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
2720	IMDCSC.exe

Loads dropped DLL 1 IoCs

pid	Process
2652	vbc.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-1-5-21-4177215427-74451935-3209572229-1000\Software\Microsoft\Windows\CurrentVersion\Run\JavaW = "C:\\Users\\Admin\\AppData\\Local\\Temp\\JavaW.exe"	16e55ff4bcfa09e92f6f5eb907935e35_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4177215427-74451935-3209572229-1000\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 2460 set thread context of 2652	2460	16e55ff4bcfa09e92f6f5eb907935e35_JaffaCakes118.exe	32

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 23 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	2652	vbc.exe
Token: SeSecurityPrivilege	2652	vbc.exe
Token: SeTakeOwnershipPrivilege	2652	vbc.exe
Token: SeLoadDriverPrivilege	2652	vbc.exe
Token: SeSystemProfilePrivilege	2652	vbc.exe
Token: SeSystemtimePrivilege	2652	vbc.exe
Token: SeProfSingleProcessPrivilege	2652	vbc.exe
Token: SeIncBasePriorityPrivilege	2652	vbc.exe
Token: SeCreatePagefilePrivilege	2652	vbc.exe
Token: SeBackupPrivilege	2652	vbc.exe
Token: SeRestorePrivilege	2652	vbc.exe
Token: SeShutdownPrivilege	2652	vbc.exe
Token: SeDebugPrivilege	2652	vbc.exe
Token: SeSystemEnvironmentPrivilege	2652	vbc.exe
Token: SeChangeNotifyPrivilege	2652	vbc.exe
Token: SeRemoteShutdownPrivilege	2652	vbc.exe
Token: SeUndockPrivilege	2652	vbc.exe
Token: SeManageVolumePrivilege	2652	vbc.exe
Token: SeImpersonatePrivilege	2652	vbc.exe
Token: SeCreateGlobalPrivilege	2652	vbc.exe
Token: 33	2652	vbc.exe
Token: 34	2652	vbc.exe
Token: 35	2652	vbc.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 2460 wrote to memory of 2652	2460	16e55ff4bcfa09e92f6f5eb907935e35_JaffaCakes118.exe	32
PID 2460 wrote to memory of 2652	2460	16e55ff4bcfa09e92f6f5eb907935e35_JaffaCakes118.exe	32
PID 2460 wrote to memory of 2652	2460	16e55ff4bcfa09e92f6f5eb907935e35_JaffaCakes118.exe	32
PID 2460 wrote to memory of 2652	2460	16e55ff4bcfa09e92f6f5eb907935e35_JaffaCakes118.exe	32
PID 2460 wrote to memory of 2652	2460	16e55ff4bcfa09e92f6f5eb907935e35_JaffaCakes118.exe	32
PID 2460 wrote to memory of 2652	2460	16e55ff4bcfa09e92f6f5eb907935e35_JaffaCakes118.exe	32
PID 2460 wrote to memory of 2652	2460	16e55ff4bcfa09e92f6f5eb907935e35_JaffaCakes118.exe	32
PID 2460 wrote to memory of 2652	2460	16e55ff4bcfa09e92f6f5eb907935e35_JaffaCakes118.exe	32
PID 2460 wrote to memory of 2652	2460	16e55ff4bcfa09e92f6f5eb907935e35_JaffaCakes118.exe	32
PID 2460 wrote to memory of 2652	2460	16e55ff4bcfa09e92f6f5eb907935e35_JaffaCakes118.exe	32
PID 2460 wrote to memory of 2652	2460	16e55ff4bcfa09e92f6f5eb907935e35_JaffaCakes118.exe	32
PID 2460 wrote to memory of 2652	2460	16e55ff4bcfa09e92f6f5eb907935e35_JaffaCakes118.exe	32
PID 2460 wrote to memory of 2652	2460	16e55ff4bcfa09e92f6f5eb907935e35_JaffaCakes118.exe	32
PID 2652 wrote to memory of 2720	2652	vbc.exe	33
PID 2652 wrote to memory of 2720	2652	vbc.exe	33
PID 2652 wrote to memory of 2720	2652	vbc.exe	33
PID 2652 wrote to memory of 2720	2652	vbc.exe	33

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:2460
- 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
  - Loads dropped DLL
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2652
- - 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:2720

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

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

Filesize
1.1MB

MD5
34aa912defa18c2c129f1e09d75c1d7e

SHA1
9c3046324657505a30ecd9b1fdb46c05bde7d470

SHA256
6df94b7fa33f1b87142adc39b3db0613fc520d9e7a5fd6a5301dd7f51f8d0386

SHA512
d1ea9368f5d7166180612fd763c87afb647d088498887961f5e7fb0a10f4a808bd5928e8a3666d70ff794093c51ecca8816f75dd47652fd4eb23dce7f9aa1f98

Download Submit
memory/2460-0-0x00000000747C1000-0x00000000747C2000-memory.dmp

Filesize
4KB

Download
memory/2460-1-0x00000000747C0000-0x0000000074D6B000-memory.dmp

Filesize
5.7MB

Download
memory/2460-2-0x00000000747C0000-0x0000000074D6B000-memory.dmp

Filesize
5.7MB

Download
memory/2460-22-0x00000000747C0000-0x0000000074D6B000-memory.dmp

Filesize
5.7MB

Download
memory/2652-10-0x0000000000400000-0x00000000004B4000-memory.dmp

Filesize
720KB

Download
memory/2652-4-0x0000000000400000-0x00000000004B4000-memory.dmp

Filesize
720KB

Download
memory/2652-12-0x0000000000400000-0x00000000004B4000-memory.dmp

Filesize
720KB

Download
memory/2652-18-0x0000000000400000-0x00000000004B4000-memory.dmp

Filesize
720KB

Download
memory/2652-8-0x0000000000400000-0x00000000004B4000-memory.dmp

Filesize
720KB

Download
memory/2652-6-0x0000000000400000-0x00000000004B4000-memory.dmp

Filesize
720KB

Download
memory/2652-5-0x0000000000400000-0x00000000004B4000-memory.dmp

Filesize
720KB

Download
memory/2652-16-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2652-3-0x0000000000400000-0x00000000004B4000-memory.dmp

Filesize
720KB

Download
memory/2652-21-0x0000000000400000-0x00000000004B4000-memory.dmp

Filesize
720KB

Download
memory/2652-20-0x0000000000400000-0x00000000004B4000-memory.dmp

Filesize
720KB

Download
memory/2652-23-0x0000000000270000-0x0000000000271000-memory.dmp

Filesize
4KB

Download
memory/2652-14-0x0000000000400000-0x00000000004B4000-memory.dmp

Filesize
720KB

Download
memory/2652-30-0x0000000000400000-0x00000000004B4000-memory.dmp

Filesize
720KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads