darkcomet | ce0a51650f34b2fe144bb4e75e3c02ce17620747286261cfc63d203afda26d21

General

Target

512e15f39afaf4bd204454deb4f2bea0_JaffaCakes118.exe
Size

1.3MB
MD5

512e15f39afaf4bd204454deb4f2bea0
SHA1

861246e9af0ecdc148ee87f1103d6ebdef5ce991
SHA256

ce0a51650f34b2fe144bb4e75e3c02ce17620747286261cfc63d203afda26d21
SHA512

75a09c73f4531ec80fb51b24e0592d231f52257a25f1e243403cebf1ca0e01af38e4545e8f4b9612c5fce0e82045d85380360e3ed4f25693165a9cfdc8d63e39
SSDEEP

12288:2MeRfvBd3gpuNWd0nGTpcTJAmfCppjLTQ14CtYMyhEeWcb2/iM5xZGQ8WwYSYryJ:2hpCzNkeEpFwLzISPTr+p9D0QZh9u

Score

10^/10

darkcomet guest16 discovery persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

127.0.0.1:1604

192.168.1.66:1604

scottreadingfc.zapto.org:1604

Mutex

DC_MUTEX-KDK4V5U

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
yPpxaq4gnzED
install
true
offline_keylogger
true
persistence
true
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

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Windows\\system32\\MSDCSC\\msdcsc.exe"	vbc.exe

Executes dropped EXE 1 IoCs

pid	Process
2592	msdcsc.exe

Loads dropped DLL 1 IoCs

pid	Process
2844	vbc.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-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Windows\\system32\\MSDCSC\\msdcsc.exe"	vbc.exe

Drops file in System32 directory 3 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\MSDCSC\msdcsc.exe	vbc.exe
File opened for modification	C:\Windows\SysWOW64\MSDCSC\msdcsc.exe	vbc.exe
File opened for modification	C:\Windows\SysWOW64\MSDCSC\	vbc.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2724 set thread context of 2844	2724	512e15f39afaf4bd204454deb4f2bea0_JaffaCakes118.exe	30

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	msdcsc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	512e15f39afaf4bd204454deb4f2bea0_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vbc.exe

Suspicious use of AdjustPrivilegeToken 23 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	2844	vbc.exe
Token: SeSecurityPrivilege	2844	vbc.exe
Token: SeTakeOwnershipPrivilege	2844	vbc.exe
Token: SeLoadDriverPrivilege	2844	vbc.exe
Token: SeSystemProfilePrivilege	2844	vbc.exe
Token: SeSystemtimePrivilege	2844	vbc.exe
Token: SeProfSingleProcessPrivilege	2844	vbc.exe
Token: SeIncBasePriorityPrivilege	2844	vbc.exe
Token: SeCreatePagefilePrivilege	2844	vbc.exe
Token: SeBackupPrivilege	2844	vbc.exe
Token: SeRestorePrivilege	2844	vbc.exe
Token: SeShutdownPrivilege	2844	vbc.exe
Token: SeDebugPrivilege	2844	vbc.exe
Token: SeSystemEnvironmentPrivilege	2844	vbc.exe
Token: SeChangeNotifyPrivilege	2844	vbc.exe
Token: SeRemoteShutdownPrivilege	2844	vbc.exe
Token: SeUndockPrivilege	2844	vbc.exe
Token: SeManageVolumePrivilege	2844	vbc.exe
Token: SeImpersonatePrivilege	2844	vbc.exe
Token: SeCreateGlobalPrivilege	2844	vbc.exe
Token: 33	2844	vbc.exe
Token: 34	2844	vbc.exe
Token: 35	2844	vbc.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 2724 wrote to memory of 2844	2724	512e15f39afaf4bd204454deb4f2bea0_JaffaCakes118.exe	30
PID 2724 wrote to memory of 2844	2724	512e15f39afaf4bd204454deb4f2bea0_JaffaCakes118.exe	30
PID 2724 wrote to memory of 2844	2724	512e15f39afaf4bd204454deb4f2bea0_JaffaCakes118.exe	30
PID 2724 wrote to memory of 2844	2724	512e15f39afaf4bd204454deb4f2bea0_JaffaCakes118.exe	30
PID 2724 wrote to memory of 2844	2724	512e15f39afaf4bd204454deb4f2bea0_JaffaCakes118.exe	30
PID 2724 wrote to memory of 2844	2724	512e15f39afaf4bd204454deb4f2bea0_JaffaCakes118.exe	30
PID 2724 wrote to memory of 2844	2724	512e15f39afaf4bd204454deb4f2bea0_JaffaCakes118.exe	30
PID 2724 wrote to memory of 2844	2724	512e15f39afaf4bd204454deb4f2bea0_JaffaCakes118.exe	30
PID 2724 wrote to memory of 2844	2724	512e15f39afaf4bd204454deb4f2bea0_JaffaCakes118.exe	30
PID 2724 wrote to memory of 2844	2724	512e15f39afaf4bd204454deb4f2bea0_JaffaCakes118.exe	30
PID 2724 wrote to memory of 2844	2724	512e15f39afaf4bd204454deb4f2bea0_JaffaCakes118.exe	30
PID 2724 wrote to memory of 2844	2724	512e15f39afaf4bd204454deb4f2bea0_JaffaCakes118.exe	30
PID 2724 wrote to memory of 2844	2724	512e15f39afaf4bd204454deb4f2bea0_JaffaCakes118.exe	30
PID 2844 wrote to memory of 2592	2844	vbc.exe	31
PID 2844 wrote to memory of 2592	2844	vbc.exe	31
PID 2844 wrote to memory of 2592	2844	vbc.exe	31
PID 2844 wrote to memory of 2592	2844	vbc.exe	31

C:\Users\Admin\AppData\Local\Temp\512e15f39afaf4bd204454deb4f2bea0_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\512e15f39afaf4bd204454deb4f2bea0_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2724
- 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
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2844
- - C:\Windows\SysWOW64\MSDCSC\msdcsc.exe
    "C:\Windows\system32\MSDCSC\msdcsc.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:2592

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:\Windows\SysWOW64\MSDCSC\msdcsc.exe

Filesize
1.1MB

MD5
34aa912defa18c2c129f1e09d75c1d7e

SHA1
9c3046324657505a30ecd9b1fdb46c05bde7d470

SHA256
6df94b7fa33f1b87142adc39b3db0613fc520d9e7a5fd6a5301dd7f51f8d0386

SHA512
d1ea9368f5d7166180612fd763c87afb647d088498887961f5e7fb0a10f4a808bd5928e8a3666d70ff794093c51ecca8816f75dd47652fd4eb23dce7f9aa1f98

Download Submit
memory/2724-0-0x0000000074081000-0x0000000074082000-memory.dmp

Filesize
4KB

Download
memory/2724-1-0x0000000074080000-0x000000007462B000-memory.dmp

Filesize
5.7MB

Download
memory/2724-2-0x0000000074080000-0x000000007462B000-memory.dmp

Filesize
5.7MB

Download
memory/2724-21-0x0000000074080000-0x000000007462B000-memory.dmp

Filesize
5.7MB

Download
memory/2844-19-0x0000000000400000-0x00000000004CD000-memory.dmp

Filesize
820KB

Download
memory/2844-7-0x0000000000400000-0x00000000004CD000-memory.dmp

Filesize
820KB

Download
memory/2844-16-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2844-14-0x0000000000400000-0x00000000004CD000-memory.dmp

Filesize
820KB

Download
memory/2844-12-0x0000000000400000-0x00000000004CD000-memory.dmp

Filesize
820KB

Download
memory/2844-10-0x0000000000400000-0x00000000004CD000-memory.dmp

Filesize
820KB

Download
memory/2844-9-0x0000000000400000-0x00000000004CD000-memory.dmp

Filesize
820KB

Download
memory/2844-18-0x0000000000400000-0x00000000004CD000-memory.dmp

Filesize
820KB

Download
memory/2844-5-0x0000000000400000-0x00000000004CD000-memory.dmp

Filesize
820KB

Download
memory/2844-20-0x0000000000400000-0x00000000004CD000-memory.dmp

Filesize
820KB

Download
memory/2844-13-0x0000000000400000-0x00000000004CD000-memory.dmp

Filesize
820KB

Download
memory/2844-22-0x0000000000400000-0x00000000004CD000-memory.dmp

Filesize
820KB

Download
memory/2844-23-0x0000000000400000-0x00000000004CD000-memory.dmp

Filesize
820KB

Download
memory/2844-4-0x0000000000400000-0x00000000004CD000-memory.dmp

Filesize
820KB

Download
memory/2844-33-0x0000000000400000-0x00000000004CD000-memory.dmp

Filesize
820KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads