darkcomet | 838eb8a75fb50b9591f7be47a2f0ad3f89aac80bf91604cd96fb0fa3a558a098

General

Target

16e55ff4bcfa09e92f6f5eb907935e35_JaffaCakes118.exe
Size

1.0MB
MD5

16e55ff4bcfa09e92f6f5eb907935e35
SHA1

0e1d213c1cd2c2e9c56ed67a5bab9a0a4df2b371
SHA256

838eb8a75fb50b9591f7be47a2f0ad3f89aac80bf91604cd96fb0fa3a558a098
SHA512

43e304e3b75d1e7185211b6b1c94b8b310275b74fb504a382382c83e282e7f7db31479a27c6aa47553c39a8ba08e29e4df9aa45bf1fce9296d1fba5da52c27ae
SSDEEP

24576:xEGaHuTpegXTAScsuz3WMdcDLV7r/v59:iiTk0cDMR7rv5

Score

10^/10

darkcomet guest16_min discovery persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16_min

C2

dclol.zapto.org:1604

Mutex

DCMIN_MUTEX-G03BK0M

Attributes

InstallPath
DCSCMIN\IMDCSC.exe
gencode
Yw4S37efk4QG
install
true
offline_keylogger
true
persistence
false
reg_key
JavaW

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:\\ProgramData\\Microsoft\\Windows\\Start Menu\\DCSCMIN\\IMDCSC.exe"	vbc.exe

Executes dropped EXE 1 IoCs

pid	Process
5088	IMDCSC.exe

Uses the VBS compiler for execution 1 TTPs

Command and Scripting Interpreter
T1059

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-1-5-21-2412658365-3084825385-3340777666-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\JavaW = "C:\\Users\\Admin\\AppData\\Local\\Temp\\JavaW.exe"	16e55ff4bcfa09e92f6f5eb907935e35_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2412658365-3084825385-3340777666-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\JavaW = "C:\\ProgramData\\Microsoft\\Windows\\Start Menu\\DCSCMIN\\IMDCSC.exe"	vbc.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4708 set thread context of 348	4708	16e55ff4bcfa09e92f6f5eb907935e35_JaffaCakes118.exe	82

System Location Discovery: System Language Discovery 1 TTPs 3 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	16e55ff4bcfa09e92f6f5eb907935e35_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vbc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	IMDCSC.exe

Suspicious use of AdjustPrivilegeToken 24 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	348	vbc.exe
Token: SeSecurityPrivilege	348	vbc.exe
Token: SeTakeOwnershipPrivilege	348	vbc.exe
Token: SeLoadDriverPrivilege	348	vbc.exe
Token: SeSystemProfilePrivilege	348	vbc.exe
Token: SeSystemtimePrivilege	348	vbc.exe
Token: SeProfSingleProcessPrivilege	348	vbc.exe
Token: SeIncBasePriorityPrivilege	348	vbc.exe
Token: SeCreatePagefilePrivilege	348	vbc.exe
Token: SeBackupPrivilege	348	vbc.exe
Token: SeRestorePrivilege	348	vbc.exe
Token: SeShutdownPrivilege	348	vbc.exe
Token: SeDebugPrivilege	348	vbc.exe
Token: SeSystemEnvironmentPrivilege	348	vbc.exe
Token: SeChangeNotifyPrivilege	348	vbc.exe
Token: SeRemoteShutdownPrivilege	348	vbc.exe
Token: SeUndockPrivilege	348	vbc.exe
Token: SeManageVolumePrivilege	348	vbc.exe
Token: SeImpersonatePrivilege	348	vbc.exe
Token: SeCreateGlobalPrivilege	348	vbc.exe
Token: 33	348	vbc.exe
Token: 34	348	vbc.exe
Token: 35	348	vbc.exe
Token: 36	348	vbc.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 4708 wrote to memory of 348	4708	16e55ff4bcfa09e92f6f5eb907935e35_JaffaCakes118.exe	82
PID 4708 wrote to memory of 348	4708	16e55ff4bcfa09e92f6f5eb907935e35_JaffaCakes118.exe	82
PID 4708 wrote to memory of 348	4708	16e55ff4bcfa09e92f6f5eb907935e35_JaffaCakes118.exe	82
PID 4708 wrote to memory of 348	4708	16e55ff4bcfa09e92f6f5eb907935e35_JaffaCakes118.exe	82
PID 4708 wrote to memory of 348	4708	16e55ff4bcfa09e92f6f5eb907935e35_JaffaCakes118.exe	82
PID 4708 wrote to memory of 348	4708	16e55ff4bcfa09e92f6f5eb907935e35_JaffaCakes118.exe	82
PID 4708 wrote to memory of 348	4708	16e55ff4bcfa09e92f6f5eb907935e35_JaffaCakes118.exe	82
PID 4708 wrote to memory of 348	4708	16e55ff4bcfa09e92f6f5eb907935e35_JaffaCakes118.exe	82
PID 4708 wrote to memory of 348	4708	16e55ff4bcfa09e92f6f5eb907935e35_JaffaCakes118.exe	82
PID 4708 wrote to memory of 348	4708	16e55ff4bcfa09e92f6f5eb907935e35_JaffaCakes118.exe	82
PID 4708 wrote to memory of 348	4708	16e55ff4bcfa09e92f6f5eb907935e35_JaffaCakes118.exe	82
PID 4708 wrote to memory of 348	4708	16e55ff4bcfa09e92f6f5eb907935e35_JaffaCakes118.exe	82
PID 4708 wrote to memory of 348	4708	16e55ff4bcfa09e92f6f5eb907935e35_JaffaCakes118.exe	82
PID 4708 wrote to memory of 348	4708	16e55ff4bcfa09e92f6f5eb907935e35_JaffaCakes118.exe	82
PID 348 wrote to memory of 5088	348	vbc.exe	83
PID 348 wrote to memory of 5088	348	vbc.exe	83
PID 348 wrote to memory of 5088	348	vbc.exe	83

C:\Users\Admin\AppData\Local\Temp\16e55ff4bcfa09e92f6f5eb907935e35_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\16e55ff4bcfa09e92f6f5eb907935e35_JaffaCakes118.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4708
- 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
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:348
- - C:\ProgramData\Microsoft\Windows\Start Menu\DCSCMIN\IMDCSC.exe
    "C:\ProgramData\Microsoft\Windows\Start Menu\DCSCMIN\IMDCSC.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:5088

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

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\ProgramData\Microsoft\Windows\Start Menu\DCSCMIN\IMDCSC.exe

Filesize
1.1MB

MD5
d881de17aa8f2e2c08cbb7b265f928f9

SHA1
08936aebc87decf0af6e8eada191062b5e65ac2a

SHA256
b3a37093609f9a20ad60b85a9fa9de2ba674cba9b5bd687729440c70ba619ca0

SHA512
5f23bfb1b8740247b36ed0ab741738c7d4c949736129e767213e321607d1ccd3e3a8428e4ba44bd28a275b5e3f6206285b1a522514b7ef7ea5e698d90a713d34

Download Submit
memory/348-3-0x0000000000400000-0x00000000004B4000-memory.dmp

Filesize
720KB

Download
memory/348-4-0x0000000000400000-0x00000000004B4000-memory.dmp

Filesize
720KB

Download
memory/348-7-0x0000000000400000-0x00000000004B4000-memory.dmp

Filesize
720KB

Download
memory/348-8-0x0000000000400000-0x00000000004B4000-memory.dmp

Filesize
720KB

Download
memory/348-9-0x0000000000400000-0x00000000004B4000-memory.dmp

Filesize
720KB

Download
memory/348-21-0x0000000000400000-0x00000000004B4000-memory.dmp

Filesize
720KB

Download
memory/4708-0-0x00000000749C2000-0x00000000749C3000-memory.dmp

Filesize
4KB

Download
memory/4708-1-0x00000000749C0000-0x0000000074F71000-memory.dmp

Filesize
5.7MB

Download
memory/4708-2-0x00000000749C0000-0x0000000074F71000-memory.dmp

Filesize
5.7MB

Download
memory/4708-10-0x00000000749C0000-0x0000000074F71000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads