darkcomet | 27b67644170b08d57dcd8bb39d9b779632aad6697845015175e51e4801a42a5a

General

Target

JaffaCakes118_b6b6a5213f8b3e7ce5306cd069dcbf5e.exe
Size

800KB
MD5

b6b6a5213f8b3e7ce5306cd069dcbf5e
SHA1

9991f4da8630039b84f4bf8c1b45fec898fa80b7
SHA256

27b67644170b08d57dcd8bb39d9b779632aad6697845015175e51e4801a42a5a
SHA512

bb0deacba3eeca40fe69990c30a9a3cee3d82052d895a50e7c92b461ca19ecf6c1109209763b6df4ea2fe9c3565c672fe63c7a11dfd9692ba71fae223eafb6ea
SSDEEP

12288:+f9tz7HqHG/niI+dExFzfPrwbg1llIfUls:+f7z7HqKsE+2lIff

Score

10^/10

darkcomet guest16 discovery persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

speeed.hopto.org:147

Mutex

DC_MUTEX-HGY40HP

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
cNTlixxZgYma
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\\cNTlixxZgYma\\msdcsc.exe"	JaffaCakes118_b6b6a5213f8b3e7ce5306cd069dcbf5e.exe

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-1-5-21-4003209913-3868522715-854928974-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\cNTlixxZgYma\\msdcsc.exe"	JaffaCakes118_b6b6a5213f8b3e7ce5306cd069dcbf5e.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
392	3884	WerFault.exe	84

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1852 set thread context of 3884	1852	JaffaCakes118_b6b6a5213f8b3e7ce5306cd069dcbf5e.exe	84

System Location Discovery: System Language Discovery 1 TTPs 1 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	JaffaCakes118_b6b6a5213f8b3e7ce5306cd069dcbf5e.exe

Suspicious use of AdjustPrivilegeToken 24 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	1852	JaffaCakes118_b6b6a5213f8b3e7ce5306cd069dcbf5e.exe
Token: SeSecurityPrivilege	1852	JaffaCakes118_b6b6a5213f8b3e7ce5306cd069dcbf5e.exe
Token: SeTakeOwnershipPrivilege	1852	JaffaCakes118_b6b6a5213f8b3e7ce5306cd069dcbf5e.exe
Token: SeLoadDriverPrivilege	1852	JaffaCakes118_b6b6a5213f8b3e7ce5306cd069dcbf5e.exe
Token: SeSystemProfilePrivilege	1852	JaffaCakes118_b6b6a5213f8b3e7ce5306cd069dcbf5e.exe
Token: SeSystemtimePrivilege	1852	JaffaCakes118_b6b6a5213f8b3e7ce5306cd069dcbf5e.exe
Token: SeProfSingleProcessPrivilege	1852	JaffaCakes118_b6b6a5213f8b3e7ce5306cd069dcbf5e.exe
Token: SeIncBasePriorityPrivilege	1852	JaffaCakes118_b6b6a5213f8b3e7ce5306cd069dcbf5e.exe
Token: SeCreatePagefilePrivilege	1852	JaffaCakes118_b6b6a5213f8b3e7ce5306cd069dcbf5e.exe
Token: SeBackupPrivilege	1852	JaffaCakes118_b6b6a5213f8b3e7ce5306cd069dcbf5e.exe
Token: SeRestorePrivilege	1852	JaffaCakes118_b6b6a5213f8b3e7ce5306cd069dcbf5e.exe
Token: SeShutdownPrivilege	1852	JaffaCakes118_b6b6a5213f8b3e7ce5306cd069dcbf5e.exe
Token: SeDebugPrivilege	1852	JaffaCakes118_b6b6a5213f8b3e7ce5306cd069dcbf5e.exe
Token: SeSystemEnvironmentPrivilege	1852	JaffaCakes118_b6b6a5213f8b3e7ce5306cd069dcbf5e.exe
Token: SeChangeNotifyPrivilege	1852	JaffaCakes118_b6b6a5213f8b3e7ce5306cd069dcbf5e.exe
Token: SeRemoteShutdownPrivilege	1852	JaffaCakes118_b6b6a5213f8b3e7ce5306cd069dcbf5e.exe
Token: SeUndockPrivilege	1852	JaffaCakes118_b6b6a5213f8b3e7ce5306cd069dcbf5e.exe
Token: SeManageVolumePrivilege	1852	JaffaCakes118_b6b6a5213f8b3e7ce5306cd069dcbf5e.exe
Token: SeImpersonatePrivilege	1852	JaffaCakes118_b6b6a5213f8b3e7ce5306cd069dcbf5e.exe
Token: SeCreateGlobalPrivilege	1852	JaffaCakes118_b6b6a5213f8b3e7ce5306cd069dcbf5e.exe
Token: 33	1852	JaffaCakes118_b6b6a5213f8b3e7ce5306cd069dcbf5e.exe
Token: 34	1852	JaffaCakes118_b6b6a5213f8b3e7ce5306cd069dcbf5e.exe
Token: 35	1852	JaffaCakes118_b6b6a5213f8b3e7ce5306cd069dcbf5e.exe
Token: 36	1852	JaffaCakes118_b6b6a5213f8b3e7ce5306cd069dcbf5e.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 1852 wrote to memory of 3884	1852	JaffaCakes118_b6b6a5213f8b3e7ce5306cd069dcbf5e.exe	84
PID 1852 wrote to memory of 3884	1852	JaffaCakes118_b6b6a5213f8b3e7ce5306cd069dcbf5e.exe	84
PID 1852 wrote to memory of 3884	1852	JaffaCakes118_b6b6a5213f8b3e7ce5306cd069dcbf5e.exe	84
PID 1852 wrote to memory of 3884	1852	JaffaCakes118_b6b6a5213f8b3e7ce5306cd069dcbf5e.exe	84
PID 1852 wrote to memory of 3884	1852	JaffaCakes118_b6b6a5213f8b3e7ce5306cd069dcbf5e.exe	84

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b6b6a5213f8b3e7ce5306cd069dcbf5e.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b6b6a5213f8b3e7ce5306cd069dcbf5e.exe"
1⤵
- Modifies WinLogon for persistence
- Adds Run key to start application
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1852
- C:\Program Files (x86)\Internet Explorer\iexplore.exe
  "C:\Program Files (x86)\Internet Explorer\iexplore.exe"
  2⤵
  PID:3884
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 3884 -s 284
    3⤵
    - Program crash
    PID:392

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3884 -ip 3884
1⤵
PID:1492

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

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 Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/1852-2-0x0000000000400000-0x00000000004D1000-memory.dmp

Filesize
836KB

Download
memory/1852-3-0x0000000000400000-0x00000000004D1000-memory.dmp

Filesize
836KB

Download
memory/1852-0-0x0000000000401000-0x0000000000403000-memory.dmp

Filesize
8KB

Download
memory/1852-1-0x0000000000400000-0x00000000004D1000-memory.dmp

Filesize
836KB

Download
memory/1852-5-0x0000000000400000-0x00000000004D1000-memory.dmp

Filesize
836KB

Download
memory/1852-4-0x0000000000400000-0x00000000004D1000-memory.dmp

Filesize
836KB

Download
memory/1852-6-0x0000000000400000-0x00000000004D1000-memory.dmp

Filesize
836KB

Download
memory/1852-7-0x0000000000400000-0x00000000004D1000-memory.dmp

Filesize
836KB

Download
memory/1852-9-0x0000000000400000-0x00000000004D1000-memory.dmp

Filesize
836KB

Download
memory/1852-11-0x0000000000400000-0x00000000004D1000-memory.dmp

Filesize
836KB

Download
memory/1852-12-0x0000000000401000-0x00000000004BC000-memory.dmp

Filesize
748KB

Download
memory/3884-8-0x0000000000400000-0x00000000004D1000-memory.dmp

Filesize
836KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads