darkcomet | e4f036226324c182632a98380492bb27763ff6cdd9fb0d245f192466b0e7e843

General

Target

845b6ee63a9152cb8643b92a3ae90af9_JaffaCakes118.exe
Size

1.2MB
MD5

845b6ee63a9152cb8643b92a3ae90af9
SHA1

083e3c8909a8b9ae7c8a2c8a863e2b946552d713
SHA256

e4f036226324c182632a98380492bb27763ff6cdd9fb0d245f192466b0e7e843
SHA512

6581b7817354bebbf66f43bdfddec67c9509e60ae25d0cffdc4d5e887edf9605832c8d6e495aeb48a62973781d5daae24c8057fcfb8864d4d9eaf0d0543293e5
SSDEEP

12288:NVYOQyD2jIzt+cpUlnKFP8xMz1Tv5G9GHZK/wgbrtMuWsL2tEFa1g9w3ppvD0tY1:4WMKUav5QbaCPUItj1uaQp6m

Score

10^/10

darkcomet guest16_min discovery persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16_min

C2

xoman.no-ip.org:1604

Mutex

DCMIN_MUTEX-ALKG91K

Attributes

InstallPath
DCSCMIN\IMDCSC.exe
gencode
CrUq1cZTXVCH
install
true
offline_keylogger
true
persistence
false
reg_key
DarkComet RAT

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

Processes:

vbc.exe

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

Executes dropped EXE 1 IoCs

Processes:

IMDCSC.exe

pid process

388 IMDCSC.exe
Uses the VBS compiler for execution 1 TTPs

Command and Scripting Interpreter
T1059

pid	process
388	IMDCSC.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

vbc.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\DarkComet RAT = "C:\\Windows\\system32\\DCSCMIN\\IMDCSC.exe"	vbc.exe

Drops file in System32 directory 2 IoCs

Processes:

vbc.exe

description	ioc	process
File created	C:\Windows\SysWOW64\DCSCMIN\IMDCSC.exe	vbc.exe
File opened for modification	C:\Windows\SysWOW64\DCSCMIN\IMDCSC.exe	vbc.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

845b6ee63a9152cb8643b92a3ae90af9_JaffaCakes118.exe

description pid process target process

PID 4500 set thread context of 628 4500 845b6ee63a9152cb8643b92a3ae90af9_JaffaCakes118.exe vbc.exe

description	pid	process	target process
PID 4500 set thread context of 628	4500	845b6ee63a9152cb8643b92a3ae90af9_JaffaCakes118.exe	vbc.exe

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

Processes:

vbc.exeIMDCSC.exe845b6ee63a9152cb8643b92a3ae90af9_JaffaCakes118.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vbc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	IMDCSC.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	845b6ee63a9152cb8643b92a3ae90af9_JaffaCakes118.exe

Suspicious use of AdjustPrivilegeToken 24 IoCs

Processes:

vbc.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	628	vbc.exe
Token: SeSecurityPrivilege	628	vbc.exe
Token: SeTakeOwnershipPrivilege	628	vbc.exe
Token: SeLoadDriverPrivilege	628	vbc.exe
Token: SeSystemProfilePrivilege	628	vbc.exe
Token: SeSystemtimePrivilege	628	vbc.exe
Token: SeProfSingleProcessPrivilege	628	vbc.exe
Token: SeIncBasePriorityPrivilege	628	vbc.exe
Token: SeCreatePagefilePrivilege	628	vbc.exe
Token: SeBackupPrivilege	628	vbc.exe
Token: SeRestorePrivilege	628	vbc.exe
Token: SeShutdownPrivilege	628	vbc.exe
Token: SeDebugPrivilege	628	vbc.exe
Token: SeSystemEnvironmentPrivilege	628	vbc.exe
Token: SeChangeNotifyPrivilege	628	vbc.exe
Token: SeRemoteShutdownPrivilege	628	vbc.exe
Token: SeUndockPrivilege	628	vbc.exe
Token: SeManageVolumePrivilege	628	vbc.exe
Token: SeImpersonatePrivilege	628	vbc.exe
Token: SeCreateGlobalPrivilege	628	vbc.exe
Token: 33	628	vbc.exe
Token: 34	628	vbc.exe
Token: 35	628	vbc.exe
Token: 36	628	vbc.exe

Suspicious use of WriteProcessMemory 17 IoCs

Processes:

845b6ee63a9152cb8643b92a3ae90af9_JaffaCakes118.exevbc.exe

description	pid	process	target process
PID 4500 wrote to memory of 628	4500	845b6ee63a9152cb8643b92a3ae90af9_JaffaCakes118.exe	vbc.exe
PID 4500 wrote to memory of 628	4500	845b6ee63a9152cb8643b92a3ae90af9_JaffaCakes118.exe	vbc.exe
PID 4500 wrote to memory of 628	4500	845b6ee63a9152cb8643b92a3ae90af9_JaffaCakes118.exe	vbc.exe
PID 4500 wrote to memory of 628	4500	845b6ee63a9152cb8643b92a3ae90af9_JaffaCakes118.exe	vbc.exe
PID 4500 wrote to memory of 628	4500	845b6ee63a9152cb8643b92a3ae90af9_JaffaCakes118.exe	vbc.exe
PID 4500 wrote to memory of 628	4500	845b6ee63a9152cb8643b92a3ae90af9_JaffaCakes118.exe	vbc.exe
PID 4500 wrote to memory of 628	4500	845b6ee63a9152cb8643b92a3ae90af9_JaffaCakes118.exe	vbc.exe
PID 4500 wrote to memory of 628	4500	845b6ee63a9152cb8643b92a3ae90af9_JaffaCakes118.exe	vbc.exe
PID 4500 wrote to memory of 628	4500	845b6ee63a9152cb8643b92a3ae90af9_JaffaCakes118.exe	vbc.exe
PID 4500 wrote to memory of 628	4500	845b6ee63a9152cb8643b92a3ae90af9_JaffaCakes118.exe	vbc.exe
PID 4500 wrote to memory of 628	4500	845b6ee63a9152cb8643b92a3ae90af9_JaffaCakes118.exe	vbc.exe
PID 4500 wrote to memory of 628	4500	845b6ee63a9152cb8643b92a3ae90af9_JaffaCakes118.exe	vbc.exe
PID 4500 wrote to memory of 628	4500	845b6ee63a9152cb8643b92a3ae90af9_JaffaCakes118.exe	vbc.exe
PID 4500 wrote to memory of 628	4500	845b6ee63a9152cb8643b92a3ae90af9_JaffaCakes118.exe	vbc.exe
PID 628 wrote to memory of 388	628	vbc.exe	IMDCSC.exe
PID 628 wrote to memory of 388	628	vbc.exe	IMDCSC.exe
PID 628 wrote to memory of 388	628	vbc.exe	IMDCSC.exe

C:\Users\Admin\AppData\Local\Temp\845b6ee63a9152cb8643b92a3ae90af9_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\845b6ee63a9152cb8643b92a3ae90af9_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4500
- 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
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:628
- - C:\Windows\SysWOW64\DCSCMIN\IMDCSC.exe
    "C:\Windows\system32\DCSCMIN\IMDCSC.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:388

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\DCSCMIN\IMDCSC.exe

Filesize
1.1MB

MD5
d881de17aa8f2e2c08cbb7b265f928f9

SHA1
08936aebc87decf0af6e8eada191062b5e65ac2a

SHA256
b3a37093609f9a20ad60b85a9fa9de2ba674cba9b5bd687729440c70ba619ca0

SHA512
5f23bfb1b8740247b36ed0ab741738c7d4c949736129e767213e321607d1ccd3e3a8428e4ba44bd28a275b5e3f6206285b1a522514b7ef7ea5e698d90a713d34

Download Submit
memory/628-4-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/628-3-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/628-6-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/628-8-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/628-9-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/628-20-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/4500-0-0x0000000075552000-0x0000000075553000-memory.dmp

Filesize
4KB

Download
memory/4500-1-0x0000000075550000-0x0000000075B01000-memory.dmp

Filesize
5.7MB

Download
memory/4500-2-0x0000000075550000-0x0000000075B01000-memory.dmp

Filesize
5.7MB

Download
memory/4500-7-0x0000000075550000-0x0000000075B01000-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