWxsYWdlPSIyIiBpbnN0YWxsZGF0ZXRpbWU9IjE3MzkyODM0MTAiIG9vYmVfaW5zdGFsbF90aW1lPSIxMzM4Mzc1NTUzNjg2NzAwMDAiPjxldmVudCBldmVudHR5cGU9IjMxIiBldmVudHJlc3VsdD0iMSIgZXJyb3Jjb2RlPSIwIiBleHRyYWNvZGUxPSIyMTc5ODYyIiBzeXN0ZW1fdXB0aW1lX3RpY2tzPSI1MTc2ODgzOTMyIi8-PC9hcHA-PC9yZXF1ZXN0Pg
1⤵
- System Location Discovery: System Language Discovery
- System Network Configuration Discovery: Internet Connection Discovery
PID:1956

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

Persistence

Boot or Logon Autostart Execution

2

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Winlogon Helper DLL

1

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

2

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Winlogon Helper DLL

1

T1547.004

Defense Evasion

Modify Registry

2

T1112

Credential Access

Discovery

Remote System Discovery

1

T1018

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

System Network Configuration Discovery

1

T1016

Internet Connection Discovery

1

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

msdcsc.exe

Path C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
Size 1.1MB
SHA256 b3a37093609f9a20ad60b85a9fa9de2ba674cba9b5bd687729440c70ba619ca0
MD5 d881de17aa8f2e2c08cbb7b265f928f9
SHA1 08936aebc87decf0af6e8eada191062b5e65ac2a
SHA512 5f23bfb1b8740247b36ed0ab741738c7d4c949736129e767213e321607d1ccd3e3a8428e4ba44bd28a275b5e3f6206285b1a522514b7ef7ea5e698d90a713d34
SSDEEP 24576:jp2silPBMIXGWClfuRcUGIJYK15Qs/QZM:jp2sMO7VzUTJH15QFZM
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/1736-3-0x0000000000400000-0x00000000004AF000-memory.dmp

Download

memory/1736-6-0x0000000000400000-0x00000000004AF000-memory.dmp

Download

memory/1736-4-0x0000000000400000-0x00000000004AF000-memory.dmp

Download

memory/1736-7-0x0000000000400000-0x00000000004AF000-memory.dmp

Download

memory/1736-8-0x0000000000400000-0x00000000004AF000-memory.dmp

Download

memory/1736-69-0x0000000000400000-0x00000000004AF000-memory.dmp

Download

memory/2304-0-0x0000000074812000-0x0000000074813000-memory.dmp

Download

memory/2304-1-0x0000000074810000-0x0000000074DC1000-memory.dmp

Download

memory/2304-2-0x0000000074810000-0x0000000074DC1000-memory.dmp

Download

memory/2304-11-0x0000000074810000-0x0000000074DC1000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads