dcrat | 1616fe23e10718f35e2a92c8329465151e9cf43e0ec07c92bbbb804bc5d36e61

Analysis

max time kernel
117s
max time network
117s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
22-12-2024 18:19

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General

Target

JaffaCakes118_1616fe23e10718f35e2a92c8329465151e9cf43e0ec07c92bbbb804bc5d36e61.exe
Size

1.3MB
MD5

f6c693c9aa885bdb03e534528904a1cc
SHA1

dccef2e61435cddf2d6a9f69a29adc7d25f3387d
SHA256

1616fe23e10718f35e2a92c8329465151e9cf43e0ec07c92bbbb804bc5d36e61
SHA512

03ef8f1d9edf91a9c6503cea7484fb37529d0be2a0a876a2c6ebf099387fe0602042f4c047997ca4bbfdb628675af489df190c44118b5f415464d6b0b3ff52a9
SSDEEP

24576:U2G/nvxW3Ww0t6TnzGmVBDh4+aknuRRZJND0gFJ4rD/IjC:UbA30GnzV/q+DnsXg

Score

10^/10

dcrat discovery execution infostealer rat

Malware Config

Signatures

DcRat
DarkCrystal(DC) is a new .NET RAT active since June 2019 capable of loading additional plugins.
rat infostealer dcrat
Dcrat family
dcrat

Process spawned unexpected child process 15 IoCs

This typically indicates the parent process was compromised via an exploit or macro.

description	pid	pid_target	Process	procid_target
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2016	2620	schtasks.exe	34
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2160	2620	schtasks.exe	34
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2232	2620	schtasks.exe	34
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1196	2620	schtasks.exe	34
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2208	2620	schtasks.exe	34
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2052	2620	schtasks.exe	34
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1896	2620	schtasks.exe	34
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2572	2620	schtasks.exe	34
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	848	2620	schtasks.exe	34
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1396	2620	schtasks.exe	34
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2796	2620	schtasks.exe	34
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2840	2620	schtasks.exe	34
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2420	2620	schtasks.exe	34
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2352	2620	schtasks.exe	34
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2808	2620	schtasks.exe	34

DCRat payload 2 IoCs

Detects payload of DCRat, commonly dropped by NSIS installers.

rat

resource	yara_rule
behavioral1/files/0x0008000000015e25-9.dat	dcrat
behavioral1/memory/2928-13-0x0000000000BD0000-0x0000000000CE0000-memory.dmp	dcrat

Command and Scripting Interpreter: PowerShell 1 TTPs 6 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
1904	powershell.exe
1268	powershell.exe
764	powershell.exe
2704	powershell.exe
3048	powershell.exe
2788	powershell.exe

Executes dropped EXE 2 IoCs

pid	Process
2928	DllCommonsvc.exe
2328	DllCommonsvc.exe

Loads dropped DLL 2 IoCs

pid	Process
2992	cmd.exe
2992	cmd.exe

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files\Google\csrss.exe	DllCommonsvc.exe
File created	C:\Program Files\Google\886983d96e3d3e	DllCommonsvc.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_1616fe23e10718f35e2a92c8329465151e9cf43e0ec07c92bbbb804bc5d36e61.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	WScript.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 15 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
2352	schtasks.exe
2052	schtasks.exe
2840	schtasks.exe
2572	schtasks.exe
848	schtasks.exe
2232	schtasks.exe
1196	schtasks.exe
1396	schtasks.exe
2016	schtasks.exe
2160	schtasks.exe
2796	schtasks.exe
2420	schtasks.exe
2808	schtasks.exe
2208	schtasks.exe
1896	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
2928	DllCommonsvc.exe
2928	DllCommonsvc.exe
2928	DllCommonsvc.exe
2704	powershell.exe
764	powershell.exe
3048	powershell.exe
1904	powershell.exe
2788	powershell.exe
1268	powershell.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	2928	DllCommonsvc.exe
Token: SeDebugPrivilege	2704	powershell.exe
Token: SeDebugPrivilege	764	powershell.exe
Token: SeDebugPrivilege	3048	powershell.exe
Token: SeDebugPrivilege	1904	powershell.exe
Token: SeDebugPrivilege	2788	powershell.exe
Token: SeDebugPrivilege	1268	powershell.exe
Token: SeDebugPrivilege	2328	DllCommonsvc.exe

Suspicious use of WriteProcessMemory 39 IoCs

description	pid	Process	procid_target
PID 2700 wrote to memory of 2860	2700	JaffaCakes118_1616fe23e10718f35e2a92c8329465151e9cf43e0ec07c92bbbb804bc5d36e61.exe	30
PID 2700 wrote to memory of 2860	2700	JaffaCakes118_1616fe23e10718f35e2a92c8329465151e9cf43e0ec07c92bbbb804bc5d36e61.exe	30
PID 2700 wrote to memory of 2860	2700	JaffaCakes118_1616fe23e10718f35e2a92c8329465151e9cf43e0ec07c92bbbb804bc5d36e61.exe	30
PID 2700 wrote to memory of 2860	2700	JaffaCakes118_1616fe23e10718f35e2a92c8329465151e9cf43e0ec07c92bbbb804bc5d36e61.exe	30
PID 2860 wrote to memory of 2992	2860	WScript.exe	31
PID 2860 wrote to memory of 2992	2860	WScript.exe	31
PID 2860 wrote to memory of 2992	2860	WScript.exe	31
PID 2860 wrote to memory of 2992	2860	WScript.exe	31
PID 2992 wrote to memory of 2928	2992	cmd.exe	33
PID 2992 wrote to memory of 2928	2992	cmd.exe	33
PID 2992 wrote to memory of 2928	2992	cmd.exe	33
PID 2992 wrote to memory of 2928	2992	cmd.exe	33
PID 2928 wrote to memory of 1904	2928	DllCommonsvc.exe	50
PID 2928 wrote to memory of 1904	2928	DllCommonsvc.exe	50
PID 2928 wrote to memory of 1904	2928	DllCommonsvc.exe	50
PID 2928 wrote to memory of 1268	2928	DllCommonsvc.exe	51
PID 2928 wrote to memory of 1268	2928	DllCommonsvc.exe	51
PID 2928 wrote to memory of 1268	2928	DllCommonsvc.exe	51
PID 2928 wrote to memory of 764	2928	DllCommonsvc.exe	53
PID 2928 wrote to memory of 764	2928	DllCommonsvc.exe	53
PID 2928 wrote to memory of 764	2928	DllCommonsvc.exe	53
PID 2928 wrote to memory of 2704	2928	DllCommonsvc.exe	54
PID 2928 wrote to memory of 2704	2928	DllCommonsvc.exe	54
PID 2928 wrote to memory of 2704	2928	DllCommonsvc.exe	54
PID 2928 wrote to memory of 2788	2928	DllCommonsvc.exe	55
PID 2928 wrote to memory of 2788	2928	DllCommonsvc.exe	55
PID 2928 wrote to memory of 2788	2928	DllCommonsvc.exe	55
PID 2928 wrote to memory of 3048	2928	DllCommonsvc.exe	56
PID 2928 wrote to memory of 3048	2928	DllCommonsvc.exe	56
PID 2928 wrote to memory of 3048	2928	DllCommonsvc.exe	56
PID 2928 wrote to memory of 2252	2928	DllCommonsvc.exe	62
PID 2928 wrote to memory of 2252	2928	DllCommonsvc.exe	62
PID 2928 wrote to memory of 2252	2928	DllCommonsvc.exe	62
PID 2252 wrote to memory of 292	2252	cmd.exe	64
PID 2252 wrote to memory of 292	2252	cmd.exe	64
PID 2252 wrote to memory of 292	2252	cmd.exe	64
PID 2252 wrote to memory of 2328	2252	cmd.exe	65
PID 2252 wrote to memory of 2328	2252	cmd.exe	65
PID 2252 wrote to memory of 2328	2252	cmd.exe	65

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1616fe23e10718f35e2a92c8329465151e9cf43e0ec07c92bbbb804bc5d36e61.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1616fe23e10718f35e2a92c8329465151e9cf43e0ec07c92bbbb804bc5d36e61.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2700
- C:\Windows\SysWOW64\WScript.exe
  "C:\Windows\System32\WScript.exe" "C:\providercommon\yTUdeXjbLOhnrN32dgrxVg.vbe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2860
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c ""C:\providercommon\1zu9dW.bat" "
    3⤵
    - Loads dropped DLL
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2992
  - - C:\providercommon\DllCommonsvc.exe
      "C:\providercommon\DllCommonsvc.exe"
      4⤵
      Executes dropped EXE
      Drops file in Program Files directory
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      PID:2928
    - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        
        "powershell" -Command Add-MpPreference -ExclusionPath 'C:\providercommon\DllCommonsvc.exe'
        5⤵
        Command and Scripting Interpreter: PowerShell
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:1904
    - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        
        "powershell" -Command Add-MpPreference -ExclusionPath 'C:\providercommon\conhost.exe'
        5⤵
        Command and Scripting Interpreter: PowerShell
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:1268
    - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        
        "powershell" -Command Add-MpPreference -ExclusionPath 'C:\MSOCache\All Users\{90140000-0019-0409-0000-0000000FF1CE}-C\dwm.exe'
        5⤵
        Command and Scripting Interpreter: PowerShell
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:764
    - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        
        "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Recovery\1b8b1de2-69f6-11ef-9774-62cb582c238c\dwm.exe'
        5⤵
        Command and Scripting Interpreter: PowerShell
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:2704
    - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        
        "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Program Files\Google\csrss.exe'
        5⤵
        Command and Scripting Interpreter: PowerShell
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:2788
    - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        
        "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Users\Default\conhost.exe'
        5⤵
        Command and Scripting Interpreter: PowerShell
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:3048
    - - C:\Windows\System32\cmd.exe
        
        "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\vwwyEoO331.bat"
        5⤵
        Suspicious use of WriteProcessMemory
        
        PID:2252
      - C:\Windows\system32\w32tm.exe
        
        w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
        6⤵
        
        PID:292
      - C:\providercommon\DllCommonsvc.exe
        
        "C:\providercommon\DllCommonsvc.exe"
        6⤵
        Executes dropped EXE
        Suspicious use of AdjustPrivilegeToken
        
        PID:2328

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "conhostc" /sc MINUTE /mo 14 /tr "'C:\providercommon\conhost.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2016

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "conhost" /sc ONLOGON /tr "'C:\providercommon\conhost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2160

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "conhostc" /sc MINUTE /mo 12 /tr "'C:\providercommon\conhost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2232

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dwmd" /sc MINUTE /mo 8 /tr "'C:\MSOCache\All Users\{90140000-0019-0409-0000-0000000FF1CE}-C\dwm.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1196

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dwm" /sc ONLOGON /tr "'C:\MSOCache\All Users\{90140000-0019-0409-0000-0000000FF1CE}-C\dwm.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2208

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dwmd" /sc MINUTE /mo 7 /tr "'C:\MSOCache\All Users\{90140000-0019-0409-0000-0000000FF1CE}-C\dwm.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2052

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dwmd" /sc MINUTE /mo 6 /tr "'C:\Recovery\1b8b1de2-69f6-11ef-9774-62cb582c238c\dwm.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1896

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dwm" /sc ONLOGON /tr "'C:\Recovery\1b8b1de2-69f6-11ef-9774-62cb582c238c\dwm.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2572

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dwmd" /sc MINUTE /mo 11 /tr "'C:\Recovery\1b8b1de2-69f6-11ef-9774-62cb582c238c\dwm.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:848

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 11 /tr "'C:\Program Files\Google\csrss.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1396

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\Program Files\Google\csrss.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2796

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 14 /tr "'C:\Program Files\Google\csrss.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2840

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "conhostc" /sc MINUTE /mo 9 /tr "'C:\Users\Default\conhost.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2420

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "conhost" /sc ONLOGON /tr "'C:\Users\Default\conhost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2352

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "conhostc" /sc MINUTE /mo 11 /tr "'C:\Users\Default\conhost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2808

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\vwwyEoO331.bat

Filesize
199B

MD5
9b45069f3e972c19f5755ffbf35bbe32

SHA1
096e2836e99f9cb63b7d51bcbaba3ea5646c1608

SHA256
145c17cab90e179a542ad8f71eb91ee8463f319df291210ee1e2ae88d05b4c88

SHA512
db9c7fac75199fd0b34e5b37b1b217eaa26b620a4d4a6321be1b62f2863590dbbbb04a41082ffde7a736f5954f269c48fb6fd8bb40d0fbaa794c9bae1e4f9b9a

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

Filesize
7KB

MD5
dd9c5dffba9e55c808e7ad6c235b3a31

SHA1
629e288dfc030c8979f83a61d8e233eabe4828b1

SHA256
6c92de53336a65da306302360d1522c51380345e89e3423cb057def1a6918429

SHA512
60ce7d620594c635a1d3b016dc743f316873492148b23347f77812524eced80bb5d2d2f49db266a3a3e19ec86c8e778acf6f065bdce53ec9230ae51cf950e3ac

Download Submit
C:\providercommon\1zu9dW.bat

Filesize
36B

MD5
6783c3ee07c7d151ceac57f1f9c8bed7

SHA1
17468f98f95bf504cc1f83c49e49a78526b3ea03

SHA256
8ab782f0f327a2021530e7230d3aee8abbecb7eed59482a3a46e78b9e3862322

SHA512
c6012d4bfac1ed14d0fd9f0eabd0e1c3d647b343db292a907b246271d52a4b7469c809db43910ddba2e8c5045f9cb3d24d0af62d363281e6cb8b39ee94a183e8

Download Submit
C:\providercommon\yTUdeXjbLOhnrN32dgrxVg.vbe

Filesize
197B

MD5
8088241160261560a02c84025d107592

SHA1
083121f7027557570994c9fc211df61730455bb5

SHA256
2072cc9a4a3b84d4c5178ab41c5588eea7d0103e3928e34d64f17bf97f3d1cc1

SHA512
20d9369dd359315848ea30144383a0bb479d86059fdbc3b3256ac84f998193512feb3b1799ab663619920c99fe7e0ebba33ada31a3855094b956fcd351c90478

Download Submit
\providercommon\DllCommonsvc.exe

Filesize
1.0MB

MD5
bd31e94b4143c4ce49c17d3af46bcad0

SHA1
f8c51ff3ff909531d9469d4ba1bbabae101853ff

SHA256
b5199d3eb28e7de8ec4a5de66cb339a03d90b297e2292473badaab98ade15c63

SHA512
f96658bd19b672fd84038bd7e95c89e14f4e6f84e3ce9c6fe3216861a41203406148c6a809c2ab350d0d6c5919c845f619deb1fc9b1f1814dfce87e566bc2394

Download Submit
memory/764-46-0x000000001B660000-0x000000001B942000-memory.dmp

Filesize
2.9MB

Download
memory/2704-52-0x0000000001E50000-0x0000000001E58000-memory.dmp

Filesize
32KB

Download
memory/2928-13-0x0000000000BD0000-0x0000000000CE0000-memory.dmp

Filesize
1.1MB

Download
memory/2928-14-0x00000000009F0000-0x0000000000A02000-memory.dmp

Filesize
72KB

Download
memory/2928-15-0x0000000000A00000-0x0000000000A0C000-memory.dmp

Filesize
48KB

Download
memory/2928-16-0x0000000000A50000-0x0000000000A5C000-memory.dmp

Filesize
48KB

Download
memory/2928-17-0x0000000000A60000-0x0000000000A6C000-memory.dmp

Filesize
48KB

Download