darkcomet | c7a92e58954faf2a030b8be24bbe012e7fa95f8bf32d3e9cb04107208d8ff80d

General

Target

1455792a7bf29cc929014c720d999f90_JaffaCakes118.exe
Size

748KB
MD5

1455792a7bf29cc929014c720d999f90
SHA1

87b9a5187ed8684bcba977cb250d8fbdb5bd331f
SHA256

c7a92e58954faf2a030b8be24bbe012e7fa95f8bf32d3e9cb04107208d8ff80d
SHA512

6bdc25f97e3bcb54fe613e3dc51d4fef999677f95999e3d3d33fc25484befd6cc5922570dd91e195ae7c867f1ca8d15554cafe0c5f5ef2820b5d8036978e0fb0
SSDEEP

12288:mk0QVlhmPojAPTMEsUTg0oChO/Q2JbsbjPbN5qhRTtYe3f+Iw86k/9/+S:L0QRWoJEfg0oChGdJQbjPbNW5tYeP+G/

Score

10^/10

darkcomet guest16 evasion persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

mathiasrats1.no-ip.org:1604

Mutex

DC_MUTEX-Z6H69NS

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
1jNHiSy22ogX
install
true
offline_keylogger
true
persistence
false
reg_key
MicroUpdate

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

Processes:

1455792a7bf29cc929014c720d999f90_JaffaCakes118.exe

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"	1455792a7bf29cc929014c720d999f90_JaffaCakes118.exe

Disables RegEdit via registry modification 2 IoCs

evasion

Processes:

iexplore.exemsdcsc.exe

description	ioc	process
Set value (int)	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000\Software\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000\Software\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1"	msdcsc.exe

Disables Task Manager via registry modification
evasion
Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

2520 cmd.exe
Executes dropped EXE 1 IoCs

Processes:

msdcsc.exe

pid process

2612 msdcsc.exe
Loads dropped DLL 2 IoCs

Processes:

1455792a7bf29cc929014c720d999f90_JaffaCakes118.exe

pid process

1888 1455792a7bf29cc929014c720d999f90_JaffaCakes118.exe
1888 1455792a7bf29cc929014c720d999f90_JaffaCakes118.exe

pid	process
2520	cmd.exe

pid	process
2612	msdcsc.exe

pid	process
1888	1455792a7bf29cc929014c720d999f90_JaffaCakes118.exe
1888	1455792a7bf29cc929014c720d999f90_JaffaCakes118.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

1455792a7bf29cc929014c720d999f90_JaffaCakes118.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	1455792a7bf29cc929014c720d999f90_JaffaCakes118.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

msdcsc.exe

description pid process target process

PID 2612 set thread context of 2632 2612 msdcsc.exe iexplore.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery
T1018

Processes:

PING.EXE

pid process

2552 PING.EXE

description	pid	process	target process
PID 2612 set thread context of 2632	2612	msdcsc.exe	iexplore.exe

pid	process
2552	PING.EXE

Suspicious use of AdjustPrivilegeToken 64 IoCs

Processes:

1455792a7bf29cc929014c720d999f90_JaffaCakes118.exemsdcsc.exeiexplore.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	1888	1455792a7bf29cc929014c720d999f90_JaffaCakes118.exe
Token: SeSecurityPrivilege	1888	1455792a7bf29cc929014c720d999f90_JaffaCakes118.exe
Token: SeTakeOwnershipPrivilege	1888	1455792a7bf29cc929014c720d999f90_JaffaCakes118.exe
Token: SeLoadDriverPrivilege	1888	1455792a7bf29cc929014c720d999f90_JaffaCakes118.exe
Token: SeSystemProfilePrivilege	1888	1455792a7bf29cc929014c720d999f90_JaffaCakes118.exe
Token: SeSystemtimePrivilege	1888	1455792a7bf29cc929014c720d999f90_JaffaCakes118.exe
Token: SeProfSingleProcessPrivilege	1888	1455792a7bf29cc929014c720d999f90_JaffaCakes118.exe
Token: SeIncBasePriorityPrivilege	1888	1455792a7bf29cc929014c720d999f90_JaffaCakes118.exe
Token: SeCreatePagefilePrivilege	1888	1455792a7bf29cc929014c720d999f90_JaffaCakes118.exe
Token: SeBackupPrivilege	1888	1455792a7bf29cc929014c720d999f90_JaffaCakes118.exe
Token: SeRestorePrivilege	1888	1455792a7bf29cc929014c720d999f90_JaffaCakes118.exe
Token: SeShutdownPrivilege	1888	1455792a7bf29cc929014c720d999f90_JaffaCakes118.exe
Token: SeDebugPrivilege	1888	1455792a7bf29cc929014c720d999f90_JaffaCakes118.exe
Token: SeSystemEnvironmentPrivilege	1888	1455792a7bf29cc929014c720d999f90_JaffaCakes118.exe
Token: SeChangeNotifyPrivilege	1888	1455792a7bf29cc929014c720d999f90_JaffaCakes118.exe
Token: SeRemoteShutdownPrivilege	1888	1455792a7bf29cc929014c720d999f90_JaffaCakes118.exe
Token: SeUndockPrivilege	1888	1455792a7bf29cc929014c720d999f90_JaffaCakes118.exe
Token: SeManageVolumePrivilege	1888	1455792a7bf29cc929014c720d999f90_JaffaCakes118.exe
Token: SeImpersonatePrivilege	1888	1455792a7bf29cc929014c720d999f90_JaffaCakes118.exe
Token: SeCreateGlobalPrivilege	1888	1455792a7bf29cc929014c720d999f90_JaffaCakes118.exe
Token: 33	1888	1455792a7bf29cc929014c720d999f90_JaffaCakes118.exe
Token: 34	1888	1455792a7bf29cc929014c720d999f90_JaffaCakes118.exe
Token: 35	1888	1455792a7bf29cc929014c720d999f90_JaffaCakes118.exe
Token: SeIncreaseQuotaPrivilege	2612	msdcsc.exe
Token: SeSecurityPrivilege	2612	msdcsc.exe
Token: SeTakeOwnershipPrivilege	2612	msdcsc.exe
Token: SeLoadDriverPrivilege	2612	msdcsc.exe
Token: SeSystemProfilePrivilege	2612	msdcsc.exe
Token: SeSystemtimePrivilege	2612	msdcsc.exe
Token: SeProfSingleProcessPrivilege	2612	msdcsc.exe
Token: SeIncBasePriorityPrivilege	2612	msdcsc.exe
Token: SeCreatePagefilePrivilege	2612	msdcsc.exe
Token: SeBackupPrivilege	2612	msdcsc.exe
Token: SeRestorePrivilege	2612	msdcsc.exe
Token: SeShutdownPrivilege	2612	msdcsc.exe
Token: SeDebugPrivilege	2612	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	2612	msdcsc.exe
Token: SeChangeNotifyPrivilege	2612	msdcsc.exe
Token: SeRemoteShutdownPrivilege	2612	msdcsc.exe
Token: SeUndockPrivilege	2612	msdcsc.exe
Token: SeManageVolumePrivilege	2612	msdcsc.exe
Token: SeImpersonatePrivilege	2612	msdcsc.exe
Token: SeCreateGlobalPrivilege	2612	msdcsc.exe
Token: 33	2612	msdcsc.exe
Token: 34	2612	msdcsc.exe
Token: 35	2612	msdcsc.exe
Token: SeIncreaseQuotaPrivilege	2632	iexplore.exe
Token: SeSecurityPrivilege	2632	iexplore.exe
Token: SeTakeOwnershipPrivilege	2632	iexplore.exe
Token: SeLoadDriverPrivilege	2632	iexplore.exe
Token: SeSystemProfilePrivilege	2632	iexplore.exe
Token: SeSystemtimePrivilege	2632	iexplore.exe
Token: SeProfSingleProcessPrivilege	2632	iexplore.exe
Token: SeIncBasePriorityPrivilege	2632	iexplore.exe
Token: SeCreatePagefilePrivilege	2632	iexplore.exe
Token: SeBackupPrivilege	2632	iexplore.exe
Token: SeRestorePrivilege	2632	iexplore.exe
Token: SeShutdownPrivilege	2632	iexplore.exe
Token: SeDebugPrivilege	2632	iexplore.exe
Token: SeSystemEnvironmentPrivilege	2632	iexplore.exe
Token: SeChangeNotifyPrivilege	2632	iexplore.exe
Token: SeRemoteShutdownPrivilege	2632	iexplore.exe
Token: SeUndockPrivilege	2632	iexplore.exe
Token: SeManageVolumePrivilege	2632	iexplore.exe

Suspicious use of WriteProcessMemory 18 IoCs

Processes:

1455792a7bf29cc929014c720d999f90_JaffaCakes118.exemsdcsc.execmd.exe

description	pid	process	target process
PID 1888 wrote to memory of 2520	1888	1455792a7bf29cc929014c720d999f90_JaffaCakes118.exe	cmd.exe
PID 1888 wrote to memory of 2520	1888	1455792a7bf29cc929014c720d999f90_JaffaCakes118.exe	cmd.exe
PID 1888 wrote to memory of 2520	1888	1455792a7bf29cc929014c720d999f90_JaffaCakes118.exe	cmd.exe
PID 1888 wrote to memory of 2520	1888	1455792a7bf29cc929014c720d999f90_JaffaCakes118.exe	cmd.exe
PID 1888 wrote to memory of 2612	1888	1455792a7bf29cc929014c720d999f90_JaffaCakes118.exe	msdcsc.exe
PID 1888 wrote to memory of 2612	1888	1455792a7bf29cc929014c720d999f90_JaffaCakes118.exe	msdcsc.exe
PID 1888 wrote to memory of 2612	1888	1455792a7bf29cc929014c720d999f90_JaffaCakes118.exe	msdcsc.exe
PID 1888 wrote to memory of 2612	1888	1455792a7bf29cc929014c720d999f90_JaffaCakes118.exe	msdcsc.exe
PID 2612 wrote to memory of 2632	2612	msdcsc.exe	iexplore.exe
PID 2612 wrote to memory of 2632	2612	msdcsc.exe	iexplore.exe
PID 2612 wrote to memory of 2632	2612	msdcsc.exe	iexplore.exe
PID 2612 wrote to memory of 2632	2612	msdcsc.exe	iexplore.exe
PID 2612 wrote to memory of 2632	2612	msdcsc.exe	iexplore.exe
PID 2612 wrote to memory of 2632	2612	msdcsc.exe	iexplore.exe
PID 2520 wrote to memory of 2552	2520	cmd.exe	PING.EXE
PID 2520 wrote to memory of 2552	2520	cmd.exe	PING.EXE
PID 2520 wrote to memory of 2552	2520	cmd.exe	PING.EXE
PID 2520 wrote to memory of 2552	2520	cmd.exe	PING.EXE

C:\Users\Admin\AppData\Local\Temp\1455792a7bf29cc929014c720d999f90_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\1455792a7bf29cc929014c720d999f90_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1888

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /k ping 127.0.0.1 -n 4 && del "C:\Users\Admin\AppData\Local\Temp\1455792a7bf29cc929014c720d999f90_JaffaCakes118.exe"
2⤵
- Deletes itself
- Suspicious use of WriteProcessMemory
PID:2520

C:\Windows\SysWOW64\PING.EXE
ping 127.0.0.1 -n 4
3⤵
- Runs ping.exe
PID:2552

C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
"C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
2⤵
- Disables RegEdit via registry modification
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2612

C:\Program Files (x86)\Internet Explorer\iexplore.exe
"C:\Program Files (x86)\Internet Explorer\iexplore.exe"
3⤵
- Disables RegEdit via registry modification
- Suspicious use of AdjustPrivilegeToken
PID:2632

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

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

System Information Discovery

1

T1082

Remote System Discovery

1

T1018

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

\Users\Admin\Documents\MSDCSC\msdcsc.exe
Filesize
748KB

MD5
1455792a7bf29cc929014c720d999f90

SHA1
87b9a5187ed8684bcba977cb250d8fbdb5bd331f

SHA256
c7a92e58954faf2a030b8be24bbe012e7fa95f8bf32d3e9cb04107208d8ff80d

SHA512
6bdc25f97e3bcb54fe613e3dc51d4fef999677f95999e3d3d33fc25484befd6cc5922570dd91e195ae7c867f1ca8d15554cafe0c5f5ef2820b5d8036978e0fb0

Download Submit
memory/1888-0-0x00000000003E0000-0x00000000003E1000-memory.dmp

Filesize
4KB

Download
memory/1888-11-0x0000000000400000-0x00000000004C8000-memory.dmp

Filesize
800KB

Download
memory/2612-15-0x0000000000400000-0x00000000004C8000-memory.dmp

Filesize
800KB

Download
memory/2612-12-0x0000000000260000-0x0000000000261000-memory.dmp

Filesize
4KB

Download
memory/2632-14-0x0000000000400000-0x00000000004C8000-memory.dmp

Filesize
800KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads